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>

$55 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

$82

Overall average: $238

Frontier

Mon 1/26Sun 2/1

ORD - BWI • Non-stop

Cheapest one-way

$55

Typical prices: $85-$279

Frontier

Sun 1/18

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.

Mon, Jan 26 - Sun, Feb 1

8:45 am - 11:45 am

ORD

BWI

2h 00mnonstop

9:20 am - 10:47 am

BWI

ORD

2h 27mnonstop

$82Frontier

Thu, Apr 9 - Mon, Apr 13

6:00 am - 9:02 am

ORD

BWI

2h 02mnonstop

9:57 am - 11:21 am

BWI

ORD

2h 24mnonstop

$83Frontier

Tue, Feb 10 - Thu, Feb 12

12:44 pm - 10:53 pm

ORD

BWI

9h 09m1 stop

7:19 pm - 8:46 pm

BWI

ORD

2h 27mnonstop

$87Multiple Airlines

Mon, Jan 26 - Tue, Jan 27

8:45 am - 11:45 am

ORD

BWI

2h 00mnonstop

1:00 pm - 9:03 pm

BWI

ORD

9h 03m1 stop

$88Multiple Airlines

Thu, Jan 29 - Mon, Feb 2

9:50 am - 12:40 pm

MDW

BWI

1h 50mnonstop

5:50 pm - 7:00 pm

BWI

MDW

2h 10mnonstop

$129Southwest

Sat, Feb 28 - Tue, Mar 3

7:30 am - 10:25 am

MDW

BWI

1h 55mnonstop

5:50 pm - 7:00 pm

BWI

MDW

2h 10mnonstop

$134Southwest

Tue, Apr 28 - Thu, Apr 30

11:15 am - 2:14 pm

ORD

DCA

1h 59mnonstop

11:55 am - 1:15 pm

DCA

ORD

2h 20mnonstop

$150United Airlines

Mon, Feb 2 - Wed, Feb 4

1:00 pm - 4:00 pm

ORD

IAD

2h 00mnonstop

5:17 pm - 6:37 pm

IAD

ORD

2h 20mnonstop

$150United Airlines

Thu, Feb 12 - Thu, Feb 12

11:50 am - 2:41 pm

ORD

DCA

1h 51mnonstop

7:59 pm - 9:24 pm

DCA

ORD

2h 25mnonstop

$156American Airlines

Mon, Feb 9 - Thu, Feb 12

12:58 pm - 3:59 pm

ORD

DCA

2h 01mnonstop

8:20 am - 9:44 am

DCA

ORD

2h 24mnonstop

$157American Airlines

Useful Info

Low season	January
High season	March
Cheapest flight	$55

Best time to beat the crowds but there is an average 6% increase in price.

Most popular time to fly with an average 5% increase in price.

Flight from Chicago O'Hare Airport 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

Westminster

Hyattsville

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 $539

Business Class flights to Washington, D.C.from $502

Prem Econ Class flights to Washington, D.C.from $541

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

$55 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