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Cheap flights from District of Columbia to Illinois from $72

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 10/9. 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

Frontier Logo
6:00 am - 10:41 amIAD-ORD
5h 41m1 stop
Frontier Logo
5:45 pm - 11:55 pmORD-IAD
5h 10m1 stop
$141Frontier
Find Deal
Thu, Nov 13 - Sat, Nov 15
Frontier Logo
5:34 pm - 10:08 pmIAD-MDW
5h 34m1 stop
Frontier Logo
1:56 pm - 8:20 pmMDW-IAD
5h 24m1 stop
$141Frontier
Find Deal
Fri, Nov 7 - Tue, Nov 11
United Airlines Logo
8:30 am - 11:50 amDCA-MLI
4h 20m1 stop
United Airlines Logo
5:35 am - 10:58 amMLI-DCA
4h 23m1 stop
$240United Airlines
Find Deal
Fri, Oct 31 - Sun, Nov 2
United Airlines Logo
1:00 pm - 4:54 pmDCA-MLI
4h 54m1 stop
United Airlines Logo
6:30 am - 12:59 pmMLI-DCA
5h 29m1 stop
$249United Airlines
Find Deal
Thu, Oct 16 - Thu, Oct 23
American Airlines Logo
11:25 am - 4:56 pmIAD-MLI
6h 31m1 stop
American Airlines Logo
6:17 am - 1:35 pmMLI-IAD
6h 18m1 stop
$249American Airlines
Find Deal
Wed, Nov 5 - Tue, Nov 11
American Airlines Logo
6:59 am - 10:52 amDCA-MLI
4h 53m1 stop
American Airlines Logo
4:29 pm - 11:59 pmMLI-DCA
6h 30m1 stop
$254American Airlines
Find Deal
Fri, Oct 24 - Mon, Oct 27
Southwest Logo
11:35 am - 12:40 pmDCA-MDW
2h 05mnonstop
Southwest Logo
5:40 pm - 8:35 pmMDW-DCA
1h 55mnonstop
$257Southwest
Find Deal
Sat, Oct 18 - Tue, Oct 21
Southwest Logo
6:55 pm - 7:55 pmDCA-MDW
2h 00mnonstop
Southwest Logo
5:40 pm - 8:35 pmMDW-DCA
1h 55mnonstop
$261Southwest
Find Deal
Mon, Oct 20 - Tue, Oct 21
Delta Logo
6:00 am - 8:40 amDCA-MDW
3h 40m1 stop
Delta Logo
6:23 pm - 10:59 pmMDW-DCA
3h 36m1 stop
$277Delta
Find Deal
Sat, Oct 18 - Sat, Oct 18
Delta Logo
12:42 pm - 6:25 pmDCA-MDW
6h 43m1 stop
Delta Logo
1:08 pm - 6:59 pmMDW-DCA
4h 51m1 stop
$281Delta
Find Deal
Tue, Oct 28 - Thu, Oct 30

Frontier flights from District of Columbia to Illinois

Our best Frontier deals on District of Columbia to Illinois flight tickets
Frontier
Nov 13
IAD6:00 amWashington, D.C. Dulles Intl
5h 41m
1 stop
ORD10:41 amChicago O'Hare Intl
Nov 15
ORD5:45 pmChicago O'Hare Intl
5h 10m
1 stop
IAD11:55 pmWashington, D.C. Dulles Intl
$141
Find similar
Frontier
Oct 18
IAD4:22 pmWashington, D.C. Dulles Intl
8h 07m
1 stop
ORD11:29 pmChicago O'Hare Intl
Oct 20
ORD12:28 pmChicago O'Hare Intl
9h 50m
1 stop
IAD11:18 pmWashington, D.C. Dulles Intl
$143
Find similar
Frontier
Oct 6
IAD1:55 pmWashington, D.C. Dulles Intl
10h 44m
1 stop
ORD11:39 pmChicago O'Hare Intl
Oct 7
ORD11:00 amChicago O'Hare Intl
7h 46m
1 stop
IAD7:46 pmWashington, D.C. Dulles Intl
$144
Find similar

