What airlines fly to Illinois?

United Airlines, American Airlines and Southwest 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 45% 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.

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

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

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 Baltimore (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 02m on average. If you fly from Washington, D.C. (another popular airport in Washington, D.C.) to Chicago O'Hare Intl Airport, then the average flight time is 2h 04m.

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

As of July 2025, 642 flights take off from Washington, D.C. and land in Illinois each week. The most common flight departure day for this route is Thu, with 22% of weekly flights taking off on this day.

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

91 flights are operational daily from Washington, D.C. to Illinois as of July 2025. The most popular departure time for this route is 5:00PM, with 44% of flights per day taking off in the afternoon.

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 6 as of July 2025.

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.

$36 Cheap Flights from Washington, D.C. to Illinois in 2025

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

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

9:57 am - 11:10 amBWI-ORD

2h 13mnonstop

6:10 am - 9:02 amORD-BWI

1h 52mnonstop

$68Spirit Airlines

Find Deal

dom., sep. 21 - jue., sep. 25

9:57 am - 11:10 amBWI-ORD

2h 13mnonstop

6:10 am - 9:02 amORD-BWI

1h 52mnonstop

$77Spirit Airlines

Find Deal

jue., sep. 11 - jue., sep. 18

5:40 pm - 6:43 pmBWI-MDW

2h 03mnonstop

1:49 pm - 4:50 pmMDW-BWI

2h 01mnonstop

$80Frontier

Find Deal

vie., oct. 3 - lun., oct. 6

5:40 pm - 6:43 pmBWI-MDW

2h 03mnonstop

1:49 pm - 4:50 pmMDW-BWI

2h 01mnonstop

$89Frontier

Find Deal

dom., sep. 21 - jue., sep. 25

7:55 pm - 8:55 pmBWI-MDW

2h 00mnonstop

12:30 pm - 3:20 pmMDW-BWI

1h 50mnonstop

$161Southwest

Find Deal

sáb., oct. 11 - mié., oct. 15

12:30 pm - 5:22 pmDCA-ORD

5h 52m1 stop

7:15 pm - 10:15 pmORD-DCA

2h 00mnonstop

$209American Airlines

Find Deal

sáb., ago. 23 - sáb., ago. 23

3:59 pm - 5:23 pmDCA-ORD

2h 24mnonstop

5:00 pm - 7:58 pmORD-DCA

1h 58mnonstop

$216American Airlines

Find Deal

sáb., sep. 13 - sáb., sep. 20

3:30 pm - 4:43 pmDCA-ORD

2h 13mnonstop

2:00 pm - 5:01 pmORD-DCA

2h 01mnonstop

$217United Airlines

Find Deal

mié., ago. 27 - mié., sep. 3

8:40 am - 10:02 amIAD-STL

2h 22mnonstop

8:15 am - 11:25 amSTL-IAD

2h 10mnonstop

$217United Airlines

Find Deal

mié., ago. 27 - mié., sep. 3

2:35 pm - 3:45 pmBWI-STL

2h 10mnonstop

6:50 pm - 9:50 pmSTL-BWI

2h 00mnonstop

$217Southwest

Find Deal

mar., ago. 19 - mié., ago. 20

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

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

Spirit Airlines

Sep 21

BWI9:57 amBaltimore/Washington

2h 13m

ORD11:10 amChicago O'Hare Intl

Sep 25

ORD6:10 amChicago O'Hare Intl

1h 52m

