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 51% 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.

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

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

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 30m 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 4h 18m. Keep in mind that layovers or delays could extend your travel time.

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

As of May 2026, there are 118 flights per day flying from Illinois to Washington, D.C.. The most common time of day flights depart is 11:00AM, with 38% of flights taking off at noon.

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

828 flights are operational weekly from Illinois to Washington, D.C. as of May 2026. The most popular departure day for this route is Thu, with 18% of flights per week taking off on this day.

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 May 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.

$63 Cheap Flights from Illinois to Washington, D.C. in 2026

1 adult

0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

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.

6:31 pm - 7:35 am

STL

BWI

12h 04m

1 stop

9:32 pm - 5:30 pm

BWI

STL

20h 58m

1 stop

$123Frontier

Thu, Jun 11 - Mon, Jun 15

5:27 pm - 7:43 am

STL

BWI

13h 16m

1 stop

9:13 pm - 8:55 am

BWI

STL

12h 42m

1 stop

$126Frontier

Mon, Jun 1 - Tue, Jun 2

7:25 am - 10:15 am

MDW

BWI

1h 50mnonstop

8:30 pm - 9:35 pm

BWI

MDW

2h 05mnonstop

$197Southwest

Tue, Jun 9 - Tue, Jun 16

9:25 pm - 12:33 am

ORD

BWI

2h 08mnonstop

6:20 am - 7:35 am

BWI

ORD

2h 15mnonstop

$197United Airlines

Tue, Jun 2 - Tue, Jun 9

12:50 pm - 5:55 pm

MDW

BWI

4h 05m

1 stop

6:30 pm - 7:35 pm

BWI

MDW

2h 05mnonstop

$207Southwest

Wed, Jun 17 - Tue, Jun 23

9:23 pm - 8:04 pm

MDW

IAD

21h 41m

1 stop

8:57 pm - 11:04 am

IAD

MDW

15h 07m

1 stop

$227Multiple Airlines

Fri, Jun 12 - Fri, Jun 19

8:59 pm - 11:59 pm

ORD

DCA

2h 00mnonstop

10:25 am - 2:00 pm

DCA

ORD

4h 35m

1 stop

$228American Airlines

Wed, Jun 3 - Sat, Jun 6

9:23 pm - 8:04 pm

MDW

IAD

21h 41m

1 stop

8:57 pm - 11:04 am

IAD

MDW

15h 07m

1 stop

$228Multiple Airlines

Fri, Jun 12 - Fri, Jun 19

3:00 pm - 6:12 pm

ORD

DCA

2h 12mnonstop

7:15 am - 8:29 am

DCA

ORD

2h 14mnonstop

$229United Airlines

Wed, Jun 3 - Thu, Jun 4

12:29 pm - 7:15 pm

ORD

DCA

5h 46m

1 stop

5:20 pm - 6:49 pm

DCA

ORD

2h 29mnonstop

$230American Airlines

Wed, Jun 17 - Tue, Jun 30

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

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

United Airlines

Jun 9

ORD9:25 pmChicago O'Hare Intl

2h 08m

BWI12:33 amBaltimore/Washington

Jun 16

BWI7:05 pmBaltimore/Washington

2h 24m

ORD8:29 pmChicago O'Hare Intl

$197

United Airlines

Jun 10

ORD6:20 pmChicago O'Hare Intl

2h 06m

BWI9:26 pmBaltimore/Washington

Jun 17

BWI8:25 amBaltimore/Washington

2h 14m

ORD9:39 amChicago O'Hare Intl

$210

United Airlines

Jun 3

ORD3:00 pmChicago O'Hare Intl

2h 12m

DCA6:12 pmWashington, D.C. Reagan-National

Jun 4

DCA7:15 amWashington, D.C. Reagan-National

2h 14m

ORD8:29 amChicago O'Hare Intl

$229

Delta flights from Illinois to Washington, D.C.

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

Delta

Jun 9

MDW11:05 amChicago Midway

5h 14m

1 stop

BWI5:19 pmBaltimore/Washington

Jun 23

BWI5:40 amBaltimore/Washington

5h 29m

1 stop

MDW10:09 amChicago Midway

$216

Delta

Jun 16

MDW9:17 amChicago Midway

6h 28m

1 stop

BWI4:45 pmBaltimore/Washington

Jun 24

BWI5:07 pmBaltimore/Washington

6h 10m

1 stop

MDW10:17 pmChicago Midway

$217

Delta

Jun 6

ORD5:19 pmChicago O'Hare Intl

4h 40m

1 stop

DCA10:59 pmWashington, D.C. Reagan-National

Jun 23

DCA7:30 pmWashington, D.C. Reagan-National

5h 29m

1 stop

ORD11:59 pmChicago O'Hare Intl

$237

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisBaltimore

STL - BWI

STLBWI

Lambert-St Louis

Thu 6/11

6:31 pm-7:35 am

1 stop12h 04m

Baltimore/Washington

Mon 6/15

9:32 pm-5:30 pm

1 stop20h 58m

$123

St. LouisBaltimore

STL - BWI

STLBWI

Lambert-St Louis

Mon 6/1

5:27 pm-7:43 am

1 stop13h 16m

Baltimore/Washington

Tue 6/2

9:13 pm-8:55 am

1 stop12h 42m

$126

Quickest round-trip

ChicagoBaltimore

MDW - BWI

MDWBWI

Chicago Midway

Tue 6/9

7:25 am-10:15 am

Nonstop1h 50m

Baltimore/Washington

Tue 6/16

8:30 pm-9:35 pm

Nonstop2h 05m

$197

ChicagoBaltimore

ORD - BWI

ORDBWI

Chicago O'Hare Intl

Tue 6/2

9:25 pm-12:33 am

Nonstop2h 08m

Baltimore/Washington

Tue 6/9

6:20 am-7:35 am

Nonstop2h 15m

$197

ChicagoBaltimore

MDW - BWI

MDWBWI

Chicago Midway

Wed 6/17

12:50 pm-5:55 pm

1 stop4h 05m

Baltimore/Washington

Tue 6/23

6:30 pm-7:35 pm

Nonstop2h 05m

$207

ChicagoWashington, D.C.

