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

As of March 2026, there are 94 flights per day flying from Illinois to Washington, D.C.. The most common time of day flights depart is 8:00AM, with 35% of flights taking off in the evening.

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

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

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

663 flights are operational weekly from Illinois to Washington, D.C. as of March 2026. The most popular departure day for this route is Sun, with 20% of flights per week taking off on this day.

How long does it take to fly to Washington, D.C.?

Flight times from Illinois to Washington, D.C. 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 37m on average. Another popular route from Illinois to Washington, D.C. is flying from Peoria to Washington, D.C. Dulles Intl Airport, which will take roughly 3h 49m. Keep in mind that layovers or delays could extend your travel time.

What airlines fly to Washington, D.C.?

United Airlines, American Airlines and Frontier are the top three most popular airlines that fly to Washington, D.C. from Illinois according to our data. United Airlines is the first choice among our users, with 48% of people opting to fly with this airline when traveling to Washington, D.C.. Keep in mind that there are 7 different airlines that fly to Washington, D.C. on a routine basis, so you have a few additional options to choose from.

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

Prices for flights from Illinois to Washington, D.C. refresh daily.

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

As of March 2026, there are 7 operators available to choose from for flights from Illinois to Washington, D.C..

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

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Illinois to Washington, D.C..

What documentation or ID do you need to fly to Washington, D.C.?

The travel and health documents required for your trip to Washington, D.C. 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 Washington, D.C.. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$70 Cheap Flights from Illinois to Washington, D.C. in 2026

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

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

12:45 pm - 11:59 pm

ORD

BWI

10h 14m

1 stop

4:42 pm - 6:08 pm

BWI

ORD

2h 26mnonstop

$144Multiple Airlines

Tue, Apr 14 - Thu, Apr 16

5:50 am - 5:00 pm

ORD

BWI

10h 10m

1 stop

12:17 pm - 5:00 pm

BWI

ORD

5h 43m

1 stop

$145Frontier

Mon, Apr 20 - Tue, Apr 21

6:00 am - 6:22 pm

MDW

BWI

11h 22m

1 stop

6:45 am - 11:09 am

BWI

MDW

5h 24m

1 stop

$146Frontier

Thu, May 7 - Mon, May 11

7:15 pm - 9:15 am

ORD

BWI

13h 00m

1 stop

4:10 pm - 5:36 pm

BWI

ORD

2h 26mnonstop

$147Multiple Airlines

Fri, Apr 17 - Mon, Apr 20

2:40 pm - 11:00 pm

ORD

DCA

7h 20m

2 stops

9:05 am - 12:50 pm

DCA

ORD

4h 45m

1 stop

$210Southwest

Tue, May 5 - Wed, May 13

1:55 pm - 6:40 pm

MDW

DCA

3h 45m

1 stop

10:00 am - 11:05 am

DCA

MDW

2h 05mnonstop

$210Southwest

Tue, Apr 28 - Thu, Apr 30

8:57 pm - 11:59 pm

ORD

DCA

2h 02mnonstop

10:00 pm - 11:25 pm

DCA

ORD

2h 25mnonstop

$215American Airlines

Tue, May 26 - Sat, May 30

12:40 pm - 3:38 pm

ORD

DCA

1h 58mnonstop

6:00 pm - 7:21 pm

DCA

ORD

2h 21mnonstop

$223United Airlines

Thu, Apr 16 - Sat, May 2

6:00 am - 9:15 am

STL

DCA

2h 15mnonstop

8:41 pm - 10:07 pm

DCA

STL

2h 26mnonstop

$240American Airlines

Mon, May 18 - Wed, May 20

6:30 am - 1:00 pm

MLI

DCA

5h 30m

1 stop

6:30 am - 10:04 am

DCA

MLI

4h 34m

1 stop

$291United Airlines

Thu, Apr 30 - Sun, May 3

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

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

United Airlines

Apr 16

ORD2:25 pmChicago O'Hare Intl

2h 03m

IAD5:28 pmWashington, D.C. Dulles Intl

Apr 30

IAD8:20 amWashington, D.C. Dulles Intl

2h 17m

ORD9:37 amChicago O'Hare Intl

$223

United Airlines

May 26

ORD8:40 amChicago O'Hare Intl

2h 12m

IAD11:52 amWashington, D.C. Dulles Intl

May 29

IAD10:31 amWashington, D.C. Dulles Intl

2h 22m

ORD11:53 amChicago O'Hare Intl

$233

United Airlines

May 7

ORD7:45 pmChicago O'Hare Intl

2h 02m

DCA10:47 pmWashington, D.C. Reagan-National

May 11

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

2h 20m

ORD6:20 pmChicago O'Hare Intl

$239

Delta flights from Illinois to Washington, D.C.

