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Cheap flights from Washington, D.C. to Illinois from $60

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 1/6. 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.
Frontier Logo
8:07 pm - 9:31 pm
BWI
-
ORD
2h 24mnonstop
Frontier Logo
4:20 pm - 7:22 pm
ORD
-
BWI
2h 02mnonstop
$82Frontier
Thu, Jan 8 - Fri, Jan 9
Frontier Logo
8:17 pm - 9:41 pm
BWI
-
ORD
2h 24mnonstop
Frontier Logo
12:48 pm - 3:50 pm
ORD
-
BWI
2h 02mnonstop
$83Frontier
Fri, Jan 9 - Mon, Jan 12
Southwest Logo
8:15 pm - 9:25 pm
BWI
-
MDW
2h 10mnonstop
Southwest Logo
9:50 am - 12:40 pm
MDW
-
BWI
1h 50mnonstop
$139Southwest
Thu, Jan 15 - Thu, Jan 22
Southwest Logo
10:25 am - 11:35 am
BWI
-
MDW
2h 10mnonstop
Southwest Logo
9:50 am - 12:40 pm
MDW
-
BWI
1h 50mnonstop
$149Southwest
Mon, Jan 12 - Sat, Jan 17
Delta Logo
12:09 pm - 4:26 pm
IAD
-
MLI
5h 17m1 stop
Delta Logo
5:11 pm - 12:24 am
MLI
-
IAD
6h 13m1 stop
$230Delta
Tue, Jan 13 - Tue, Jan 20
Delta Logo
6:05 am - 8:52 am
DCA
-
MDW
3h 47m1 stop
Delta Logo
6:45 am - 12:40 pm
MDW
-
DCA
4h 55m1 stop
$243Delta
Sat, Jan 17 - Sun, Jan 18
American Airlines Logo
7:40 am - 9:24 am
DCA
-
STL
2h 44mnonstop
American Airlines Logo
5:59 pm - 9:10 pm
STL
-
DCA
2h 11mnonstop
$261American Airlines
Thu, Jan 15 - Sun, Jan 18
United Airlines Logo
6:30 am - 12:13 pm
IAD
-
MLI
6h 43m1 stop
United Airlines Logo
10:47 am - 4:24 pm
MLI
-
IAD
4h 37m1 stop
$264United Airlines
Thu, Jan 1 - Mon, Jan 5
United Airlines Logo
8:40 am - 10:13 am
IAD
-
STL
2h 33mnonstop
United Airlines Logo
8:30 am - 11:40 am
STL
-
IAD
2h 10mnonstop
$265United Airlines
Tue, Jan 13 - Tue, Jan 20
American Airlines Logo
9:35 am - 1:03 pm
DCA
-
STL
4h 28m1 stop
American Airlines Logo
9:54 am - 12:59 pm
STL
-
DCA
2h 05mnonstop
$271American Airlines
Thu, Jan 15 - Sun, Jan 18

Frontier flights from Washington, D.C. to Illinois

Our best Frontier deals on Washington, D.C. to Illinois flight tickets
Frontier
Jan 8
BWI8:07 pmBaltimore/Washington
2h 24m
ORD9:31 pmChicago O'Hare Intl
Jan 9
ORD4:20 pmChicago O'Hare Intl
2h 02m
BWI7:22 pmBaltimore/Washington
$82
Find similar
Frontier
Jan 9
BWI1:07 pmBaltimore/Washington
2h 24m
ORD2:31 pmChicago O'Hare Intl
Jan 12
ORD12:48 pmChicago O'Hare Intl
2h 02m
BWI3:50 pmBaltimore/Washington
$83
Find similar
Frontier
Jan 11
BWI8:17 pmBaltimore/Washington
2h 24m
ORD9:41 pmChicago O'Hare Intl
Jan 16
ORD10:00 amChicago O'Hare Intl
2h 00m
BWI1:00 pmBaltimore/Washington
$86
Find similar