BWI9:02 amBaltimore/Washington

$68

Find similar

Spirit Airlines

Sep 11

BWI9:57 amBaltimore/Washington

2h 13m

ORD11:10 amChicago O'Hare Intl

Sep 18

ORD6:10 amChicago O'Hare Intl

1h 52m

BWI9:02 amBaltimore/Washington

$77

Find similar

Spirit Airlines

Sep 21

BWI9:57 amBaltimore/Washington

2h 13m

ORD11:10 amChicago O'Hare Intl

Sep 25

ORD6:10 amChicago O'Hare Intl

1h 52m

BWI9:02 amBaltimore/Washington

$78

Find similar

JetBlue flights from Washington, D.C. to Illinois

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

JetBlue

Aug 26

DCA6:30 amWashington, D.C. Reagan-National

5h 48m

1 stop

ORD11:18 amChicago O'Hare Intl

Sep 6

ORD9:51 amChicago O'Hare Intl

7h 14m

1 stop

DCA6:05 pmWashington, D.C. Reagan-National

$203

Find similar

JetBlue

Sep 1

DCA6:30 amWashington, D.C. Reagan-National

5h 48m

1 stop

ORD11:18 amChicago O'Hare Intl

Sep 10

ORD9:51 amChicago O'Hare Intl

7h 13m

1 stop

DCA6:04 pmWashington, D.C. Reagan-National

$206

Find similar

JetBlue

Nov 8

DCA5:45 pmWashington, D.C. Reagan-National

5h 03m

1 stop

ORD9:48 pmChicago O'Hare Intl

Nov 10

ORD6:45 amChicago O'Hare Intl

6h 47m

1 stop

DCA2:32 pmWashington, D.C. Reagan-National

$207

Find similar

Fly from

Fly to

Route

Depart

Return

Price

BaltimoreChicago

BWI - ORD

BWIORD

Baltimore/Washington

dom. 9/21

9:57 am-11:10 am

Nonstop2h 13m

Chicago O'Hare Intl

jue. 9/25

6:10 am-9:02 am

Nonstop1h 52m

$68

BaltimoreChicago

BWI - ORD

BWIORD

Baltimore/Washington

jue. 9/11

9:57 am-11:10 am

Nonstop2h 13m

Chicago O'Hare Intl

jue. 9/18

6:10 am-9:02 am

Nonstop1h 52m

$77

BaltimoreChicago

BWI - MDW

BWIMDW

Baltimore/Washington

vie. 10/3

5:40 pm-6:43 pm

Nonstop2h 03m

Chicago Midway

lun. 10/6

1:49 pm-4:50 pm

Nonstop2h 01m

$80

BaltimoreChicago

BWI - MDW

BWIMDW

Baltimore/Washington

dom. 9/21

5:40 pm-6:43 pm

Nonstop2h 03m

Chicago Midway

jue. 9/25

1:49 pm-4:50 pm

Nonstop2h 01m

$89

BaltimoreChicago

BWI - MDW

BWIMDW

Baltimore/Washington

sáb. 10/11

7:55 pm-8:55 pm

Nonstop2h 00m

Chicago Midway

mié. 10/15

12:30 pm-3:20 pm

Nonstop1h 50m

$161

Washington, D.C.Chicago

DCA - ORD

DCAORD

Washington, D.C. Reagan-National

sáb. 8/23

12:30 pm-5:22 pm

1 stop5h 52m

Chicago O'Hare Intl

sáb. 8/23

7:15 pm-10:15 pm

Nonstop2h 00m

$209

Washington, D.C.Chicago

DCA - ORD

DCAORD

Washington, D.C. Reagan-National

sáb. 9/13

3:59 pm-5:23 pm

Nonstop2h 24m

Chicago O'Hare Intl

sáb. 9/20

5:00 pm-7:58 pm

Nonstop1h 58m

$216

Washington, D.C.Chicago

DCA - ORD

DCAORD

Washington, D.C. Reagan-National

mié. 8/27

3:30 pm-4:43 pm

Nonstop2h 13m

Chicago O'Hare Intl

mié. 9/3

2:00 pm-5:01 pm

Nonstop2h 01m

$217

Washington, D.C.St. Louis

IAD - STL

IADSTL

Washington, D.C. Dulles Intl

mié. 8/27

8:40 am-10:02 am

Nonstop2h 22m

Lambert-St Louis

mié. 9/3

8:15 am-11:25 am

Nonstop2h 10m

$217

BaltimoreSt. Louis

BWI - STL

BWISTL

Baltimore/Washington

mar. 8/19

2:35 pm-3:45 pm

Nonstop2h 10m

Lambert-St Louis

mié. 8/20

6:50 pm-9:50 pm

Nonstop2h 00m

$217

Flights are sorted by cheapest round-trip flights first.

