STL - ASE

$314 Find Cheap Flights from St. Louis 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 St. Louis to Aspen departing on 12/12. 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.
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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 47,946,175 times on KAYAK, and here is why:

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

 
These are the cheapest deals for flights from St. Louis to Aspen currently on KAYAK along with options from the most popular airlines KAYAK users selected for this route. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.

Recent round-trip flight deals from St. Louis to Aspen

Recommended round-trip deals departing in the coming months from the most popular airlines that fly from St. Louis to Aspen.

Recent one-way flight deals from St. Louis to Aspen

Only flying one-way? Below are some of the best one-way flight deals from St. Louis to Aspen found on KAYAK recently.

Recent last minute flight deals from St. Louis to Aspen

Leaving soon but still want a bargain? Check out these latest deals for last minute flights from St. Louis to Aspen.

Recent direct flight deals from St. Louis to Aspen

The latest deals for direct flights from St. Louis to Aspen so you can sit back and relax without the need for a layover.

Cheap bus & train deals from St. Louis to Aspen

Find recent round-trip train or bus tickets from St. Louis to Aspen.

All round-trip flight deals to Aspen

The cheapest plane tickets to Aspen found on KAYAK recently.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
4:31 pm - 9:29 pmSTL-ASE
5h 58m1 stop
10:38 am - 4:28 pmASE-STL
4h 50m1 stop
$378United Airlines
Find Deal
Wed, Dec 18 - Mon, Dec 30
11:41 am - 4:01 pmSTL-ASE
5h 20m1 stop
8:08 am - 4:23 pmASE-STL
7h 15m1 stop
$388American Airlines
Find Deal
Sat, Jan 25 - Wed, Jan 29
5:45 am - 12:04 pmSTL-ASE
7h 19m1 stop
11:42 am - 10:36 pmASE-STL
9h 54m2 stops
$393American Airlines
Find Deal
Sat, Jan 25 - Wed, Jan 29
4:31 pm - 8:11 pmSTL-ASE
4h 40m1 stop
11:27 am - 4:29 pmASE-STL
4h 02m1 stop
$448United Airlines
Find Deal
Mon, Dec 9 - Sat, Dec 14
11:20 am - 6:04 pmSTL-ASE
7h 44m1 stop
1:45 pm - 9:36 pmASE-STL
6h 51m2 stops
$453United Airlines
Find Deal
Mon, Dec 9 - Sat, Dec 14
1:39 pm - 6:33 pmSTL-ASE
5h 54m1 stop
3:00 pm - 8:41 pmASE-STL
4h 41m1 stop
$458United Airlines
Find Deal
Sat, Dec 7 - Sun, Dec 15
1:10 pm - 9:29 pmSTL-ASE
9h 19m2 stops
9:00 am - 4:29 pmASE-STL
6h 29m1 stop
$463United Airlines
Find Deal
Sat, Dec 7 - Sun, Dec 15
11:20 am - 8:11 pmSTL-ASE
9h 51m2 stops
1:45 pm - 9:36 pmASE-STL
6h 51m2 stops
$468United Airlines
Find Deal
Sat, Dec 7 - Sat, Dec 14
6:00 am - 11:49 amSTL-ASE
6h 49m1 stop
1:41 pm - 9:35 amASE-STL
18h 54m2 stops
$533Delta
Find Deal
Mon, Dec 9 - Fri, Dec 13
6:00 am - 11:49 amSTL-ASE
6h 49m1 stop
1:41 pm - 11:43 pmASE-STL
9h 02m1 stop
$618Delta
Find Deal
Mon, Dec 9 - Thu, Dec 12
5:05 am - 10:15 amSTL-ASE
6h 10m1 stop
$314American Airlines
Find Deal
Thu, Dec 12
5:05 am - 10:15 amSTL-ASE
6h 10m1 stop
$344American Airlines
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Thu, Dec 12
6:15 am - 2:16 pmSTL-ASE
9h 01m1 stop
$384United Airlines
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Fri, Dec 6
7:00 am - 9:29 pmSTL-ASE
15h 29m3 stops
$394United Airlines
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Sat, Dec 7
10:10 am - 6:33 pmSTL-ASE
9h 23m2 stops
$416United Airlines
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Wed, Dec 4
7:00 am - 9:29 pmSTL-ASE
15h 29m3 stops
$421United Airlines
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Wed, Dec 4
5:40 pm - 11:23 amSTL-ASE
18h 43m2 stops
$433United Airlines
Find Deal
Thu, Dec 12
7:00 am - 8:11 pmSTL-ASE
14h 11m3 stops
$569United Airlines
Find Deal
Thu, Dec 12
5:59 pm - 9:14 amSTL-ASE
16h 15m2 stops
$678United Airlines
Find Deal
Thu, Dec 26
4:43 pm - 9:46 amSTL-ASE
18h 03m1 stop
$688United Airlines
Find Deal
Thu, Dec 26
6:00 am - 11:48 amSTL-ASE
6h 48m1 stop
1:30 pm - 8:32 pmASE-STL
6h 02m1 stop
$528Delta
Find Deal
Thu, Nov 21 - Mon, Nov 25
6:15 am - 2:09 pmSTL-ASE
8h 54m1 stop
3:30 pm - 8:45 pmASE-STL
4h 15m1 stop
$563United Airlines
Find Deal
Sat, Nov 23 - Wed, Nov 27
6:30 am - 4:38 pmSTL-ASE
11h 08m2 stops
1:40 pm - 8:57 pmASE-STL
6h 17m1 stop
$568United Airlines
Find Deal
Thu, Nov 21 - Tue, Nov 26
6:30 am - 2:38 pmSTL-ASE
9h 08m2 stops
9:05 am - 5:15 pmASE-STL
7h 10m2 stops
$573United Airlines
Find Deal
Thu, Nov 21 - Mon, Nov 25
6:00 am - 11:48 amSTL-ASE
6h 48m1 stop
1:30 pm - 8:32 pmASE-STL
6h 02m1 stop
$588Delta
Find Deal
Thu, Nov 21 - Sat, Nov 23
8:40 am - 2:38 pmSTL-ASE
6h 58m1 stop
5:19 pm - 12:43 pmASE-STL
18h 24m1 stop
$742United Airlines
Find Deal
Sun, Nov 24 - Wed, Nov 27
6:00 am - 11:48 amSTL-ASE
6h 48m1 stop
1:30 pm - 8:32 pmASE-STL
6h 02m1 stop
$818Delta
Find Deal
Sun, Nov 24 - Mon, Nov 25
4:44 pm - 8:04 pmSTL-ASE
4h 20m1 stop
3:30 pm - 8:45 pmASE-STL
4h 15m1 stop
$828United Airlines
Find Deal
Sun, Nov 24 - Tue, Nov 26
8:40 am - 12:34 pmSTL-ASE
4h 54m1 stop
3:30 pm - 8:45 pmASE-STL
4h 15m1 stop
$881United Airlines
Find Deal
Sat, Nov 23 - Sat, Nov 23
5:45 am - 1:48 pmSTL-ASE
9h 03m2 stops
2:24 pm - 9:29 amASE-STL
18h 05m2 stops
$1,178American Airlines
Find Deal
Sat, Nov 23 - Mon, Nov 25

