How many flights depart from Washington, D.C. to Illinois on average per week?

As of August 2026, 596 flights take off from Washington, D.C. and land in Illinois each week. The most common flight departure day for this route is Wed, with 26% of weekly flights taking off on this day.

How long is the flight from Washington, D.C. to Illinois?

The flight from Washington, D.C. to Illinois depends on which airports you’re departing and arriving from and whether or not you have a layover. If you fly from Washington, D.C. (a popular airport in Washington, D.C.) to Chicago O'Hare Intl Airport (the most popular airport in Illinois), then the flight time is 2h on average. If you fly from Baltimore (another popular airport in Washington, D.C.) to Chicago O'Hare Intl Airport, then the average flight time is 2h 02m.

What airlines fly to Illinois?

United Airlines, American Airlines and Frontier are the top three most popular airlines that fly to Illinois from Washington, D.C. according to our data. United Airlines is the first choice among our users, with 55% of people opting to fly with this airline when traveling to Illinois. Keep in mind that there are 5 different airlines that fly to Illinois on a routine basis, so you have a few additional options to choose from.

What is the cheapest airline that flies from Washington, D.C. to Illinois?

Frontier, United Airlines, and Delta are the most popular carriers operating from Washington, D.C. to Illinois

How many flights depart from Washington, D.C. to Illinois on average per day?

85 flights are operational daily from Washington, D.C. to Illinois as of August 2026. The most popular departure time for this route is 5:00PM, with 46% of flights per day taking off at noon.

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?

The number of operators available for flights from Washington, D.C. to Illinois is 5 as of August 2026.

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.

$64 Cheap Flights from Washington, D.C. to Illinois in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Washington, D.C. to Illinois

