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Cheap flights from Illinois to Washington, D.C. from $70

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Illinois to Washington, D.C. departing on 2/7. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
7:41 pm - 9:59 pm
ORD
-
DCA
25h 18m
1 stop
Frontier Logo
2:00 pm - 6:31 pm
DCA
-
ORD
29h 31m
1 stop
$150Frontier
Thu, Jan 29 - Wed, Feb 4
Frontier Logo
7:00 am - 9:59 pm
ORD
-
DCA
13h 59m
1 stop
Frontier Logo
8:00 am - 12:12 am
DCA
-
ORD
17h 12m
1 stop
$161Frontier
Sat, Apr 11 - Mon, Apr 13
Frontier Logo
12:07 pm - 9:59 pm
ORD
-
DCA
8h 52m
1 stop
Frontier Logo
2:00 pm - 10:57 am
DCA
-
ORD
21h 57m
1 stop
$170Frontier
Fri, Jan 30 - Thu, Feb 5
American Airlines Logo
7:48 pm - 11:00 pm
ORD
-
DCA
2h 12mnonstop
American Airlines Logo
1:43 pm - 3:17 pm
DCA
-
ORD
2h 34mnonstop
$171American Airlines
Thu, Feb 26 - Thu, Mar 5
Multiple Airlines Logo
7:45 am - 2:29 pm
ORD
-
DCA
5h 44m
1 stop
Multiple Airlines Logo
2:00 pm - 6:31 pm
DCA
-
ORD
29h 31m
1 stop
$173Multiple Airlines
Tue, Feb 3 - Wed, Feb 4
JetBlue Logo
7:45 am - 2:29 pm
ORD
-
DCA
5h 44m
1 stop
JetBlue Logo
1:00 pm - 5:43 pm
DCA
-
ORD
5h 43m
1 stop
$177JetBlue
Thu, Feb 5 - Mon, Feb 9
Multiple Airlines Logo
7:45 am - 4:19 pm
ORD
-
DCA
7h 34m
1 stop
Multiple Airlines Logo
6:00 pm - 10:57 am
DCA
-
ORD
17h 57m
1 stop
$179Multiple Airlines
Thu, Feb 5 - Sat, Feb 7
Southwest Logo
6:25 am - 9:20 am
MDW
-
DCA
1h 55mnonstop
Southwest Logo
3:40 pm - 4:55 pm
DCA
-
MDW
2h 15mnonstop
$231Southwest
Sat, Feb 21 - Sat, Feb 21
Southwest Logo
6:25 am - 9:20 am
MDW
-
DCA
1h 55mnonstop
Southwest Logo
6:00 am - 7:15 am
DCA
-
MDW
2h 15mnonstop
$240Southwest
Sat, Feb 14 - Mon, Feb 16
American Airlines Logo
11:05 am - 6:44 pm
STL
-
DCA
6h 39m
1 stop
American Airlines Logo
7:30 am - 9:06 am
DCA
-
STL
2h 36mnonstop
$274American Airlines
Tue, Feb 10 - Thu, Feb 12

Southwest flights from Illinois to Washington, D.C. Reagan-National Airport

Our best Southwest deals on Illinois to Washington, D.C. Reagan-National Airport flight tickets
Southwest
Feb 18
MDW5:25 pmChicago Midway
1h 50m
DCA8:15 pmWashington, D.C. Reagan-National
Feb 21
DCA10:00 amWashington, D.C. Reagan-National
2h 10m
MDW11:10 amChicago Midway
$231
Southwest
Feb 18
MDW7:05 amChicago Midway
1h 55m
DCA10:00 amWashington, D.C. Reagan-National
Feb 21
DCA8:00 amWashington, D.C. Reagan-National
6h 30m
1 stop
MDW1:30 pmChicago Midway
$241
Southwest
Feb 18
MDW10:15 amChicago Midway
6h 45m
2 stops
DCA6:00 pmWashington, D.C. Reagan-National
Feb 21
DCA10:00 amWashington, D.C. Reagan-National
2h 10m
MDW11:10 amChicago Midway
$247

American Airlines flights from Illinois to Washington, D.C. Reagan-National Airport

