IAD - ASE

$183 Find Cheap Flights from Washington Dulles Airport to Aspen - 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 from Dulles Intl to Aspen departing on 9/6. 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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Everything you should know

Cheapest round-trip
$365
Typical prices: $511-$625
American Airlines
Tue 8/25Tue 9/1
IAD - ASE • 1 stop
Cheapest one-way
$183
Delta
Sun 9/6
IAD - ASE • 1 stop
Top airlines
American Airlines
Cheapest • from $365 (round-trip)
United Airlines
Best reviews • 7.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Dulles Intl and Aspen. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Houston (IAH)
Cheapest • Avg $480 (round-trip)
Atlanta (ATL)
Shortest trip • 6h 05m (one-way)
Insights
Insights
Insights
Insights
When to travel
May
Cheapest • 100% price drop
March
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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We hope you love your trip to Aspen!
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

Tue, Aug 25 - Tue, Sep 1
American Airlines Logo
2:53 pm - 8:16 pm
IAD
-
ASE
7h 23m
1 stop
American Airlines Logo
7:30 am - 6:27 pm
ASE
-
IAD
8h 57m
1 stop
$365American Airlines
Mon, Aug 24 - Tue, Sep 1
American Airlines Logo
6:09 am - 1:50 pm
IAD
-
ASE
9h 41m
1 stop
American Airlines Logo
7:30 am - 6:27 pm
ASE
-
IAD
8h 57m
1 stop
$365American Airlines
Mon, Aug 24 - Wed, Aug 26
American Airlines Logo
6:09 am - 12:20 pm
IAD
-
ASE
8h 11m
1 stop
American Airlines Logo
7:30 am - 6:27 pm
ASE
-
IAD
8h 57m
1 stop
$365American Airlines
Mon, Oct 5 - Wed, Oct 7
American Airlines Logo
3:08 pm - 8:21 pm
IAD
-
ASE
7h 13m
1 stop
American Airlines Logo
12:56 pm - 11:23 pm
ASE
-
IAD
8h 27m
1 stop
$392American Airlines
Mon, Aug 24 - Wed, Aug 26
American Airlines Logo
6:09 am - 12:20 pm
IAD
-
ASE
8h 11m
1 stop
American Airlines Logo
7:30 am - 6:27 pm
ASE
-
IAD
8h 57m
1 stop
$424American Airlines
Sat, Oct 31 - Wed, Nov 4
American Airlines Logo
3:08 pm - 8:21 pm
IAD
-
ASE
7h 13m
1 stop
American Airlines Logo
12:54 pm - 11:19 pm
ASE
-
IAD
8h 25m
1 stop
$452American Airlines
Fri, Aug 21 - Fri, Aug 28
American Airlines Logo
6:09 am - 12:20 pm
IAD
-
ASE
8h 11m
1 stop
American Airlines Logo
7:30 am - 6:27 pm
ASE
-
IAD
8h 57m
1 stop
$452American Airlines
Wed, Aug 26 - Thu, Aug 27
American Airlines Logo
2:53 pm - 8:16 pm
IAD
-
ASE
7h 23m
1 stop
American Airlines Logo
7:30 am - 5:48 pm
ASE
-
IAD
8h 18m
1 stop
$456American Airlines
Mon, Aug 31 - Wed, Sep 9
United Airlines Logo
1:00 pm - 8:26 pm
IAD
-
ASE
9h 26m
1 stop
United Airlines Logo
7:12 pm - 6:34 am
ASE
-
IAD
9h 22m
1 stop
$464United Airlines
Tue, Sep 8 - Tue, Sep 15
United Airlines Logo
12:45 pm - 6:31 pm
IAD
-
ASE
7h 46m
1 stop
United Airlines Logo
8:05 am - 6:50 pm
ASE
-
IAD
8h 45m
1 stop
$465United Airlines
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.

How much is a round-trip flight from Washington, D.C. Dulles Intl Airport to Aspen?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Washington, D.C. Dulles Intl Airport to Aspen departing in August.

Flight prices are below average for this route right now.

Flights to Aspen from Washington, D.C. Dulles Intl Airport usually cost between $541 and $678 in August.
The lowest price found in the past 5 days was $365 on American Airlines (Aug 24-Sep 1).

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Washington, D.C. Dulles Intl Airport to Aspen, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Washington, D.C. Dulles Intl Airport to Aspen is May, where tickets cost $0 (return) on average. On the other hand, the most expensive months are January and December, where the average cost of round-trip tickets is $1,019 and $845 respectively.

Find deals

Good to know

Low season

February

Cheapest flight

$183
Best time to beat the crowds with an average 28% drop in price.
Most popular time to fly and prices are also 15% 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 5 days, the lowest price for a flight from Washington, D.C. Dulles Intl Airport to Aspen was $183 for a one-way ticket and $365 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 is the only airline alliance operating flights between Washington Dulles Airport and Aspen.

  • 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 10052 reviews
7.7Boarding
7.1Entertainment
7.3Comfort
6.6Food
8.1Crew
Airline reviews

My flight was delayed so bad i missed u it so i just said never mind

2.0 MediocreDanika, Jul 2026
IAD - EWR
Read more United Airlines reviews

My flight was delayed so bad i missed u it so i just said never mind

Delayed 2 hours while stuck on the aircraft. If the luggage was properly loaded the first time we probably wouldn’t have been delayed at all

Onboard staff was courteous, helpful, responsive and friendly. The boarding process was disorganized, poorly communicated, and disheveled. Gate agents were yelling instead of using the PA system, didn’t communicate the timing delay of our flight, and created an atmosphere of chaos rather than order and communication. As far as I know, there was no reason for their. I would hate to see how it operated under extreme conditions. I’ve never seen United Airlines operations in such a state.

The flight did not have its customary snacks during the flight. Apparently they were never loaded on the plane.

Like: departed and arrived on time. Unlike: Food options for purchase allways bad, 1 of 2 of the crew members not very friendly at all. Seats and leg room aweful. At this point I am thinking on switching to AA.

It was a short flight so I was expecting too much

United didn’t even try to hold the flight for me. They knew I had a tight connection and when I arrived at the gate less than 10 mins after final boarding the flight had already gone. The gate agent wasn’t even notified that I was on my way. She was told I wasn’t at the airport

The plane was clean. The staff was excellent. The flight attendants were very good. Enjoyable flight. Overall. The seats in the back are too small but, will always be.

Everything was perfect except the pad at the top of the seat back. It pushes my head forward in a very uncomfortable position and it is not removable.

We ended up with seats in the very back. So they did not recline. Have no idea why, we reserved and checked in very early. The isles were very narrow and the seats had very little leg room. But they did give us water, and a snack.

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)