IAD

$86 Find Cheap Flights from Illinois to Washington Dulles Airport - Compare and Save

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 7/6. 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

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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

Thu, Jul 9 - Wed, Jul 29
Frontier Logo
9:28 am - 6:01 pm
ORD
-
IAD
7h 33m
1 stop
Frontier Logo
8:33 pm - 7:53 am
IAD
-
ORD
12h 20m
1 stop
$249Frontier
Mon, Jul 13 - Sat, Jul 18
Frontier Logo
6:05 am - 5:14 pm
MDW
-
IAD
10h 09m
1 stop
Frontier Logo
6:49 am - 11:07 am
IAD
-
MDW
5h 18m
1 stop
$250Frontier
Tue, Jun 30 - Mon, Aug 17
Delta Logo
9:17 am - 4:42 pm
MDW
-
IAD
6h 25m
1 stop
Delta Logo
5:47 pm - 10:36 pm
IAD
-
MDW
5h 49m
1 stop
$251Delta
Wed, Jul 15 - Tue, Jul 21
Delta Logo
6:00 am - 11:37 am
MDW
-
IAD
4h 37m
1 stop
Delta Logo
6:00 am - 10:05 am
IAD
-
MDW
5h 05m
1 stop
$253Delta
Wed, Jul 22 - Sat, Jul 25
United Airlines Logo
6:30 pm - 12:45 am
MLI
-
IAD
5h 15m
1 stop
United Airlines Logo
3:39 pm - 6:56 pm
IAD
-
MLI
4h 17m
1 stop
$261United Airlines
Fri, Jul 3 - Sat, Jul 11
American Airlines Logo
4:20 pm - 12:10 am
MLI
-
IAD
6h 50m
1 stop
American Airlines Logo
5:03 am - 10:58 am
IAD
-
MLI
6h 55m
2 stops
$266American Airlines
Mon, Aug 17 - Wed, Aug 19
American Airlines Logo
3:25 pm - 10:55 pm
STL
-
IAD
6h 30m
1 stop
American Airlines Logo
1:23 pm - 4:25 pm
IAD
-
STL
4h 02m
1 stop
$266American Airlines
Sat, Jul 11 - Sat, Jul 18
United Airlines Logo
1:15 pm - 7:02 pm
MLI
-
IAD
4h 47m
1 stop
United Airlines Logo
3:39 pm - 6:56 pm
IAD
-
MLI
4h 17m
1 stop
$292United Airlines
Wed, Jul 1 - Sat, Jul 4
Multiple Airlines Logo
7:31 pm - 12:53 pm
SPI
-
IAD
16h 22m
1 stop
Multiple Airlines Logo
1:23 pm - 7:41 pm
IAD
-
SPI
7h 18m
1 stop
$442Multiple Airlines
Wed, Jul 1 - Sat, Jul 4
Multiple Airlines Logo
7:31 pm - 12:53 pm
SPI
-
IAD
16h 22m
1 stop
Multiple Airlines Logo
6:46 am - 7:41 pm
IAD
-
SPI
13h 55m
2 stops
$480Multiple Airlines
Useful Info

Good to know

Low seasonJanuary
Cheapest flight$86
Best time to beat the crowds but there is an average 4% increase in price.
Most popular time to fly with an average 11% increase in price.
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
Springfield
Hanover
Gaithersburg
Towson
Oxon Hill
Martinsburg
Owings Mills
Charles Town
Greenbelt
Glen Burnie
Edgewood
Ellicott City
Camp Springs
Pikesville
Colonial Beach
Hunt Valley
Lutherville Timonium
Chesapeake Beach

Everything you need to know for your flight to Dulles Intl

Information on your arrival and departure airports

Washington Dulles Airport (IAD)