What airlines fly to Illinois?

United Airlines, American Airlines and Frontier are the top three most popular airlines that fly to Illinois from District of Columbia according to our data. United Airlines is the first choice among our users, with 54% 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.

How many flights depart from District of Columbia to Illinois on average per day?

As of July 2026, there are 99 flights per day flying from District of Columbia to Illinois. The most common time of day flights depart is 5:00PM, with 47% of flights taking off at noon.

What is the cheapest airline that flies from District of Columbia to Illinois?

Delta, JetBlue, and United Airlines are the most popular carriers operating from District of Columbia to Illinois

How many flights depart from District of Columbia to Illinois on average per week?

As of July 2026, 696 flights take off from District of Columbia and land in Illinois each week. The most common flight departure day for this route is Tue, with 17% of weekly flights taking off on this day.

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?

As of July 2026, there are 5 operators available to choose from 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.

$99 Cheap Flights from District of Columbia to Illinois in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from District of Columbia to Illinois

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

7:48 am - 7:53 pm

IAD

ORD

13h 05m

1 stop

1:50 pm - 10:52 pm

ORD

IAD

8h 02m

1 stop

$219Frontier

Tue, Aug 11 - Wed, Aug 12

6:20 am - 10:55 am

IAD

MDW

5h 35m

1 stop

11:50 am - 10:52 pm

MDW

IAD

10h 02m

1 stop

$220Frontier

Wed, Aug 19 - Fri, Aug 21

5:00 am - 9:00 am

DCA

ORD

5h 00m

1 stop

8:58 pm - 11:59 pm

ORD

DCA

2h 01mnonstop

$221American Airlines

Thu, Aug 13 - Mon, Aug 17

4:35 pm - 8:10 pm

DCA

MDW

4h 35m

1 stop

5:45 am - 8:30 am

MDW

DCA

1h 45mnonstop

$221Southwest

Fri, Sep 11 - Mon, Sep 14

10:18 pm - 11:31 pm

IAD

ORD

2h 13mnonstop

9:52 pm - 12:58 am

ORD

IAD

2h 06mnonstop

$223United Airlines

Sat, Oct 10 - Mon, Oct 12

1:00 pm - 5:50 pm

DCA

MDW

5h 50m

2 stops

5:45 am - 8:30 am

MDW

DCA

1h 45mnonstop

$226Southwest

Fri, Sep 11 - Mon, Sep 14

5:05 pm - 9:37 pm

DCA

ORD

5h 32m

1 stop

5:10 pm - 11:02 pm

ORD

DCA

4h 52m

1 stop

$231Delta

Fri, Sep 11 - Mon, Sep 14

6:09 pm - 11:59 pm

IAD

ORD

6h 50m

1 stop

11:17 am - 4:30 pm

ORD

IAD

4h 13m

1 stop

$231Delta

Fri, Sep 11 - Tue, Sep 15

10:18 am - 11:38 am

DCA

ORD

2h 20mnonstop

1:25 pm - 4:29 pm

ORD

DCA

2h 04mnonstop

$237American Airlines

Thu, Sep 3 - Tue, Sep 8

8:20 am - 12:02 pm

IAD

STL

4h 42m

1 stop

8:00 am - 1:55 pm

STL

IAD

4h 55m

1 stop

$257United Airlines

Wed, Aug 12 - Thu, Aug 13

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Delta flights from District of Columbia to Illinois

Our best Delta deals on District of Columbia to Illinois flight tickets

Delta

Sep 11

DCA5:05 pmWashington, D.C. Reagan-National

5h 32m

1 stop

ORD9:37 pmChicago O'Hare Intl

Sep 14

ORD5:10 pmChicago O'Hare Intl

4h 52m

1 stop

DCA11:02 pmWashington, D.C. Reagan-National

$231

Delta

Aug 20

IAD6:10 amWashington, D.C. Dulles Intl

4h 07m

1 stop

MDW9:17 amChicago Midway

Aug 24

MDW6:42 pmChicago Midway

3h 44m

1 stop

IAD11:26 pmWashington, D.C. Dulles Intl

$238

Delta

Sep 5

IAD2:54 pmWashington, D.C. Dulles Intl

5h 05m

1 stop

ORD6:59 pmChicago O'Hare Intl

Sep 9

ORD5:30 amChicago O'Hare Intl

7h 41m

1 stop

IAD2:11 pmWashington, D.C. Dulles Intl

$241

American Airlines flights from District of Columbia to Illinois

Our best American Airlines deals on District of Columbia to Illinois flight tickets

