My dates are flexible. SHOW FARES. Include Nearby Airports. Search for a Delta flight round-trip, multi-city or more. You choose from over 300 destinations worldwide to find a flight that fits your schedule. Find cheap flights from Washington, D.C. to Chicago from $34. Round-trip. 1 adult. Economy. 0 bags. Direct flights only Add hotel. Sat 5/11. Sat 5/18. Search hundreds of … All dates and times are local for the airport listed. Gates and times are subject to change. For the most current information, check the airport monitors. Search for a topic... Find the flight status for a specific Delta Air Lines flight and receive real-time notifications via text or email. Flights from Washington-DC (WAS) to Chicago (CHI), low-cost direct flights and cheap flight offers on the route Washington-DC (WAS) Chicago (CHI) from $202 (price correct on 08/16/23). Book cheap tickets for direct flights online.1 stop. from ₹ 4,033. Washington D.C.. ₹ 4,033 per passenger.Departing Wed, 17 Apr.One-way flight with Spirit Airlines.Outbound indirect flight with Spirit Airlines, departs from Chicago O'Hare International on Wed, 17 Apr, arriving in Baltimore Washington International.Price includes taxes and charges.From ₹ 4,033, select.Lowest Fare for Chicago to Washington Flight ₹ 4146- 29 May: Today's Lowest Fare ₹ 0: Total flights from Chicago to Washington in a Week : 194 Flights : First Flight: American Airlines, departs at 05:15: Last Flight: United Airlines, departs at 21:45: Non-Stop Flights from Chicago to Washington: 42: Airport Name & codes of Chicago & WashingtonDirect. from £42. Chicago. £54 per passenger.Departing Mon, 22 Apr, returning Wed, 24 Apr.Return flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from Baltimore Washington International on Mon, 22 Apr, arriving in Chicago Midway.Inbound direct flight with Frontier Airlines departs from Chicago Midway on Wed ...The distance between Chicago (Chicago O'Hare International Airport) and Washington D.C. (Ronald Reagan Washington National Airport) is 612 miles / 985 kilometers / 532 nautical miles. The driving distance from Chicago (ORD) to Washington D.C. (DCA) is 716 miles / 1153 kilometers, and travel time by car is about 13 hours 36 minutes. Chicago to Washington Flights. Flights from ORD to DCA are operated 84 times a week, with an average of 12 flights per day. Departure times vary between 06:00 - 21:10. The earliest flight departs at 06:00, the last flight departs at 21:10. However, this depends on the date you are flying so please check with the full flight schedule above to ... Air Tran Airways, United Airlines and US Airways are some of the premier airlines that operate flights between Washington DC and Chicago. Take advantage of exclusive deals on flights to Chicago and save to splurge on a vacation. Generally the flight time taken to cover the 572 miles distance between Washington DC and Chicago is about two hours ...Cheap Flights from Washington to Chicago (DCA-ORD) Prices were available within the past 7 days and start at $80 for one-way flights and $159 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply. Book one-way or return flights from Washington to Chicago with no change fee on selected ...Find the cheapest month – or even day – to fly to Washington D.C.. Apr. from £367. May. from £345. Jun. from £341. Jul. from £444.Book cheap flights from Washington DC to Chicago on CheapOair and enjoy great discounts. Whether its leisure or a business trip, we offer the most competitive rates on flight tickets to destinations around the world. Grab WAS to CHI flight deals on CheapOair and save big! Hurry, our cheap rates are not going to last forever, so make your …YOTEL Washington DC. 4 out of 5. Price was $1,137, price is now $579 per person. $1,137. $579. per person. May 8 - May 13. Roundtrip flight included. Chicago (CHI) to Washington (DCA) Hamilton Hotel Washington DC. 4 out of 5. Save 100% on your flight. ... To find the best deals on flights to Chicago from Washington with United, just enter your travel … Use Google Flights to explore cheap flights to anywhere. Search destinations and track prices to find and book your next flight. Use Google Flights to explore cheap flights to anywhere. Search destinations and track prices to find and book your next flight.Flights from Washington, DC to Chicago, IL cover the 593 miles (956 km) long route taking on average 2 h 13 min with our travel partners like American Airlines, United, Sky West Airlines or Republic