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Cheap flights from Washington, D.C. to Illinois from $55

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington, D.C. to Illinois departing on 3/3. 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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Find the cheapest flights from Washington, D.C. to Illinois

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
4:28 pm - 5:55 pm
BWI
-
ORD
2h 27mnonstop
Multiple Airlines Logo
8:16 pm - 9:06 am
ORD
-
BWI
11h 50m
1 stop
$104Multiple Airlines
Fri, Mar 6 - Mon, Mar 9
Frontier Logo
9:19 am - 10:46 am
BWI
-
ORD
2h 27mnonstop
Frontier Logo
4:42 pm - 5:13 pm
ORD
-
BWI
23h 31m
1 stop
$105Frontier
Thu, Feb 26 - Mon, Mar 2
Frontier Logo
6:00 am - 4:52 pm
BWI
-
ORD
11h 52m
1 stop
Frontier Logo
7:41 pm - 2:24 pm
ORD
-
BWI
17h 43m
1 stop
$106Frontier
Tue, Mar 3 - Tue, Mar 10
Southwest Logo
7:35 am - 8:50 am
BWI
-
MDW
2h 15mnonstop
Southwest Logo
1:15 pm - 4:00 pm
MDW
-
BWI
1h 45mnonstop
$149Southwest
Thu, Feb 26 - Tue, Mar 3
Southwest Logo
6:15 am - 7:25 am
DCA
-
MDW
2h 10mnonstop
Southwest Logo
5:25 pm - 8:15 pm
MDW
-
DCA
1h 50mnonstop
$172Southwest
Sat, Feb 21 - Wed, Feb 25
American Airlines Logo
9:35 am - 10:57 am
DCA
-
ORD
2h 22mnonstop
American Airlines Logo
8:58 pm - 11:50 pm
ORD
-
DCA
1h 52mnonstop
$174American Airlines
Wed, Mar 4 - Sat, Mar 7
JetBlue Logo
6:00 am - 11:49 am
DCA
-
ORD
6h 49m
1 stop
JetBlue Logo
10:00 am - 4:04 pm
ORD
-
DCA
5h 04m
1 stop
$176JetBlue
Thu, Mar 5 - Mon, Mar 9
American Airlines Logo
7:50 pm - 9:15 pm
DCA
-
ORD
2h 25mnonstop
American Airlines Logo
6:08 am - 8:59 am
ORD
-
DCA
1h 51mnonstop
$177American Airlines
Sat, Mar 7 - Sat, Mar 14
United Airlines Logo
6:30 am - 10:11 am
DCA
-
PIA
4h 41m
1 stop
United Airlines Logo
2:51 pm - 8:59 pm
PIA
-
DCA
5h 08m
1 stop
$265United Airlines
Sat, Feb 14 - Sat, Feb 21
United Airlines Logo
6:45 pm - 8:23 pm
IAD
-
STL
2h 38mnonstop
United Airlines Logo
11:25 am - 5:30 pm
STL
-
IAD
5h 05m
1 stop
$266United Airlines
Tue, Mar 3 - Tue, Mar 10

JetBlue flights from Washington, D.C. to Illinois

Our best JetBlue deals on Washington, D.C. to Illinois flight tickets
JetBlue
Mar 5
DCA6:00 amWashington, D.C. Reagan-National
6h 49m
1 stop
ORD11:49 amChicago O'Hare Intl
Mar 9
ORD10:00 amChicago O'Hare Intl
5h 04m
1 stop
DCA4:04 pmWashington, D.C. Reagan-National
$176
JetBlue
Mar 5
DCA6:00 amWashington, D.C. Reagan-National
6h 49m
1 stop
ORD11:49 amChicago O'Hare Intl
Mar 9
ORD10:00 amChicago O'Hare Intl
6h 49m
1 stop
DCA5:49 pmWashington, D.C. Reagan-National
$206
JetBlue
Feb 24
DCA6:00 amWashington, D.C. Reagan-National
6h 59m
1 stop
ORD11:59 amChicago O'Hare Intl
Feb 25
ORD10:00 amChicago O'Hare Intl
6h 49m
1 stop
DCA5:49 pmWashington, D.C. Reagan-National
$207