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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 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 January is also cheap. Prices for this month can be found on momondo for an average of $229.

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 Friday when prices can be found for as low as $308. Flights from Washington, D.C. to Illinois on a Sunday will generally be more expensive and average around $620. 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 afternoon. Flights from Washington, D.C. to Illinois during this time can be as low as $243. Flights in the morning are often more expensive with an average ticket price of $484.

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

Fly from Baltimore/Washington to Chicago Midway for the best Washington, D.C. - 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 Washington, D.C. when booking weeks ahead of your departure date. In general, you can expect to find flights to Illinois for around $284 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 $227 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	$36
Fastest flight time	1h 55m
Direct flights	Every day
Airports in Illinois	2 airports

The best one-way flight to Illinois from Washington, D.C. in the past 72 hours is $36. The best round-trip flight deal from Washington, D.C. to Illinois found on momondo in the last 72 hours is $68.

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 2 airports near Illinois: Chicago O'Hare Intl (ORD), Chicago Midway (MDW)

Search flight deals

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 6 as of July 2025.
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 737-800 (11.02% of total bookings). The next most popular plane models are Airbus A319 (10.96%), Airbus A320-100/200 (10.58%), and Boeing 737 MAX 8 (8.72%).

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
Spirit Airlines	PriceFrom $52	Free Cancellation	Rating 6.3 8,049 reviews	Search Spirit Airlines flights
Frontier	PriceFrom $61	Free Cancellation	Rating 5.9 3,239 reviews	Search Frontier flights
Delta	PriceFrom $98	Free Cancellation	Rating 8.0 7,981 reviews	Search Delta flights
American Airlines	PriceFrom $152	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights
Southwest	PriceFrom $157	Free Cancellation	Rating 8.0 4,246 reviews	Search Southwest flights
United Airlines	PriceFrom $157	Free Cancellation	Rating 7.4 8,900 reviews	Search United 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 $39

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Flights to Chicagofrom $59

Flights to Orlandofrom $54

Flights to Las Vegasfrom $35

Flights to San Franciscofrom $49

Flights to Washington, D.C.from $49

Flights to Bostonfrom $77

Flights to Atlantafrom $29

Flights to Dallasfrom $55

Flights to Seattlefrom $93

Cheap flights from Washington, D.C. to Illinois from $36

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 10/31. 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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Big names and deals

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

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

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

JetBlue flights from Washington, D.C. to Illinois

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

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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

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?

Our most recent data shows that the best time of day to fly to Illinois is in the afternoon. Flights from Washington, D.C. to Illinois during this time can be as low as $243. Flights in the morning are often more expensive with an average ticket price of $484.

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

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

How far in advance should I book a flight to Illinois?

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.

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

Frontier, Spirit Airlines, and American Airlines are the most popular carriers operating 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?

91 flights are operational daily from Washington, D.C. to Illinois as of July 2025. The most popular departure time for this route is 5:00PM, with 44% of flights per day taking off in the afternoon.

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

As of July 2025, 642 flights take off from Washington, D.C. and land in Illinois each week. The most common flight departure day for this route is Thu, with 22% of weekly flights taking off on this day.

How long is the flight from 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

Fastest flight time

Direct flights

Airports in Illinois

When did momondo last update prices for flights from Washington, D.C. to Illinois?

How many operators does momondo search for flights from Washington, D.C. to Illinois?

How old do you have to be to fly from Washington, D.C. to Illinois?

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

What is the most popular plane model 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?

Why should I use momondo to find a flight deal from Washington, D.C. to Illinois?

Can I find flights from Washington, D.C. to Illinois with flexible booking policies on momondo?

How can momondo help me find flights from Washington, D.C. to Illinois?

I’m not ready to book a flight from Washington, D.C. to Illinois right now. Can momondo alert me if prices change?

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