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Reagan-National

$79+ Cheap flights from Illinois to Reagan-National (DCA)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/27. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — DCA
Mar 13 — Mar 201
Fri 3/13
Fri 3/20
1 adult, Economy
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Cheap flight deals from Illinois to Reagan-National

Cheapest flights from Illinois to Reagan-National
Explore the most affordable flight options available from Illinois to Reagan-National. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 11, 2026.

This Expedia deal was found by Cheapflights users on 2/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/2410:55 am
ORD
-
DCA
1 stop10h 04m
Frontier
Sun 4/267:00 am
DCA
-
ORD
1 stop27h 50m
Frontier
Deal found 2/9$160
This Expedia deal was found by Cheapflights users on 2/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/1610:55 am
ORD
-
DCA
1 stop29h 04m
Frontier
Sun 4/197:00 am
DCA
-
ORD
1 stop27h 50m
Frontier
Deal found 2/8$181
This American Airlines deal was found by Cheapflights users on 2/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/1211:42 am
ORD
-
DCA
Nonstop2h 00m
American Airlines
Sat 5/167:50 pm
DCA
-
ORD
Nonstop2h 31m
American Airlines
Deal found 2/8$182
This United Airlines deal was found by Cheapflights users on 2/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/287:40 pm
ORD
-
DCA
Nonstop2h 12m
United Airlines
Mon 3/27:00 pm
DCA
-
ORD
Nonstop2h 35m
United Airlines
Deal found 2/7$184
This American Airlines deal was found by Cheapflights users on 2/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/148:58 pm
ORD
-
DCA
Nonstop1h 52m
American Airlines
Sat 3/216:00 am
DCA
-
ORD
Nonstop2h 25m
American Airlines
Deal found 2/8$185
This American Airlines deal was found by Cheapflights users on 2/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/78:58 pm
ORD
-
DCA
Nonstop1h 52m
American Airlines
Mon 3/97:59 pm
DCA
-
ORD
Nonstop2h 25m
American Airlines
Deal found 2/8$189
This United Airlines deal was found by Cheapflights users on 2/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/187:00 am
ORD
-
DCA
Nonstop1h 59m
United Airlines
Sat 7/187:10 pm
DCA
-
ORD
Nonstop2h 22m
United Airlines
Deal found 2/8$193
This American Airlines deal was found by Cheapflights users on 2/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/78:58 pm
ORD
-
DCA
Nonstop1h 52m
American Airlines
Sat 3/141:44 pm
DCA
-
ORD
1 stop5h 13m
American Airlines
Deal found 2/8$195
This JetBlue deal was found by Cheapflights users on 2/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/1010:00 am
ORD
-
DCA
1 stop5h 04m
JetBlue
Tue 4/284:59 pm
DCA
-
ORD
1 stop5h 37m
JetBlue
Deal found 2/8$197
This Southwest deal was found by Cheapflights users on 2/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/18:30 pm
MDW
-
DCA
Nonstop1h 45m
Southwest
Wed 4/83:40 pm
DCA
-
MDW
Nonstop2h 10m
Southwest
Deal found 2/9$197
This Expedia deal was found by Cheapflights users on 2/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/310:00 am
ORD
-
DCA
1 stop5h 04m
Multiple Airlines
Mon 3/96:00 pm
DCA
-
ORD
1 stop7h 57m
Multiple Airlines
Deal found 2/8$198
This Southwest deal was found by Cheapflights users on 2/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/109:00 am
MDW
-
DCA
1 stop7h 20m
Southwest
Tue 3/177:30 am
DCA
-
MDW
Nonstop2h 05m
Southwest
Deal found 2/10$207

Find flight deals from Illinois to Reagan-National

Keep the following information in mind while searching for Illinois to Reagan-National flight deals. Data was last updated February 11, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$160
(Expedia)

One-way from

$79
(Super.com)

Popular in

November

Cheapest in

August

Average price

$279

Good round-trip deal

$281 or less

Good one-way deal

$144 or less
Provider with most accurate pricing for Chicago (CHI)-Washington, D.C. (WAS) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Chicago (CHI)-Washington, D.C. (WAS) flights.
Search Deals
From Illinois to Washington, D.C. Reagan-National
Search Deals
One-way flight from Illinois to Washington, D.C. Reagan-National
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($24 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($8 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
Search Deals
Price to beat on a round-trip flight from Illinois to Washington, D.C. Reagan-National.
Search Deals
Price to beat on a one-way flight from Illinois to Washington, D.C. Reagan-National.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Illinois to Reagan-National that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated February 11, 2026.
Use the filters below to find and compare flights from Illinois to Washington, D.C. Reagan-National Airport that are best for you.

Fly from

Illinois

Fly to

Reagan-National

Route

Depart

Return

Price

ChicagoWashington, D.C.

