IAD

$70 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 1/24. 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

Travelers love KAYAK
41.299.237 searches in the past 7 days on KAYAK

Save 24% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Everything you should know

Cheapest round-trip
$157
Overall average: $342
Multiple Airlines
Mon 1/12Mon 1/19
ORD - IAD • 1 stop
Cheapest non-stop
$223
Typical prices: $264-$592
United Airlines
Sat 1/17Sun 1/18
ORD - IAD • Non-stop
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
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

Mon, Jan 12 - Mon, Jan 19
Multiple Airlines Logo
5:50 am - 3:27 pm
ORD
-
IAD
8h 37m1 stop
Multiple Airlines Logo
10:08 pm - 11:22 am
IAD
-
ORD
14h 14m2 stops
$157Multiple Airlines
Thu, Jan 15 - Fri, Jan 16
Frontier Logo
8:19 pm - 1:03 pm
MDW
-
IAD
15h 44m1 stop
Frontier Logo
10:08 pm - 7:27 am
IAD
-
MDW
10h 19m1 stop
$160Frontier
Thu, Jan 15 - Sun, Jan 18
Multiple Airlines Logo
6:57 pm - 1:03 pm
ORD
-
IAD
17h 06m1 stop
Multiple Airlines Logo
6:00 am - 12:08 pm
IAD
-
ORD
7h 08m1 stop
$160Multiple Airlines
Thu, Jan 22 - Mon, Jan 26
Frontier Logo
6:20 am - 4:28 pm
MDW
-
IAD
9h 08m1 stop
Frontier Logo
5:33 pm - 10:19 pm
IAD
-
MDW
5h 46m1 stop
$162Frontier
Wed, Jan 28 - Sat, Jan 31
United Airlines Logo
3:00 pm - 9:17 pm
PIA
-
IAD
5h 17m1 stop
United Airlines Logo
8:20 am - 12:38 pm
IAD
-
PIA
5h 18m1 stop
$251United Airlines
Sat, Jan 10 - Tue, Jan 13
Delta Logo
5:11 pm - 11:37 pm
MLI
-
IAD
5h 26m1 stop
Delta Logo
6:15 pm - 10:33 pm
IAD
-
MLI
5h 18m1 stop
$251Delta
Tue, Jan 13 - Tue, Jan 20
Delta Logo
12:00 pm - 5:17 pm
STL
-
IAD
4h 17m1 stop
Delta Logo
5:26 pm - 8:43 pm
IAD
-
STL
4h 17m1 stop
$251Delta
Thu, Jan 15 - Mon, Jan 19
United Airlines Logo
10:47 am - 4:00 pm
MLI
-
IAD
4h 13m1 stop
United Airlines Logo
5:17 pm - 9:36 pm
IAD
-
MLI
5h 19m1 stop
$253United Airlines
Tue, Jan 13 - Tue, Jan 20
American Airlines Logo
10:17 am - 5:16 pm
STL
-
IAD
5h 59m1 stop
American Airlines Logo
11:34 am - 3:04 pm
IAD
-
STL
4h 30m1 stop
$255American Airlines
Wed, Jan 28 - Sat, Jan 31
American Airlines Logo
6:00 am - 12:36 pm
PIA
-
IAD
5h 36m1 stop
American Airlines Logo
1:08 pm - 9:43 pm
IAD
-
PIA
9h 35m2 stops
$256American Airlines
Useful Info

Good to know

Low seasonFebruary
Cheapest flight$70
Best time to beat the crowds with an average 3% drop in price.
Most popular time to fly and prices are also 3% 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
Ellicott City
Greenbelt
Edgewood
Colonial Beach
Pikesville
Hunt Valley
Lutherville Timonium
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)