Airlines. While the average ticket price for this trip costs around $261 (€227), you can find the cheapest plane ticket for as low as $186 …Find United Airlines cheap flights from Washington, D.C. to Chicago. Enjoy a Washington, D.C. to Chicago modern flight experience in premium cabins with Wi-Fi.Roundtrip. Wed, May 29 - Wed, Jun 5.There are 3 airlines that fly nonstop from Washington, D.C. to Chicago O'Hare Intl Airport. They are: American Airlines, Southwest and United Airlines. The cheapest price of all airlines flying this route was found with American Airlines at $153 for a one-way flight. On average, the best prices for this route can be found at United Airlines.Our data shows that the cheapest route for a one-way flight from Ottawa to Washington, D.C. cost $163 and was between Ottawa and Washington, D.C. Reagan-National Airport. On average, the best prices are found if you fly this route. The average price for a return flight for this route is $157.There are 55 weekly flights from Houston (Bush) to Washington, D.C. (Reagan National) on Southwest Airlines. What day has the lowest fares from Houston (Bush) to Washington, D.C. (Reagan National)? To find the lowest fares by day and time to fly Houston (Bush) to Washington, D.C. (Reagan National) with Southwest, check out our …Chicago to Baltimore-Washington Flights. Flights from MDW to BWI are operated 31 times a week, with an average of 4 flights per day. Departure times vary between 05:05 - 22:20. The earliest flight departs at 05:05, the last flight departs at 22:20. However, this depends on the date you are flying so please check with the full flight schedule ... There are 3 airlines that fly nonstop from Washington, D.C. Reagan-National Airport to Chicago. They are: American Airlines, Southwest and United Airlines. The cheapest price of all airlines flying this route was found with United Airlines at $162 for a one-way flight. On average, the best prices for this route can be found at American Airlines. YOTEL Washington DC. 4 out of 5. Price was $1,137, price is now $579 per person. $1,137. $579. per person. May 8 - May 13. Roundtrip flight included. Chicago (CHI) to Washington (DCA) Hamilton Hotel Washington DC. 4 out of 5. Save 100% on your flight. ... To find the best deals on flights to Chicago from Washington with United, just enter your travel …Cheap Flights from Chicago to Washington (MDW-DCA) Prices were available within the past 7 days and start at $89 for one-way flights and $108 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply. Book one-way or return flights from Chicago to Washington with no change fee on selected ...fly for about 1.5 hours in the air. 2:41 pm (local time): Ronald Reagan Washington National (DCA) Washington, DC is 1 hour ahead of Chicago. so the time in Chicago is actually 1:41 pm. taxi on the runway for an average of 6 minutes to the gate. 2:47 pm (local time): arrive at the gate at DCA. deboard the plane, and claim any baggage.You choose from over 300 destinations worldwide to find a flight that fits your schedule. Search for a Delta flight round-trip, multi-city or more. You choose from over 300 destinations worldwide to find a flight that fits your schedule. Navigation menu. Sign Up . Log in . 3 notifications are available. Notification. BOOK A ... All dates and times are local for the airport listed. Gates and times are subject to change. For the most current information, check the airport monitors. Search for a topic... Find the flight status for a specific Delta Air Lines flight and receive real-time notifications via text or email. Flight deals from Chicago to Washington D.C. Looking for a cheap last-minute deal or the best return flight from Chicago to Washington D.C.? Find the lowest prices on one-way … Find flights to Washington, D.C. from $39. Fly from Illinois on Frontier, American Airlines and more. Search for Washington, D.C. flights on KAYAK now to find the best deal. Direct. from £43. Washington D.C.. £79 per passenger.Departing Thu, 2 May, returning Mon, 3 Jun.