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Cheap flights from District of Columbia 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 District of Columbia to Illinois departing on 12/15. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from District of Columbia to Illinois

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
5:45 am - 2:40 pmIAD-ORD
9h 55m1 stop
Frontier Logo
1:24 pm - 11:05 pmORD-IAD
8h 41m1 stop
$146Frontier
Find Deal
Fri, Dec 12 - Sat, Dec 13
Frontier Logo
5:19 pm - 10:12 pmIAD-MDW
5h 53m1 stop
Frontier Logo
6:15 am - 4:24 pmMDW-IAD
9h 09m1 stop
$146Frontier
Find Deal
Fri, Dec 12 - Sun, Dec 14
Southwest Logo
8:25 am - 9:35 amDCA-MDW
2h 10mnonstop
Southwest Logo
5:40 pm - 8:30 pmMDW-DCA
1h 50mnonstop
$231Southwest
Find Deal
Sat, Dec 6 - Tue, Dec 9
Southwest Logo
9:00 pm - 10:15 pmDCA-MDW
2h 15mnonstop
Southwest Logo
4:35 pm - 7:25 pmMDW-DCA
1h 50mnonstop
$234Southwest
Find Deal
Tue, Feb 17 - Fri, Feb 20
American Airlines Logo
6:51 am - 1:43 pmDCA-STL
7h 52m1 stop
American Airlines Logo
6:00 pm - 9:15 pmSTL-DCA
2h 15mnonstop
$245American Airlines
Find Deal
Tue, Dec 2 - Tue, Dec 9
American Airlines Logo
2:06 pm - 6:07 pmIAD-PIA
5h 01m1 stop
American Airlines Logo
5:00 am - 1:20 pmPIA-IAD
7h 20m1 stop
$249American Airlines
Find Deal
Sat, Dec 6 - Sat, Dec 13
Delta Logo
12:20 pm - 4:26 pmDCA-MLI
5h 06m1 stop
Delta Logo
5:06 pm - 10:35 pmMLI-DCA
4h 29m1 stop
$249Delta
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Thu, Jan 8 - Sun, Jan 11
Delta Logo
12:09 pm - 4:26 pmIAD-MLI
5h 17m1 stop
Delta Logo
5:06 pm - 11:37 pmMLI-IAD
5h 31m1 stop
$249Delta
Find Deal
Thu, Jan 8 - Sun, Jan 11
United Airlines Logo
8:40 am - 10:13 amIAD-STL
2h 33mnonstop
United Airlines Logo
8:05 am - 4:00 pmSTL-IAD
6h 55m1 stop
$275United Airlines
Find Deal
Thu, Jan 22 - Sat, Jan 24
United Airlines Logo
6:30 am - 10:09 amDCA-MLI
4h 39m1 stop
United Airlines Logo
8:30 am - 2:13 pmMLI-DCA
4h 43m1 stop
$319United Airlines
Find Deal
Sat, Mar 7 - Tue, Mar 10

Frontier flights from District of Columbia to Illinois

Our best Frontier deals on District of Columbia to Illinois flight tickets
Frontier
Dec 12
IAD5:19 pmWashington, D.C. Dulles Intl
6h 05m
1 stop
ORD10:24 pmChicago O'Hare Intl
Dec 14
ORD6:11 amChicago O'Hare Intl
9h 13m
1 stop
IAD4:24 pmWashington, D.C. Dulles Intl
$146
Find similar
Frontier
Dec 18
IAD5:35 amWashington, D.C. Dulles Intl
13h 03m
1 stop
MDW5:38 pmChicago Midway
Jan 1
MDW6:12 amChicago Midway
11h 04m
1 stop
IAD6:16 pmWashington, D.C. Dulles Intl
$147
Find similar
Frontier
Jan 9
IAD5:41 pmWashington, D.C. Dulles Intl
5h 58m
1 stop
ORD10:39 pmChicago O'Hare Intl
Jan 14
ORD6:00 pmChicago O'Hare Intl
16h 43m
1 stop
IAD11:43 amWashington, D.C. Dulles Intl
$148
Find similar