United Airlines flights from Washington, D.C. to Illinois

Our best United Airlines deals on Washington, D.C. to Illinois flight tickets
United Airlines
Jan 27
BWI10:05 amBaltimore/Washington
2h 20m
ORD11:25 amChicago O'Hare Intl
Jan 28
ORD6:15 pmChicago O'Hare Intl
2h 06m
BWI9:21 pmBaltimore/Washington
$139
Find similar
United Airlines
Dec 24
BWI5:19 pmBaltimore/Washington
2h 20m
ORD6:39 pmChicago O'Hare Intl
Dec 25
ORD6:20 pmChicago O'Hare Intl
2h 06m
BWI9:26 pmBaltimore/Washington
$174
Find similar
United Airlines
Dec 31
BWI5:19 pmBaltimore/Washington
2h 20m
ORD6:39 pmChicago O'Hare Intl
Jan 1
ORD2:00 pmChicago O'Hare Intl
1h 58m
BWI4:58 pmBaltimore/Washington
$185
Find similar

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 December 18, 2025.
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

Thu 1/8

8:07 pm-9:31 pm

Nonstop2h 24m

Chicago O'Hare Intl

Fri 1/9

4:20 pm-7:22 pm

Nonstop2h 02m

$82

BaltimoreChicago

BWI - ORD

BWIORD

Baltimore/Washington

Fri 1/9

8:17 pm-9:41 pm

Nonstop2h 24m

Chicago O'Hare Intl

Mon 1/12

12:48 pm-3:50 pm

Nonstop2h 02m

$83

BaltimoreChicago

BWI - MDW

BWIMDW

Baltimore/Washington

Thu 1/15

8:15 pm-9:25 pm

Nonstop2h 10m

Chicago Midway

Thu 1/22

9:50 am-12:40 pm

Nonstop1h 50m

$139

BaltimoreChicago

BWI - MDW

BWIMDW

Baltimore/Washington

Mon 1/12

10:25 am-11:35 am

Nonstop2h 10m

Chicago Midway

Sat 1/17

9:50 am-12:40 pm

Nonstop1h 50m

$149

Washington, D.C.Moline

IAD - MLI

IADMLI

Washington, D.C. Dulles Intl

Tue 1/13

12:09 pm-4:26 pm

1 stop5h 17m

Moline Quad-City

Tue 1/20

5:11 pm-12:24 am

1 stop6h 13m

$230

Washington, D.C.Chicago

DCA - MDW

DCAMDW

Washington, D.C. Reagan-National

Sat 1/17

6:05 am-8:52 am

1 stop3h 47m

Chicago Midway

Sun 1/18

6:45 am-12:40 pm

1 stop4h 55m

$243

Washington, D.C.St. Louis

DCA - STL

DCASTL

Washington, D.C. Reagan-National

Thu 1/15

7:40 am-9:24 am

Nonstop2h 44m

Lambert-St Louis

Sun 1/18

5:59 pm-9:10 pm

Nonstop2h 11m

$261

Washington, D.C.Moline

IAD - MLI

IADMLI

Washington, D.C. Dulles Intl

Thu 1/1

6:30 am-12:13 pm

1 stop6h 43m

Moline Quad-City

Mon 1/5

10:47 am-4:24 pm

1 stop4h 37m

$264

Washington, D.C.St. Louis

IAD - STL

IADSTL

Washington, D.C. Dulles Intl

Tue 1/13

8:40 am-10:13 am

Nonstop2h 33m

Lambert-St Louis

Tue 1/20

8:30 am-11:40 am

Nonstop2h 10m

$265

Washington, D.C.St. Louis

DCA - STL

DCASTL

Washington, D.C. Reagan-National

Thu 1/15

9:35 am-1:03 pm

1 stop4h 28m

Lambert-St Louis

Sun 1/18

9:54 am-12:59 pm

Nonstop2h 05m

$271

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 $221.

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 $397. Flights from Washington, D.C. to Illinois on a Monday will generally be more expensive and average around $564. 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 $348. Flights in the afternoon are often more expensive with an average ticket price of $475.

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 $324 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

$111

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 $111. The best round-trip flight deal from Washington, D.C. to Illinois found on momondo in the last 72 hours is $167.
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 O'Hare Intl (ORD), 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 $52Free CancellationRating
6.3
8,190 reviews
Search Spirit Airlines flights
FrontierPriceFrom $58Free CancellationRating
5.8
3,081 reviews
Search Frontier flights
United AirlinesPriceFrom $131Free CancellationRating
7.4
9,093 reviews
Search United Airlines flights
SouthwestPriceFrom $150Free CancellationRating
7.9
4,250 reviews
Search Southwest flights
American AirlinesPriceFrom $154Free CancellationRating
7.2
11,055 reviews
Search American Airlines flights
DeltaPriceFrom $234Free CancellationRating
7.9
8,008 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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