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Chicago Midway on Thu, 2 May, arriving in Baltimore Washington International.Inbound indirect flight with Frontier Airlines, departs from …The cheapest flights to Washington Dulles Intl. found within the past 7 days were $193 round trip and $89 one way. Prices and ... Roundtrip. found 6 days ago. Select Delta flight, departing Tue, Jul 30 from Chicago to Washington, returning Tue, Aug 13, priced at $193 found 6 days ago. Sat, Jun 1 - Tue, Jun 18. MDW. Chicago. IAD. Washington ...Book cheap flights to Washington, D.C. (IAD) with United Airlines. Enjoy all the in-flight perks on your Washington, D.C. flight, including speed Wi-Fi. Cheap Flights from Washington to Chicago (DCA-ORD) Prices were available within the past 7 days and start at $80 for one-way flights and $159 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply. Book one-way or return flights from Washington to Chicago with no change fee on selected ... Jacksonville, FL to Washington, D.C. (Reagan National), DC. departing on 7/31. one-way starting at*. $89. Book now. * Restrictions and exclusions apply. Seats and dates are limited. Select markets. 21 travel days available.$89 Cheap Delta flights Chicago (ORD) to Washington (IAD) Prices were available within the past 7 days and start at $89 for one-way flights and $182 for round trip, for the period specified. Prices and availability are subject to change.The cheapest flights to Washington Dulles Intl. found within the past 7 days were $167 round trip and $80 one way. Prices and ... Roundtrip. found 2 days ago. Select Delta flight, departing Tue, Jun 18 from Chicago to Washington, returning Thu, Jul 4, priced at $167 found 2 days ago. Tue, May 14 - Sat, May 18. ORD. Chicago. IAD. Washington ...The two airlines most popular with KAYAK users for flights from Washington, D.C. to Paris are Delta and Air France. With an average price for the route of $945 and an overall rating of 8.0, Delta is the most popular choice. Air France is also a great choice for the route, with an average price of $1,029 and an overall rating of 7.5.The cheapest way to travel between Chicago, IL and Washington, DC is a bus with an average price of $56 (€49). This is compared to other travel options from Chicago, IL to Washington, DC: Taking a bus costs $54 (€47) less than taking a flight, which costs on average $110 (€96) for the same trip. Taking a bus costs $142 (€124) less … Cheap Flights from Washington to Chicago (IAD-ORD) Prices were available within the past 7 days and start at $78 for one-way flights and $157 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply. All deals. My dates are flexible. SHOW FARES. Include Nearby Airports. Search for a Delta flight round-trip, multi-city or more. You choose from over 300 destinations worldwide to find a flight that fits your schedule. Air Tran Airways, United Airlines and US Airways are some of the premier airlines that operate flights between Washington DC and Chicago. Take advantage of exclusive deals on flights to Chicago and save to splurge on a vacation. Generally the flight time taken to cover the 572 miles distance between Washington DC and Chicago is about two hours ...The cheapest way to get from Chicago to Washington, DC costs only $86, and the quickest way takes just 3 hours. ... Flights from Chicago O'Hare to Washington Dulles via Cleveland Ave. Duration 4h 17m When Monday to Saturday Estimated price $180 - … The two airlines most popular with KAYAK users for flights from Washington, D.C. to Chicago are Delta and United Airlines. With an average price for the route of $246 and an overall rating of 8.0, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $324 and an overall rating of 7.4. The total flight duration from ORD to Washington, DC is 1 hour, 22 minutes. This is the average in-air flight time (wheels up to wheels down on the runway) based on actual flights taken over the past year, including routes like ORD to DCA . It covers the entire time on a typical commercial flight including take-off and landing.Our data shows that the cheapest route for a one-way flight from Ottawa to Washington, D.C. cost $163 and was between Ottawa and Washington, D.C. Reagan-National Airport. On average, the best prices are found if you fly this route. The average price for a return flight for this route is $157.The cheapest flights to Washington Dulles Intl. found within the past 7 days were $167 round trip and $80 one way. Prices and ... Roundtrip. found 2 days ago. Select Delta flight, departing Tue, Jun 18 from Chicago to Washington, returning Thu, Jul 4, priced at $167 found 2 days ago. Tue, May 14 - Sat, May 18. ORD. Chicago. IAD. Washington ...The cheapest ticket to District of Columbia from the United States found in the last 72 hours was $39 one-way, and $98 round-trip. The most popular route is Los Angeles to Washington, D.C. Reagan-National and the