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

Delta

May 26

MDW6:36 pmChicago Midway

3h 20m

1 stop

IAD10:56 pmWashington, D.C. Dulles Intl

May 28

IAD6:00 amWashington, D.C. Dulles Intl

3h 43m

1 stop

MDW8:43 amChicago Midway

$224

Delta

May 11

STL6:04 pmLambert-St Louis

3h 52m

1 stop

IAD10:56 pmWashington, D.C. Dulles Intl

May 13

IAD6:08 amWashington, D.C. Dulles Intl

4h 36m

1 stop

STL9:44 amLambert-St Louis

$242

Delta

Apr 13

ORD2:30 pmChicago O'Hare Intl

5h 25m

1 stop

DCA8:55 pmWashington, D.C. Reagan-National

Apr 22

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

7h 36m

1 stop

ORD8:16 pmChicago O'Hare Intl

$282

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

ChicagoBaltimore

ORD - BWI

ORDBWI

Chicago O'Hare Intl

Tue 4/14

12:45 pm-11:59 pm

1 stop10h 14m

Baltimore/Washington

Thu 4/16

4:42 pm-6:08 pm

Nonstop2h 26m

$144

ChicagoBaltimore

ORD - BWI

ORDBWI

Chicago O'Hare Intl

Mon 4/20

5:50 am-5:00 pm

1 stop10h 10m

Baltimore/Washington

Tue 4/21

12:17 pm-5:00 pm

1 stop5h 43m

$145

ChicagoBaltimore

MDW - BWI

MDWBWI

Chicago Midway

Thu 5/7

6:00 am-6:22 pm

1 stop11h 22m

Baltimore/Washington

Mon 5/11

6:45 am-11:09 am

1 stop5h 24m

$146

ChicagoBaltimore

ORD - BWI

ORDBWI

Chicago O'Hare Intl

Fri 4/17

7:15 pm-9:15 am

1 stop13h 00m

Baltimore/Washington

Mon 4/20

4:10 pm-5:36 pm

Nonstop2h 26m

$147

ChicagoWashington, D.C.

ORD - DCA

ORDDCA

Chicago O'Hare Intl

Tue 5/5

2:40 pm-11:00 pm

2 stops7h 20m

Washington, D.C. Reagan-National

Wed 5/13

9:05 am-12:50 pm

1 stop4h 45m

$210

ChicagoWashington, D.C.

MDW - DCA

MDWDCA

Chicago Midway

Tue 4/28

1:55 pm-6:40 pm

1 stop3h 45m

Washington, D.C. Reagan-National

Thu 4/30

10:00 am-11:05 am

Nonstop2h 05m

$210

ChicagoWashington, D.C.

ORD - DCA

ORDDCA

Chicago O'Hare Intl

Tue 5/26

8:57 pm-11:59 pm

Nonstop2h 02m

Washington, D.C. Reagan-National

Sat 5/30

10:00 pm-11:25 pm

Nonstop2h 25m

$215

Quickest round-trip

ChicagoWashington, D.C.

ORD - DCA

ORDDCA

Chicago O'Hare Intl

Thu 4/16

12:40 pm-3:38 pm

Nonstop1h 58m

Washington, D.C. Reagan-National

Sat 5/2

6:00 pm-7:21 pm

Nonstop2h 21m

$223

St. LouisWashington, D.C.

STL - DCA

STLDCA

Lambert-St Louis

Mon 5/18

6:00 am-9:15 am

Nonstop2h 15m

Washington, D.C. Reagan-National

Wed 5/20

8:41 pm-10:07 pm

Nonstop2h 26m

$240

MolineWashington, D.C.

MLI - DCA

MLIDCA

Moline Quad-City

Thu 4/30

6:30 am-1:00 pm

1 stop5h 30m

Washington, D.C. Reagan-National

Sun 5/3

6:30 am-10:04 am

1 stop4h 34m

$291

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.

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.?

The month of August is, on average, the cheapest month to fly to Washington, D.C. from Illinois, with most prices found around $164. If you’re not able to fly to Washington, D.C. in August, then September is your next best option. Flight prices from Illinois to Washington, D.C. during September average around $181.

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

On average, the least expensive day to fly to Washington, D.C. from Illinois is on a Friday. momondo users have found tickets for Friday departures for as low as $352. However, this price may fluctuate depending on the airline, the season, and holidays. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from Illinois to Washington, D.C. for around $568.

