What airlines fly to Washington, D.C.?

United Airlines, American Airlines and Southwest 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 43% of people opting to fly with this airline when traveling to Washington, D.C.. Keep in mind that there are 6 different airlines that fly to Washington, D.C. on a routine basis, so you have a few additional options to choose from.

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

As of August 2025, there are 105 flights per day flying from Illinois to Washington, D.C.. The most common time of day flights depart is 8:00AM, with 38% of flights taking off in the afternoon.

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 Baltimore (one of the most popular routes), then the duration is 1h 47m on average. Another popular route from Illinois to Washington, D.C. is flying from Peoria to Baltimore, which will take roughly 4h 22m. 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 week?

741 flights are operational weekly from Illinois to Washington, D.C. as of August 2025. The most popular departure day for this route is Thu, with 19% of flights per week taking off on this day.

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

Frontier, Spirit Airlines, and Southwest are the most popular carriers operating 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 August 2025, there are 6 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.

$39 Cheap Flights from Illinois to Washington, D.C. in 2025

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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

1:49 pm - 4:50 pmMDW-BWI

2h 01mnonstop

5:40 pm - 6:43 pmBWI-MDW

2h 03mnonstop

$76Frontier

Find Deal

Fri, Sep 19 - Sun, Sep 21

12:53 pm - 3:56 pmORD-BWI

2h 03mnonstop

4:51 pm - 6:07 pmBWI-ORD

2h 16mnonstop

$76Frontier

Find Deal

Fri, Oct 17 - Mon, Oct 20

6:10 am - 9:02 amORD-BWI

1h 52mnonstop

9:57 am - 11:10 amBWI-ORD

2h 13mnonstop

$88Spirit Airlines

Find Deal

Thu, Sep 25 - Sun, Sep 28

6:30 am - 9:22 amORD-BWI

1h 52mnonstop

10:17 am - 11:30 amBWI-ORD

2h 13mnonstop

$89Spirit Airlines

Find Deal

Fri, Oct 24 - Sun, Oct 26

11:21 am - 8:53 pmORD-BWI

8h 32m1 stop

9:59 pm - 11:20 pmBWI-ORD

2h 21mnonstop

$120

Find Deal

Mon, Aug 25 - Fri, Sep 12

6:11 pm - 9:14 pmORD-BWI

2h 03mnonstop

9:57 am - 11:10 amBWI-ORD

2h 13mnonstop

$123

Find Deal

Thu, Sep 4 - Sun, Sep 7

8:35 am - 11:30 amMDW-BWI

1h 55mnonstop

7:25 pm - 8:25 pmBWI-MDW

2h 00mnonstop

$139Southwest

Find Deal

Wed, Sep 24 - Wed, Sep 24

1:50 pm - 4:55 pmORD-BWI

2h 05mnonstop

10:35 am - 11:50 amBWI-ORD

2h 15mnonstop

$139Southwest

Find Deal

Wed, Sep 24 - Sat, Sep 27

6:00 am - 9:03 amSTL-DCA

2h 03mnonstop

7:50 pm - 9:10 pmDCA-STL

2h 20mnonstop

$173American Airlines

Find Deal

Wed, Sep 3 - Fri, Sep 5

6:00 am - 9:03 amSTL-DCA

2h 03mnonstop

2:56 pm - 4:15 pmDCA-STL

2h 19mnonstop

$174American Airlines

Find Deal

Fri, Sep 26 - Fri, Oct 3

Frontier flights from Illinois to Washington, D.C.

