ASE - STL

$399 Find Cheap Flights from Aspen to St. Louis

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Aspen to St. Louis departing on 3/23. 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 St. Louis

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Aspen to St. Louis, 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 Aspen to St. Louis, as well as popular online travel agencies
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41.299.237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest round-trip
$399
United Airlines
Wed 4/1Sun 4/5
ASE - STL • 1 stop
Cheapest one-way
$280
American Airlines
Mon 3/23
ASE - STL • 1 stop
Nonstop flights
Not available
There are currently no direct flights between Aspen and St. Louis. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Dallas (DFW)
Cheapest • Avg $228 (round-trip)
Denver (DEN)
Shortest trip • 4h 32m (one-way)
Insights
Insights
Insights
Insights
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to St. Louis!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Aspen to St. Louis (ASE-STL)

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

Wed, Apr 1 - Sun, Apr 5
United Airlines Logo
12:25 pm - 9:13 pm
ASE
-
STL
7h 48m
1 stop
United Airlines Logo
7:45 am - 3:17 pm
STL
-
ASE
8h 32m
1 stop
$399United Airlines
Wed, Apr 1 - Sun, Apr 5
United Airlines Logo
1:25 pm - 8:54 pm
ASE
-
STL
6h 29m
1 stop
United Airlines Logo
9:10 am - 5:30 pm
STL
-
ASE
9h 20m
2 stops
$404United Airlines
Wed, Apr 1 - Sun, Apr 5
United Airlines Logo
11:30 am - 11:11 pm
ASE
-
STL
10h 41m
2 stops
United Airlines Logo
8:21 am - 2:40 pm
STL
-
ASE
7h 19m
2 stops
$409United Airlines
Tue, Mar 31 - Sat, Apr 4
United Airlines Logo
3:29 pm - 8:54 pm
ASE
-
STL
4h 25m
1 stop
United Airlines Logo
1:10 pm - 5:52 pm
STL
-
ASE
5h 42m
1 stop
$453United Airlines
Tue, Mar 31 - Sat, Apr 4
United Airlines Logo
9:15 am - 11:57 pm
ASE
-
STL
13h 42m
2 stops
United Airlines Logo
11:15 am - 5:52 pm
STL
-
ASE
7h 37m
1 stop
$458United Airlines
Tue, Mar 31 - Sat, Apr 4
United Airlines Logo
12:14 pm - 9:08 pm
ASE
-
STL
7h 54m
2 stops
United Airlines Logo
9:16 am - 5:30 pm
STL
-
ASE
9h 14m
2 stops
$575United Airlines
Tue, Mar 31 - Sat, Apr 4
United Airlines Logo
12:14 pm - 9:08 pm
ASE
-
STL
7h 54m
2 stops
United Airlines Logo
7:45 am - 5:30 pm
STL
-
ASE
10h 45m
2 stops
$603United Airlines
Booking Insights

KAYAK's insights & trends for Aspen to St. Louis flights

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

What is the most popular layover airport when flying from Aspen to St. Louis?

Percentage of 1-stop round-trip flights from Aspen to St. Louis chosen by KAYAK users via each layover airport in the last 12 months (only includes trips with the same layover airport on both legs).

Denver (DEN) is the top choice – 80% of KAYAK users who clicked on 1-stop flights from Aspen to St. Louis picked an itinerary connecting there.

What is the cheapest layover airport when flying from Aspen to St. Louis?

Average round-trip price for 1-stop flights from Aspen to St. Louis clicked by KAYAK users in the last 12 months (only includes trips with the same layover airport on both legs).

Flights via Dallas (DFW) offer the most affordable fares, with an average round-trip price of $228.

Which layover airport offers the shortest total travel time from Aspen to St. Louis?

Shortest average total travel time for 1-stop one-way flights from Aspen to St. Louis via different layover airports, based on KAYAK user data from the last 12 months.

Consider flying via Denver (DEN) for the shortest journey. The average one-way travel time for flights connecting there is 4h 32m.

Which layover airport has the quickest connection when flying from Aspen to St. Louis?

Average layover duration at different layover airports for 1-stop one-way flights from Aspen to St. Louis, based on KAYAK user data from the last 12 months.

If you prefer a quick connection, Denver (DEN) often has the shortest layovers from Aspen to St. Louis, with an average of 1h 21m.

Find deals

Good to know

Cheapest flight$280
Flight from Aspen to St. Louis

When to book flights from Aspen to St. Louis

Are your dates flexible? Find out the best times to travel from Aspen to St. Louis 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 flights from Aspen to St. Louis

  • What is the cheapest flight from Aspen to St. Louis?

    In the last 3 days, the lowest price for a flight from Aspen to St. Louis was $280 for a one-way ticket and $399 for a round-trip.

  • Do I need a passport to fly between Aspen and St. Louis?

    No

  • Which airports will I be using when flying from Aspen to St. Louis?

    When flying out of Aspen you will be using Aspen Pitkin County. You will be landing at St. Louis, also known as Lambert-St Louis.

  • Which aircraft models fly most regularly from Aspen to St. Louis?

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

  • Which airline alliances offer flights from Aspen to St. Louis?

    Star Alliance is the only airline alliance operating flights between Aspen and St. Louis.

  • How does KAYAK find such low prices on flights from Aspen to St. Louis?

    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 Aspen to St. Louis.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Aspen to St. Louis?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to St. Louis from Aspen 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 Aspen to St. Louis?

    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 St. Louis with an airline and back to Aspen with another airline. Booking your flights between Aspen and STL 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 Aspen to St. Louis?

    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 St. Louis from Aspen 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 Aspen to St. Louis

 
See real verified KAYAK customer reviews for airlines flying from Aspen to St. Louis. 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 Aspen to St. Louis? 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 9428 reviews
8.1Crew
7.1Entertainment
6.6Food
7.3Comfort
7.7Boarding
Airline reviews

Flight left on time and we arrived 25 minutes early! There was a gate available when we arrived so early on a busy Sunday afternoon! Flight attendants came around twice with the drinks cart.

10.0 ExcellentAnonymous, Feb 2026
DEN - RSW
Read more United Airlines reviews

Flight left on time and we arrived 25 minutes early! There was a gate available when we arrived so early on a busy Sunday afternoon! Flight attendants came around twice with the drinks cart.

Airport terminal was outdated, flight was on a small jet with no wifi

Both of my flights arrived early and check in process was smooth

Sitting on the runway after we land for almost two hours! Not sure if we should blame United or Just Dumpy Vance.

Essy to get on. The hostess gave very little pop, the plane was late getting in, and we are still waiting for our bags. This sucks. :/

Flight was late - I was downgraded from first class to coach

Lately I like the planes have been exceptionally filthy. There’s lines of dust and dirt all across the ceiling in the vents, and the cracks in between the seats are literally full of food. It’s definitely not the quality of service that I was used to with United. I’m also very disappointed with the Wi-Fi! All I wanna do is knock out a few work jobs while I’m trapped in my seat And it spools so bad. They did provide me with a refund, but the process of getting that refund is so complicated. It’s unfortunate.

Excellent flight. Smooth, efficient boarding. Quick flight. Arrived early at STL.

Crew seemed a bit cranky. No seatback screens. But boarding was efficient and on time and we arrived early.

See previous note about the passenger in Denver who threw my husband's bag out of the overhead bin in order to maker room for his own. And the flight attendant back up the new passenger.

Everything you need to know for your flight from Aspen to St. Louis

Information on your arrival and departure airports

Aspen (ASE)
St. Louis (STL)