IAD

$84 Find Cheap Flights from Colorado 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 3/31. 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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Everything you should know

Cheapest round-trip
$130
Overall average: $347
Frontier
Fri 3/6Wed 3/11
DEN - IAD • 1 stop
Cheapest non-stop
$177
Typical prices: $261-$414
Southwest
Sat 2/28Tue 3/3
DEN - 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 Colorado to Dulles Intl

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

Fri, Mar 6 - Wed, Mar 11
Frontier Logo
11:59 pm - 12:31 am
DEN
-
IAD
22h 32m
1 stop
Frontier Logo
6:20 am - 12:09 pm
IAD
-
DEN
7h 49m
1 stop
$130Frontier
Thu, Feb 19 - Sat, Feb 21
Frontier Logo
6:45 am - 5:57 pm
DEN
-
IAD
9h 12m
1 stop
Frontier Logo
10:29 am - 9:33 pm
IAD
-
DEN
13h 04m
1 stop
$138Frontier
Sat, May 2 - Wed, May 6
United Airlines Logo
7:00 am - 5:32 pm
MTJ
-
IAD
8h 32m
1 stop
United Airlines Logo
2:37 pm - 8:18 pm
IAD
-
MTJ
7h 41m
1 stop
$249United Airlines
Sat, May 2 - Wed, May 6
American Airlines Logo
12:42 pm - 11:59 pm
MTJ
-
IAD
9h 17m
2 stops
American Airlines Logo
7:00 am - 11:58 am
IAD
-
MTJ
6h 58m
1 stop
$254American Airlines
Wed, Feb 18 - Sun, Feb 22
American Airlines Logo
1:23 pm - 10:53 pm
HDN
-
IAD
7h 30m
1 stop
American Airlines Logo
6:00 am - 12:33 pm
IAD
-
HDN
8h 33m
1 stop
$265American Airlines
Sat, Feb 14 - Wed, Feb 18
United Airlines Logo
3:22 pm - 11:18 pm
GJT
-
IAD
5h 56m
1 stop
United Airlines Logo
5:10 pm - 10:21 pm
IAD
-
GJT
7h 11m
1 stop
$299United Airlines
Tue, Apr 7 - Thu, Apr 16
Delta Logo
1:28 pm - 8:46 pm
COS
-
IAD
5h 18m
1 stop
Delta Logo
6:00 am - 12:17 pm
IAD
-
COS
8h 17m
1 stop
$364Delta
Tue, Apr 7 - Sun, Apr 19
Delta Logo
1:28 pm - 8:46 pm
COS
-
IAD
5h 18m
1 stop
Delta Logo
6:00 am - 12:17 pm
IAD
-
COS
8h 17m
1 stop
$369Delta
Sat, Feb 21 - Mon, Mar 2
Southwest Logo
5:15 am - 3:45 pm
COS
-
IAD
8h 30m
1 stop
Southwest Logo
5:40 pm - 9:30 pm
IAD
-
COS
5h 50m
1 stop
$377Southwest
Thu, Mar 12 - Sun, Mar 15
Southwest Logo
5:10 pm - 12:15 am
COS
-
IAD
5h 05m
1 stop
Southwest Logo
5:05 pm - 12:15 am
IAD
-
COS
9h 10m
1 stop
$382Southwest
Useful Info

Good to know

Low seasonJanuary
Cheapest flight$84
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 Denver to Washington Dulles Airport

Flights from Colorado to Dulles Intl: the best tips from KAYAK users

Insights shared by verified travelers who flew the route from Colorado to Dulles Intl 
Learn how KAYAK collects reviews and tips from users.
JasonFlew with United Airlines
DEN
-
IAD
Nov 2024
DIA is a large airport. Get there early.
BindulFlew with United Airlines
DEN
-
IAD
Feb 2024
There are multiple flights between DEN and IAD everyday, including some wide bodies. Try and get on one of the wide bodies whenever possible.

FAQs for booking Colorado to Washington Dulles Airport flights

  • How does KAYAK find such low prices on flights from Colorado 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 Colorado to Washington Dulles Airport.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Colorado 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 Colorado 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 Colorado 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 Colorado with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Colorado 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 Colorado 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)