$430+ Cheap flights from St. Louis to Aspen (STL - ASE)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/18. Fares are subject to change and may not be available on all flights or dates of travel.
STL — ASE
Nov 29 — Dec 61
Round-trip
1 adult, Economy
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Find cheap flights from St. Louis to Aspen with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from St. Louis to Aspen
Cheapest
Best
Last-minute
One-way
Cheapest flights from St. Louis to AspenExplore 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 October 30, 2026.
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 October 30, 2026.
This American Airlines deal was found by Cheapflights users on 10/29. 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 11/252:48 pm -
1 stop6h 38m
Wed 12/27:25 am -
1 stop5h 30m
Deal found 10/29![American Airlines logo]()
$458
This United Airlines deal was found by Cheapflights users on 10/29. 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 12/237:18 am -
1 stop6h 00m
Sun 12/2710:35 am -
1 stop5h 33m
Deal found 10/29![United Airlines logo]()
$499
This United Airlines deal was found by Cheapflights users on 10/26. 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 11/254:39 pm -
1 stop4h 54m
Wed 12/21:10 pm -
2 stops7h 13m
Deal found 10/26![United Airlines logo]()
$500
This United Airlines deal was found by Cheapflights users on 10/30. 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.
Thu 12/243:00 pm -
2 stops7h 31m
Sun 12/2710:35 am -
1 stop5h 33m
Deal found 10/30![United Airlines logo]()
$504
This United Airlines deal was found by Cheapflights users on 10/26. 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 11/101:40 pm -
1 stop5h 47m
Sat 11/1411:54 am -
1 stop6h 29m
Deal found 10/26![United Airlines logo]()
$527
This American Airlines deal was found by Cheapflights users on 10/29. 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 12/239:15 am -
1 stop6h 59m
Sun 12/274:50 pm -
1 stop6h 26m
Deal found 10/29![American Airlines logo]()
$549
Best flights from St. Louis to AspenDiscover carefully curated flight deals from St. Louis to Aspen that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 30, 2026.
Discover carefully curated flight deals from St. Louis to Aspen that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 30, 2026.
This American Airlines deal was found by Cheapflights users on 10/25. 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 11/305:00 am -
1 stop8h 27m
Mon 12/71:00 pm -
1 stop6h 27m
Deal found 10/25![American Airlines logo]()
$468
This United Airlines deal was found by Cheapflights users on 10/28. 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 12/236:09 pm -
1 stop4h 22m
Sun 12/279:30 am -
1 stop6h 30m
Deal found 10/28![United Airlines logo]()
$499
This United Airlines deal was found by Cheapflights users on 10/26. 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 11/101:40 pm -
1 stop5h 47m
Sat 11/1411:54 am -
1 stop6h 29m
Deal found 10/26![United Airlines logo]()
$527
This United Airlines deal was found by Cheapflights users on 10/26. 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 11/108:50 am -
1 stop4h 58m
Wed 11/118:45 am -
1 stop7h 12m
Deal found 10/26![United Airlines logo]()
$625
Last-minute flights from St. Louis to AspenDiscover last-minute flight deals from St. Louis to Aspen. Data last updated October 30, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Aspen. Data last updated October 30, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 10/26. 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 11/101:40 pm -
1 stop5h 47m
Sat 11/1411:54 am -
1 stop6h 29m
Deal found 10/26![United Airlines logo]()
$527
This United Airlines deal was found by Cheapflights users on 10/29. 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 11/108:50 am -
1 stop4h 58m
Wed 11/118:45 am -
1 stop7h 12m
Deal found 10/29![United Airlines logo]()
$625
This American Airlines deal was found by Cheapflights users on 10/29. 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 11/252:48 pm -
1 stop6h 38m
Wed 12/27:25 am -
1 stop5h 30m
Deal found 10/29![American Airlines logo]()
$458
This United Airlines deal was found by Cheapflights users on 10/26. 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 11/254:39 pm -
1 stop4h 54m
Wed 12/21:10 pm -
2 stops7h 13m
Deal found 10/26![United Airlines logo]()
$500
This American Airlines deal was found by Cheapflights users on 10/25. 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 11/305:00 am -
1 stop8h 27m
Mon 12/71:00 pm -
1 stop6h 27m
Deal found 10/25![American Airlines logo]()
$468
One-way flights from St. Louis to AspenSearch for one-way flight options from St. Louis to Aspen. Find affordable one-way fares based on user searches. Data last updated October 30, 2026.