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, Tuesday 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

November

High season

August

Cheapest flight

$314
Best time to beat the crowds with an average 32% drop in price.
Most popular time to fly and prices are also 24% lower on average.
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 $314 for a one-way ticket and $378 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, Star Alliance, and SkyTeam are the airline alliances operating flights between St. Louis and Aspen, with SkyTeam 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 $559 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 $545 and an overall rating of 7.2.

  • 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 9168 reviews
7.1Entertainment
8.1Crew
7.3Comfort
7.7Boarding
6.7Food
Airline reviews

It was a good flight. Nothing comes to mind about how it could have been better. It was a newer plane, seemed like a great upgrade from your older ones. Staff was very good as well.

10.0 ExcellentJason, Nov 2024MSO - DEN
Read more United Airlines reviews

It was a good flight. Nothing comes to mind about how it could have been better. It was a newer plane, seemed like a great upgrade from your older ones. Staff was very good as well.

The food for long haul was poor compared to Singapore airlines economy. Pasta plain with tomato sauce . Singapore airlines give me Hagen dash small ice cream cup it was great. The choices of dinner course Singapore air also much better The crew mostly friendly. The economy seat are as expected.

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.

Flight was 3 1/2 hour delayed with no credit or meal vouchers

late departure due to some unspecified issue with ventilating the cabin. They got it running but it was FREEZING for the whole flight. I asked for a blanket but they didn't provide one. They could not turn up the heat. it was quite miserable.

Liked that we left on time for each flight. Snacks not the best, but we're okay.

It was fine. The flight attendant appeared to be in a bad mood but everything was fine.

The entertainment would not work. The comfort of the seats leaves something to be desired, pretty uncomfortable.

Pleasant service from the crew. Arrived early. Efficient boarding and deplaning. Great job!

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.