JetBlue flights from District of Columbia to Illinois

Our best JetBlue deals on District of Columbia to Illinois flight tickets
JetBlue
Mar 6
DCA6:00 amWashington, D.C. Reagan-National
6h 49m
1 stop
ORD11:49 amChicago O'Hare Intl
Mar 10
ORD10:00 amChicago O'Hare Intl
7h 55m
1 stop
DCA6:55 pmWashington, D.C. Reagan-National
$186
Find similar
JetBlue
Nov 26
DCA2:10 pmWashington, D.C. Reagan-National
6h 40m
1 stop
ORD7:50 pmChicago O'Hare Intl
Nov 30
ORD8:04 amChicago O'Hare Intl
5h 55m
1 stop
DCA2:59 pmWashington, D.C. Reagan-National
$196
Find similar
JetBlue
Apr 7
DCA6:05 amWashington, D.C. Reagan-National
7h 45m
1 stop
ORD12:50 pmChicago O'Hare Intl
Apr 15
ORD11:30 amChicago O'Hare Intl
5h 29m
1 stop
DCA5:59 pmWashington, D.C. Reagan-National
$198
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from District of Columbia 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 November 16, 2025.
Use the filters below to find and compare flights from District of Columbia to Illinois that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.Chicago

IAD - ORD

IADORD

Washington, D.C. Dulles Intl

Fri 12/12

5:45 am-2:40 pm

1 stop9h 55m

Chicago O'Hare Intl

Sat 12/13

1:24 pm-11:05 pm

1 stop8h 41m

$146

Washington, D.C.Chicago

IAD - MDW

IADMDW

Washington, D.C. Dulles Intl

Fri 12/12

5:19 pm-10:12 pm

1 stop5h 53m

Chicago Midway

Sun 12/14

6:15 am-4:24 pm

1 stop9h 09m

$146

Washington, D.C.Chicago

DCA - MDW

DCAMDW

Washington, D.C. Reagan-National

Sat 12/6

8:25 am-9:35 am

Nonstop2h 10m

Chicago Midway

Tue 12/9

5:40 pm-8:30 pm

Nonstop1h 50m

$231

Washington, D.C.Chicago

DCA - MDW

DCAMDW

Washington, D.C. Reagan-National

Tue 2/17

9:00 pm-10:15 pm

Nonstop2h 15m

Chicago Midway

Fri 2/20

4:35 pm-7:25 pm

Nonstop1h 50m

$234

Washington, D.C.St. Louis

DCA - STL

DCASTL

Washington, D.C. Reagan-National

Tue 12/2

6:51 am-1:43 pm

1 stop7h 52m

Lambert-St Louis

Tue 12/9

6:00 pm-9:15 pm

Nonstop2h 15m

$245

Washington, D.C.Peoria

IAD - PIA

IADPIA

Washington, D.C. Dulles Intl

Sat 12/6

2:06 pm-6:07 pm

1 stop5h 01m

Greater Peoria

Sat 12/13

5:00 am-1:20 pm

1 stop7h 20m

$249

Washington, D.C.Moline

DCA - MLI

DCAMLI

Washington, D.C. Reagan-National

Thu 1/8

12:20 pm-4:26 pm

1 stop5h 06m

Moline Quad-City

Sun 1/11

5:06 pm-10:35 pm

1 stop4h 29m

$249

Washington, D.C.Moline

IAD - MLI

IADMLI

Washington, D.C. Dulles Intl

Thu 1/8

12:09 pm-4:26 pm

1 stop5h 17m

Moline Quad-City

Sun 1/11

5:06 pm-11:37 pm

1 stop5h 31m

$249

Washington, D.C.St. Louis

IAD - STL

IADSTL

Washington, D.C. Dulles Intl

Thu 1/22

8:40 am-10:13 am

Nonstop2h 33m

Lambert-St Louis

Sat 1/24

8:05 am-4:00 pm

1 stop6h 55m

$275

Washington, D.C.Moline

DCA - MLI

DCAMLI

Washington, D.C. Reagan-National

Sat 3/7

6:30 am-10:09 am

1 stop4h 39m

Moline Quad-City

Tue 3/10

8:30 am-2:13 pm

1 stop4h 43m

$319

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 District of Columbia 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 District of Columbia 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 $224.

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

The cheapest day to depart from District of Columbia to Illinois is on a Friday when prices can be found for as low as $395. Flights from District of Columbia to Illinois on a Monday will generally be more expensive and average around $559. 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 District of Columbia to Illinois during this time can be as low as $327. Flights in the afternoon are often more expensive with an average ticket price of $483.

What is the cheapest District of Columbia to Illinois flight route?