Search for one-way flight options from St. Louis to Aspen. Find affordable one-way fares based on user searches. Data last updated October 30, 2026.
This American Airlines deal was found by Cheapflights users on 10/30. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/189:15 am -
1 stop6h 59m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/30![American Airlines logo]()
$430
This United Airlines deal was found by Cheapflights users on 10/30. 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 12/189:35 am -
2 stops7h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/30![United Airlines logo]()
$485
This Expedia deal was found by Cheapflights users on 10/30. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/1810:20 am -
3 stops27h 46m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/30![Alaska Airlines logo]()
$834
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 October 30, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $458 (American Airlines) |
One-way from | $430 (American Airlines) |
Popular in | July |
Cheapest in | May |
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 7,457,451 searches. Data last updated October 30, 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
Cheapest round-trip
Quickest round-trip
St. LouisAspen
STL Lambert-St Louis - ASE Aspen Pitkin County
STLASE
Lambert-St Louis
Fri 12/18
9:15 am-3:14 pm
1 stop6h 59m
Aspen Pitkin County
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$430
St. LouisAspen
STL Lambert-St Louis - ASE Aspen Pitkin County
STLASE
Lambert-St Louis
Mon 11/30
5:00 am-12:27 pm
1 stop8h 27m
Aspen Pitkin County
Mon 12/7
1:00 pm-8:27 pm
1 stop6h 27m
$468
St. LouisAspen
STL Lambert-St Louis - ASE Aspen Pitkin County
STLASE
Lambert-St Louis
Fri 12/18
9:35 am-4:30 pm
2 stops7h 55m
Aspen Pitkin County
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$485
St. LouisAspen
STL Lambert-St Louis - ASE Aspen Pitkin County
STLASE
Lambert-St Louis
Wed 12/23
6:09 pm-9:31 pm
1 stop4h 22m
Aspen Pitkin County
Sun 12/27
9:30 am-5:00 pm
1 stop6h 30m
$499
St. LouisAspen
STL Lambert-St Louis - ASE Aspen Pitkin County
STLASE
Lambert-St Louis
Tue 11/10
1:40 pm-6:27 pm
1 stop5h 47m
Aspen Pitkin County
Sat 11/14
11:54 am-7:23 pm
1 stop6h 29m
$527
St. LouisAspen
STL Lambert-St Louis - ASE Aspen Pitkin County
STLASE
Lambert-St Louis
Tue 11/10
8:50 am-12:48 pm
1 stop4h 58m
Aspen Pitkin County
Wed 11/11
8:45 am-4:57 pm
1 stop7h 12m
$625
St. LouisAspen
STL Lambert-St Louis - ASE Aspen Pitkin County
STLASE
Lambert-St Louis
Fri 12/18
10:20 am-1:06 pm
3 stops27h 46m
Aspen Pitkin County
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$834
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 October.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*3 stars |
- 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.
STL-ASE
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.
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 October 30, 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.
Boarding
7.7
Food
6.7
Comfort
7.3
Crew
8.1
Entertainment
7.1
Overall
7.3
Reviews
1 / 20
2.0
MediocreDawn,Aug 2026
ORD - DEN
Boarding
7.7
Food
6.7
Comfort
7.3
Crew
8.1
Entertainment
7.1
Overall
7.3
Reviews
1 / 20
2.0
MediocreDawn,Aug 2026
ORD - DEN
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.
Traveling to a place near Aspen?
Book flights to Aspen if you plan to visit one of these locationsSnowmass Village
Leadville
Snowmass
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Explore flights to Aspen departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on October 30, 2026.
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St. Louis and Aspen flights
Browse other St. Louis and Aspen flight options. Last updated on October 30, 2026.
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Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
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 7,457,451 searches. Data last updated October 30, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$293 | Average$460 | FlexibilityNo cancel fee | On-time69% |