American Airlines

Aug 13

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

5h 00m

1 stop

ORD9:00 amChicago O'Hare Intl

Aug 17

ORD8:58 pmChicago O'Hare Intl

2h 01m

DCA11:59 pmWashington, D.C. Reagan-National

$221

American Airlines

Sep 3

DCA10:18 amWashington, D.C. Reagan-National

2h 20m

ORD11:38 amChicago O'Hare Intl

Sep 8

ORD1:25 pmChicago O'Hare Intl

2h 04m

DCA4:29 pmWashington, D.C. Reagan-National

$237

American Airlines

Aug 19

DCA5:23 pmWashington, D.C. Reagan-National

2h 31m

ORD6:54 pmChicago O'Hare Intl

Aug 24

ORD8:58 pmChicago O'Hare Intl

2h 01m

DCA11:59 pmWashington, D.C. Reagan-National

$244

momondo Fare Finder

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

Cheapest round-trip

Washington, D.C.Chicago

IAD - ORD

IADORD

Washington, D.C. Dulles Intl

Tue 8/11

7:48 am-7:53 pm

1 stop13h 05m

Chicago O'Hare Intl

Wed 8/12

1:50 pm-10:52 pm

1 stop8h 02m

$219

Washington, D.C.Chicago

IAD - MDW

IADMDW

Washington, D.C. Dulles Intl

Wed 8/19

6:20 am-10:55 am

1 stop5h 35m

Chicago Midway

Fri 8/21

11:50 am-10:52 pm

1 stop10h 02m

$220

Washington, D.C.Chicago

DCA - ORD

DCAORD

Washington, D.C. Reagan-National

Thu 8/13

5:00 am-9:00 am

1 stop5h 00m

Chicago O'Hare Intl

Mon 8/17

8:58 pm-11:59 pm

Nonstop2h 01m

$221

Washington, D.C.Chicago

DCA - MDW

DCAMDW

Washington, D.C. Reagan-National

Fri 9/11

4:35 pm-8:10 pm

1 stop4h 35m

Chicago Midway

Mon 9/14

5:45 am-8:30 am

Nonstop1h 45m

$221

Quickest round-trip

Washington, D.C.Chicago

IAD - ORD

IADORD

Washington, D.C. Dulles Intl

Sat 10/10

10:18 pm-11:31 pm

Nonstop2h 13m

Chicago O'Hare Intl

Mon 10/12

9:52 pm-12:58 am

Nonstop2h 06m

$223

Washington, D.C.Chicago

DCA - MDW

DCAMDW

Washington, D.C. Reagan-National

Fri 9/11

1:00 pm-5:50 pm

2 stops5h 50m

Chicago Midway

Mon 9/14

5:45 am-8:30 am

Nonstop1h 45m

$226

Washington, D.C.Chicago

DCA - ORD

DCAORD

Washington, D.C. Reagan-National

Fri 9/11

5:05 pm-9:37 pm

1 stop5h 32m

Chicago O'Hare Intl

Mon 9/14

5:10 pm-11:02 pm

1 stop4h 52m

$231

Washington, D.C.Chicago

IAD - ORD

IADORD

Washington, D.C. Dulles Intl

Fri 9/11

6:09 pm-11:59 pm

1 stop6h 50m

Chicago O'Hare Intl

Tue 9/15

11:17 am-4:30 pm

1 stop4h 13m

$231

Washington, D.C.Chicago

DCA - ORD

DCAORD

Washington, D.C. Reagan-National

Thu 9/3

10:18 am-11:38 am

Nonstop2h 20m

Chicago O'Hare Intl

Tue 9/8

1:25 pm-4:29 pm

Nonstop2h 04m

$237

Washington, D.C.St. Louis

IAD - STL

IADSTL

Washington, D.C. Dulles Intl

Wed 8/12

8:20 am-12:02 pm

1 stop4h 42m

Lambert-St Louis

Thu 8/13

8:00 am-1:55 pm

1 stop4h 55m

$257

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 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

Prices

Airlines

Other information

What is the cheapest month to fly to Illinois?

