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

United Airlines, Southwest, and Delta are the most popular carriers operating from Washington, D.C. Reagan-National to Illinois

What airlines fly to Illinois?

American Airlines, United Airlines and Southwest are the top three most popular airlines that fly to Illinois from Washington, D.C. Reagan-National Airport according to our data. American Airlines is the first choice among our users, with 43% of people opting to fly with this airline when traveling to Illinois. Keep in mind that there are 4 different airlines that fly to Illinois on a routine basis, so you have a few additional options to choose from.

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

As of April 2026, there are 4 operators available to choose from for flights from Washington, D.C. Reagan-National Airport to Illinois.

How old do you have to be to fly from Washington, D.C. Reagan-National Airport 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 Washington, D.C. Reagan-National Airport 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.

$76 Cheap Flights from Washington, D.C. Reagan-National Airport to Illinois in 2026

Q: How many flights depart from Washington, D.C. Reagan-National Airport to Illinois on average per week?

352 flights are operational weekly from Washington, D.C. Reagan-National Airport to Illinois as of April 2026. The most popular departure day for this route is Thu, with 19% of flights per week taking off on this day.

Q: How many flights depart from Washington, D.C. Reagan-National Airport to Illinois on average per day?

As of April 2026, 50 flights take off from Washington, D.C. Reagan-National Airport and land in Illinois each day. The most common flight departure time for this route is 11:00AM, with 47% of daily flights taking off at noon.

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Find the cheapest flights from Washington, D.C. Reagan-National Airport to Illinois

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

7:30 am - 8:47 am

DCA

ORD

2h 17mnonstop

7:40 pm - 10:49 pm

ORD

DCA

2h 09mnonstop

$219United Airlines

Wed, Jun 3 - Mon, Jun 8

2:45 pm - 5:50 pm

DCA

MDW

4h 05m

1 stop

1:55 pm - 6:40 pm

MDW

DCA

3h 45m

1 stop

$219Southwest

Mon, May 4 - Tue, May 5

7:00 am - 8:32 pm

DCA

ORD

14h 32m

1 stop

9:37 pm - 9:58 pm

ORD

DCA

23h 21m

1 stop

$220Frontier

Tue, May 12 - Thu, May 14

6:00 pm - 8:32 pm

DCA

ORD

27h 32m

1 stop

9:37 pm - 9:58 pm

ORD

DCA

23h 21m

1 stop

$221Frontier

Tue, May 12 - Thu, May 28

3:40 pm - 4:50 pm

DCA

MDW

2h 10mnonstop

9:15 am - 8:55 pm

MDW

DCA

10h 40m

2 stops

$223Southwest

Wed, May 6 - Sat, May 9

6:00 pm - 10:28 pm

DCA

MDW

5h 28m

1 stop

1:24 pm - 6:59 pm

MDW

DCA

4h 35m

1 stop

$226Delta

Wed, Apr 29 - Wed, May 6

6:05 am - 8:43 am

DCA

MDW

3h 38m

1 stop

6:36 pm - 10:59 pm

MDW

DCA

3h 23m

1 stop

$227Delta

Thu, May 7 - Wed, May 20

5:00 pm - 6:22 pm

DCA

ORD

2h 22mnonstop

4:00 pm - 7:10 pm

ORD

DCA

2h 10mnonstop

$227United Airlines

Sat, May 23 - Tue, May 26

8:40 am - 10:12 am

DCA

STL

2h 32mnonstop

5:00 pm - 8:15 pm

STL

DCA

2h 15mnonstop

$268American Airlines

Thu, May 21 - Tue, May 26

8:40 am - 10:12 am

DCA

STL

2h 32mnonstop

5:08 am - 8:28 am

STL

DCA

2h 20mnonstop

$272American Airlines

Thu, May 21 - Tue, May 26

JetBlue flights from Washington, D.C. Reagan-National Airport to Illinois

Our best JetBlue deals on Washington, D.C. Reagan-National Airport to Illinois flight tickets

JetBlue

May 6

DCA3:35 pmWashington, D.C. Reagan-National

6h 18m

1 stop

ORD8:53 pmChicago O'Hare Intl

May 12

ORD9:49 amChicago O'Hare Intl

6h 57m

1 stop

DCA5:46 pmWashington, D.C. Reagan-National

$251

JetBlue

Apr 25

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

26h 41m

1 stop

ORD7:41 amChicago O'Hare Intl

Apr 29

ORD9:41 amChicago O'Hare Intl

24h 29m

1 stop

DCA11:10 amWashington, D.C. Reagan-National

$389

JetBlue

Apr 26

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

26h 41m

1 stop

ORD7:41 amChicago O'Hare Intl

Apr 30

ORD6:00 amChicago O'Hare Intl

24h 59m

1 stop

DCA7:59 amWashington, D.C. Reagan-National

$398

United Airlines flights from Washington, D.C. Reagan-National Airport to Illinois

