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STL - ASE

Find cheap flights from St. Louis to Aspen from $245

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from St. Louis to Aspen departing on 7/1. 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
0 bags
Thu 6/13
Thu 6/20

Search 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 St. Louis 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 St. Louis to Aspen, as well as popular online travel agencies
In the last 7 days travelers have searched 41,771,603 times on KAYAK, and here is why:

Save 21% or moreCompare multiple travel sites with one search.

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

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

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

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from St. Louis 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 and deals for you by selecting your travel dates.
Choose your dates
12:10 pm - 4:08 pmSTL-ASE
4h 58m1 stop
12:21 pm - 7:58 pmASE-STL
6h 37m1 stop
$432American Airlines
Find Deal
Sat, Sep 28 - Sat, Oct 5
1:42 pm - 6:27 pmSTL-ASE
5h 45m1 stop
11:20 am - 4:29 pmASE-STL
4h 09m1 stop
$489United Airlines
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Wed, Jun 12 - Wed, Jun 19
5:31 pm - 9:37 pmSTL-ASE
5h 06m1 stop
9:00 am - 10:11 pmASE-STL
12h 11m1 stop
$512United Airlines
Find Deal
Tue, Jun 25 - Sun, Jun 30
9:05 am - 12:42 pmSTL-ASE
4h 37m1 stop
9:04 am - 4:36 pmASE-STL
6h 32m1 stop
$519United Airlines
Find Deal
Mon, Sep 16 - Mon, Sep 23
11:09 am - 7:55 pmSTL-ASE
9h 46m2 stops
7:50 am - 12:43 pmASE-STL
3h 53m1 stop
$568United Airlines
Find Deal
Sat, Sep 28 - Sat, Oct 5
1:39 pm - 6:31 pmSTL-ASE
5h 52m1 stop
6:19 pm - 10:07 amASE-STL
14h 48m2 stops
$603United Airlines
Find Deal
Mon, Sep 16 - Mon, Sep 23
4:45 pm - 9:17 pmSTL-ASE
5h 32m1 stop
6:30 pm - 12:17 pmASE-STL
16h 47m2 stops
$632United Airlines
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Tue, Jun 25 - Sun, Jun 30
5:20 pm - 1:49 pmSTL-ASE
21h 29m3 stops
9:04 am - 4:36 pmASE-STL
6h 32m1 stop
$683United Airlines
Find Deal
Mon, Sep 16 - Mon, Sep 23
1:42 pm - 6:27 pmSTL-ASE
5h 45m1 stop
1:55 pm - 10:15 pmASE-STL
7h 20m2 stops
$691United Airlines
Find Deal
Wed, Jun 12 - Wed, Jun 19
5:31 am - 4:08 pmSTL-ASE
11h 37m2 stops
12:23 pm - 11:00 pmASE-STL
9h 37m2 stops
$816American Airlines
Find Deal
Sat, Sep 28 - Sat, Oct 5

Flights from St. Louis to Aspen - Travel Insights & Trends

Get data-powered insights and trends into flights from St. Louis 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 St. Louis to Aspen?

The average price of all flights from St. Louis to Aspen clicked on KAYAK for each day over the last 12 months.
For St. Louis to Aspen, Monday is the cheapest day to fly on average and Thursday is the most expensive. Flying from Aspen back to St. Louis, the best deals are generally found on Monday, with Friday being the most expensive.

Good to know

Low season

June

High season

July

Cheapest flight

$245
Best time to beat the crowds with an average 21% drop in price.
Most popular time to fly with an average 9% increase in price.
Flight from St. Louis to Aspen

When to book flights from St. Louis to Aspen

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

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

    In the last 3 days, the lowest price for a flight from St. Louis to Aspen was $245 for a one-way ticket and $432 for a round-trip.

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

    Even though you are not required to have a passport, keep in mind that an official ID is needed to board the airplane.

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

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

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

    oneworld, and Star Alliance are the airline alliances operating flights between St. Louis and Aspen, with oneworld being the most commonly used for this route.

  • Which is the best airline for flights from St. Louis to Aspen, United Airlines or American Airlines?