The cheapest month to fly to Illinois from District of Columbia is in October. Flight prices, which tend to average around $271, 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 $272.

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 Thursday when prices can be found for as low as $423. Flights from District of Columbia to Illinois on a Monday will generally be more expensive and average around $586. 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 $427. Flights in the afternoon are often more expensive with an average ticket price of $497.

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 from District of Columbia 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 $396 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 $230 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	$186
Fastest flight time	1h 55m
Direct flights	Every day
Airports in Illinois	98 airports

The best one-way flight to Illinois from District of Columbia in the past 72 hours is $186. The best round-trip flight deal from District of Columbia to Illinois found on momondo in the last 72 hours is $286.

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 98 airports in Illinois. From District of Columbia there are direct flights to Chicago O'Hare Intl (ORD), Chicago Midway (MDW), Lambert-St Louis (STL).

Search flight deals

Frequently asked questions about flying from District of Columbia to Illinois

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?
As of July 2026, there are 5 operators available to choose from 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?
momondo data reveals that the most frequently booked plane model on the route from District of Columbia to Illinois is Boeing 737 MAX 8, representing 14.54% of all bookings. The subsequent popular models are Boeing 737-800 at 13.45%, Airbus A320-100/200 at 10.57%, and Airbus A319 at 9.73%.

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
Frontier	PriceFrom $29	Free Cancellation	Rating 5.6 2,771 reviews	Search Frontier flights
United Airlines	PriceFrom $131	Free Cancellation	Rating 7.4 10,020 reviews	Search United Airlines flights
Southwest	PriceFrom $134	Free Cancellation	Rating 8.0 4,241 reviews	Search Southwest flights
Delta	PriceFrom $149	Free Cancellation	Rating 7.8 8,476 reviews	Search Delta flights
American Airlines	PriceFrom $154	Free Cancellation	Rating 7.1 11,834 reviews	Search American 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.

An easier way to manage your Illinois trip

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Complete your trip

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Popular cities in Illinois

Flights to New Yorkfrom $73

Flights to Los Angelesfrom $38

Flights to Orlandofrom $57

Flights to Miamifrom $64

Flights to Chicagofrom $76

Flights to San Franciscofrom $51

Flights to Las Vegasfrom $38

Flights to Washington, D.C.from $50

Flights to Bostonfrom $110

Flights to Atlantafrom $56

Flights to Fort Lauderdalefrom $58

Flights to Dallasfrom $77

Cheap flights from District of Columbia to Illinois from $99

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 9/6. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Find the cheapest flights from District of Columbia to Illinois

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Big names and deals

Filter for what you want

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Delta flights from District of Columbia to Illinois

Our best Delta deals on District of Columbia to Illinois flight tickets

American Airlines flights from District of Columbia to Illinois

Our best American Airlines deals on District of Columbia to Illinois flight tickets

momondo Fare Finder

Use the filters below to find and compare flights from District of Columbia to Illinois that are best for you.

See travel insights to Illinois from

How to get the cheapest flight ticket from District of Columbia 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 District of Columbia to Illinois flight route?

How far in advance should I book a flight from District of Columbia to Illinois?

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

Can stopping save me money on District of Columbia to Illinois flights?

What is the cheapest airline that flies from District of Columbia to Illinois?

What airlines fly to Illinois?

How many flights depart from District of Columbia to Illinois on average per day?

How many flights depart from District of Columbia to Illinois on average per week?

Cheap District of Columbia to Illinois flight deals and tips

Best Price Found

Fastest flight time

Direct flights

Airports in Illinois

Frequently asked questions about flying 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

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

District of Columbia flight routes

According to popular flight searches on momondo this year

Illinois flight routes

According to popular flight searches on momondo this year

Fly your favorite airline to Illinois

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

Complete your trip to Illinois

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According to popular flight searches on momondo this year