cheapest round-trip airline ticket found on this route in the last 72 hours was $204.Use Google Flights to plan your next trip and find cheap one way or round trip flights from Chicago to anywhere in the world.Flights from DC to Chicago, and Chicago to Washington DC flights are extremely common and can be found quickly and easily. How much does a private jet from Chicago to Washington DC cost? Travel requirement variants such as the number of passengers will have an impact on the cost of your Chicago to Washington DC private jet charter. …Ronald Reagan Washington National flight + hotel packages - economy flights. $80 Search for cheap flights deals from ORD to DCA (O'Hare Intl. to Ronald Reagan Washington National). We offer cheap direct, non-stop flights including one way and roundtrip tickets.Cheap Flights from Los Angeles to Washington (LAX-DCA) Prices were available within the past 7 days and start at $99 for one-way flights and $179 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply. All deals. One way. Roundtrip. Sat, May 18 - Sat, Jun 8. LAX. Los Angeles. DCA. Washington. …Cheap flights from Calgary (YYC) to Washington (DCA) Prices were available within the past 7 days and start at CA $218 for one-way flights and CA $373 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply. Book one-way or return flights from Calgary to Washington with no change fee on ... Book flights from Chicago (Midway) to Washington, D.C. (Reagan National) with Southwest Airlines ®. It’s easy to find the Chicago Midway International Airport to Ronald Reagan Washington National Airport flight to make your booking and travel a breeze. Chicago to Baltimore-Washington Flights. Flights from MDW to BWI are operated 31 times a week, with an average of 4 flights per day. Departure times vary between 05:05 - 22:20. The earliest flight departs at 05:05, the last flight departs at 22:20. However, this depends on the date you are flying so please check with the full flight schedule ...Flight deals from Chicago to Washington, D.C. Looking for a cheap last-minute deal or the best round-trip flight from Chicago to Washington, D.C.? Find the …Cheap Flights from Washington to Mexico City (DCA-MEX) Prices were available within the past 7 days and start at $306 for one-way flights and $545 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply. All deals. One way. Roundtrip. Mon, Jun 24 - Tue, Jul 23. DCA. Washington. NLU. Santa Lucía. …Direct. Wed, Oct 9 MDW – BWI with Frontier Airlines. Direct. from $76. Chicago.$84 per passenger.Departing Wed, May 29, returning Fri, Jun 28.Round-trip flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departing from Baltimore Washington International on Wed, May 29, arriving in Chicago Midway.Inbound direct flight ... Find United Airlines cheap flights from Washington, D.C. to Chicago. Enjoy a Washington, D.C. to Chicago modern flight experience in premium cabins with Wi-Fi. The total straight line flight distance from Chicago, IL to Washington, DC is 595 miles. This is equivalent to 957 kilometers or 517 nautical miles. Your trip begins in Chicago, Illinois. It ends in Washington, District of Columbia. Your flight direction from Chicago, IL to Washington, DC is East (107 degrees from North).Flights on this route from Sun Country Air typically cost $299.06 RT, a price that is 92% more expensive than the average Chicago O'Hare Intl Airport to Washington, D.C. flight. The cheapest flight found was $168 RT.All deals. One way. Roundtrip. Wed, May 22 - Sat, May 25. Flights to Pasco, Washington. $137. Flights to Seattle, Washington. $226. Flights to Spokane, Washington. Find flights to Washington from $70. Fly from Chicago on Frontier, Delta, Alaska Airlines and more. Search for Washington flights on KAYAK now to find the best deal. Flights from Washington, D.C. to Chicago. Use Google Flights to plan your next trip and find cheap one way or round trip flights from Washington, D.C. to Chicago. Find the... All dates and times are local for the airport listed. Gates and times are subject to change. For the most current information, check the airport monitors. Search for a topic... Find the flight status for a specific Delta Air Lines flight and receive real-time notifications via text or email. Cheap flights from Washington DC to Chicago from £49.99. Washington DC (United States) - Chicago (United States) return flights from £181.99. From 05/06/2024 (Wednesday) - 12/06/2024 (Wednesday). Check for the dates with the lowest prices and find the cheapest rates.Find United Airlines cheap flights from Washington, D.C. to Chicago. Enjoy a Washington, D.C. to Chicago modern flight experience in premium cabins with Wi-Fi.Round-trip. 1 adult. Economy. Round-trip One-way Multi-city. From? To? Sun 4/7. Sun 4/14. 