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

9:20 pm - 9:40 amBWI Baltimore/Washington-STL Lambert-St Louis

13h 20m1 stop Atlanta Hartsfield-Jackson

10:35 am - 6:36 pmSTL Lambert-St Louis-BWI Baltimore/Washington

7h 01m1 stop Atlanta Hartsfield-Jackson

$137Frontier

Wed, Nov 11 - Mon, Nov 16

6:45 am - 5:22 pmBWI Baltimore/Washington-STL Lambert-St Louis

11h 37m1 stop Atlanta Hartsfield-Jackson

6:17 pm - 5:43 pmSTL Lambert-St Louis-BWI Baltimore/Washington

22h 26m1 stop Atlanta Hartsfield-Jackson

$138Frontier

Thu, Sep 3 - Mon, Sep 7

6:00 am - 1:20 pmDCA Washington, D.C. Reagan-National-MDW Chicago Midway

8h 20m2 stops Nashville Intl Grand Rapids Gerald R. Ford Intl

5:55 am - 8:40 amMDW Chicago Midway-DCA Washington, D.C. Reagan-National

1h 45mnonstop

$192Southwest

Sat, Sep 5 - Sun, Sep 6

1:20 pm - 4:40 pmDCA Washington, D.C. Reagan-National-MDW Chicago Midway

4h 20m1 stop Columbus

8:55 am - 3:55 pmMDW Chicago Midway-DCA Washington, D.C. Reagan-National

6h 00m1 stop Nashville Intl

$197Southwest

Sat, Sep 5 - Sun, Sep 6

6:00 am - 9:42 amIAD Washington, D.C. Dulles Intl-MDW Chicago Midway

4h 42m1 stop Detroit Metropolitan Wayne County

6:44 pm - 11:21 pmMDW Chicago Midway-IAD Washington, D.C. Dulles Intl

3h 37m1 stop Detroit Metropolitan Wayne County

$197Delta

Thu, Nov 26 - Thu, Nov 26

5:47 pm - 10:36 pmIAD Washington, D.C. Dulles Intl-MDW Chicago Midway

5h 49m1 stop Atlanta Hartsfield-Jackson

5:03 pm - 11:14 pmMDW Chicago Midway-IAD Washington, D.C. Dulles Intl

5h 11m1 stop Detroit Metropolitan Wayne County

$197Delta

Sat, Sep 5 - Fri, Sep 11

2:00 pm - 3:16 pmDCA Washington, D.C. Reagan-National-ORD Chicago O'Hare Intl

2h 16mnonstop

12:40 pm - 3:42 pmORD Chicago O'Hare Intl-DCA Washington, D.C. Reagan-National

2h 02mnonstop

$216United Airlines

Wed, Sep 9 - Fri, Sep 11

2:00 pm - 3:16 pmDCA Washington, D.C. Reagan-National-ORD Chicago O'Hare Intl

2h 16mnonstop

7:00 am - 9:59 amORD Chicago O'Hare Intl-DCA Washington, D.C. Reagan-National

1h 59mnonstop

$216United Airlines

Thu, Sep 3 - Sun, Sep 6

8:05 am - 9:30 amDCA Washington, D.C. Reagan-National-ORD Chicago O'Hare Intl

2h 25mnonstop

6:00 am - 9:16 amORD Chicago O'Hare Intl-DCA Washington, D.C. Reagan-National

2h 16mnonstop

$216American Airlines

Sat, Sep 5 - Mon, Sep 7

11:35 am - 12:54 pmDCA Washington, D.C. Reagan-National-ORD Chicago O'Hare Intl

2h 19mnonstop

9:56 am - 12:57 pmORD Chicago O'Hare Intl-DCA Washington, D.C. Reagan-National

2h 01mnonstop

$216American Airlines

Sat, Sep 5 - Tue, Sep 8

Cheap last minute flights

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8:33 pm - 8:02 amIAD Washington, D.C. Dulles Intl-ORD Chicago O'Hare Intl

12h 29m1 stop Atlanta Hartsfield-Jackson

9:20 am - 6:29 pmORD Chicago O'Hare Intl-IAD Washington, D.C. Dulles Intl

8h 09m1 stop Dallas/Fort Worth

$256Frontier

Sat, Aug 8 - Mon, Aug 24

4:44 pm - 12:33 amBWI Baltimore/Washington-ORD Chicago O'Hare Intl

8h 49m1 stop Houston George Bush Intcntl

1:03 pm - 4:13 pmORD Chicago O'Hare Intl-BWI Baltimore/Washington

2h 10mnonstop

$258Frontier

Mon, Aug 10 - Thu, Aug 20

1:46 pm - 3:10 pmDCA Washington, D.C. Reagan-National-ORD Chicago O'Hare Intl

2h 24mnonstop

10:53 am - 1:54 pmORD Chicago O'Hare Intl-DCA Washington, D.C. Reagan-National

2h 01mnonstop

$291American Airlines

Tue, Aug 11 - Sat, Aug 15

5:00 am - 9:00 amDCA Washington, D.C. Reagan-National-ORD Chicago O'Hare Intl

5h 00m1 stop Charlotte Douglas

6:59 am - 9:56 amORD Chicago O'Hare Intl-DCA Washington, D.C. Reagan-National

1h 57mnonstop

$301American Airlines

Tue, Aug 11 - Sat, Aug 15

6:38 pm - 8:02 pmBWI Baltimore/Washington-ORD Chicago O'Hare Intl

2h 24mnonstop

6:29 pm - 9:43 pmORD Chicago O'Hare Intl-BWI Baltimore/Washington

2h 14mnonstop

$369United Airlines

Fri, Aug 7 - Tue, Sep 8

6:30 am - 7:30 amBWI Baltimore/Washington-MDW Chicago Midway

2h 00mnonstop

12:45 pm - 3:30 pmMDW Chicago Midway-BWI Baltimore/Washington

1h 45mnonstop

$369Southwest

Fri, Aug 7 - Tue, Sep 8

4:10 pm - 7:15 pmBWI Baltimore/Washington-MDW Chicago Midway

4h 05m1 stop Albany Intl

6:30 am - 9:15 amMDW Chicago Midway-BWI Baltimore/Washington

1h 45mnonstop

$375Southwest

Fri, Aug 7 - Tue, Sep 8

9:39 am - 12:39 pmDCA Washington, D.C. Reagan-National-MDW Chicago Midway

4h 00m1 stop Detroit Metropolitan Wayne County

6:42 pm - 10:59 pmMDW Chicago Midway-DCA Washington, D.C. Reagan-National

3h 17m1 stop Detroit Metropolitan Wayne County

$376Delta

Tue, Aug 11 - Sat, Aug 22

6:20 am - 10:23 amDCA Washington, D.C. Reagan-National-ORD Chicago O'Hare Intl

5h 03m1 stop New York LaGuardia

5:18 pm - 10:59 pmORD Chicago O'Hare Intl-DCA Washington, D.C. Reagan-National

4h 41m1 stop Detroit Metropolitan Wayne County

$376Delta

Tue, Aug 11 - Sat, Aug 22

1:00 pm - 2:18 pmDCA Washington, D.C. Reagan-National-ORD Chicago O'Hare Intl

2h 18mnonstop

7:00 am - 9:56 amORD Chicago O'Hare Intl-DCA Washington, D.C. Reagan-National

1h 56mnonstop

$388United Airlines

Fri, Aug 7 - Wed, Sep 23

Cheap direct flights

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11:09 am - 12:32 pmBWI Baltimore/Washington-ORD Chicago O'Hare Intl

