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

Frontier, United Airlines, and Delta 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 day?

As of February 2026, there are 75 flights per day flying from District of Columbia to Illinois. The most common time of day flights depart is 6:00AM, with 42% of flights taking off at noon.

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

As of February 2026, 526 flights take off from District of Columbia and land in Illinois each week. The most common flight departure day for this route is Thu, with 18% of weekly flights taking off on this day.

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 46% of people opting to fly with this airline when traveling to Illinois. Keep in mind that there are 6 different airlines that fly to Illinois on a routine basis, so you have a few additional options to choose from.

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 February 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.

$68 Cheap Flights from District of Columbia to Illinois in 2026

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Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

7:00 am - 6:47 pm

IAD

ORD

12h 47m

1 stop

4:34 pm - 12:36 am

ORD

IAD

7h 02m

1 stop

$179Frontier

Tue, Mar 24 - Wed, Apr 1

10:30 am - 11:51 am

DCA

ORD

2h 21mnonstop

6:00 pm - 9:06 pm

ORD

DCA

2h 06mnonstop

$181United Airlines

Mon, Apr 13 - Sat, Apr 18

7:59 pm - 9:24 pm

DCA

ORD

2h 25mnonstop

9:01 pm - 11:57 pm

ORD

DCA

1h 56mnonstop

$184American Airlines

Tue, Mar 17 - Tue, Apr 7

9:21 am - 2:20 pm

IAD

ORD

5h 59m

1 stop

1:40 pm - 12:36 am

ORD

IAD

9h 56m

1 stop

$185Multiple Airlines

Fri, Apr 24 - Sun, Apr 26

6:00 am - 7:29 am

DCA

ORD

2h 29mnonstop

4:00 pm - 7:05 pm

ORD

DCA

2h 05mnonstop

$188American Airlines

Sat, Apr 11 - Tue, Apr 14

5:27 pm - 11:59 pm

IAD

ORD

7h 32m

1 stop

5:04 pm - 11:03 pm

ORD

IAD

4h 59m

1 stop

$188Delta

Fri, Apr 17 - Mon, Apr 20

6:00 am - 8:47 am

IAD

MDW

3h 47m

1 stop

6:38 pm - 11:03 pm

MDW

IAD

3h 25m

1 stop

$188Delta

Mon, Apr 13 - Fri, Apr 17

7:00 am - 6:47 pm

IAD

ORD

12h 47m

1 stop

12:45 pm - 10:11 am

ORD

IAD

20h 26m

1 stop

$190Multiple Airlines

Tue, Mar 24 - Tue, Mar 31

7:55 am - 9:00 am

DCA

MDW

2h 05mnonstop

8:05 pm - 10:55 pm

MDW

DCA

1h 50mnonstop

$191Southwest

Thu, Apr 9 - Mon, Apr 13

6:40 am - 7:45 am

DCA

MDW

2h 05mnonstop

4:20 pm - 7:10 pm

MDW

DCA

1h 50mnonstop

$194Southwest

Sat, Apr 18 - Wed, Apr 22

Frontier flights from District of Columbia to Illinois

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

Frontier

Mar 24

IAD7:00 amWashington, D.C. Dulles Intl

12h 47m

1 stop

ORD6:47 pmChicago O'Hare Intl

Apr 1

ORD4:34 pmChicago O'Hare Intl

7h 02m

1 stop

IAD12:36 amWashington, D.C. Dulles Intl

$179

Frontier

Apr 30

IAD12:23 pmWashington, D.C. Dulles Intl

10h 07m

1 stop

ORD9:30 pmChicago O'Hare Intl

May 4

ORD4:28 pmChicago O'Hare Intl

7h 08m

1 stop

IAD12:36 amWashington, D.C. Dulles Intl

$181

Frontier

Apr 9

IAD5:34 pmWashington, D.C. Dulles Intl

5h 47m

1 stop

MDW10:21 pmChicago Midway

Apr 16

MDW2:15 pmChicago Midway

9h 21m

1 stop

IAD12:36 amWashington, D.C. Dulles Intl

$182

JetBlue flights from District of Columbia to Illinois

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

JetBlue

Mar 16

DCA1:00 pmWashington, D.C. Reagan-National

5h 24m

1 stop

ORD5:24 pmChicago O'Hare Intl

Mar 24

ORD11:00 amChicago O'Hare Intl

6h 38m

1 stop

DCA6:38 pmWashington, D.C. Reagan-National

$207

JetBlue

Mar 7

DCA6:45 pmWashington, D.C. Reagan-National

14h 25m

1 stop

ORD8:10 amChicago O'Hare Intl

Mar 12

ORD11:00 amChicago O'Hare Intl

5h 18m

1 stop

DCA5:18 pmWashington, D.C. Reagan-National

$338

JetBlue

Mar 7

DCA6:00 amWashington, D.C. Reagan-National

7h 04m

1 stop

ORD12:04 pmChicago O'Hare Intl

Mar 10

ORD10:00 amChicago O'Hare Intl

5h 04m

1 stop

DCA4:04 pmWashington, D.C. Reagan-National

$345

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

Washington, D.C.Chicago

IAD - ORD

IADORD

Washington, D.C. Dulles Intl

Tue 3/24

7:00 am-6:47 pm

1 stop12h 47m

Chicago O'Hare Intl

Wed 4/1

4:34 pm-12:36 am

1 stop7h 02m

$179

Washington, D.C.Chicago

DCA - ORD

DCAORD

Washington, D.C. Reagan-National

Mon 4/13

10:30 am-11:51 am

Nonstop2h 21m

Chicago O'Hare Intl

Sat 4/18

6:00 pm-9:06 pm

Nonstop2h 06m

$181

Washington, D.C.Chicago

DCA - ORD

DCAORD

Washington, D.C. Reagan-National

Tue 3/17

7:59 pm-9:24 pm

Nonstop2h 25m

Chicago O'Hare Intl

Tue 4/7

9:01 pm-11:57 pm

Nonstop1h 56m

$184

Washington, D.C.Chicago

IAD - ORD