    The two airlines most popular with KAYAK users for flights from St. Louis to Aspen are United Airlines and American Airlines. With an average price for the route of $547 and an overall rating of 7.4, United Airlines is the most popular choice. American Airlines is also a great choice for the route, with an average price of $574 and an overall rating of 7.3.

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

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Aspen from St. Louis 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 St. Louis 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 St. Louis with another airline. Booking your flights between St. Louis 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 St. Louis 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 St. Louis up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top airlines flying from St. Louis to Aspen

 
See real verified KAYAK customer reviews for airlines flying from St. Louis 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 St. Louis 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 10980 reviews
7.2Comfort
6.7Food
8.1Crew
7.1Entertainment
7.7Boarding
Airline reviews

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.

4.0 OkayAnonymous, May 2024IAD - DEN
Read more about United Airlines reviews

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.

I paid $380 for my one-way ticket from California to Minnesota. The fair did not include online check-in. I received instructions from their app to check in at a kiosk. At the kiosk, the boarding pass would not print until an actual person came to verify that I had a personal item and not a carry-on item, On the plane, the person next to me was drunk and allowed to continue to order alcohol. United is garbage I’d rather fly spirit.

The plane was dirty and the in seat air wasn't blowing as planes usually do.

Positive: Entertainment via phone on the short was great and my first time. Good food and wine and head phones for free. Negative: Seat hardly reclined on the long flight. Breakfast was an egg with a bun. No egg choices and rather have something sweet like bun/jam and Youghurt.

They did get us booked on a later flight, but it made us miss our connecting flight. So, we had to stay and another state overnight with no luggage or clothes. Because they kept our luggage at airport for next flight on the next day.

Flight was on time. Staff were friendly. I paid for Economy Plus but was required to check my standard carry-on luggage due to lack of space on the aircraft. This cost me 30 minutes, unexpectedly, in waiting at the baggage claim. This experience did not meet my expectations.

Crew is way too many times on the intercom re explaining the same thing

Amazing comfortable chairs great snacks super friendly staff pilots did excellent job. Smooth sailing all the way. Definitely be flying United more.

We waited too long to get water while the plane was on the Tarmac awaiting de-icing.

Easy peasy. Crew was great. Take-off and landing nice anc chill (good job by the pilot). Thank you UA!

Liked - nothing. Disliked - delayed 35+ min sitting on the plane. Caused me to miss my connection in Charlotte. American Airlines is the worst US Air Carrier company with atrocious customer service.

Worst situation ever! I booked my tickets for this trip on Alaska Airlines. I guess AA is a partner and we flew nonstop from Eugene to PHX on an AA jet. I had to pay for luggage from PHX to EUG. And this was an Alaska Airlines reservation paid for with Alaska airlines credit card! Got to the PHX airport and was not able to check bags because of some weird issue with the AA software. My reservation had to be the-entered by the agent. I will never pick another American Airlines flight on the Alaska Airlines website. While on vacation, I tried to upgrade our seats for the trip home. The request just buffered and never went through. I tried four times and was charged four times on my credit card. The card was charged but the seats were never changed. What a wreck!

Left from gate 30 minutes before flight. Never been late to a flight ever. It says 15 minutes before explicitly on the ticket.

I like the boarding process, it was fast. The seat doesn’t have a TV for a long flight and food wasn’t served, just snacks.

Use planes with TVs on flights over 4 hours. The free entertainment was a cheap in between solution for a very long flight that you don't even bother providing meals or decent snacks.

Even though we left CMI late, we mostly made up the time.

Delayed almost 4 hours for a 45 minute flight with no explanation.

Again, multiple delays and I eventually just canceled and drove!

Great crew. We were delayed so that late passengers could get on the flight. Love the bedding in business class. Good food. Great experience.

The CX617 from HK to BKK was delayed more than 1.5 hours.

Book cheap flights from St. Louis to Aspen

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from St. Louis to Aspen found on KAYAK in the last 72 hours.
7/1Mon
1 stopAmerican Airlines
5h 40mSTL-ASE
$245
7/1Mon
2 stopsAmerican Airlines
12h 56mSTL-ASE
$308

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St. Louis - Aspen Flights

Departure:

St. Louis (undefined)United States

Destination:

Aspen (ASE)United States

Return flight deals:

Aspen - St. Louis

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