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$85 Find cheap flights from Illinois to Reagan Washington National Airport

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to Reagan-National departing on 7/2. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
0 bags
jue. 6/27
jue. 7/4

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Good to know

Low season

January

High season

May

Cheapest flight

$85
Best time to beat the crowds with an average 9% drop in price.
Most popular time to fly with an average 4% increase in price.
Flight from St. Louis to Reagan Washington National Airport

FAQs for booking Illinois to Reagan Washington National Airport flights

  • How does KAYAK find such low prices on flights from Illinois to Reagan Washington National Airport?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Illinois to Reagan Washington National Airport.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Illinois to Reagan Washington National Airport?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Reagan Washington National Airport from Illinois is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Illinois to Reagan Washington National Airport?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Reagan Washington National Airport with an airline and back to Illinois with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Illinois to Reagan Washington National Airport?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Reagan Washington National Airport from Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Prefer to fly non-stop from Illinois to Reagan Washington National Airport?

Find which airlines fly direct from Illinois to Reagan-National, which days they fly and book direct flights.

Nonstop departures

Illinois to Washington, D.C. Reagan-National

Monday

ANA, Aerolineas Argentinas, Aeromexico, +42 more

ANA, Aerolineas Argentinas, +43 more

Tuesday

ANA, Aerolineas Argentinas, Aeromexico, +42 more

ANA, Aerolineas Argentinas, +43 more

Wednesday

ANA, Aerolineas Argentinas, Aeromexico, +42 more

ANA, Aerolineas Argentinas, +43 more

Thursday

ANA, Aerolineas Argentinas, Aeromexico, +41 more

ANA, Aerolineas Argentinas, +42 more

Friday

ANA, Aerolineas Argentinas, Aeromexico, +42 more

ANA, Aerolineas Argentinas, +43 more

Saturday

ANA, Aerolineas Argentinas, Aeromexico, +41 more

ANA, Aerolineas Argentinas, +42 more

Sunday

ANA, Aerolineas Argentinas, Aeromexico, +43 more

ANA, Aerolineas Argentinas, +44 more

See more direct flights

Nonstop returns

Washington, D.C. Reagan-National to Illinois

Monday

ANA, Aerolineas Argentinas, Aeromexico, +42 more

ANA, Aerolineas Argentinas, +43 more

Tuesday

ANA, Aerolineas Argentinas, Aeromexico, +42 more

ANA, Aerolineas Argentinas, +43 more

Wednesday

ANA, Aerolineas Argentinas, Aeromexico, +42 more

ANA, Aerolineas Argentinas, +43 more

Thursday

ANA, Aerolineas Argentinas, Aeromexico, +41 more

ANA, Aerolineas Argentinas, +42 more

Friday

ANA, Aerolineas Argentinas, Aeromexico, +42 more

ANA, Aerolineas Argentinas, +43 more

Saturday

ANA, Aerolineas Argentinas, Aeromexico, +41 more

ANA, Aerolineas Argentinas, +42 more

Sunday

ANA, Aerolineas Argentinas, Aeromexico, +43 more

ANA, Aerolineas Argentinas, +44 more

See more direct flights
See more direct flights

Book cheap flights from Illinois to Washington, D.C.

Recent round-trip flight deals

7/2mar.
nonstopUnited Airlines
1h 54mORD-DCA
7/4jue.
nonstopUnited Airlines
2h 13mDCA-ORD
$169
6/26mié.
nonstopAmerican Airlines
2h 09mSTL-DCA
7/3mié.
nonstopAmerican Airlines
2h 28mDCA-STL
$179
6/25mar.
nonstopAmerican Airlines
1h 49mORD-DCA
7/2mar.
nonstopAmerican Airlines
2h 11mDCA-ORD
$179
7/1lun.
1 stopDelta
6h 44mSTL-DCA
7/5vie.
1 stopDelta
6h 45mDCA-STL
$188
7/2mar.
1 stopDelta
5h 08mORD-DCA
7/4jue.
1 stopDelta
5h 40mDCA-ORD
$188
6/19mié.
1 stopFrontier
15h 03mSTL-DCA
6/22sáb.
1 stopFrontier
20h 38mDCA-STL
$215
6/14vie.
1 stopFrontier
17h 29mSTL-DCA
6/17lun.
1 stopFrontier
26h 48mDCA-STL
$219
6/5mié.
1 stopJetBlue
6h 03mORD-DCA
9/4mié.
1 stopJetBlue
7h 34mDCA-ORD
$274
6/6jue.
1 stopJetBlue
7h 44mORD-DCA
9/4mié.
1 stopJetBlue
6h 34mDCA-ORD
$309
8/2vie.
1 stopAlaska Airlines
13h 59mSTL-DCA
8/3sáb.
2 stopsAlaska Airlines
28h 50mDCA-STL
$1,270

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Recent one-way flight deals

7/2mar.
nonstopAmerican Airlines
2h 02mSTL-DCA
$85
9/1dom.
nonstopUnited Airlines
1h 57mORD-DCA
$85
6/18mar.
1 stopJetBlue
5h 15mORD-DCA
$92
7/1lun.
1 stopDelta
6h 20mSTL-DCA
$94
7/2mar.
1 stopDelta
3h 29mORD-DCA
$94
7/4jue.
1 stopDelta
5h 45mMDW-DCA
$94
6/4mar.
1 stopFrontier
12h 17mSTL-DCA
$111
6/4mar.
1 stopFrontier
12h 17mSTL-DCA
$115
6/20jue.
1 stopJetBlue
6h 16mORD-DCA
$127
6/11mar.
nonstopUndisclosed Carrier
2h 08mORD-DCA
$185

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Last minute flights from Illinois to Reagan-National

Last minute flight, train and bus deals

5/30jue.
multi-stopFrontier
11h 57mSTL-DCA
6/6jue.
multi-stopFrontier
8h 32mDCA-STL
$272
5/29mié.
multi-stopFrontier
14h 59mSTL-DCA
6/3lun.
multi-stopFrontier
19h 12mDCA-STL
$317
5/30jue.
multi-stopFrontier
21h 53mSTL-DCA
6/2dom.
multi-stopFrontier
16h 32mDCA-STL
$336
6/2dom.
multi-stopAmerican Airlines
11h 20mORD-DCA
6/3lun.
nonstopAmerican Airlines
2h 08mDCA-ORD
$376
6/2dom.
nonstopAmerican Airlines
1h 47mORD-DCA
6/30dom.
nonstopAmerican Airlines
2h 11mDCA-ORD
$399
5/31vie.
multi-stopJetBlue
5h 01mORD-DCA
6/4mar.
multi-stopJetBlue
5h 50mDCA-ORD
$477
5/29mié.
multi-stopJetBlue
6h 03mORD-DCA
6/4mar.
multi-stopJetBlue
9h 00mDCA-ORD
$478
6/1sáb.
multi-stopDelta
4h 16mORD-DCA
6/8sáb.
multi-stopDelta
4h 16mDCA-ORD
$480
5/29mié.
multi-stopDelta
4h 00mMDW-DCA
6/4mar.
multi-stopDelta
3h 35mDCA-MDW
$480
5/31vie.
multi-stopSouthwest
6h 20mORD-DCA
6/2dom.
multi-stopSouthwest
4h 25mDCA-ORD
$509

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