1 adult. Economy. Find Your Flight. The best prices from Chicago to Washington, D.C. …Know the flight direction and Washington, DC to Chicago, Il flight path Washington, DC - Lat: 38.9534, Long: -77.4477 Chicago, Il - Lat: 41.9765, Long: -87.9051 Load Map. Find flight time from Washington Dulles International Airport or Washington, DC or any other airport or city in United States to various other destinations around the world using this …Cheap Flights from Los Angeles to Washington (LAX-DCA) Prices were available within the past 7 days and start at $99 for one-way flights and $179 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply. All deals. One way. Roundtrip. Sat, May 18 - Sat, Jun 8. LAX. Los Angeles. DCA. Washington. …There are 3 airlines that fly nonstop from Washington, D.C. to Chicago O'Hare Intl Airport. They are: American Airlines, Southwest and United Airlines. The cheapest price of all airlines flying this route was found with American Airlines at $153 for a one-way flight. On average, the best prices for this route can be found at United Airlines.Prices were available within the past 7 days and start at $69 for one-way flights and $137 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply. Book one-way or return flights from Washington to Chicago with no change fee on selected flights. Earn your airline miles on top of our rewards!Flights from DC to Chicago, and Chicago to Washington DC flights are extremely common and can be found quickly and easily. How much does a private jet from Chicago to Washington DC cost? Travel requirement variants such as the number of passengers will have an impact on the cost of your Chicago to Washington DC private jet charter. …Chicago, Il Washington, DC one-stop flights and connecting flights can take anywhere between 3 hours to 8 hours. Flight time depends on the intermediate airport you choose to travel. This is the average non-stop flight time from Chicago, Il to either of the major airports that serves Washington, DC. Apparently, connecting flights and direct flights …Prices were available within the past 7 days and start at $49 for one-way flights and $97 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply. All deals. One way. Roundtrip. Wed, Apr 17 - Tue, Apr 23. ORD. Chicago.Cheap Flights from Washington to Mexico City (DCA-MEX) Prices were available within the past 7 days and start at $306 for one-way flights and $545 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply. All deals. One way. Roundtrip. Mon, Jun 24 - Tue, Jul 23. DCA. Washington. NLU. Santa Lucía. …Mar 22, 2024 · Compare flight deals to Washington from Chicago from over 1,000 providers. Then choose the cheapest or fastest plane tickets. Flex your dates to find the best Chicago-Washington ticket prices. If you are flexible when it comes to your travel dates, use Skyscanner's 'Whole month' tool to find the cheapest month, and even day to fly to Washington ... Find low-fare American Airlines flights to Washington, D.C.. Enjoy our travel experience and great prices. Book the lowest fares on Washington, D.C. flights today! The cheapest month for flights from Washington, D.C. Dulles Intl Airport to Chicago O'Hare Intl Airport is January, where tickets cost $257 on average. On the other hand, the most expensive months are October and June, where the average cost of tickets is $361 and $357 respectively. The calculation of flight time is based on the straight line distance from Washington, DC to Chicago, IL ("as the crow flies"), which is about 595 miles or 957 kilometers. Your trip begins in Washington, District of Columbia. It ends in Chicago, Illinois. Your flight direction from Washington, DC to Chicago, IL is Northwest (-66 degrees from ...1 stop. Wed, 15 May BWI - ORD with Frontier Airlines. 1 stop. from £69. Washington D.C.. £90 per passenger.Departing Thu, 26 Sep, returning Wed, 2 Oct.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Chicago O'Hare International on Thu, 26 Sep, arriving in Baltimore Washington International ...Mar 24, 2024 · average. 2 h 13 m. flights per day. 17. view timetable. distance. 956 km. Cheap flight tickets from Chicago, IL to Washington, DC start from $340 with an average ticket price of $340. The fastest flight from Chicago, IL to Washington, DC takes 1h 52m in comparison to an average duration of 2h 13m and covers a distance of 956 km.