2h 23mnonstop

7:00 am - 10:14 amORD Chicago O'Hare Intl-BWI Baltimore/Washington

2h 14mnonstop

$195Frontier

Wed, Oct 21 - Sun, Oct 25

5:03 pm - 6:27 pmBWI Baltimore/Washington-ORD Chicago O'Hare Intl

2h 24mnonstop

6:20 am - 9:25 amORD Chicago O'Hare Intl-BWI Baltimore/Washington

2h 05mnonstop

$195Frontier

Sat, Sep 19 - Sun, Sep 20

11:09 am - 12:32 pmBWI Baltimore/Washington-ORD Chicago O'Hare Intl

2h 23mnonstop

7:00 am - 10:14 amORD Chicago O'Hare Intl-BWI Baltimore/Washington

2h 14mnonstop

$195Frontier

Sat, Oct 17 - Sun, Oct 18

10:35 am - 11:53 amIAD Washington, D.C. Dulles Intl-ORD Chicago O'Hare Intl

2h 18mnonstop

6:15 pm - 9:20 pmORD Chicago O'Hare Intl-IAD Washington, D.C. Dulles Intl

2h 05mnonstop

$216United Airlines

Sat, Aug 29 - Sat, Sep 5

6:11 am - 7:30 amIAD Washington, D.C. Dulles Intl-ORD Chicago O'Hare Intl

2h 19mnonstop

11:15 am - 2:03 pmORD Chicago O'Hare Intl-IAD Washington, D.C. Dulles Intl

1h 48mnonstop

$216United Airlines

Thu, Nov 26 - Tue, Dec 1

8:05 am - 9:30 amDCA Washington, D.C. Reagan-National-ORD Chicago O'Hare Intl

2h 25mnonstop

6:00 am - 9:16 amORD Chicago O'Hare Intl-DCA Washington, D.C. Reagan-National

2h 16mnonstop

$216American Airlines

Sat, Sep 5 - Mon, Sep 7

11:35 am - 12:54 pmDCA Washington, D.C. Reagan-National-ORD Chicago O'Hare Intl

2h 19mnonstop

9:56 am - 12:57 pmORD Chicago O'Hare Intl-DCA Washington, D.C. Reagan-National

2h 01mnonstop

$216American Airlines

Sat, Sep 5 - Tue, Sep 8

6:40 pm - 7:40 pmDCA Washington, D.C. Reagan-National-MDW Chicago Midway

2h 00mnonstop

8:05 am - 11:05 amMDW Chicago Midway-DCA Washington, D.C. Reagan-National

2h 00mnonstop

$216Southwest

Sat, Sep 5 - Sat, Sep 12

9:15 pm - 10:15 pmDCA Washington, D.C. Reagan-National-MDW Chicago Midway

2h 00mnonstop

9:00 pm - 11:55 pmMDW Chicago Midway-DCA Washington, D.C. Reagan-National

1h 55mnonstop

$216Southwest

Fri, Sep 11 - Mon, Sep 14

6:15 am - 7:29 amIAD Washington, D.C. Dulles Intl-ORD Chicago O'Hare Intl

2h 14mnonstop

6:25 am - 9:13 amORD Chicago O'Hare Intl-IAD Washington, D.C. Dulles Intl

1h 48mnonstop

$216United Airlines

Wed, Sep 9 - Fri, Sep 11

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Frontier flights from Washington, D.C. to Illinois