Fly from Baltimore/Washington to Chicago Midway for the best District of Columbia - 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 District of Columbia when booking weeks ahead of your departure date. In general, you can expect to find flights to Illinois for around $330 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Illinois from District of Columbia for as low as $216 on momondo.

What cabin class options are available on District of Columbia to Illinois flights?

There are 4 cabin classes available to choose from on District of Columbia 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 District of Columbia to Illinois flights?

You could potentially save up to 10% on your flight if you consider stops on a District of Columbia to Illinois flight.

Cheap District of Columbia to Illinois flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from District of Columbia to Illinois

Best Price Found

$156

Fastest flight time

1h 55m

Direct flights

Every day

Airports in Illinois

2 airports
The best one-way flight to Illinois from District of Columbia in the past 72 hours is $156. The best round-trip flight deal from District of Columbia to Illinois found on momondo in the last 72 hours is $296.
The fastest flight from District of Columbia to Illinois takes 1h 55m
Direct flights go from District of Columbia to Illinois every day.
There are 2 airports near Illinois: Chicago O'Hare Intl (ORD), Chicago Midway (MDW)
Search flight deals

  • When did momondo last update prices for flights from District of Columbia to Illinois?

    Prices for flights from District of Columbia to Illinois are refreshed on a daily basis.

  • How many operators does momondo search for flights from District of Columbia to Illinois?

  • How old do you have to be to fly from District of Columbia to Illinois?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from District of Columbia to Illinois.

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

    The travel and health documents required for your trip to Illinois can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Illinois. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular plane model from District of Columbia to Illinois?

Best airlines flying from District of Columbia to Illinois

Compare and see reviews for airlines that fly from District of Columbia to Illinois with momondo
Airline
Rating
Free Cancellation
Price
Spirit AirlinesPriceFrom $52Free CancellationRating
6.3
8,143 reviews
Search Spirit Airlines flights
FrontierPriceFrom $69Free CancellationRating
5.8
3,109 reviews
Search Frontier flights
DeltaPriceFrom $98Free CancellationRating
7.9
8,010 reviews
Search Delta flights
American AirlinesPriceFrom $154Free CancellationRating
7.2
11,051 reviews
Search American Airlines flights
SouthwestPriceFrom $156Free CancellationRating
8.0
4,245 reviews
Search Southwest flights
United AirlinesPriceFrom $158Free CancellationRating
7.4
9,016 reviews
Search United Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from District of Columbia to Illinois?

Finding the right flight to Illinois from District of Columbia is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Illinois quick and easy, saving you time and money.

Can I find flights from District of Columbia to Illinois with flexible booking policies on momondo?

All flight searches from District of Columbia to Illinois on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from District of Columbia to Illinois?

Once all potential District of Columbia to Illinois flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from District of Columbia to Illinois right now. Can momondo alert me if prices change?

Yes. momondo can track prices for District of Columbia 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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