Cheap flights from Chicago to Washington (CHI - WAS): Compare last minute flight deals, direct flights and round-trip flights with Orbitz today!. Block stacking game
Flights from Wilmington, NC (ILM) to Washington, DC / Baltimore, MD (BWI) Friday. May 10. ONE-WAY FARES FROM $ 41*. 24 HR RISK-FREE CANCELLATION. Book Now. Price as of 4/22/2024. * Seats and days are limited. Fares may vary by destination, flight, and day of week and won't be available on some flights that operate during very busy travel times ...Find cheap flights from Chicago (ORD) to Washington, D.C. (IAD or DCA) …There are 3 airlines that fly nonstop from Washington, D.C. Reagan-National Airport to Chicago. They are: American Airlines, Southwest and United Airlines. The cheapest price of all airlines flying this route was found with United Airlines at $162 for a one-way flight. On average, the best prices for this route can be found at American Airlines. Find cheap flights from Chicago (ORD) to Washington, D.C. (IAD or DCA) with United Airlines. Compare prices, dates, and cabin classes for roundtrip or one-way tickets. Find low-fare American Airlines flights to Washington, D.C.. Enjoy our travel experience and great prices. Book the lowest fares on Washington, D.C. flights today! Best Time to Visit Washington, DC. Best time to book flights from Chicago to Washington DC is from June to August. It is the season when visitors can have a great time enjoying its famous sports event called Citi Open. Travelers are advised to book Washington DC flights in advance to avoid paying more at the last minute. Fly to Washington, D.C., with United Airlines from over 200 airports within the United States and an additional 100 airports internationally. Washington D.C.’s top attractions. Walk along the National Mall, a park stretching two miles in downtown featuring museums and memorials. Best Time to Visit Washington, DC. Best time to book flights from Chicago to Washington DC is from June to August. It is the season when visitors can have a great time enjoying its famous sports event called Citi Open. Travelers are advised to book Washington DC flights in advance to avoid paying more at the last minute.1 stop. from ₹ 4,033. Washington D.C.. ₹ 4,033 per passenger.Departing Wed, 17 Apr.One-way flight with Spirit Airlines.Outbound indirect flight with Spirit Airlines, departs from Chicago O'Hare International on Wed, 17 Apr, arriving in Baltimore Washington International.Price includes taxes and charges.From ₹ 4,033, select.The cheapest return flight ticket from Washington, D.C. to South Bend found by KAYAK users in the last 72 hours was for $287 on United Airlines, followed by American Airlines ($289). One-way flight deals have also been found from as low as $97 on American Airlines and from $98 on Delta.Find United Airlines cheap flights from Washington, D.C. to Chicago. Enjoy a Washington, D.C. to Chicago modern flight experience in premium cabins with Wi-Fi. Cheap Flights from ORD to DCA starting at $80 One Way, $162 Round Trip. Prices starting at $162 for return flights and $80 for one-way flights to Ronald Reagan Washington National were the cheapest prices found within the past 7 days, for the period specified. Prices and availability are subject to change. Additional terms apply. CHI - IAD. Find cheap flights from Chicago to Washington Dulles Airport from $80. Round-trip. 1 adult. Economy. 0 bags. Add hotel. Sat 5/18. Sat 5/25. Search. Direct flights only. …Cheap Flights from Washington to Chicago (IAD-ORD) Prices were available within the past 7 days and start at $78 for one-way flights and $157 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply. Book one-way or return flights from Washington to Chicago with no change fee on selected ...The total cost of driving from Chicago, IL to Washington, DC (one-way) is $103.56 at current gas prices. The round trip cost would be $207.13 to go from Chicago, IL to Washington, DC and back to Chicago, IL again. Regular fuel costs are around $3.70 per gallon for your trip. This calculation assumes that your vehicle gets an average gas … There are 51 weekly flights from Chicago (O'Hare) to Washington, D.C. (Reagan National) on Southwest Airlines. What day has the lowest fares from Chicago (O'Hare) to Washington, D.C. (Reagan National)? .