Our best Frontier deals on Washington, D.C. to Illinois flight tickets

Frontier

Nov 11

BWI9:20 pmBaltimore/Washington

13h 20m

1 stop

STL9:40 amLambert-St Louis

Nov 16

STL10:35 amLambert-St Louis

7h 01m

1 stop

BWI6:36 pmBaltimore/Washington

$137

Frontier

Sep 3

BWI6:45 amBaltimore/Washington

11h 37m

1 stop

STL5:22 pmLambert-St Louis

Sep 7

STL6:17 pmLambert-St Louis

22h 26m

1 stop

BWI5:43 pmBaltimore/Washington

$138

Frontier

Nov 11

BWI9:20 pmBaltimore/Washington

13h 20m

1 stop

STL9:40 amLambert-St Louis

Nov 15

STL10:35 amLambert-St Louis

20h 54m

1 stop

BWI8:29 amBaltimore/Washington

$139

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

Our best American Airlines deals on Washington, D.C. to Illinois flight tickets

American Airlines

Sep 11

DCA10:17 amWashington, D.C. Reagan-National

2h 24m

ORD11:41 amChicago O'Hare Intl

Sep 14

ORD6:00 amChicago O'Hare Intl

2h 20m

DCA9:20 amWashington, D.C. Reagan-National

$217

American Airlines

Sep 11

BWI6:16 pmBaltimore/Washington

2h 47m

ORD8:03 pmChicago O'Hare Intl

Sep 14

ORD6:46 pmChicago O'Hare Intl

2h 10m

BWI9:56 pmBaltimore/Washington

$221

American Airlines

Sep 2

DCA5:00 amWashington, D.C. Reagan-National

5h 00m

1 stop

ORD9:00 amChicago O'Hare Intl

Sep 5

ORD6:59 amChicago O'Hare Intl

1h 57m

DCA9:56 amWashington, D.C. Reagan-National

$226

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BaltimoreSt. Louis

BWI Baltimore/Washington - STL Lambert-St Louis

BWISTL

Baltimore/Washington

Wed 11/11

9:20 pm-9:40 am

1 stop13h 20m

Lambert-St Louis

Mon 11/16

10:35 am-6:36 pm

1 stop7h 01m

$137

BaltimoreSt. Louis

BWI Baltimore/Washington - STL Lambert-St Louis

BWISTL

Baltimore/Washington

Thu 9/3

6:45 am-5:22 pm

1 stop11h 37m

Lambert-St Louis

Mon 9/7

6:17 pm-5:43 pm

1 stop22h 26m

$138

Washington, D.C.Chicago

DCA Washington, D.C. Reagan-National - MDW Chicago Midway

DCAMDW

Washington, D.C. Reagan-National

Sat 9/5

6:00 am-1:20 pm

2 stops8h 20m

Chicago Midway

Sun 9/6

5:55 am-8:40 am

Nonstop1h 45m

$192

Washington, D.C.Chicago

DCA Washington, D.C. Reagan-National - MDW Chicago Midway

DCAMDW

Washington, D.C. Reagan-National

Sat 9/5

1:20 pm-4:40 pm

1 stop4h 20m

Chicago Midway

Sun 9/6

8:55 am-3:55 pm

1 stop6h 00m

$197

Washington, D.C.Chicago

IAD Washington, D.C. Dulles Intl - MDW Chicago Midway

IADMDW

Washington, D.C. Dulles Intl

Thu 11/26

6:00 am-9:42 am

1 stop4h 42m

Chicago Midway

Thu 11/26

6:44 pm-11:21 pm

1 stop3h 37m

$197

Washington, D.C.Chicago

IAD Washington, D.C. Dulles Intl - MDW Chicago Midway

IADMDW

Washington, D.C. Dulles Intl

Sat 9/5

5:47 pm-10:36 pm

1 stop5h 49m

Chicago Midway

Fri 9/11

5:03 pm-11:14 pm

1 stop5h 11m

$197

Washington, D.C.Chicago

DCA Washington, D.C. Reagan-National - ORD Chicago O'Hare Intl

DCAORD

Washington, D.C. Reagan-National

Wed 9/9

2:00 pm-3:16 pm

Nonstop2h 16m

Chicago O'Hare Intl

Fri 9/11

12:40 pm-3:42 pm

Nonstop2h 02m

$216

Quickest round-trip

Washington, D.C.Chicago

DCA Washington, D.C. Reagan-National - ORD Chicago O'Hare Intl

DCAORD

Washington, D.C. Reagan-National

Thu 9/3

2:00 pm-3:16 pm

Nonstop2h 16m

Chicago O'Hare Intl

Sun 9/6

7:00 am-9:59 am

Nonstop1h 59m

$216

Washington, D.C.Chicago

DCA Washington, D.C. Reagan-National - ORD Chicago O'Hare Intl

DCAORD

Washington, D.C. Reagan-National

Sat 9/5

8:05 am-9:30 am

Nonstop2h 25m

Chicago O'Hare Intl

Mon 9/7

6:00 am-9:16 am

Nonstop2h 16m

$216

Washington, D.C.Chicago

DCA Washington, D.C. Reagan-National - ORD Chicago O'Hare Intl

DCAORD

Washington, D.C. Reagan-National

Sat 9/5

11:35 am-12:54 pm

Nonstop2h 19m

Chicago O'Hare Intl

Tue 9/8

9:56 am-12:57 pm

Nonstop2h 01m

$216

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

Prices

Airlines

Other information

What is the cheapest month to fly to Illinois?

The cheapest month to fly to Illinois from Washington, D.C. is in October. Flight prices, which tend to average around $272, 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 October, then flying in September is also cheap. Prices for this month can be found on momondo for an average of $277.

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 Thursday when prices can be found for as low as $425. Flights from Washington, D.C. to Illinois on a Monday will generally be more expensive and average around $588. 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 $431. Flights in the afternoon are often more expensive with an average ticket price of $509.

