IAD

$85 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 5/6. 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

Mon, May 4 - Thu, May 7
Frontier Logo
2:15 pm - 12:36 am
MDW
-
IAD
9h 21m
1 stop
Frontier Logo
7:27 pm - 3:57 pm
IAD
-
MDW
21h 30m
1 stop
$199Frontier
Wed, Jun 3 - Tue, Jun 9
Frontier Logo
12:04 pm - 11:09 pm
MDW
-
IAD
10h 05m
1 stop
Frontier Logo
9:28 am - 8:06 pm
IAD
-
MDW
11h 38m
1 stop
$201Frontier
Wed, Apr 15 - Mon, Apr 20
Multiple Airlines Logo
11:07 am - 12:36 am
ORD
-
IAD
12h 29m
1 stop
Multiple Airlines Logo
6:19 pm - 9:36 am
IAD
-
ORD
16h 17m
2 stops
$204Multiple Airlines
Tue, May 5 - Tue, May 5
United Airlines Logo
8:45 am - 11:48 am
ORD
-
IAD
2h 03mnonstop
United Airlines Logo
10:30 pm - 11:44 pm
IAD
-
ORD
2h 14mnonstop
$209United Airlines
Wed, Apr 22 - Fri, Apr 24
Multiple Airlines Logo
11:07 am - 12:36 am
ORD
-
IAD
12h 29m
1 stop
Multiple Airlines Logo
2:58 pm - 11:07 pm
IAD
-
ORD
9h 09m
2 stops
$210Multiple Airlines
Wed, Apr 8 - Tue, Apr 14
Delta Logo
5:59 pm - 10:59 pm
STL
-
IAD
4h 00m
1 stop
Delta Logo
6:00 am - 9:42 am
IAD
-
STL
4h 42m
1 stop
$257Delta
Tue, Apr 21 - Sat, Apr 25
United Airlines Logo
1:55 pm - 7:23 pm
MLI
-
IAD
4h 28m
1 stop
United Airlines Logo
8:20 am - 12:41 pm
IAD
-
MLI
5h 21m
1 stop
$291United Airlines
Tue, May 12 - Wed, May 13
American Airlines Logo
5:39 pm - 11:06 pm
PIA
-
IAD
4h 27m
1 stop
American Airlines Logo
8:11 pm - 11:52 pm
IAD
-
PIA
4h 41m
1 stop
$291American Airlines
Sat, Apr 25 - Tue, Apr 28
American Airlines Logo
12:12 pm - 11:59 pm
PIA
-
IAD
10h 47m
2 stops
American Airlines Logo
5:59 pm - 11:13 pm
IAD
-
PIA
6h 14m
1 stop
$296American Airlines
Thu, Apr 16 - Mon, Apr 20
Delta Logo
5:11 pm - 12:42 am
MLI
-
IAD
6h 31m
1 stop
Delta Logo
5:27 pm - 10:35 pm
IAD
-
MLI
6h 08m
1 stop
$329Delta
Useful Info

Good to know

Low seasonJanuary
Cheapest flight$85
Best time to beat the crowds but there is an average 1% increase in price.
Most popular time to fly and prices are also 4% 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
Oxon Hill
Martinsburg
Owings Mills
Charles Town
Glen Burnie
Greenbelt
Ellicott City
Edgewood
Colonial Beach
Pikesville
Camp Springs
Lutherville Timonium
Hunt Valley
Westminster

Everything you need to know for your flight to Dulles Intl

Information on your arrival and departure airports

Washington Dulles Airport (IAD)