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

In the morning is the cheapest time of day to fly from Illinois to Washington, D.C. when you can find flight prices for as low as $357. Flying to Washington, D.C. in the morning is an ideal time because this is during off-peak travel hours. Try not to purchase tickets at noon because they tend to be around $788. Of course, these prices can vary depending on the time of year and what airport you fly to.

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

Fly from Chicago O'Hare Intl to Baltimore/Washington for the best Illinois - Washington, D.C. flight prices

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

You are more likely to see cheaper flights to Washington, D.C. from Illinois when booking weeks ahead of your departure date. In general, you can expect to find flights to Washington, D.C. for around $327 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Washington, D.C. from Illinois for as low as $273 on momondo.

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

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

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

Cheap Illinois to Washington, D.C. flight deals and tips

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

Best Price Found	$159
Fastest flight time	1h 41m
Direct flights	Every day
Airports in Washington, D.C.	2 airports

The best one-way flight to Washington, D.C. from Illinois in the past 72 hours is $159. The best round-trip flight deal from Illinois to Washington, D.C. found on momondo in the last 72 hours is $221.

The fastest flight from Illinois to Washington, D.C. takes 1h 41m

Direct flights go from Illinois to Washington, D.C. every day.

There are 2 airports in Washington, D.C.. From Illinois there are direct flights to Washington, D.C. Reagan-National (DCA), Baltimore/Washington (BWI).

Search flight deals

When did momondo last update prices for flights from Illinois to Washington, D.C.?
Prices for flights from Illinois to Washington, D.C. refresh daily.
How many operators does momondo search for flights from Illinois to Washington, D.C.?
As of March 2026, there are 7 operators available to choose from for flights from Illinois to Washington, D.C..
How old do you have to be to fly from Illinois to Washington, D.C.?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Illinois to Washington, D.C..
What documentation or ID do you need to fly to Washington, D.C.?
The travel and health documents required for your trip to Washington, D.C. 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 Washington, D.C.. 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 Illinois to Washington, D.C.?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from Illinois to Washington, D.C. is Airbus A319 (14.33% of total bookings). The next most popular plane models are Boeing 737-800 (13.18%), Boeing 737 MAX 8 (9.03%), and Boeing 737-900 (8.72%).

Best airlines flying from Illinois to Washington, D.C.

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

Airline	Rating	Free Cancellation	Price
Spirit Airlines	PriceFrom $42	Free Cancellation	Rating 6.3 8,558 reviews	Search Spirit Airlines flights
Frontier	PriceFrom $57	Free Cancellation	Rating 5.7 3,010 reviews	Search Frontier flights
United Airlines	PriceFrom $114	Free Cancellation	Rating 7.4 9,514 reviews	Search United Airlines flights
JetBlue	PriceFrom $141	Free Cancellation	Rating 7.2 2,906 reviews	Search JetBlue flights
American Airlines	PriceFrom $154	Free Cancellation	Rating 7.1 11,530 reviews	Search American Airlines flights
Southwest	PriceFrom $157	Free Cancellation	Rating 8.0 4,329 reviews	Search Southwest flights
Delta	PriceFrom $183	Free Cancellation	Rating 7.9 8,358 reviews	Search Delta flights

Alexandria

National Harbor

Gettysburg

Arlington

Waldorf

Woodbridge

Laurel

Colonial Beach

Gaithersburg

Towson

Silver Spring

Fredericksburg

Rockville

Tysons

Manassas

Linthicum Heights

Springfield

Bethesda

Fairfax

College Park

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?

Flights from Illinois to Washington, D.C. 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 Illinois to Washington, D.C.?

Once you have performed a search for Illinois to Washington, D.C. flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

Yes momondo offers price alerts on flights to Washington, D.C. from Illinois. 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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Fly into one of these airports located in Washington, D.C.

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Washington, D.C. Dulles Intl Airport

Cheap flights from Illinois to Washington, D.C. from $70

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 5/6. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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

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

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How to get the cheapest flight ticket from Illinois to Washington, D.C.

What is the cheapest month to fly to Washington, D.C.?

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

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

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

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

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

Can stopping save me money on Illinois to Washington, D.C. flights?

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

What airlines fly to Washington, D.C.?

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

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

How long does it take to fly to Washington, D.C.?

Cheap Illinois to Washington, D.C. flight deals and tips

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

Best Price Found

Fastest flight time

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Airports in Washington, D.C.

Best airlines flying from Illinois to Washington, D.C.

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

Traveling to a place near Washington, D.C.?

Why use momondo?

An easier way to manage your Washington, D.C. 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.

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Find better results for your trip to the United States

Fly into one of these airports located in Washington, D.C.

Airports listed have a maximum distance of 22.4 mi from Washington, D.C.

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

Cabin classes currently available on flights to Washington, D.C.

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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