The departing flight from Newark to Charlotte was fine. It was the returning flight from Charlotte to Newark that was awful. We had scheduled an 8:35pm return flight time. We got delayed TEN times all the way to 5am in the morning! We were told over 4 different excuses as to why the flight kept getting delayed. First it was the flight crew needed to rest, then it was something technical with the plane, then it was something with air traffic control, and finally it was because they couldn’t find a captain and had to wait until the morning so the captain could get some rest. It was terrible sleeping overnight in the airport. They offered a $12 meal voucher. That was it! And the only place open in the middle of the night was Dunkin’ Donuts who didn’t even accept the voucher. They should have cancelled the flight much earlier on in the evening instead of just stringing us along hour by hour with more delays. Not professional and unacceptable. There was no refund for inconvenience. I probably will not be flying American Airlines again.

This leg they tried and did well with what they had to work from.

It was nice being on a flight that had working wifi. The boarding was quick - why don’t all airlines have small boarding groups window to aisle? Makes so much sense!!! I was disappointed to be the first person stopped to have to gate check my carryon. Especially when there was plenty of overhead space at the back! But I get it…keeps it moving. Crew was nice.

The flight was as good as it gets when flying. On time departure and arrival plus no lost luggage.

My boarding pass wouldn't pull up in the app very easily and had to really dig through my email. That caused a delay in TSA..

Packed commercial flight was as comfortable as can be expected

My seat was very worn. Otherwise I had an excellent flight

I'm not a valued flyer so I'm always in the last group to board...that sucks, always

My flight back my reservations were list because they said I didn't pay my pet fee when I had a receipt

Flight was cancelled as I was in line for security. Next available flight got me to my destination 24 hrs later than the first. No refunds offered, just credit toward another flight. I booked with delta, got to my destination only 2 hrs behind my original flight schedule. Won’t be using American again.

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.
12/12Thu
1 stopAmerican Airlines
6h 10mSTL-ASE
$314
12/12Thu
1 stopAmerican Airlines
6h 10mSTL-ASE
$344
12/6Fri
1 stopUnited Airlines
9h 01mSTL-ASE
$384
12/7Sat
3 stopsUnited Airlines
15h 29mSTL-ASE
$394
12/4Wed
2 stopsUnited Airlines
9h 23mSTL-ASE
$416
12/4Wed
3 stopsUnited Airlines
15h 29mSTL-ASE
$421
12/12Thu
2 stopsUnited Airlines
18h 43mSTL-ASE
$433
12/12Thu
3 stopsUnited Airlines
14h 11mSTL-ASE
$569
12/26Thu
2 stopsUnited Airlines
16h 15mSTL-ASE
$678
12/26Thu
1 stopUnited Airlines
18h 03mSTL-ASE
$688

Search by stops

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Last minute flights from St. Louis to Aspen

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from St. Louis to Aspen that are departing in the next 10 days.
11/21Thu
multi-stopDelta
6h 48mSTL-ASE
11/25Mon
multi-stopDelta
6h 02mASE-STL
$528
11/23Sat
multi-stopUnited Airlines
8h 54mSTL-ASE
11/27Wed
multi-stopUnited Airlines
4h 15mASE-STL
$563
11/21Thu
multi-stopUnited Airlines
11h 08mSTL-ASE
11/26Tue
multi-stopUnited Airlines
6h 17mASE-STL
$568
11/21Thu
multi-stopUnited Airlines
9h 08mSTL-ASE
11/25Mon
multi-stopUnited Airlines
7h 10mASE-STL
$573
11/21Thu
multi-stopDelta
6h 48mSTL-ASE
11/23Sat
multi-stopDelta
6h 02mASE-STL
$588
11/24Sun
multi-stopUnited Airlines
6h 58mSTL-ASE
11/27Wed
multi-stopUnited Airlines
18h 24mASE-STL
$742
11/24Sun
multi-stopDelta
6h 48mSTL-ASE
11/25Mon
multi-stopDelta
6h 02mASE-STL
$818
11/24Sun
multi-stopUnited Airlines
4h 20mSTL-ASE
11/26Tue
multi-stopUnited Airlines
4h 15mASE-STL
$828
11/23Sat
multi-stopUnited Airlines
4h 54mSTL-ASE
11/23Sat
multi-stopUnited Airlines
4h 15mASE-STL
$881
11/23Sat
multi-stopAmerican Airlines
9h 03mSTL-ASE
11/25Mon
multi-stopAmerican Airlines
18h 05mASE-STL
$1,178

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Search by price

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

Information on your arrival and departure airports

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