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>

$36 CHEAP FLIGHTS from Illinois to Washington, D.C.

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

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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.

Fri, Nov 14 - Sun, Nov 16

3:40 pm - 6:35 pmMDW-BWI

1h 55mnonstop

9:21 am - 10:26 amBWI-MDW

2h 05mnonstop

$73Frontier

Find Deal

Fri, Nov 14 - Sun, Nov 16

12:04 pm - 3:07 pmORD-BWI

2h 03mnonstop

4:00 pm - 5:16 pmBWI-ORD

2h 16mnonstop

$74Frontier

Find Deal

Thu, Sep 4 - Thu, Sep 11

6:10 am - 9:02 amORD-BWI

1h 52mnonstop

9:57 am - 11:10 amBWI-ORD

2h 13mnonstop

$88Spirit Airlines

Find Deal

Fri, Oct 24 - Sun, Oct 26

6:30 am - 9:22 amORD-BWI

1h 52mnonstop

10:17 am - 11:30 amBWI-ORD

2h 13mnonstop

$89Spirit Airlines

Find Deal

Mon, Aug 25 - Fri, Sep 12

11:21 am - 8:53 pmORD-BWI

8h 32m1 stop

9:59 pm - 11:20 pmBWI-ORD

2h 21mnonstop

$120

Find Deal

Thu, Sep 4 - Sun, Sep 7

7:40 am - 11:00 amORD-BWI

26h 20m1 stop

9:57 am - 11:10 amBWI-ORD

2h 13mnonstop

$123

Find Deal

Sat, Sep 13 - Sat, Sep 20

7:00 am - 9:50 amMDW-BWI

1h 50mnonstop

7:35 am - 8:35 amBWI-MDW

2h 00mnonstop

$139Southwest

Find Deal

Mon, Sep 8 - Thu, Sep 11

7:25 pm - 10:30 pmSTL-DCA

2h 05mnonstop

8:00 am - 9:10 amDCA-STL

2h 10mnonstop

$173Southwest

Find Deal

Thu, Sep 4 - Sun, Sep 7

8:15 am - 11:25 amSTL-IAD

2h 10mnonstop

8:40 am - 10:02 amIAD-STL

2h 22mnonstop

$173United Airlines

Find Deal

Thu, Sep 4 - Mon, Sep 8

1:10 pm - 4:20 pmSTL-IAD

2h 10mnonstop

5:53 pm - 11:44 pmIAD-STL

6h 51m1 stop

$183United Airlines

Find Deal

Useful Info

Low season	February
High season	October
Cheapest flight	$36

Best time to beat the crowds but there is an average 4% increase in price.

Most popular time to fly and prices are also 16% lower on average.

Flight from Chicago Midway 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

Springfield

Hanover

Gaithersburg

Towson

Oxon Hill

Owings Mills

Glen Burnie

Greenbelt

Ellicott City

Edgewood

Colonial Beach

Pikesville

Lutherville Timonium

Camp Springs

Stevensville

Capitol Heights

Hyattsville

Hunt Valley

Westminster

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 $389

Business Class flights to Washington, D.C.from $354

Prem Econ Class flights to Washington, D.C.from $471

Economy Class flights to Washington, D.C.from $89

Not what you’re looking for? Find thousands of other hotels, flights, car rentals and package deals with KAYAK.

$36 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.

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