Our best United Airlines deals on Washington, D.C. Reagan-National Airport to Illinois flight tickets

United Airlines

May 23

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

2h 22m

ORD6:22 pmChicago O'Hare Intl

May 26

ORD4:00 pmChicago O'Hare Intl

2h 10m

DCA7:10 pmWashington, D.C. Reagan-National

$227

United Airlines

May 27

DCA2:00 pmWashington, D.C. Reagan-National

2h 18m

ORD3:18 pmChicago O'Hare Intl

May 29

ORD7:00 amChicago O'Hare Intl

1h 59m

DCA9:59 amWashington, D.C. Reagan-National

$233

United Airlines

May 23

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

2h 22m

ORD6:22 pmChicago O'Hare Intl

Jun 1

ORD6:00 amChicago O'Hare Intl

1h 54m

DCA8:54 amWashington, D.C. Reagan-National

$239

momondo Fare Finder

Use the filters below to find and compare flights from Washington, D.C. Reagan-National Airport to Illinois that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Quickest round-trip

Washington, D.C.Chicago

DCA - ORD

DCAORD

Washington, D.C. Reagan-National

Wed 6/3

7:30 am-8:47 am

Nonstop2h 17m

Chicago O'Hare Intl

Mon 6/8

7:40 pm-10:49 pm

Nonstop2h 09m

$219

Washington, D.C.Chicago

DCA - MDW

DCAMDW

Washington, D.C. Reagan-National

Mon 5/4

2:45 pm-5:50 pm

1 stop4h 05m

Chicago Midway

Tue 5/5

1:55 pm-6:40 pm

1 stop3h 45m

$219

Washington, D.C.Chicago

DCA - ORD

DCAORD

Washington, D.C. Reagan-National

Tue 5/12

7:00 am-8:32 pm

1 stop14h 32m

Chicago O'Hare Intl

Thu 5/14

9:37 pm-9:58 pm

1 stop23h 21m

$220

Washington, D.C.Chicago

DCA - ORD

DCAORD

Washington, D.C. Reagan-National

Tue 5/12

6:00 pm-8:32 pm

1 stop27h 32m

Chicago O'Hare Intl

Thu 5/28

9:37 pm-9:58 pm

1 stop23h 21m

$221

Washington, D.C.Chicago

DCA - MDW

DCAMDW

Washington, D.C. Reagan-National

Wed 5/6

3:40 pm-4:50 pm

Nonstop2h 10m

Chicago Midway

Sat 5/9

9:15 am-8:55 pm

2 stops10h 40m

$223

Washington, D.C.Chicago

DCA - MDW

DCAMDW

Washington, D.C. Reagan-National

Wed 4/29

6:00 pm-10:28 pm

1 stop5h 28m

Chicago Midway

Wed 5/6

1:24 pm-6:59 pm

1 stop4h 35m

$226

Washington, D.C.Chicago

DCA - MDW

DCAMDW

Washington, D.C. Reagan-National

Thu 5/7

6:05 am-8:43 am

1 stop3h 38m

Chicago Midway

Wed 5/20

6:36 pm-10:59 pm

1 stop3h 23m

$227

Washington, D.C.Chicago

DCA - ORD

DCAORD

Washington, D.C. Reagan-National

Sat 5/23

5:00 pm-6:22 pm

Nonstop2h 22m

Chicago O'Hare Intl

Tue 5/26

4:00 pm-7:10 pm

Nonstop2h 10m

$227

Washington, D.C.St. Louis

DCA - STL

DCASTL

Washington, D.C. Reagan-National

Thu 5/21

8:40 am-10:12 am

Nonstop2h 32m

Lambert-St Louis

Tue 5/26

5:00 pm-8:15 pm

Nonstop2h 15m

$268

Washington, D.C.St. Louis

DCA - STL

DCASTL

Washington, D.C. Reagan-National

Thu 5/21

8:40 am-10:12 am

Nonstop2h 32m

Lambert-St Louis

Tue 5/26

5:08 am-8:28 am

Nonstop2h 20m

$272

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. Reagan-National Airport 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. Reagan-National Airport is in September. Flight prices, which tend to average around $279, 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 $282.

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

The cheapest day to depart from Washington, D.C. Reagan-National Airport to Illinois is on a Friday when prices can be found for as low as $383. Flights from Washington, D.C. Reagan-National Airport to Illinois on a Sunday will generally be more expensive and average around $503. 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. Reagan-National Airport to Illinois during this time can be as low as $370. Flights at noon are often more expensive with an average ticket price of $415.

