How does KAYAK find such low prices on flights from Illinois to Washington, D.C.?

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Illinois to Washington, D.C.. Visit our flight page for the latest deals!>/a>

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Illinois to Washington, D.C.?

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Washington, D.C. from Illinois is likely to change within 7 days, so travelers know whether to wait or book now. Visit our flight page for the latest deals!>/a>

What is the Hacker Fare option on flights from Illinois to Washington, D.C.?

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Washington, D.C. with an airline and back to Illinois with another airline. Visit our flight page for the latest deals!>/a>

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Illinois to Washington, D.C.?

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Washington, D.C. from Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best. Visit our flight page for the latest deals!>/a>

$52 CHEAP FLIGHTS from Illinois to Washington, D.C.

KAYAK searches hundreds of travel sites at once for deals on flights to Washington, D.C.

...and more

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41.299.237 searches in the past 7 days on KAYAK

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Cheapest round-trip

$93

Overall average: $248

Frontier

Thu 1/22Sun 1/25

ORD - BWI • Non-stop

Cheapest non-stop

$104

Typical prices: $199-$336

Frontier

Mon 1/5Mon 1/12

ORD - BWI • Non-stop

Start a new search

KAYAK searches 100s of sites at once to find you the best travel deals.

We hope you love your trip to Washington, D.C.!

Flight Deals

Cheap Flights from Illinois to Washington, D.C.

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Illinois to Washington, D.C. that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.

Discover the best prices for you by selecting your travel dates on KAYAK.

Round-trip

One-way

Last minute

Direct

Recent round-trip flight deals from Illinois to Washington, D.C.

Thu, Jan 22 - Sun, Jan 25

8:10 am - 11:10 am

ORD

BWI

2h 00mnonstop

6:00 am - 1:37 pm

BWI

ORD

8h 37m1 stop

$93Frontier

Thu, Jan 8 - Mon, Jan 12

10:48 am - 11:47 pm

ORD

BWI

11h 59m1 stop

8:17 pm - 9:41 pm

BWI

ORD

2h 24mnonstop

$94Multiple Airlines

Thu, Jan 8 - Mon, Jan 12

4:20 pm - 7:22 pm

ORD

BWI

2h 02mnonstop

11:30 am - 5:52 pm

BWI

ORD

7h 22m1 stop

$95Multiple Airlines

Fri, Jan 23 - Thu, Feb 5

6:05 am - 9:05 am

ORD

BWI

2h 00mnonstop

11:24 am - 10:46 pm

BWI

ORD

12h 22m1 stop

$97Frontier

Thu, Jan 8 - Mon, Jan 12

6:07 pm - 11:49 am

ORD

BWI

16h 42m1 stop

4:45 pm - 6:09 pm

BWI

ORD

2h 24mnonstop

$98Frontier

Tue, Jan 6 - Wed, Jan 7

12:09 pm - 11:49 pm

ORD

BWI

10h 40m1 stop

8:38 pm - 9:48 pm

BWI

ORD

2h 10mnonstop

$100Spirit Airlines

Fri, Jan 23 - Mon, Jan 26

5:15 pm - 8:10 pm

MDW

BWI

1h 55mnonstop

7:45 am - 9:05 am

BWI

MDW

2h 20mnonstop

$116Southwest

Thu, Jan 8 - Mon, Jan 12

9:50 am - 12:40 pm

MDW

BWI

1h 50mnonstop

10:25 am - 11:35 am

BWI

MDW

2h 10mnonstop

$139Southwest

Fri, Jan 16 - Mon, Jan 19

4:15 pm - 9:52 pm

ORD

DCA

4h 37m1 stop

7:30 am - 8:52 am

DCA

ORD

2h 22mnonstop

$167United Airlines

Fri, Jan 30 - Mon, Feb 2

9:00 am - 11:58 am

ORD

DCA

1h 58mnonstop

10:30 am - 11:46 am

DCA

ORD

2h 16mnonstop

$186United Airlines

Useful Info

Low season	September
High season	March
Cheapest flight	$52

Best time to beat the crowds with an average 16% drop in price.

Most popular time to fly with an average 22% increase in price.

Flight from St. Louis to Baltimore

How does KAYAK find such low prices on flights from Illinois to Washington, D.C.?
KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Illinois to Washington, D.C..
How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Illinois to Washington, D.C.?
KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Washington, D.C. from Illinois is likely to change within 7 days, so travelers know whether to wait or book now.
What is the Hacker Fare option on flights from Illinois to Washington, D.C.?
Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Washington, D.C. with an airline and back to Illinois with another airline.
What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Illinois to Washington, D.C.?
Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Washington, D.C. from Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Linthicum Heights

Hanover

Springfield

Gaithersburg

Towson

Oxon Hill

Owings Mills

Glen Burnie

Greenbelt

Ellicott City

Edgewood

Colonial Beach

Pikesville

Hunt Valley

Lutherville Timonium

Camp Springs

Stevensville

Hyattsville

Westminster

Capitol Heights

Everything you need to know for your flight to Washington, D.C.

Cabin class

Complete your trip

Direct Flights

Flights to other cities

Origins

Other airports

Return flight deals

Cabin class types available on flights to Illinois

First Class flights to Washington, D.C.from $511

Business Class flights to Washington, D.C.from $381

Prem Econ Class flights to Washington, D.C.from $451

Economy Class flights to Washington, D.C.from $58

$52 Find Cheap Flights from Illinois to Washington, D.C.

KAYAK searches hundreds of travel sites at once for deals on flights to Washington, D.C.

Everything you should know

Cheap Flights from Illinois to Washington, D.C.

Recent round-trip flight deals from Illinois to Washington, D.C.

Recent one-way flight deals from Illinois to Washington, D.C.

Recent last minute flight deals from Illinois to Washington, D.C.

Recent direct flight deals from Illinois to Washington, D.C.

Good to know

FAQs for booking flights from Illinois to Washington, D.C.

How does KAYAK find such low prices on flights from Illinois to Washington, D.C.?

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Illinois to Washington, D.C..

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Illinois to Washington, D.C.?

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Washington, D.C. from Illinois is likely to change within 7 days, so travelers know whether to wait or book now.

What is the Hacker Fare option on flights from Illinois to Washington, D.C.?

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Washington, D.C. with an airline and back to Illinois with another airline.

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Illinois to Washington, D.C.?

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Washington, D.C. from Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

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

Everything you need to know for your flight to Washington, D.C.

Cabin class types available on flights to Illinois

Complete your trip to Washington, D.C. with a hotel stay or car rental

Find direct flights for Washington, D.C.

Flights to other popular destinations

Flights from domestic origins to Washington, D.C.

Choose which airport to fly into in Washington, D.C.

Find deals for your return flight