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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 6/11. 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
vie. 6/21
vie. 6/28

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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 8% drop in price.
Most popular time to fly with an average 1% 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

6/19mié.
1 stopFrontier
15h 03mSTL-DCA
6/25mar.
1 stopFrontier
8h 47mDCA-STL
$168
6/19mié.
nonstopAmerican Airlines
2h 02mSTL-DCA
6/26mié.
nonstopAmerican Airlines
2h 28mDCA-STL
$169
6/18mar.
nonstopUnited Airlines
2h 00mORD-DCA
6/25mar.
nonstopUnited Airlines
2h 12mDCA-ORD
$169
6/18mar.
1 stopUnited Airlines
5h 12mORD-DCA
6/25mar.
nonstopUnited Airlines
2h 11mDCA-ORD
$179
8/8jue.
nonstopAmerican Airlines
1h 49mORD-DCA
8/13mar.
nonstopAmerican Airlines
2h 20mDCA-ORD
$184
8/12lun.
nonstopSouthwest
2h 00mSTL-DCA
8/13mar.
nonstopSouthwest
2h 10mDCA-STL
$185
6/11mar.
1 stopDelta
6h 46mSTL-DCA
6/19mié.
1 stopDelta
6h 13mDCA-STL
$188
6/18mar.
1 stopDelta
3h 15mORD-DCA
6/25mar.
1 stopDelta
5h 26mDCA-ORD
$188
7/10mié.
1 stopDelta
5h 09mMDW-DCA
7/16mar.
1 stopDelta
5h 29mDCA-MDW
$188
8/12lun.
nonstopSouthwest
2h 00mSTL-DCA
8/13mar.
1 stopSouthwest
5h 40mDCA-STL
$194

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Recent one-way flight deals

6/11mar.
nonstopAmerican Airlines
2h 02mSTL-DCA
$85
6/11mar.
nonstopAmerican Airlines
1h 49mORD-DCA
$85
6/11mar.
1 stopFrontier
19h 14mSTL-DCA
$86
6/26mié.
nonstopUnited Airlines
1h 53mORD-DCA
$89
6/5mié.
1 stopFrontier
24h 55mSTL-DCA
$90
6/18mar.
1 stopJetBlue
5h 15mORD-DCA
$92
6/11mar.
1 stopDelta
3h 59mSTL-DCA
$94
6/25mar.
1 stopDelta
5h 14mORD-DCA
$94
6/21vie.
nonstopUnited Airlines
1h 54mORD-DCA
$105
6/12mié.
1 stopJetBlue
5h 43mORD-DCA
$127

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Last minute flights from Illinois to Reagan-National

Last minute flight, train and bus deals

5/23jue.
nonstopAmerican Airlines
1h 47mORD-DCA
5/23jue.
multi-stopAmerican Airlines
4h 29mDCA-ORD
$275
5/24vie.
multi-stopAmerican Airlines
5h 25mPIA-DCA
5/26dom.
multi-stopAmerican Airlines
4h 27mDCA-PIA
$307
5/24vie.
multi-stopFrontier
20h 22mSTL-DCA
5/29mié.
multi-stopFrontier
28h 09mDCA-STL
$308
5/24vie.
multi-stopFrontier
20h 22mSTL-DCA
5/29mié.
multi-stopFrontier
28h 09mDCA-STL
$324
5/27lun.
multi-stopDelta
5h 10mORD-DCA
8/3sáb.
multi-stopDelta
6h 21mDCA-ORD
$443
5/25sáb.
multi-stopDelta
5h 10mORD-DCA
6/5mié.
multi-stopDelta
4h 10mDCA-ORD
$453
5/25sáb.
multi-stopUnited Airlines
4h 43mORD-DCA
6/5mié.
nonstopUnited Airlines
2h 10mDCA-ORD
$462
5/23jue.
multi-stopJetBlue
5h 01mORD-DCA
5/29mié.
multi-stopJetBlue
9h 00mDCA-ORD
$495
5/23jue.
multi-stopJetBlue
8h 05mORD-DCA
5/28mar.
multi-stopJetBlue
7h 50mDCA-ORD
$506
5/25sáb.
multi-stopUnited Airlines
6h 12mORD-DCA
5/28mar.
multi-stopUnited Airlines
13h 24mDCA-ORD
$524

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