IAD

$54 Find Cheap Flights from Illinois to Washington Dulles Airport

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to Dulles Intl departing on 3/11. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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

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41,299,237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest round-trip
$141
Overall average: $299
Multiple Airlines
Fri 3/6Wed 3/11
ORD - IAD • 2 stops
Cheapest non-stop
$197
Typical prices: $250-$385
United Airlines
Tue 3/10Tue 3/10
ORD - IAD • Non-stop
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We hope you love your trip to Dulles Intl!
Flight Deals
Useful Info
Flight Deals

Cheap Flights from Illinois to Dulles Intl

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Illinois to Dulles Intl 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.

Recent round-trip flight deals from Illinois to Dulles Intl

Fri, Mar 6 - Wed, Mar 11
Multiple Airlines Logo
6:51 pm - 12:31 am
ORD
-
IAD
28h 40m
2 stops
Multiple Airlines Logo
6:20 am - 5:57 pm
IAD
-
ORD
12h 37m
1 stop
$141Multiple Airlines
Mon, Mar 9 - Wed, Mar 11
Frontier Logo
4:44 pm - 12:31 am
ORD
-
IAD
6h 47m
1 stop
Frontier Logo
6:20 am - 5:57 pm
IAD
-
ORD
12h 37m
1 stop
$142Frontier
Sat, Feb 28 - Mon, Mar 2
Frontier Logo
4:42 pm - 10:30 am
ORD
-
IAD
16h 48m
1 stop
Frontier Logo
5:22 pm - 10:51 am
IAD
-
ORD
18h 29m
1 stop
$143Frontier
Sat, Feb 28 - Mon, Mar 2
Multiple Airlines Logo
6:51 pm - 10:40 am
ORD
-
IAD
38h 49m
2 stops
Multiple Airlines Logo
5:22 pm - 10:51 am
IAD
-
ORD
18h 29m
1 stop
$148Multiple Airlines
Tue, Mar 3 - Wed, Mar 4
United Airlines Logo
10:46 am - 4:05 pm
MLI
-
IAD
4h 19m
1 stop
United Airlines Logo
1:02 pm - 4:47 pm
IAD
-
MLI
4h 45m
1 stop
$251United Airlines
Sat, Feb 28 - Sun, Mar 8
United Airlines Logo
2:51 pm - 9:18 pm
PIA
-
IAD
5h 27m
1 stop
United Airlines Logo
8:30 am - 12:43 pm
IAD
-
PIA
5h 13m
1 stop
$260United Airlines
Fri, Jun 12 - Mon, Jun 15
Delta Logo
11:00 am - 6:30 pm
MLI
-
IAD
6h 30m
1 stop
Delta Logo
6:00 am - 10:26 am
IAD
-
MLI
5h 26m
1 stop
$274Delta
Thu, Feb 19 - Sat, Feb 21
Delta Logo
3:36 pm - 8:45 pm
BMI
-
IAD
4h 09m
1 stop
Delta Logo
10:57 am - 2:54 pm
IAD
-
BMI
4h 57m
1 stop
$274Delta
Wed, Apr 8 - Sat, Apr 11
American Airlines Logo
7:00 am - 2:47 pm
STL
-
IAD
6h 47m
1 stop
American Airlines Logo
3:26 pm - 7:30 pm
IAD
-
STL
5h 04m
1 stop
$279American Airlines
Tue, Mar 3 - Wed, Mar 4
American Airlines Logo
12:36 pm - 8:30 pm
MLI
-
IAD
6h 54m
1 stop
American Airlines Logo
11:30 am - 11:28 pm
IAD
-
MLI
12h 58m
2 stops
$290American Airlines
Useful Info

Good to know

Low seasonJanuary
Cheapest flight$54
Best time to beat the crowds but there is an average 15% increase in price.
Most popular time to fly and prices are also 2% lower on average.
Flight from St. Louis to Washington Dulles Airport

FAQs for booking Illinois to Washington Dulles Airport flights

  • How does KAYAK find such low prices on flights from Illinois to Washington Dulles Airport?

    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 Dulles Airport.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Illinois to Washington Dulles Airport?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Washington Dulles Airport 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 Dulles Airport?

    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 Dulles Airport 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 Dulles Airport?

    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 Dulles Airport 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 Dulles Intl?

Book flights to Dulles Intl if you plan to visit one of these locations
Winchester
Linthicum Heights
Hanover
Springfield
Gaithersburg
Towson
Martinsburg
Oxon Hill
Owings Mills
Charles Town
Glen Burnie
Greenbelt
Ellicott City
Edgewood
Colonial Beach
Pikesville
Lutherville Timonium
Hunt Valley
Camp Springs
Stevensville

Everything you need to know for your flight to Dulles Intl

Information on your arrival and departure airports

Washington Dulles Airport (IAD)