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Aspen

$174+ Cheap flights from St. Louis to Aspen (STL - ASE)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/21. Fares are subject to change and may not be available on all flights or dates of travel.
STL — ASE
Jul 4 — Jul 111
Sat 7/4
Sat 7/11
1 adult, Economy
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Cheap flight deals from St. Louis to Aspen

Cheapest flights from St. Louis to Aspen
Explore the most affordable flight options available from St. Louis to Aspen. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 4, 2026.

This United Airlines deal was found by Cheapflights users on 5/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/185:10 am
STL
-
ASE
1 stop4h 49m
United Airlines
Tue 9/229:15 am
ASE
-
STL
1 stop6h 19m
United Airlines
Deal found 5/31$329
This United Airlines deal was found by Cheapflights users on 5/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/204:48 pm
STL
-
ASE
1 stop5h 38m
United Airlines
Wed 7/226:12 pm
ASE
-
STL
1 stop4h 45m
United Airlines
Deal found 5/30$347
This United Airlines deal was found by Cheapflights users on 6/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/188:00 am
STL
-
ASE
2 stops7h 23m
United Airlines
Fri 8/213:20 pm
ASE
-
STL
1 stop4h 26m
United Airlines
Deal found 6/3$368
This American Airlines deal was found by Cheapflights users on 6/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/227:04 am
STL
-
ASE
1 stop6h 17m
American Airlines
Thu 6/257:00 am
ASE
-
STL
1 stop6h 02m
American Airlines
Deal found 6/1$455
This United Airlines deal was found by Cheapflights users on 6/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/15:10 am
STL
-
ASE
1 stop4h 36m
United Airlines
Tue 7/76:12 pm
ASE
-
STL
1 stop4h 45m
United Airlines
Deal found 6/1$476
This American Airlines deal was found by Cheapflights users on 6/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/17:03 am
STL
-
ASE
1 stop15h 11m
American Airlines
Tue 7/77:25 am
ASE
-
STL
1 stop15h 51m
American Airlines
Deal found 6/3$589
This United Airlines deal was found by Cheapflights users on 5/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/215:30 pm
STL
-
ASE
1 stop5h 23m
United Airlines
Sun 8/231:15 pm
ASE
-
STL
1 stop6h 31m
United Airlines
Deal found 5/30$606
This United Airlines deal was found by Cheapflights users on 6/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/279:13 am
STL
-
ASE
1 stop6h 08m
United Airlines
Wed 10/281:40 pm
ASE
-
STL
2 stops17h 57m
United Airlines
Deal found 6/1$608

Find flight deals from St. Louis to Aspen

Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Aspen (ASE). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated June 4, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$329
(United Airlines)

One-way from

$174
(United Airlines)

Popular in

February

Cheapest in

May

Average price

$400
Provider with most accurate pricing for Lambert-St Louis-Aspen Pitkin County flight deals.
Search Deals
Provider most trusted by Cheapflights users for Lambert-St Louis-Aspen Pitkin County flights.
Search Deals
From Lambert-St Louis to Aspen Pitkin County
Search Deals
One-way flight from Lambert-St Louis to Aspen Pitkin County
Search Deals
Highest demand for flights based on searches. 17% potential increase in price ($107 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 9% potential price decrease ($42 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from St. Louis to Aspen that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 4, 2026.
Use the filters below to find and compare flights from St. Louis to Aspen that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisAspen

