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>

$51 Book CHEAP FLIGHTS from Illinois to Washington, D.C.

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Cheap Flight Deals 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.

Round-trip

One-way

Last minute

Direct

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

KAYAK's recommended round-trip deals from the most popular airlines that fly from Illinois to Washington, D.C..

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

Choose your dates

10:33 am - 1:19 pmORD-BWI

1h 46mnonstop

8:10 am - 9:24 amBWI-ORD

2h 14mnonstop

$104Spirit Airlines

Find Deal

Thu, May 15 - Sun, May 18

10:33 am - 1:19 pmORD-BWI

1h 46mnonstop

8:10 am - 9:24 amBWI-ORD

2h 14mnonstop

$106Spirit Airlines

Find Deal

Thu, May 8 - Sun, May 11

9:51 am - 12:48 pmMDW-BWI

1h 57mnonstop

10:03 am - 11:09 amBWI-MDW

2h 06mnonstop

$110Frontier

Find Deal

Thu, May 8 - Mon, May 12

9:51 am - 12:48 pmMDW-BWI

1h 57mnonstop

10:03 am - 11:09 amBWI-MDW

2h 06mnonstop

$112Frontier

Find Deal

Thu, May 8 - Mon, May 12

4:20 pm - 7:10 pmMDW-BWI

1h 50mnonstop

5:00 pm - 6:00 pmBWI-MDW

2h 00mnonstop

$158Southwest

Find Deal

Tue, Apr 29 - Tue, May 6

7:04 pm - 10:05 pmORD-BWI

2h 01mnonstop

7:26 am - 8:43 amBWI-ORD

2h 17mnonstop

$158American Airlines

Find Deal

Wed, May 14 - Wed, May 21

5:45 am - 8:30 amMDW-BWI

1h 45mnonstop

8:45 pm - 9:50 pmBWI-MDW

2h 05mnonstop

$159Southwest

Find Deal

Sat, May 10 - Tue, May 13

7:04 pm - 10:05 pmORD-BWI

2h 01mnonstop

7:26 am - 8:43 amBWI-ORD

2h 17mnonstop

$159American Airlines

Find Deal

Wed, May 14 - Wed, May 21

7:00 am - 9:54 amORD-BWI

1h 54mnonstop

6:15 am - 7:32 amBWI-ORD

2h 17mnonstop

$168United Airlines

Find Deal

Wed, Apr 23 - Wed, Apr 30

3:13 pm - 6:15 pmORD-DCA

2h 02mnonstop

6:00 am - 10:44 amDCA-ORD

5h 44m1 stop

$189United Airlines

Find Deal

Sat, May 24 - Sun, May 25

Low season	February
High season	March
Cheapest flight	$51

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

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

Flight from Chicago O'Hare Airport to Baltimore

UzomaFlew with American AirlinesORD-DCAJan 2024

ORD and DCA are nice airports with plenty of space. ORD is always busy so allow ample time to drive there, drop your bag, and go through security if you don't have TSA pre check.

BartoszFlew with Scandinavian AirlinesORD-IADFeb 2024

United or American are the best airlines to fly to DC

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.