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

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

What airlines fly to Washington, D.C. Reagan-National Airport?

American Airlines, United Airlines and Southwest are the top three most popular airlines that fly to Washington, D.C. Reagan-National Airport from Illinois according to our data. American Airlines is the first choice among our users, with 47% of people opting to fly with this airline when traveling to Washington, D.C. Reagan-National Airport. Keep in mind that there are 6 different airlines that fly to Washington, D.C. Reagan-National Airport on a routine basis, so you have a few additional options to choose from.

How long does it take to fly to Washington, D.C. Reagan-National Airport?

Flight times from Illinois to Washington, D.C. Reagan-National Airport vary, but if you’re flying out of Chicago and flying into Washington, D.C. Dulles Intl Airport (one of the most popular routes), then the duration is 2h 34m on average. Another popular route from Illinois to Washington, D.C. Reagan-National Airport is flying from Peoria to Washington, D.C. Dulles Intl Airport, which will take roughly 3h 44m. Keep in mind that layovers or delays could extend your travel time.

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

Prices for flights from Illinois to Washington, D.C. Reagan-National Airport are refreshed on a daily basis.

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

As of March 2026, there are 6 operators available to choose from for flights from Illinois to Washington, D.C. Reagan-National Airport.

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

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 Illinois to Washington, D.C. Reagan-National Airport.

What documentation or ID do you need to fly to Washington, D.C. Reagan-National Airport?

The required travel and health documents for your Washington, D.C. Reagan-National Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Washington, D.C. Reagan-National Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$85 Cheap Flights from Illinois to Washington, D.C. Reagan-National Airport in 2026

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

As of March 2026, there are 340 flights per week flying from Illinois to Washington, D.C. Reagan-National Airport. The most common day of the week flights depart is Fri, with 19% of flights taking off on this day.

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One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