Our best American Airlines deals on Illinois to Washington, D.C. Reagan-National Airport flight tickets
American Airlines
Feb 26
ORD7:48 pmChicago O'Hare Intl
2h 12m
DCA11:00 pmWashington, D.C. Reagan-National
Mar 5
DCA1:43 pmWashington, D.C. Reagan-National
2h 34m
ORD3:17 pmChicago O'Hare Intl
$171
American Airlines
Feb 21
ORD6:08 amChicago O'Hare Intl
1h 51m
DCA8:59 amWashington, D.C. Reagan-National
Feb 21
DCA10:00 amWashington, D.C. Reagan-National
4h 53m
1 stop
ORD1:53 pmChicago O'Hare Intl
$213
American Airlines
Feb 9
ORD11:51 amChicago O'Hare Intl
4h 58m
1 stop
DCA5:49 pmWashington, D.C. Reagan-National
Feb 9
DCA9:13 pmWashington, D.C. Reagan-National
2h 21m
ORD10:34 pmChicago O'Hare Intl
$223

momondo Fare Finder

 
Customize your flight search to find flights from Illinois to Washington, D.C. Reagan-National Airport 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, momondo users made 832,500 searches. Data last updated January 14, 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

Fly to

Route

Depart

Return

Price

ChicagoWashington, D.C.

ORD - DCA

ORDDCA

Chicago O'Hare Intl

Thu 1/29

7:41 pm-9:59 pm

1 stop25h 18m

Washington, D.C. Reagan-National

Wed 2/4

2:00 pm-6:31 pm

1 stop29h 31m

$150

ChicagoWashington, D.C.

ORD - DCA

ORDDCA

Chicago O'Hare Intl

Sat 4/11

7:00 am-9:59 pm

1 stop13h 59m

Washington, D.C. Reagan-National

Mon 4/13

8:00 am-12:12 am

1 stop17h 12m

$161

ChicagoWashington, D.C.

ORD - DCA

ORDDCA

Chicago O'Hare Intl

Fri 1/30

12:07 pm-9:59 pm

1 stop8h 52m

Washington, D.C. Reagan-National

Thu 2/5

2:00 pm-10:57 am

1 stop21h 57m

$170

ChicagoWashington, D.C.

ORD - DCA

ORDDCA

Chicago O'Hare Intl

Thu 2/26

7:48 pm-11:00 pm

Nonstop2h 12m

Washington, D.C. Reagan-National

Thu 3/5

1:43 pm-3:17 pm

Nonstop2h 34m

$171

ChicagoWashington, D.C.

ORD - DCA

ORDDCA

Chicago O'Hare Intl

Tue 2/3

7:45 am-2:29 pm

1 stop5h 44m

Washington, D.C. Reagan-National

Wed 2/4

2:00 pm-6:31 pm

1 stop29h 31m

$173

ChicagoWashington, D.C.

ORD - DCA

ORDDCA

Chicago O'Hare Intl

Thu 2/5

7:45 am-2:29 pm

1 stop5h 44m

Washington, D.C. Reagan-National

Mon 2/9

1:00 pm-5:43 pm

1 stop5h 43m

$177

ChicagoWashington, D.C.

ORD - DCA

ORDDCA

Chicago O'Hare Intl

Thu 2/5

7:45 am-4:19 pm

1 stop7h 34m

Washington, D.C. Reagan-National

Sat 2/7

6:00 pm-10:57 am

1 stop17h 57m

$179

ChicagoWashington, D.C.

MDW - DCA

MDWDCA

Chicago Midway

Sat 2/21

6:25 am-9:20 am

Nonstop1h 55m

Washington, D.C. Reagan-National

Sat 2/21

3:40 pm-4:55 pm

Nonstop2h 15m

$231

ChicagoWashington, D.C.

MDW - DCA

MDWDCA

Chicago Midway

Sat 2/14

6:25 am-9:20 am

Nonstop1h 55m

Washington, D.C. Reagan-National

Mon 2/16

6:00 am-7:15 am

Nonstop2h 15m

$240

St. LouisWashington, D.C.

STL - DCA

STLDCA

Lambert-St Louis

Tue 2/10

11:05 am-6:44 pm

1 stop6h 39m

Washington, D.C. Reagan-National

Thu 2/12

7:30 am-9:06 am

Nonstop2h 36m

$274

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Washington, D.C. from

How to get the cheapest flight ticket from Illinois to Washington, D.C. Reagan-National Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

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

The month of July is, on average, the cheapest month to fly to Washington, D.C. Reagan-National Airport from Illinois, with most prices found around $263. If you aren’t able to travel to Washington, D.C. Reagan-National Airport during the month of July, then flying in August is also cheap. Prices for this month can be found on momondo for an average of $263.

What is the cheapest day to depart on your flight to Washington, D.C. Reagan-National Airport?