IADORD

Washington, D.C. Dulles Intl

Fri 4/24

9:21 am-2:20 pm

1 stop5h 59m

Chicago O'Hare Intl

Sun 4/26

1:40 pm-12:36 am

1 stop9h 56m

$185

Washington, D.C.Chicago

DCA - ORD

DCAORD

Washington, D.C. Reagan-National

Sat 4/11

6:00 am-7:29 am

Nonstop2h 29m

Chicago O'Hare Intl

Tue 4/14

4:00 pm-7:05 pm

Nonstop2h 05m

$188

Washington, D.C.Chicago

IAD - ORD

IADORD

Washington, D.C. Dulles Intl

Fri 4/17

5:27 pm-11:59 pm

1 stop7h 32m

Chicago O'Hare Intl

Mon 4/20

5:04 pm-11:03 pm

1 stop4h 59m

$188

Washington, D.C.Chicago

IAD - MDW

IADMDW

Washington, D.C. Dulles Intl

Mon 4/13

6:00 am-8:47 am

1 stop3h 47m

Chicago Midway

Fri 4/17

6:38 pm-11:03 pm

1 stop3h 25m

$188

Washington, D.C.Chicago

IAD - ORD

IADORD

Washington, D.C. Dulles Intl

Tue 3/24

7:00 am-6:47 pm

1 stop12h 47m

Chicago O'Hare Intl

Tue 3/31

12:45 pm-10:11 am

1 stop20h 26m

$190

Washington, D.C.Chicago

DCA - MDW

DCAMDW

Washington, D.C. Reagan-National

Thu 4/9

7:55 am-9:00 am

Nonstop2h 05m

Chicago Midway

Mon 4/13

8:05 pm-10:55 pm

Nonstop1h 50m

$191

Washington, D.C.Chicago

DCA - MDW

DCAMDW

Washington, D.C. Reagan-National

Sat 4/18

6:40 am-7:45 am

Nonstop2h 05m

Chicago Midway

Wed 4/22

4:20 pm-7:10 pm

Nonstop1h 50m

$194

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 September. Flight prices, which tend to average around $202, 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 $225.

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 $390. Flights from District of Columbia to Illinois on a Monday will generally be more expensive and average around $570. 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 $384. Flights in the morning are often more expensive with an average ticket price of $457.

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

Fly from Baltimore/Washington to Chicago O'Hare Intl 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 $348 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 $199 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.

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	$166
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 $166. The best round-trip flight deal from District of Columbia to Illinois found on momondo in the last 72 hours is $303.

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).

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?
As of February 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 Airbus A319, representing 13.88% of all bookings. The subsequent popular models are Boeing 737-800 at 12.12%, Boeing 737 MAX 8 at 11.73%, and Boeing 737-900 at 8.50%.

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 5.7 3,040 reviews	Search Frontier flights
Spirit Airlines	PriceFrom $41	Free Cancellation	Rating 6.3 8,494 reviews	Search Spirit Airlines flights
United Airlines	PriceFrom $131	Free Cancellation	Rating 7.4 9,347 reviews	Search United Airlines flights
Southwest	PriceFrom $148	Free Cancellation	Rating 8.0 4,299 reviews	Search Southwest flights
American Airlines	PriceFrom $154	Free Cancellation	Rating 7.2 11,352 reviews	Search American Airlines flights
Delta	PriceFrom $194	Free Cancellation	Rating 7.9 8,237 reviews	Search Delta 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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Popular cities in Illinois

Flights to New Yorkfrom $56

Flights to Los Angelesfrom $52

Flights to Miamifrom $36

Flights to Orlandofrom $56

Flights to Chicagofrom $53

Flights to San Franciscofrom $56

Flights to Las Vegasfrom $30

Flights to Washington, D.C.from $56

Flights to Bostonfrom $75

Flights to Atlantafrom $49

Flights to Dallasfrom $54

Flights to Seattlefrom $48

Cheap flights from District of Columbia to Illinois from $68

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 4/4. 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 District of Columbia to Illinois

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Frontier flights from District of Columbia to Illinois

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

JetBlue flights from District of Columbia to Illinois

Our best JetBlue 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 to Illinois?

What cabin class options are available 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

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

Best Price Found

Fastest flight time

Direct flights

Airports in 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

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According to popular flight searches on momondo this year

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