2:29 pm - 9:59 pm

ORD

DCA

30h 30m

1 stop

1:59 pm - 9:50 am

DCA

ORD

20h 51m

1 stop

$171Frontier

Mon, Apr 13 - Thu, Apr 16

2:29 pm - 12:02 pm

ORD

DCA

20h 33m

1 stop

6:00 pm - 9:45 am

DCA

ORD

16h 45m

1 stop

$172Frontier

Fri, Apr 10 - Sat, Apr 18

12:42 pm - 3:45 pm

ORD

DCA

2h 03mnonstop

1:45 pm - 3:09 pm

DCA

ORD

2h 24mnonstop

$179American Airlines

Thu, Apr 30 - Tue, May 5

5:40 pm - 10:51 pm

ORD

DCA

4h 11m

1 stop

1:40 pm - 6:35 pm

DCA

ORD

5h 55m

1 stop

$181Delta

Sat, Apr 11 - Wed, Apr 15

1:10 pm - 5:47 pm

MDW

DCA

3h 37m

1 stop

12:29 pm - 4:26 pm

DCA

MDW

4h 57m

1 stop

$181Delta

Sat, Apr 11 - Sat, Apr 18

9:01 pm - 11:57 pm

ORD

DCA

1h 56mnonstop

5:55 am - 7:24 am

DCA

ORD

2h 29mnonstop

$184American Airlines

Mon, May 4 - Thu, May 7

10:00 am - 1:10 pm

ORD

DCA

2h 10mnonstop

7:30 am - 8:47 am

DCA

ORD

2h 17mnonstop

$186United Airlines

Tue, Apr 7 - Fri, Apr 10

8:30 pm - 11:15 pm

MDW

DCA

1h 45mnonstop

9:15 pm - 10:20 pm

DCA

MDW

2h 05mnonstop

$197Southwest

Wed, Mar 25 - Wed, Apr 1

7:25 pm - 10:15 pm

MDW

DCA

1h 50mnonstop

7:00 pm - 8:05 pm

DCA

MDW

2h 05mnonstop

$198Southwest

Tue, Apr 7 - Wed, Apr 8

9:49 am - 5:12 pm

CMI

DCA

6h 23m

1 stop

1:00 pm - 5:49 pm

DCA

CMI

5h 49m

1 stop

$258United Airlines

Sun, May 24 - Tue, Jun 2

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

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

Delta

Apr 11

ORD5:40 pmChicago O'Hare Intl

4h 11m

1 stop

DCA10:51 pmWashington, D.C. Reagan-National

Apr 15

DCA1:40 pmWashington, D.C. Reagan-National

5h 55m

1 stop

ORD6:35 pmChicago O'Hare Intl

$181

Delta

Apr 24

MDW9:27 amChicago Midway

6h 09m

1 stop

DCA4:36 pmWashington, D.C. Reagan-National

Apr 25

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

3h 47m

1 stop

MDW8:47 amChicago Midway

$188

Delta

Apr 1

ORD7:10 amChicago O'Hare Intl

4h 43m

1 stop

DCA12:53 pmWashington, D.C. Reagan-National

Apr 8

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

4h 10m

1 stop

ORD9:10 amChicago O'Hare Intl

$199

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

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

Southwest

Apr 1

MDW11:30 amChicago Midway

1h 45m

DCA2:15 pmWashington, D.C. Reagan-National

Apr 1

DCA9:15 pmWashington, D.C. Reagan-National

2h 05m

MDW10:20 pmChicago Midway

$197

Southwest

Apr 7

MDW7:25 pmChicago Midway

1h 50m

DCA10:15 pmWashington, D.C. Reagan-National

Apr 8

DCA7:00 pmWashington, D.C. Reagan-National

2h 05m

MDW8:05 pmChicago Midway

$198

Southwest

Apr 25

MDW6:35 pmChicago Midway

1h 55m

DCA9:30 pmWashington, D.C. Reagan-National

Apr 28

DCA9:35 pmWashington, D.C. Reagan-National

2h 00m

MDW10:35 pmChicago Midway

$207

momondo Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

ChicagoWashington, D.C.

ORD - DCA

ORDDCA

Chicago O'Hare Intl

Mon 4/13

2:29 pm-9:59 pm

1 stop30h 30m

Washington, D.C. Reagan-National

Thu 4/16

1:59 pm-9:50 am

1 stop20h 51m

$171

ChicagoWashington, D.C.

ORD - DCA

ORDDCA

Chicago O'Hare Intl

Fri 4/10

2:29 pm-12:02 pm

1 stop20h 33m

Washington, D.C. Reagan-National

Sat 4/18

6:00 pm-9:45 am

1 stop16h 45m

$172

ChicagoWashington, D.C.

ORD - DCA

ORDDCA

Chicago O'Hare Intl

Thu 4/30

12:42 pm-3:45 pm

Nonstop2h 03m

Washington, D.C. Reagan-National

Tue 5/5

1:45 pm-3:09 pm

Nonstop2h 24m

$179

ChicagoWashington, D.C.

ORD - DCA

ORDDCA

Chicago O'Hare Intl

Sat 4/11

5:40 pm-10:51 pm

1 stop4h 11m

Washington, D.C. Reagan-National

Wed 4/15

1:40 pm-6:35 pm

1 stop5h 55m

$181

ChicagoWashington, D.C.

MDW - DCA

MDWDCA

Chicago Midway

Sat 4/11

1:10 pm-5:47 pm

1 stop3h 37m

Washington, D.C. Reagan-National

Sat 4/18

12:29 pm-4:26 pm

1 stop4h 57m

$181

ChicagoWashington, D.C.

ORD - DCA

ORDDCA

Chicago O'Hare Intl

Mon 5/4

9:01 pm-11:57 pm

Nonstop1h 56m

Washington, D.C. Reagan-National

Thu 5/7

5:55 am-7:24 am

Nonstop2h 29m

$184

ChicagoWashington, D.C.

ORD - DCA

ORDDCA

Chicago O'Hare Intl

Tue 4/7

10:00 am-1:10 pm

Nonstop2h 10m

Washington, D.C. Reagan-National

Fri 4/10

7:30 am-8:47 am

Nonstop2h 17m

$186

ChicagoWashington, D.C.

MDW - DCA

MDWDCA

Chicago Midway

Wed 3/25

8:30 pm-11:15 pm

Nonstop1h 45m

Washington, D.C. Reagan-National

Wed 4/1

9:15 pm-10:20 pm

Nonstop2h 05m

$197

ChicagoWashington, D.C.

MDW - DCA

MDWDCA

Chicago Midway

Tue 4/7

7:25 pm-10:15 pm

Nonstop1h 50m

Washington, D.C. Reagan-National

Wed 4/8

7:00 pm-8:05 pm

Nonstop2h 05m

$198

ChampaignWashington, D.C.

CMI - DCA

CMIDCA

Champaign University-Willard

Sun 5/24

9:49 am-5:12 pm

1 stop6h 23m

Washington, D.C. Reagan-National

Tue 6/2

1:00 pm-5:49 pm

1 stop5h 49m

$258

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 Illinois to Washington, D.C. Reagan-National Airport

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 Washington, D.C. Reagan-National Airport?

The month of July is, on average, the cheapest month to fly to Washington, D.C. Reagan-National Airport from Illinois, with most prices found around $263. If you aren’t able to travel to Washington, D.C. Reagan-National Airport during the month of July, then flying in August is also cheap. Prices for this month can be found on momondo for an average of $263.

What is the cheapest day to depart on your flight to Washington, D.C. Reagan-National Airport?

The cheapest day to depart from Illinois to Washington, D.C. Reagan-National Airport is on a Thursday. Travelers who choose to depart for Washington, D.C. Reagan-National Airport on a Thursday will often find tickets for as low as $295. Flights from Illinois to Washington, D.C. Reagan-National Airport on a Monday will generally be more expensive and average around $390. 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 Washington, D.C. Reagan-National Airport?