The cheapest day to depart from Illinois to Washington, D.C. Reagan-National Airport is on a Thursday. Travelers who choose to depart for Washington, D.C. Reagan-National Airport on a Thursday will often find tickets for as low as $281. Flights from Illinois to Washington, D.C. Reagan-National Airport on a Sunday will generally be more expensive and average around $374. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Washington, D.C. Reagan-National Airport?

Our data shows that the cheapest Illinois to Washington, D.C. Reagan-National Airport flights are usually those with departure times at noon. Our users have found flights to Washington, D.C. Reagan-National Airport at noon for as low as $299. In contrast, the most expensive time of day to depart to Washington, D.C. Reagan-National Airport is in the afternoon when prices are around $328.

What is the cheapest Illinois to Washington, D.C. Reagan-National flight route?

Fly from Chicago O'Hare Intl to Washington, D.C. Reagan-National for the best Illinois - Washington, D.C. Reagan-National flight prices

How far in advance should I book a flight to Washington, D.C. Reagan-National Airport?

You are more likely to see cheaper flights to Washington, D.C. Reagan-National Airport from Illinois when booking weeks ahead of your departure date. In general, you can expect to find flights to Washington, D.C. Reagan-National Airport for around $304 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Washington, D.C. Reagan-National Airport from Illinois for as low as $182 on momondo.

What cabin class options are available on Illinois to Washington, D.C. Reagan-National flights?

There are 4 cabin classes available to choose from on Illinois to Washington, D.C. Reagan-National flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Illinois to Washington, D.C. Reagan-National Airport flights?

No. A direct flight is the cheapest option for a flight between Illinois to Washington, D.C. Reagan-National Airport.

Cheap Illinois to Washington, D.C. Reagan-National Airport flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Illinois to Washington, D.C. Reagan-National Airport

Best Price Found

$146

Fastest flight time

1h 44m

Direct flights

Every day
The best one-way flight to Washington, D.C. Reagan-National Airport from Illinois in the past 72 hours is $146. The best round-trip flight deal from Illinois to Washington, D.C. Reagan-National Airport found on momondo in the last 72 hours is $279.
The fastest flight from Illinois to Washington, D.C. Reagan-National Airport takes 1h 44m
Direct flights go from Illinois to Washington, D.C. Reagan-National Airport every day.
Search flight deals

  • When did momondo last update prices for flights from Illinois to Washington, D.C. Reagan-National Airport?

    Prices for flights from Illinois to Washington, D.C. Reagan-National Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Illinois to Washington, D.C. Reagan-National Airport?

  • How old do you have to be to fly from Illinois to Washington, D.C. Reagan-National Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Illinois to Washington, D.C. Reagan-National Airport.

  • What documentation or ID do you need to fly to Washington, D.C. Reagan-National Airport?

    The required travel and health documents for your Washington, D.C. Reagan-National Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Washington, D.C. Reagan-National Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular plane model from Illinois to Washington, D.C. Reagan-National Airport?

Best airlines flying from Illinois to Washington, D.C. Reagan-National Airport

Compare and see reviews for airlines that fly from Illinois to Washington, D.C. Reagan-National Airport with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $85Free CancellationRating
5.7
3,056 reviews
Search Frontier flights
JetBluePriceFrom $141Free CancellationRating
7.2
2,887 reviews
Search JetBlue flights
DeltaPriceFrom $166Free CancellationRating
7.9
8,044 reviews
Search Delta flights
American AirlinesPriceFrom $168Free CancellationRating
7.2
11,125 reviews
Search American Airlines flights
SouthwestPriceFrom $191Free CancellationRating
8.0
4,258 reviews
Search Southwest flights
United AirlinesPriceFrom $195Free CancellationRating
7.4
9,162 reviews
Search United Airlines flights

Traveling to a place near Washington, D.C.?

Book flights to Washington, D.C. if you plan to visit one of these locations
Alexandria
National Harbor
Gettysburg
Arlington
Waldorf
Woodbridge
Tysons
Laurel
Colonial Beach
Silver Spring
Towson
Fredericksburg
Gaithersburg
Rockville
Manassas
Springfield
Fairfax
Glen Burnie
Linthicum Heights
Reston

Why use momondo?

Why should I use momondo to find a flight deal from Illinois to Washington, D.C.?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Washington, D.C. from Illinois.

Can I find flights from Illinois to Washington, D.C. with flexible booking policies on momondo?

momondo does allow users to show only those flights to Washington, D.C. from Illinois which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Illinois to Washington, D.C.?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Illinois to Washington, D.C..

I’m not ready to book a flight from Illinois to Washington, D.C. right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Illinois to Washington, D.C. now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Washington, D.C. and let you know when they change.

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