Frontier flights from Washington, D.C. to Illinois

Our best Frontier deals on Washington, D.C. to Illinois flight tickets
Frontier
Feb 26
BWI9:19 amBaltimore/Washington
2h 27m
ORD10:46 amChicago O'Hare Intl
Mar 2
ORD4:42 pmChicago O'Hare Intl
23h 31m
1 stop
BWI5:13 pmBaltimore/Washington
$105
Frontier
Mar 3
BWI6:00 amBaltimore/Washington
11h 52m
1 stop
ORD4:52 pmChicago O'Hare Intl
Mar 10
ORD7:41 pmChicago O'Hare Intl
17h 43m
1 stop
BWI2:24 pmBaltimore/Washington
$106
Frontier
Feb 26
BWI9:19 amBaltimore/Washington
2h 27m
ORD10:46 amChicago O'Hare Intl
Mar 1
ORD6:05 pmChicago O'Hare Intl
2h 09m
BWI9:14 pmBaltimore/Washington
$107

momondo Fare Finder

 
Customize your flight search to find flights from Washington, D.C. to Illinois 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 February 3, 2026.
Use the filters below to find and compare flights from Washington, D.C. to Illinois that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

BaltimoreChicago

BWI - ORD

BWIORD

Baltimore/Washington

Fri 3/6

4:28 pm-5:55 pm

Nonstop2h 27m

Chicago O'Hare Intl

Mon 3/9

8:16 pm-9:06 am

1 stop11h 50m

$104

BaltimoreChicago

BWI - ORD

BWIORD

Baltimore/Washington

Thu 2/26

9:19 am-10:46 am

Nonstop2h 27m

Chicago O'Hare Intl

Mon 3/2

4:42 pm-5:13 pm

1 stop23h 31m

$105

BaltimoreChicago

BWI - ORD

BWIORD

Baltimore/Washington

Tue 3/3

6:00 am-4:52 pm

1 stop11h 52m

Chicago O'Hare Intl

Tue 3/10

7:41 pm-2:24 pm

1 stop17h 43m

$106

BaltimoreChicago

BWI - MDW

BWIMDW

Baltimore/Washington

Thu 2/26

7:35 am-8:50 am

Nonstop2h 15m

Chicago Midway

Tue 3/3

1:15 pm-4:00 pm

Nonstop1h 45m

$149

Washington, D.C.Chicago

DCA - MDW

DCAMDW

Washington, D.C. Reagan-National

Sat 2/21

6:15 am-7:25 am

Nonstop2h 10m

Chicago Midway

Wed 2/25

5:25 pm-8:15 pm

Nonstop1h 50m

$172

Washington, D.C.Chicago

DCA - ORD

DCAORD

Washington, D.C. Reagan-National

Wed 3/4

9:35 am-10:57 am

Nonstop2h 22m

Chicago O'Hare Intl

Sat 3/7

8:58 pm-11:50 pm

Nonstop1h 52m

$174

Washington, D.C.Chicago

DCA - ORD

DCAORD

Washington, D.C. Reagan-National

Thu 3/5

6:00 am-11:49 am

1 stop6h 49m

Chicago O'Hare Intl

Mon 3/9

10:00 am-4:04 pm

1 stop5h 04m

$176

Washington, D.C.Chicago

DCA - ORD

DCAORD

Washington, D.C. Reagan-National

Sat 3/7

7:50 pm-9:15 pm

Nonstop2h 25m

Chicago O'Hare Intl

Sat 3/14

6:08 am-8:59 am

Nonstop1h 51m

$177

Washington, D.C.Peoria

DCA - PIA

DCAPIA

Washington, D.C. Reagan-National

Sat 2/14

6:30 am-10:11 am

1 stop4h 41m

Greater Peoria

Sat 2/21

2:51 pm-8:59 pm

1 stop5h 08m

$265

Washington, D.C.St. Louis

IAD - STL

IADSTL

Washington, D.C. Dulles Intl

Tue 3/3

6:45 pm-8:23 pm

Nonstop2h 38m

Lambert-St Louis

Tue 3/10

11:25 am-5:30 pm

1 stop5h 05m

$266

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 Illinois from

How to get the cheapest flight ticket from Washington, D.C. to Illinois

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 Illinois?

The cheapest month to fly to Illinois from Washington, D.C. is in September. Flight prices, which tend to average around $203, are often lower during this time because this is during the off-season. If you aren’t able to travel to Illinois during the month of September, then flying in February is also cheap. Prices for this month can be found on momondo for an average of $226.

What is the cheapest day to depart on your flight to Illinois?

The cheapest day to depart from Washington, D.C. to Illinois is on a Friday when prices can be found for as low as $393. Flights from Washington, D.C. to Illinois on a Sunday will generally be more expensive and average around $567. 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 Illinois?

