IAD - ASE

$251 Find Cheap Flights from Washington Dulles Airport to Aspen

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Dulles Intl to Aspen departing on 12/7. 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

KAYAK searches hundreds of travel sites at once for deals on flights to Aspen

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Aspen, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Aspen, as well as popular online travel agencies
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 22% 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.

Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Dulles Intl to Aspen (IAD-ASE)

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

Wed, Oct 22 - Tue, Oct 28
Delta Logo
6:00 am - 11:10 amIAD-ASE
7h 10m1 stop
Delta Logo
7:21 am - 4:57 pmASE-IAD
7h 36m1 stop
$309Delta
Find Deal
Wed, Oct 22 - Tue, Oct 28
American Airlines Logo
8:09 am - 6:59 pmIAD-ASE
12h 50m2 stops
American Airlines Logo
8:00 am - 4:47 pmASE-IAD
6h 47m1 stop
$314American Airlines
Find Deal
Wed, Oct 22 - Tue, Oct 28
American Airlines Logo
8:09 am - 6:59 pmIAD-ASE
12h 50m2 stops
American Airlines Logo
8:00 am - 6:54 pmASE-IAD
8h 54m2 stops
$319American Airlines
Find Deal
Thu, Oct 2 - Mon, Oct 6
United Airlines Logo
5:15 pm - 9:55 pmIAD-ASE
6h 40m1 stop
United Airlines Logo
12:40 pm - 8:55 pmASE-IAD
6h 15m1 stop
$391United Airlines
Find Deal
Sat, Jan 10 - Sat, Jan 17
United Airlines Logo
12:35 pm - 6:39 pmIAD-ASE
8h 04m1 stop
United Airlines Logo
1:15 pm - 11:22 pmASE-IAD
8h 07m1 stop
$424United Airlines
Find Deal
Wed, Dec 3 - Mon, Dec 8
American Airlines Logo
6:00 am - 11:49 amIAD-ASE
7h 49m1 stop
American Airlines Logo
7:33 am - 4:18 pmASE-IAD
6h 45m1 stop
$429American Airlines
Find Deal
Sat, Sep 27 - Sat, Oct 4
American Airlines Logo
11:47 am - 4:10 pmIAD-ASE
6h 23m1 stop
American Airlines Logo
12:16 pm - 10:48 pmASE-IAD
8h 32m1 stop
$454American Airlines
Find Deal
Mon, Nov 3 - Fri, Nov 7
United Airlines Logo
8:25 am - 12:29 pmIAD-ASE
6h 04m1 stop
United Airlines Logo
5:12 pm - 1:18 pmASE-IAD
18h 06m1 stop
$472United Airlines
Find Deal
Sat, Feb 21 - Wed, Feb 25
United Airlines Logo
2:12 pm - 8:11 pmIAD-ASE
7h 59m1 stop
United Airlines Logo
1:00 pm - 9:10 pmASE-IAD
6h 10m1 stop
$474United Airlines
Find Deal
Sat, Jan 10 - Sat, Jan 17
Delta Logo
6:10 am - 2:19 pmIAD-ASE
10h 09m2 stops
Delta Logo
1:50 pm - 11:17 pmASE-IAD
7h 27m1 stop
$802Delta
Find Deal

Everything you should know

Top airlines
Delta
Cheapest • from $309 (round-trip)
United Airlines
Best reviews • 7.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Cheapest round-trip
$309
Delta
Wed 10/22Tue 10/28
IAD - ASE • 1 stop
Cheapest one-way
$251
United Airlines
Sun 12/7
IAD - ASE • 1 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 Aspen!
Booking Insights

KAYAK's insights & trends for Dulles Intl to Aspen flights

Get data-powered insights and trends into flights from Dulles Intl to Aspen to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Washington Dulles Airport to Aspen?

The average price of all round-trip flights from Washington, D.C. Dulles Intl Airport to Aspen clicked on KAYAK for each day over the last 12 months.