JetBlue flights from District of Columbia to Illinois

Our best JetBlue deals on District of Columbia to Illinois flight tickets
JetBlue
Oct 14
DCA6:25 amWashington, D.C. Reagan-National
6h 57m
1 stop
ORD12:22 pmChicago O'Hare Intl
Oct 21
ORD1:36 pmChicago O'Hare Intl
4h 46m
1 stop
DCA7:22 pmWashington, D.C. Reagan-National
$203
Find similar
JetBlue
Nov 4
DCA4:55 pmWashington, D.C. Reagan-National
4h 57m
1 stop
ORD8:52 pmChicago O'Hare Intl
Nov 7
ORD6:45 amChicago O'Hare Intl
6h 51m
1 stop
DCA2:36 pmWashington, D.C. Reagan-National
$208
Find similar
JetBlue
Nov 14
DCA4:55 pmWashington, D.C. Reagan-National
4h 57m
1 stop
ORD8:52 pmChicago O'Hare Intl
Nov 16
ORD6:45 amChicago O'Hare Intl
6h 51m
1 stop
DCA2:36 pmWashington, D.C. Reagan-National
$213
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 September 25, 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

Thu 11/13

6:00 am-10:41 am

1 stop5h 41m

Chicago O'Hare Intl

Sat 11/15

5:45 pm-11:55 pm

1 stop5h 10m

$141

Washington, D.C.Chicago

IAD - MDW

IADMDW

Washington, D.C. Dulles Intl

Fri 11/7

5:34 pm-10:08 pm

1 stop5h 34m

Chicago Midway

Tue 11/11

1:56 pm-8:20 pm

1 stop5h 24m

$141

Washington, D.C.Moline

DCA - MLI

DCAMLI

Washington, D.C. Reagan-National

Fri 10/31

8:30 am-11:50 am

1 stop4h 20m

Moline Quad-City

Sun 11/2

5:35 am-10:58 am

1 stop4h 23m

$240

Washington, D.C.Moline

DCA - MLI

DCAMLI

Washington, D.C. Reagan-National

Thu 10/16

1:00 pm-4:54 pm

1 stop4h 54m

Moline Quad-City

Thu 10/23

6:30 am-12:59 pm

1 stop5h 29m

$249

Washington, D.C.Moline

IAD - MLI

IADMLI

Washington, D.C. Dulles Intl

Wed 11/5

11:25 am-4:56 pm

1 stop6h 31m

Moline Quad-City

Tue 11/11

6:17 am-1:35 pm

1 stop6h 18m

$249

Washington, D.C.Moline

DCA - MLI

DCAMLI

Washington, D.C. Reagan-National

Fri 10/24

6:59 am-10:52 am

1 stop4h 53m

Moline Quad-City

Mon 10/27

4:29 pm-11:59 pm

1 stop6h 30m

$254

Washington, D.C.Chicago

DCA - MDW

DCAMDW

Washington, D.C. Reagan-National

Sat 10/18

11:35 am-12:40 pm

Nonstop2h 05m

Chicago Midway

Tue 10/21

5:40 pm-8:35 pm

Nonstop1h 55m

$257

Washington, D.C.Chicago

DCA - MDW

DCAMDW

Washington, D.C. Reagan-National

Mon 10/20

6:55 pm-7:55 pm

Nonstop2h 00m

Chicago Midway

Tue 10/21

5:40 pm-8:35 pm

Nonstop1h 55m

$261

Washington, D.C.Chicago

DCA - MDW

DCAMDW

Washington, D.C. Reagan-National

Sat 10/18

6:00 am-8:40 am

1 stop3h 40m

Chicago Midway

Sat 10/18

6:23 pm-10:59 pm

1 stop3h 36m

$277

Washington, D.C.Chicago

DCA - MDW

DCAMDW

Washington, D.C. Reagan-National

Tue 10/28

12:42 pm-6:25 pm

1 stop6h 43m

Chicago Midway

Thu 10/30

1:08 pm-6:59 pm

1 stop4h 51m

$281

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 $222, 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 August is also cheap. Prices for this month can be found on momondo for an average of $227.

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 $401. Flights from District of Columbia to Illinois on a Monday will generally be more expensive and average around $543. 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 $313. Flights in the afternoon are often more expensive with an average ticket price of $490.

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 $328 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 $254 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?

No. A direct flight is the cheapest option for a flight between District of Columbia to Illinois.

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

$148

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 $148. The best round-trip flight deal from District of Columbia to Illinois found on momondo in the last 72 hours is $266.
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 $46Free CancellationRating
6.3
8,042 reviews
Search Spirit Airlines flights
FrontierPriceFrom $67Free CancellationRating
5.8
3,163 reviews
Search Frontier flights
DeltaPriceFrom $98Free CancellationRating
7.9
7,973 reviews
Search Delta flights
American AirlinesPriceFrom $154Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
SouthwestPriceFrom $157Free CancellationRating
8.0
4,246 reviews
Search Southwest flights
United AirlinesPriceFrom $158Free CancellationRating
7.4
8,928 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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