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

Fly from Washington, D.C. Reagan-National to Chicago Midway for the best Washington, D.C. - Illinois flight prices

How far in advance should I book a flight from Washington, D.C. 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 $398 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 $284 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	$177
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 $177. The best round-trip flight deal from Washington, D.C. to Illinois found on momondo in the last 72 hours is $271.

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).

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Frequently asked questions about flying from Washington, D.C. to Illinois

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?
The number of operators available for flights from Washington, D.C. to Illinois is 5 as of August 2026.
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?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from Washington, D.C. to Illinois is Boeing 737 MAX 8 (15.14% of total bookings). The next most popular plane models are Boeing 737-800 (13.06%), Boeing 737-900 (9.55%), and Airbus A319 (9.07%).

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
Frontier	PriceFrom $29	Free Cancellation	Rating 5.6 2,723 reviews	Search Frontier flights
United Airlines	PriceFrom $131	Free Cancellation	Rating 7.4 10,073 reviews	Search United Airlines flights
Southwest	PriceFrom $134	Free Cancellation	Rating 8.0 4,221 reviews	Search Southwest flights
Delta	PriceFrom $149	Free Cancellation	Rating 7.8 8,499 reviews	Search Delta flights
American Airlines	PriceFrom $154	Free Cancellation	Rating 7.1 11,868 reviews	Search American Airlines 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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Popular cities in Illinois

Flights to New Yorkfrom $76

Flights to Los Angelesfrom $56

Flights to Orlandofrom $51

Flights to Miamifrom $66

Flights to Chicagofrom $67

Flights to San Franciscofrom $46

Flights to Las Vegasfrom $46

Flights to Washington, D.C.from $48

Flights to Bostonfrom $51

Flights to Atlantafrom $51

Flights to Fort Lauderdalefrom $51

Flights to Dallasfrom $61

Cheap flights from Washington, D.C. to Illinois from $64

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 8/30. 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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Frontier flights from Washington, D.C. to Illinois

Our best Frontier deals on Washington, D.C. to Illinois flight tickets

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

Our best American Airlines deals on Washington, D.C. to Illinois flight tickets

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See travel insights to Illinois from

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

What is the cheapest month to fly to Illinois?

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

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

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

How far in advance should I book a flight from Washington, D.C. to Illinois?

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

Can stopping save me money on Washington, D.C. to Illinois flights?

What is the cheapest airline that flies from Washington, D.C. to Illinois?

What airlines fly to Illinois?

How many flights depart from Washington, D.C. to Illinois on average per day?

How many flights depart from Washington, D.C. to Illinois on average per week?

How long is the flight from Washington, D.C. to Illinois?

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

Best Price Found

Fastest flight time

Direct flights

Airports in Illinois

Frequently asked questions about flying 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

Why use momondo?

An easier way to manage your Illinois trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Illinois

Popular cities in Illinois

Popular flights according to clicks in the last 7 days on momondo

Washington, D.C. flight routes

According to popular flight searches on momondo this year

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According to popular flight searches on momondo this year

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