STL - ASE

STLASE

Lambert-St Louis

Tue 8/18

8:36 am-1:50 pm

1 stop6h 14m

Aspen Pitkin County

Fri 8/21

7:30 am-2:42 pm

1 stop6h 12m

$347

St. LouisAspen

STL - ASE

STLASE

Lambert-St Louis

Mon 7/20

4:48 pm-9:26 pm

1 stop5h 38m

Aspen Pitkin County

Wed 7/22

6:12 pm-11:57 pm

1 stop4h 45m

$347

St. LouisAspen

STL - ASE

STLASE

Lambert-St Louis

Tue 8/18

8:00 am-2:23 pm

2 stops7h 23m

Aspen Pitkin County

Fri 8/21

3:20 pm-8:46 pm

1 stop4h 26m

$368
Quickest round-trip

St. LouisAspen

STL - ASE

STLASE

Lambert-St Louis

Wed 7/1

5:10 am-8:46 am

1 stop4h 36m

Aspen Pitkin County

Tue 7/7

6:12 pm-11:57 pm

1 stop4h 45m

$476

St. LouisAspen

STL - ASE

STLASE

Lambert-St Louis

Fri 8/21

5:30 pm-9:53 pm

1 stop5h 23m

Aspen Pitkin County

Sun 8/23

1:15 pm-8:46 pm

1 stop6h 31m

$606

St. LouisAspen

STL - ASE

STLASE

Lambert-St Louis

Mon 6/22

1:38 pm-5:26 pm

1 stop4h 48m

Aspen Pitkin County

Thu 6/25

5:10 pm-11:57 pm

1 stop5h 47m

$627

St. LouisAspen

STL - ASE

STLASE

Lambert-St Louis

Sun 8/2

2:31 pm-9:56 pm

1 stop8h 25m

Aspen Pitkin County

Sun 8/16

7:00 am-11:58 pm

1 stop15h 58m

$719
Cheapest one-way

St. LouisAspen

STL - ASE

STLASE

Lambert-St Louis

Tue 7/21

4:48 pm-9:26 pm

1 stop5h 38m

$174
Quickest one-way

St. LouisAspen

STL - ASE

STLASE

Lambert-St Louis

Thu 8/6

5:10 am-8:46 am

1 stop4h 36m

$239

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/31

Sorted by cheapest first

Compare providers for flights from St. Louis to Aspen

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from St. Louis to Aspen in June.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on St. Louis-Aspen flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on St. Louis-Aspen flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from St. Louis-Aspen flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on St. Louis-Aspen flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for St. Louis-Aspen flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from St. Louis to Aspen

Have a flexible travel schedule? Discover the best time to fly to Aspen from St. Louis with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

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

How much does it cost to fly round-trip from St. Louis to Aspen?

Reviews of airlines servicing Aspen

Get insights into the airlines that provide service to Aspen. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Aspen. Reviews last updated June 4, 2026.
Read through reviews of airlines operating flights from St. Louis to Aspen, such as United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,774 reviews

Food

6.6

Boarding

7.7

Comfort

7.3

Overall

7.4

Crew

8.1

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Dynasty,May 2026

LAX - EWR

The food wasn’t nice - Hosts were not that kind.
United Airlines
7.4
Good
9,774 reviews
United Airlines
7.4
Good
9,774 reviews

Food

6.6

Boarding

7.7

Comfort

7.3

Overall

7.4

Crew

8.1

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Dynasty,May 2026

LAX - EWR

The food wasn’t nice - Hosts were not that kind.

Related info for your journey

Find useful and relevant information for your journey from St. Louis to Aspen. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from St. Louis to Aspen?

    Departing from St. Louis to Aspen will take you 5h 38m. There are 885 mi between St. Louis and Aspen. This flight may include one or multiple stops.

  • What is the cheapest airline to fly from St. Louis to Aspen round-trip?

    Flying on United Airlines is currently your cheapest option to Aspen, with prices starting at $269. United Airlines is currently priced 45% below the average price you’ll pay for this route.

  • Can I find deals for flights from St. Louis to Aspen that include hotel bookings?

    Yes. In addition to deals on St. Louis to Aspen flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from St. Louis to Aspen?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Aspen.

  • Can I find deals for business class flights from St. Louis to Aspen?

    Yes. Cheapflights offers flight deals from St. Louis to Aspen by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Traveling to a place near Aspen?

Book flights to Aspen if you plan to visit one of these locations
Snowmass Village
Leadville
Buena Vista
Snowmass

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Top airline flying from St. Louis to Aspen

Discover the top airline that operate flights from St. Louis to Aspen. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 4, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$269Average$409FlexibilityNo cancel feeOn-time69%

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