MDW - IAD

MDWIAD

Chicago Midway

Fri 6/12

9:23 pm-8:04 pm

1 stop21h 41m

Washington, D.C. Dulles Intl

Fri 6/19

8:57 pm-11:04 am

1 stop15h 07m

$227

ChicagoWashington, D.C.

ORD - DCA

ORDDCA

Chicago O'Hare Intl

Wed 6/3

8:59 pm-11:59 pm

Nonstop2h 00m

Washington, D.C. Reagan-National

Sat 6/6

10:25 am-2:00 pm

1 stop4h 35m

$228

ChicagoWashington, D.C.

MDW - IAD

MDWIAD

Chicago Midway

Fri 6/12

9:23 pm-8:04 pm

1 stop21h 41m

Washington, D.C. Dulles Intl

Fri 6/19

8:57 pm-11:04 am

1 stop15h 07m

$228

ChicagoWashington, D.C.

ORD - DCA

ORDDCA

Chicago O'Hare Intl

Wed 6/3

3:00 pm-6:12 pm

Nonstop2h 12m

Washington, D.C. Reagan-National

Thu 6/4

7:15 am-8:29 am

Nonstop2h 14m

$229

ChicagoWashington, D.C.

ORD - DCA

ORDDCA

Chicago O'Hare Intl

Wed 6/17

12:29 pm-7:15 pm

1 stop5h 46m

Washington, D.C. Reagan-National

Tue 6/30

5:20 pm-6:49 pm

Nonstop2h 29m

$230

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 October is, on average, the cheapest month to fly to Washington, D.C. from Illinois, with most prices found around $288. If you’re not able to fly to Washington, D.C. in October, then November is your next best option. Flight prices from Illinois to Washington, D.C. during November average around $323.

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 $362. 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 $565.

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 $375. 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 $774. 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 from Illinois 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 $338 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 $251 on momondo.

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	$144
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 $144. The best round-trip flight deal from Illinois to Washington, D.C. found on momondo in the last 72 hours is $242.

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), Washington, D.C. Dulles Intl (IAD).

Search flight deals

Frequently asked questions about flying from Illinois to Washington, D.C.

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 May 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 Boeing 737-800 (14.95% of total bookings). The next most popular plane models are Airbus A319 (14.61%), Boeing 737 MAX 8 (9.11%), and Boeing 737-900 (9.08%).

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 $38	Free Cancellation	Rating 6.2 8,626 reviews	Search Spirit Airlines flights
Frontier	PriceFrom $57	Free Cancellation	Rating 5.6 2,953 reviews	Search Frontier flights
United Airlines	PriceFrom $114	Free Cancellation	Rating 7.4 9,715 reviews	Search United Airlines flights
Southwest	PriceFrom $127	Free Cancellation	Rating 8.0 4,299 reviews	Search Southwest flights
JetBlue	PriceFrom $141	Free Cancellation	Rating 7.1 2,975 reviews	Search JetBlue flights
American Airlines	PriceFrom $148	Free Cancellation	Rating 7.1 11,663 reviews	Search American Airlines flights
Delta	PriceFrom $183	Free Cancellation	Rating 7.9 8,452 reviews	Search Delta flights

Alexandria

National Harbor

Gettysburg

Arlington

Waldorf

Woodbridge

Laurel

Gaithersburg

Colonial Beach

Fredericksburg

Silver Spring

Towson

Rockville

Manassas

Linthicum Heights

Tysons

Bethesda

Springfield

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.

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.

Start using Trips

Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

1 adult

Sat 6/13

Sat 6/20

Email me momondo's favorite deals

By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States

Nearby airports

Airlines

Cabin classes

Other United States destinations

Other flights from Illinois

Complete your trip

Feeling lucky

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

Washington, D.C. Reagan-National Airport

Washington, D.C. Dulles Intl Airport

Cheap flights from Illinois to Washington, D.C. from $63

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 6/15. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

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

Cheap round-trip flights

Cheap one-way flights

Cheap last minute flights

Cheap direct flights

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

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

Delta flights from Illinois to Washington, D.C.

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

momondo Fare Finder

Use the filters below to find and compare flights from Illinois to Washington, D.C. 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.

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 from Illinois to Washington, D.C.?

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

Direct flights

Airports in Washington, D.C.

Frequently asked questions about flying from Illinois to 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.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

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.

Fly your favorite airline to Washington, D.C.

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.

Popular cities in the United States

Popular flights according to clicks in the last 7 days on momondo

Fly to other destinations from Illinois

According to popular flight searches on momondo this year

Complete your trip to Washington, D.C.

Explore popular destinations other users love

According to popular flight searches on momondo this year