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

Frontier

Sep 19

MDW1:49 pmChicago Midway

2h 01m

BWI4:50 pmBaltimore/Washington

Sep 21

BWI5:40 pmBaltimore/Washington

2h 03m

MDW6:43 pmChicago Midway

$76

Find similar

Frontier

Sep 5

MDW1:49 pmChicago Midway

2h 01m

BWI4:50 pmBaltimore/Washington

Sep 7

BWI5:40 pmBaltimore/Washington

2h 03m

MDW6:43 pmChicago Midway

$78

Find similar

Frontier

Aug 29

ORD1:15 pmChicago O'Hare Intl

2h 06m

BWI4:21 pmBaltimore/Washington

Sep 1

BWI5:06 pmBaltimore/Washington

2h 22m

ORD6:28 pmChicago O'Hare Intl

$97

Find similar

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

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

Spirit Airlines

Sep 25

ORD6:10 amChicago O'Hare Intl

1h 52m

BWI9:02 amBaltimore/Washington

Sep 28

BWI9:57 amBaltimore/Washington

2h 13m

ORD11:10 amChicago O'Hare Intl

$88

Find similar

Spirit Airlines

Oct 24

ORD6:30 amChicago O'Hare Intl

1h 52m

BWI9:22 amBaltimore/Washington

Oct 26

BWI10:17 amBaltimore/Washington

2h 13m

ORD11:30 amChicago O'Hare Intl

$89

Find similar

Spirit Airlines

Sep 11

ORD6:10 amChicago O'Hare Intl

1h 52m

BWI9:02 amBaltimore/Washington

Sep 18

BWI9:57 amBaltimore/Washington

2h 13m

ORD11:10 amChicago O'Hare Intl

$90

Find similar

momondo Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

ChicagoBaltimore

MDW - BWI

MDWBWI

Chicago Midway

Fri 9/19

1:49 pm-4:50 pm

Nonstop2h 01m

Baltimore/Washington

Sun 9/21

5:40 pm-6:43 pm

Nonstop2h 03m

$76

ChicagoBaltimore

ORD - BWI

ORDBWI

Chicago O'Hare Intl

Fri 10/17

12:53 pm-3:56 pm

Nonstop2h 03m

Baltimore/Washington

Mon 10/20

4:51 pm-6:07 pm

Nonstop2h 16m

$76

ChicagoBaltimore

ORD - BWI

ORDBWI

Chicago O'Hare Intl

Thu 9/25

6:10 am-9:02 am

Nonstop1h 52m

Baltimore/Washington

Sun 9/28

9:57 am-11:10 am

Nonstop2h 13m

$88

ChicagoBaltimore

ORD - BWI

ORDBWI

Chicago O'Hare Intl

Fri 10/24

6:30 am-9:22 am

Nonstop1h 52m

Baltimore/Washington

Sun 10/26

10:17 am-11:30 am

Nonstop2h 13m

$89

ChicagoBaltimore

ORD - BWI

ORDBWI

Chicago O'Hare Intl

Mon 8/25

11:21 am-8:53 pm

1 stop8h 32m

Baltimore/Washington

Fri 9/12

9:59 pm-11:20 pm

Nonstop2h 21m

$120

ChicagoBaltimore

ORD - BWI

ORDBWI

Chicago O'Hare Intl

Thu 9/4

6:11 pm-9:14 pm

Nonstop2h 03m

Baltimore/Washington

Sun 9/7

9:57 am-11:10 am

Nonstop2h 13m

$123

ChicagoBaltimore

MDW - BWI

MDWBWI

Chicago Midway

Wed 9/24

8:35 am-11:30 am

Nonstop1h 55m

Baltimore/Washington

Wed 9/24

7:25 pm-8:25 pm

Nonstop2h 00m

$139

ChicagoBaltimore

ORD - BWI

ORDBWI

Chicago O'Hare Intl

Wed 9/24

1:50 pm-4:55 pm

Nonstop2h 05m

Baltimore/Washington

Sat 9/27

10:35 am-11:50 am

Nonstop2h 15m

$139

St. LouisWashington, D.C.

STL - DCA

STLDCA

Lambert-St Louis

Wed 9/3

6:00 am-9:03 am

Nonstop2h 03m

Washington, D.C. Reagan-National

Fri 9/5

7:50 pm-9:10 pm

Nonstop2h 20m

$173

St. LouisWashington, D.C.

STL - DCA

STLDCA

Lambert-St Louis

Fri 9/26

6:00 am-9:03 am

Nonstop2h 03m

Washington, D.C. Reagan-National

Fri 10/3

2:56 pm-4:15 pm

Nonstop2h 19m

$174

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 $169. 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 $210.

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 $300. However, this price may fluctuate depending on the airline, the season, and holidays. When flying out on a Monday, the most expensive travel day of the week, you can expect to see flight prices from Illinois to Washington, D.C. for around $455.

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 $304. 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 $652. 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 Midway 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 $270 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 $209 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	$39
Fastest flight time	1h 45m
Direct flights	Every day
Airports in Washington, D.C.	3 airports

The best one-way flight to Washington, D.C. from Illinois in the past 72 hours is $39. The best round-trip flight deal from Illinois to Washington, D.C. found on momondo in the last 72 hours is $76.

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

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

There are 3 airports near Washington, D.C.: Washington, D.C. Reagan-National (DCA), Baltimore/Washington (BWI), Washington, D.C. Dulles Intl (IAD)

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 August 2025, there are 6 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 A320-100/200 (11.03% of total bookings). The next most popular plane models are Airbus A319 (10.79%), Boeing 737-800 (9.52%), and Airbus A320neo (8.51%).

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 $46	Free Cancellation	Rating 6.3 8,047 reviews	Search Spirit Airlines flights
Frontier	PriceFrom $78	Free Cancellation	Rating 5.8 3,222 reviews	Search Frontier flights
American Airlines	PriceFrom $137	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights
Southwest	PriceFrom $140	Free Cancellation	Rating 8.0 4,247 reviews	Search Southwest flights
United Airlines	PriceFrom $163	Free Cancellation	Rating 7.4 8,922 reviews	Search United Airlines flights
Delta	PriceFrom $166	Free Cancellation	Rating 8.0 7,982 reviews	Search Delta flights

Alexandria

Gettysburg

Arlington

National Harbor

Woodbridge

Tysons

Laurel

Silver Spring

Waldorf

Fredericksburg

Colonial Beach

Manassas

Rockville

Towson

Gaithersburg

Fairfax

Reston

Glen Burnie

Linthicum Heights

Springfield

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.

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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.

Washington, D.C. Reagan-National Airport

Washington, D.C. Dulles Intl Airport

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Cheap flights from Illinois to Washington, D.C. from $39

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 9/15. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Big names and deals

Filter for what you want

Filter for what you want

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Price Alerts

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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

Frontier flights from Illinois to Washington, D.C.

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

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

Our best Spirit Airlines 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.

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 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?

Fly from Chicago Midway 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.?

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..

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

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

As of August 2025, there are 105 flights per day flying from Illinois to Washington, D.C.. The most common time of day flights depart is 8:00AM, with 38% of flights taking off in the afternoon.

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

741 flights are operational weekly from Illinois to Washington, D.C. as of August 2025. The most popular departure day for this route is Thu, with 19% of flights per week taking off on this day.

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.

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

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

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

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

What is the most popular plane model 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?

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

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

How can momondo help me find flights 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?

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.