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

Fly from Washington, D.C. Reagan-National to Chicago Midway for the best Washington, D.C. Reagan-National - 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. Reagan-National Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Illinois for around $330 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. Reagan-National Airport for as low as $230 on momondo.

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

There are 4 cabin classes available to choose from on Washington, D.C. Reagan-National 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. Reagan-National Airport to Illinois flights?

No. A direct flight is the cheapest option for a flight between Washington, D.C. Reagan-National Airport to Illinois.

Cheap Washington, D.C. Reagan-National Airport to Illinois flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Washington, D.C. Reagan-National Airport to Illinois

Best Price Found	$189
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. Reagan-National Airport in the past 72 hours is $189. The best round-trip flight deal from Washington, D.C. Reagan-National Airport to Illinois found on momondo in the last 72 hours is $301.

The fastest flight from Washington, D.C. Reagan-National Airport to Illinois takes 1h 55m

Direct flights go from Washington, D.C. Reagan-National Airport to Illinois every day.

There are 98 airports in Illinois. From Washington, D.C. Reagan-National Airport there are direct flights to Chicago O'Hare Intl (ORD), Chicago Midway (MDW).

Search flight deals

Frequently asked questions about flying from Washington, D.C. Reagan-National Airport to Illinois

When did momondo last update prices for flights from Washington, D.C. Reagan-National Airport to Illinois?
Prices for flights from Washington, D.C. Reagan-National Airport to Illinois refresh daily.
How many operators does momondo search for flights from Washington, D.C. Reagan-National Airport to Illinois?
As of April 2026, there are 4 operators available to choose from for flights from Washington, D.C. Reagan-National Airport to Illinois.
How old do you have to be to fly from Washington, D.C. Reagan-National Airport 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 Washington, D.C. Reagan-National Airport 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 Washington, D.C. Reagan-National Airport to Illinois?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from Washington, D.C. Reagan-National Airport to Illinois is Airbus A319 (15.44% of total bookings). The next most popular plane models are Boeing 737 MAX 8 (14.50%), Boeing 737-800 (13.88%), and Boeing 737-900 (6.80%).

Best airlines flying from Washington, D.C. Reagan-National Airport to Illinois

Compare and see reviews for airlines that fly from Washington, D.C. Reagan-National Airport to Illinois with momondo

Airline	Rating	Free Cancellation	Price
Frontier	PriceFrom $29	Free Cancellation	Rating 5.7 2,987 reviews	Search Frontier flights
American Airlines	PriceFrom $154	Free Cancellation	Rating 7.1 11,590 reviews	Search American Airlines flights
United Airlines	PriceFrom $189	Free Cancellation	Rating 7.4 9,600 reviews	Search United Airlines flights
Southwest	PriceFrom $191	Free Cancellation	Rating 8.0 4,329 reviews	Search Southwest flights

Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Illinois from Washington, D.C..

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

Flights from Washington, D.C. to Illinois with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight 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?

Yes momondo offers price alerts on flights to Illinois from Washington, D.C.. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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Popular cities in Illinois

Flights to New Yorkfrom $56

Flights to Los Angelesfrom $49

Flights to Orlandofrom $51

Flights to Miamifrom $56

Flights to Chicagofrom $64

Flights to San Franciscofrom $59

Flights to Las Vegasfrom $46

Flights to Washington, D.C.from $56

Flights to Bostonfrom $70

Flights to Atlantafrom $56

Flights to Dallasfrom $56

Flights to Fort Lauderdalefrom $53

Cheap flights from Washington, D.C. Reagan-National Airport to Illinois from $76

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JetBlue flights from Washington, D.C. Reagan-National Airport to Illinois

Our best JetBlue deals on Washington, D.C. Reagan-National Airport to Illinois flight tickets

United Airlines flights from Washington, D.C. Reagan-National Airport to Illinois

Our best United Airlines deals on Washington, D.C. Reagan-National Airport to Illinois flight tickets

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Use the filters below to find and compare flights from Washington, D.C. Reagan-National Airport to Illinois that are best for you.

See travel insights to Illinois from

How to get the cheapest flight ticket from Washington, D.C. Reagan-National Airport 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. Reagan-National to Illinois flight route?

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

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

Can stopping save me money on Washington, D.C. Reagan-National Airport to Illinois flights?

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

What airlines fly to Illinois?

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

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

Cheap Washington, D.C. Reagan-National Airport to Illinois flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Washington, D.C. Reagan-National Airport to Illinois

Best Price Found

Fastest flight time

Direct flights

Airports in Illinois

Frequently asked questions about flying from Washington, D.C. Reagan-National Airport to Illinois

Best airlines flying from Washington, D.C. Reagan-National Airport to Illinois

Compare and see reviews for airlines that fly from Washington, D.C. Reagan-National Airport 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

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