ORD - DCA

ORDDCA

Chicago O'Hare Intl

Wed 3/18

11:00 am-6:38 pm

1 stop6h 38m

Washington, D.C. Reagan-National

Tue 3/24

6:00 am-11:25 am

1 stop6h 25m

$207

ChicagoWashington, D.C.

ORD - DCA

ORDDCA

Chicago O'Hare Intl

Tue 3/10

7:10 am-11:34 am

1 stop3h 24m

Washington, D.C. Reagan-National

Wed 3/11

6:14 am-10:00 am

1 stop4h 46m

$217

ChicagoWashington, D.C.

MDW - DCA

MDWDCA

Chicago Midway

Wed 3/25

7:45 am-2:00 pm

1 stop5h 15m

Washington, D.C. Reagan-National

Wed 4/1

6:10 am-12:00 pm

1 stop6h 50m

$217

ChicagoWashington, D.C.

ORD - DCA

ORDDCA

Chicago O'Hare Intl

Tue 3/3

10:00 am-4:04 pm

1 stop5h 04m

Washington, D.C. Reagan-National

Tue 3/10

6:00 am-11:48 am

1 stop6h 48m

$217

ChicagoWashington, D.C.

MDW - DCA

MDWDCA

Chicago Midway

Tue 3/17

5:30 pm-10:55 pm

1 stop4h 25m

Washington, D.C. Reagan-National

Tue 3/24

6:45 pm-9:55 pm

1 stop4h 10m

$217

ChicagoWashington, D.C.

MDW - DCA

MDWDCA

Chicago Midway

Tue 3/10

6:34 pm-10:51 pm

1 stop3h 17m

Washington, D.C. Reagan-National

Wed 3/11

12:29 pm-5:54 pm

1 stop6h 25m

$217

ChicagoWashington, D.C.

ORD - DCA

ORDDCA

Chicago O'Hare Intl

Thu 3/12

11:00 am-6:38 pm

1 stop6h 38m

Washington, D.C. Reagan-National

Sun 3/15

6:00 am-11:25 am

1 stop6h 25m

$217

ChicagoWashington, D.C.

MDW - DCA

MDWDCA

Chicago Midway

Tue 3/31

12:47 pm-8:40 pm

1 stop6h 53m

Washington, D.C. Reagan-National

Wed 4/1

6:00 am-8:53 am

1 stop3h 53m

$217

ChicagoWashington, D.C.

ORD - DCA

ORDDCA

Chicago O'Hare Intl

Mon 3/30

6:00 pm-9:06 pm

Nonstop2h 06m

Washington, D.C. Reagan-National

Wed 4/1

3:30 pm-4:49 pm

Nonstop2h 19m

$221

ChicagoWashington, D.C.

ORD - DCA

ORDDCA

Chicago O'Hare Intl

Wed 3/25

6:00 pm-8:59 pm

Nonstop1h 59m

Washington, D.C. Reagan-National

Mon 3/30

8:20 am-9:41 am

Nonstop2h 21m

$221

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/8

Showing 1-10 of 60 results
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Best time to book a flight from Illinois to Reagan-National

Have a flexible travel schedule? Discover the best time to fly to Reagan-National from Illinois with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Illinois to Washington, D.C. Reagan-National Airport

What is the cheapest month to book a flight from Illinois to Washington, D.C. Reagan-National Airport?

Currently, June is the cheapest month in which you can book a flight from Illinois to Washington, D.C. Reagan-National Airport (average of $130). Flying from Illinois to Washington, D.C. Reagan-National Airport in January is currently the most expensive (average of $234). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from IL to DCA?

Find hourly flight availability from Illinois to Reagan-National. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated February 11, 2026.

When flying from Illinois to Washington, D.C. Reagan-National Airport, the time of day you fly usually plays a role in the price. Save by searching for a flight at noon, which can drop the price by up to 7% versus a flight in the afternoon.

What is the cheapest day to fly from Illinois to Washington, D.C. Reagan-National Airport?

Use this chart to determine the cheapest time to fly round-trip from Illinois to Reagan-National. Price data was last updated on February 7, 2026.

Travelers seeking maximum savings on their Illinois to Washington, D.C. Reagan-National Airport flight should consider departing on Monday at noon when fares are most often at their lowest. Sunday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

Related info for your journey

Find useful and relevant information for your journey from Illinois to Reagan-National. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Illinois to Washington, D.C. Reagan-National Airport?

    Departing from Illinois to Washington, D.C. Reagan-National Airport will take you 3h 24m. Illinois and Washington, D.C. Reagan-National Airport are separated by a distance of 610 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines to fly from Illinois to Washington, D.C. Reagan-National Airport one-way?