Our most recent data shows that the best time of day to fly to Illinois is in the evening. Flights from Washington, D.C. to Illinois during this time can be as low as $371. Flights in the morning are often more expensive with an average ticket price of $463.

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

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

How far in advance should I book a flight to Illinois?

You are more likely to see cheaper flights to Illinois from Washington, D.C. when booking weeks ahead of your departure date. In general, you can expect to find flights to Illinois for around $334 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Illinois from Washington, D.C. for as low as $216 on momondo.

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

There are 4 cabin classes available to choose from on Washington, D.C. to Illinois 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 Washington, D.C. to Illinois flights?

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

Cheap Washington, D.C. to Illinois flight deals and tips

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

Best Price Found

$115

Fastest flight time

1h 55m

Direct flights

Every day

Airports in Illinois

98 airports
The best one-way flight to Illinois from Washington, D.C. in the past 72 hours is $115. The best round-trip flight deal from Washington, D.C. to Illinois found on momondo in the last 72 hours is $211.
The fastest flight from Washington, D.C. to Illinois takes 1h 55m
Direct flights go from Washington, D.C. to Illinois every day.
There are 98 airports in Illinois. From Washington, D.C. there are direct flights to Chicago Midway (MDW).
Search flight deals

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

    Prices for flights from Washington, D.C. to Illinois were last updated today.

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

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

    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 Washington, D.C. to Illinois.

  • What documentation or ID do you need to fly to Illinois?

    The travel and health documents you'll need for your trip to Illinois may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Illinois. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

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

Best airlines flying from Washington, D.C. to Illinois

Compare and see reviews for airlines that fly from Washington, D.C. to Illinois with momondo
Airline
Rating
Free Cancellation
Price
Spirit AirlinesPriceFrom $41Free CancellationRating
6.3
8,396 reviews
Search Spirit Airlines flights
FrontierPriceFrom $57Free CancellationRating
5.7
3,051 reviews
Search Frontier flights
United AirlinesPriceFrom $131Free CancellationRating
7.4
9,229 reviews
Search United Airlines flights
SouthwestPriceFrom $148Free CancellationRating
8.0
4,271 reviews
Search Southwest flights
American AirlinesPriceFrom $154Free CancellationRating
7.2
11,212 reviews
Search American Airlines flights
DeltaPriceFrom $194Free CancellationRating
7.9
8,132 reviews
Search Delta flights

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Washington, D.C. to Illinois for you.

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

Yes. momondo enables you to select and highlight flights to Illinois from Washington, D.C. with this policy.

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

momondo provides multiple filters to help you find the best flight to Illinois from Washington, D.C.. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

Yes. momondo can track prices for Washington, D.C. to Illinois flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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