Our data shows that the cheapest Illinois to Washington, D.C. Reagan-National Airport flights are usually those with departure times at noon. Our users have found flights to Washington, D.C. Reagan-National Airport at noon for as low as $310. In contrast, the most expensive time of day to depart to Washington, D.C. Reagan-National Airport is in the afternoon when prices are around $344.

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

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

How far in advance should I book a flight to Washington, D.C. Reagan-National Airport?

You are more likely to see cheaper flights to Washington, D.C. Reagan-National Airport from Illinois when booking weeks ahead of your departure date. In general, you can expect to find flights to Washington, D.C. Reagan-National Airport for around $325 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Washington, D.C. Reagan-National Airport from Illinois for as low as $185 on momondo.

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

There are 4 cabin classes available to choose from on Illinois to Washington, D.C. Reagan-National flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

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

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

Best Price Found	$174
Fastest flight time	1h 45m
Direct flights	Every day

The best one-way flight to Washington, D.C. Reagan-National Airport from Illinois in the past 72 hours is $174. The best round-trip flight deal from Illinois to Washington, D.C. Reagan-National Airport found on momondo in the last 72 hours is $300.

The fastest flight from Illinois to Washington, D.C. Reagan-National Airport takes 1h 45m

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

Search flight deals

When did momondo last update prices for flights from Illinois to Washington, D.C. Reagan-National Airport?
Prices for flights from Illinois to Washington, D.C. Reagan-National Airport are refreshed on a daily basis.
How many operators does momondo search for flights from Illinois to Washington, D.C. Reagan-National Airport?
As of March 2026, there are 6 operators available to choose from for flights from Illinois to Washington, D.C. Reagan-National Airport.
How old do you have to be to fly from Illinois to Washington, D.C. Reagan-National Airport?
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 Illinois to Washington, D.C. Reagan-National Airport.
What documentation or ID do you need to fly to Washington, D.C. Reagan-National Airport?
The required travel and health documents for your Washington, D.C. Reagan-National Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Washington, D.C. Reagan-National Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular plane model from Illinois to Washington, D.C. Reagan-National Airport?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from Illinois to Washington, D.C. Reagan-National Airport is Airbus A319 (19.07% of total bookings). The next most popular plane models are Boeing 737-800 (15.83%), Boeing 737 MAX 8 (10.15%), and Boeing 737-700 (8.01%).

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

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

Airline	Rating	Free Cancellation	Price
Frontier	PriceFrom $85	Free Cancellation	Rating 5.7 3,040 reviews	Search Frontier flights
Delta	PriceFrom $124	Free Cancellation	Rating 7.9 8,242 reviews	Search Delta flights
JetBlue	PriceFrom $141	Free Cancellation	Rating 7.2 2,894 reviews	Search JetBlue flights
American Airlines	PriceFrom $163	Free Cancellation	Rating 7.1 11,370 reviews	Search American Airlines flights
Southwest	PriceFrom $197	Free Cancellation	Rating 8.0 4,303 reviews	Search Southwest flights
United Airlines	PriceFrom $202	Free Cancellation	Rating 7.4 9,371 reviews	Search United Airlines flights

Alexandria

National Harbor

Gettysburg

Arlington

Waldorf

Woodbridge

Colonial Beach

Laurel

Towson

Silver Spring

Gaithersburg

Fredericksburg

Rockville

Tysons

Manassas

Springfield

Bethesda

Fairfax

Linthicum Heights

Reston

Why use momondo?

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

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 Washington, D.C. from Illinois.

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

momondo does allow users to show only those flights to Washington, D.C. from Illinois which offer a flexible booking policy as well as other useful filters and features.

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

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 Illinois to Washington, D.C..

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

If you are not ready to book a flight from Illinois to Washington, D.C. now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Washington, D.C. and let you know when they change.

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Cheap flights from Illinois to Washington, D.C. from $85

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Illinois to Washington, D.C. departing on 4/10. 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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Delta flights from Illinois to Washington, D.C. Reagan-National Airport

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

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

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

momondo Fare Finder

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

See travel insights to Washington, D.C. from

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

What is the cheapest month to fly to Washington, D.C. Reagan-National Airport?

What is the cheapest day to depart on your flight to Washington, D.C. Reagan-National Airport?

What is the cheapest time of day to depart on your flight to Washington, D.C. Reagan-National Airport?

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

How far in advance should I book a flight to Washington, D.C. Reagan-National Airport?

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

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

What airlines fly to Washington, D.C. Reagan-National Airport?

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

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

How long does it take to fly to Washington, D.C. Reagan-National Airport?

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

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

Best Price Found

Fastest flight time

Direct flights

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

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

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List of cabin classes available on flights landing in Washington, D.C.. Availability may vary depending on flight origin and airline.

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