    For one-way options, check prices for Frontier. According to our data, you can fly for as low as $49. Users have also found prices from $79 and $81 on Southwest and American Airlines, respectively.

  • What are the most popular routes from Illinois to Washington, D.C. Reagan-National Airport?

    The most popular flight routes from Illinois to Washington, D.C. Reagan-National Airport are Chicago O'Hare Intl - Washington, D.C. Reagan-National, Chicago Midway - Washington, D.C. Reagan-National and Lambert-St Louis - Washington, D.C. Reagan-National.

  • What are the most reliable airlines from Illinois to Washington, D.C. Reagan-National Airport?

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Illinois to Washington, D.C. Reagan-National Airport on time: Republic Airways (75%), American Airlines (73%), ANA (72%).

  • What are the cheapest flights from Illinois to Washington, D.C. Reagan-National Airport?

    While on average a flight from Illinois to Washington, D.C. Reagan-National Airport is generally $451, our data shows the cheapest flight currently is $100. When looking at the most popular route, (Chicago O'Hare Intl - Washington, D.C. Reagan-National), you can expect to pay $184 for that flight.

  • Can I find deals for flights from Illinois to Reagan-National that include hotel bookings?

    Yes. In addition to deals on Illinois to Reagan-National flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Illinois to Reagan-National?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Illinois to Reagan-National.

  • Can I find deals for business class flights from Illinois to Reagan-National?

    Yes. Cheapflights offers flight deals from Illinois to Reagan-National by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Illinois to Washington, D.C. Reagan-National Airport?

    Currently, June is the cheapest month in which you can book a flight from Illinois to Washington, D.C. Reagan-National Airport (average of $130). Flying from Illinois to Washington, D.C. Reagan-National Airport in January is currently the most expensive (average of $234). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Washington, D.C. Reagan-National Airport?

Book flights to Washington, D.C. Reagan-National Airport if you plan to visit one of these locations
Alexandria
Woodbridge
Tysons
Arlington
Owings Mills
Springfield
Silver Spring
Herndon
Fredericksburg
Hanover
Laurel
Linthicum Heights
Rockville
Upper Marlboro
Manassas
Bowie
Largo
McLean
Clinton
Towson

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Alternative routes for Illinois to Reagan-National

See prices for flight routes from nearby airports that may be better suited for you.
Dallas/Fort Worth to Dulles Intl flights
Boston to Baltimore flights
Dallas/Fort Worth to Baltimore flights
Los Angeles to Reagan-National flights
Dallas/Fort Worth to Reagan-National flights
Boston to Dulles Intl flights
Los Angeles to Baltimore flights
Los Angeles to Dulles Intl flights
Atlanta to Baltimore flights
Boston to Reagan-National flights
O'Hare Intl to Baltimore flights
O'Hare Intl to Reagan-National flights
Atlanta to Reagan-National flights
Orlando to Dulles Intl flights
San Francisco to Reagan-National flights
Seattle to Dulles Intl flights
Seattle to Reagan-National flights
San Francisco to Dulles Intl flights
O'Hare Intl to Dulles Intl flights
Hobby to Dulles Intl flights
Orlando to Reagan-National flights
Atlanta to Dulles Intl flights
Hobby to Reagan-National flights
San Francisco to Baltimore flights
Denver to Baltimore flights
Tampa to Dulles Intl flights
LaGuardia to Reagan-National flights
Denver to Dulles Intl flights
George Bush Intcntl to Dulles Intl flights
Orlando to Baltimore flights
Detroit to Dulles Intl flights
George Bush Intcntl to Reagan-National flights
Newark to Dulles Intl flights
Fort Lauderdale to Baltimore flights
Hobby to Baltimore flights
John F Kennedy Intl to Reagan-National flights
Miami to Baltimore flights
Sky Harbor Intl to Dulles Intl flights
Minneapolis to Reagan-National flights
Austin to Dulles Intl flights
Fort Lauderdale to Dulles Intl flights
Detroit to Baltimore flights
Denver to Reagan-National flights
Miami to Dulles Intl flights
Austin to Reagan-National flights
Ontario to Dulles Intl flights
LaGuardia to Dulles Intl flights
Minneapolis to Dulles Intl flights
John F Kennedy Intl to Dulles Intl flights
Tampa to Reagan-National flights

Top 6 airlines flying from Illinois to Reagan-National

Discover the top 6 airlines that operate flights from Illinois to Reagan-National. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated February 11, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$85Average$185FlexibilityNo cancel feeOn-time62%
DeltaCheapest$124Average$196FlexibilityNo cancel feeOn-timeN/A
JetBlueCheapest$141Average$254FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$165Average$379FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$197Average$308FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$198Average$345FlexibilityNo cancel feeOn-time69%

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