For Washington Dulles Airport to Aspen, Sunday is the cheapest day to fly on average and Thursday is the most expensive. Flying from Aspen back to Washington Dulles Airport, the best deals are generally found on Saturday, with Thursday being the most expensive.

Find deals

Good to know

Low seasonAugust
Cheapest flight$251
Best time to beat the crowds with an average 44% drop in price.
Most popular time to fly and prices are also 3% lower on average.
Flight from Washington Dulles Airport to Aspen

When to book flights from Dulles Intl to Aspen

Are your dates flexible? Find out the best times to travel from Dulles Intl to Aspen based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Washington Dulles Airport to Aspen flights

  • What is the cheapest flight from Washington, D.C. Dulles Intl Airport to Aspen?

    In the last 3 days, the lowest price for a flight from Washington, D.C. Dulles Intl Airport to Aspen was $251 for a one-way ticket and $309 for a round-trip.

  • Do I need a passport to fly between Washington Dulles Airport and Aspen?

    No, a passport isn't needed to fly from Washington Dulles Airport to Aspen. However, local authorities might ask for an official ID.

  • Which aircraft models fly most regularly from Washington Dulles Airport to Aspen?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Washington Dulles Airport to Aspen?

    Star Alliance, oneworld, and SkyTeam are the airline alliances operating flights between Washington Dulles Airport and Aspen, with SkyTeam being the most commonly used for this route.

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

    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 Washington Dulles Airport to Aspen.

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

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

    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 Aspen with an airline and back to Washington Dulles Airport with another airline. Booking your flights between Washington Dulles Airport and ASE can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Washington Dulles Airport to Aspen?

    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 Aspen from Washington Dulles Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Dulles Intl to Aspen

 
See real verified KAYAK customer reviews for airlines flying from Washington, D.C. to Aspen. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Dulles Intl to Aspen? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
United AirlinesOverall score based on 8929 reviews
6.6Food
7.7Boarding
7.3Comfort
8.1Crew
7.1Entertainment
Airline reviews

Great service on board. Boarding a bit slow due to process. Food was pretty average.

8.0 ExcellentTim, Aug 2025IAD - MUC
Read more United Airlines reviews

Great service on board. Boarding a bit slow due to process. Food was pretty average.

Very small cramped plane for an international flight. Everything else was good, but it was maybe the smallest comfort-wise I've ever been on for longer than 3-4 hours and the trip was 7.5

I understand stuff happens, but plane failures are likely due to lack of maintenance. Additionally, air conditioning wasn't working, no snack/drink service, no WiFi. Fortunately, the crew was communicative and light-hearted. United grabbed another plane and we were able to get to our destination.

Had to cancel first flight because Airporter Bus took over 3 hrs to get to airport which resulted in an extra $378 dollar fare . Is there anyway I can be reimbursed for initial fare since it was not my fault? Sent from my iPhone EJ Ledet

Flight was delayed 3 hours. No food and drink vouchers was provided. They offered a mini pretzel bag and water .

Staff was rude. Didn’t give water for 2 hours. Worst service

Was on time until within 1 hour of flight-how does that happen? Staff very friendly.

I liked the choice of lemon ginger tea. I think stewardesses can be more considerate of older people needs.

We were given vouchers we couldn’t use with a 5.5 hour delay

I fly UAL 7-8 times per year. This flight was not up to snuff because it boarded very late "due to unexpected delays in restocking the plane" and yet Flight Aware showed the plane had landed some 10 hours earlier--so I think they could have planned accordingly. The FA's were nice but harried. The video system had to be rebooted 3-4 times. The food service was rather abrupt; they forgot my row and when I asked for my meal, they brought it with some impatience. Overall, the flight was fine, but the little details made it feel somewhat mundane and hurried.

Everything you need to know for your flight from Dulles Intl to Aspen

Information on your arrival and departure airports

Washington Dulles Airport (IAD)
Aspen (ASE)

Not what you’re looking for? Find thousands of other hotels, flights, car rentals and package deals with KAYAK.