$253+ 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 10/13. Fares are subject to change and may not be available on all flights or dates of travel.
STL — ASE
Oct 30 — Nov 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
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Best
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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 September 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 September 30, 2026.
This Delta deal was found by Cheapflights users on 9/29. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/216:00 am -
1 stop6h 48m
Wed 11/252:22 pm -
1 stop6h 20m
Deal found 9/29![Delta logo]()
$458
This United Airlines deal was found by Cheapflights users on 9/29. 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 9/29![United Airlines logo]()
$497
This United Airlines deal was found by Cheapflights users on 9/29. 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.
Sat 11/214:39 pm -
1 stop4h 54m
Wed 11/251:30 pm -
2 stops8h 54m
Deal found 9/29![United Airlines logo]()
$504
This United Airlines deal was found by Cheapflights users on 9/29. 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 10/131:36 pm -
1 stop5h 52m
Sat 10/173:20 pm -
1 stop4h 16m
Deal found 9/29![United Airlines logo]()
$517
This American Airlines deal was found by Cheapflights users on 9/29. 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.
Sat 11/72:54 pm -
1 stop6h 23m
Sun 11/812:54 pm -
1 stop8h 05m
Deal found 9/29![American Airlines logo]()
$519
This United Airlines deal was found by Cheapflights users on 9/28. 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.
Thu 10/156:00 am -
1 stop6h 29m
Mon 10/196:05 pm -
1 stop4h 39m
Deal found 9/28![United Airlines logo]()
$524
This United Airlines deal was found by Cheapflights users on 9/25. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/94:39 pm -
1 stop4h 42m
Mon 10/126:05 pm -
1 stop4h 39m
Deal found 9/25![United Airlines logo]()
$529
This United Airlines deal was found by Cheapflights users on 9/26. 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 12/2310:45 am -
1 stop9h 01m
Tue 12/293:18 pm -
1 stop6h 12m
Deal found 9/26![United Airlines logo]()
$557
This United Airlines deal was found by Cheapflights users on 9/26. 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.
Thu 12/245:20 am -
1 stop7h 28m
Wed 12/3011:07 am -
1 stop4h 53m
Deal found 9/26![United Airlines logo]()
$558
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 September 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 September 30, 2026.
This United Airlines deal was found by Cheapflights users on 9/27. 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 9/27![United Airlines logo]()
$497
Last-minute flights from St. Louis to AspenDiscover last-minute flight deals from St. Louis to Aspen. Data last updated September 30, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Aspen. Data last updated September 30, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 9/27. 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 9/305:43 am -
1 stop5h 18m
Fri 10/27:30 am -
1 stop6h 14m
Deal found 9/27![American Airlines logo]()
$583
This United Airlines deal was found by Cheapflights users on 9/27. 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 9/301:29 pm -
2 stops9h 22m
Fri 10/23:20 pm -
1 stop4h 16m
Deal found 9/27![United Airlines logo]()
$615
This United Airlines deal was found by Cheapflights users on 9/27. 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 10/76:15 am -
1 stop6h 47m
Sun 10/112:15 pm -
1 stop5h 21m
Deal found 9/27![United Airlines logo]()
$634
This American Airlines deal was found by Cheapflights users on 9/28. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/97:29 am -
1 stop5h 47m
Fri 10/1612:56 pm -
1 stop8h 03m
Deal found 9/28![American Airlines logo]()
$572
This United Airlines deal was found by Cheapflights users on 9/27. 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 10/99:00 am -
1 stop4h 34m
Tue 10/1312:15 pm -
1 stop8h 06m
Deal found 9/27![United Airlines logo]()
$599
This United Airlines deal was found by Cheapflights users on 9/28. 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.
Fri 10/95:10 am -
1 stop4h 49m
Fri 10/161:15 pm -
2 stops8h 44m
Deal found 9/28![United Airlines logo]()
$604
This United Airlines deal was found by Cheapflights users on 9/29. 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 10/131:36 pm -
1 stop5h 52m
Sat 10/173:20 pm -
1 stop4h 16m
Deal found 9/29![United Airlines logo]()
$517
This United Airlines deal was found by Cheapflights users on 9/28. 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.
Thu 10/156:00 am -
1 stop6h 29m
Mon 10/196:05 pm -
1 stop4h 39m
Deal found 9/28![United Airlines logo]()
$524
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 September 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 September 30, 2026.
This American Airlines deal was found by Cheapflights users on 9/29. 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.
Sun 10/115:40 am -
1 stop7h 46m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/29![American Airlines logo]()
$253
This United Airlines deal was found by Cheapflights users on 9/29. 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 10/133:11 pm -
2 stops7h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/29![United Airlines logo]()
$258
This American Airlines deal was found by Cheapflights users on 9/30. 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.
Thu 2/47:21 am -
1 stop8h 19m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/30![American Airlines logo]()
$272
This American Airlines deal was found by Cheapflights users on 9/27. 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 10/143:20 pm -
1 stop6h 01m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/27![American Airlines logo]()
$331
This United Airlines deal was found by Cheapflights users on 9/26. 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 10/149:04 am -
2 stops12h 17m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/26![United Airlines logo]()
$336
This United Airlines deal was found by Cheapflights users on 9/29. 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.
Sun 10/116:00 am -
2 stops12h 18m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/29![United Airlines logo]()
$375
This United Airlines deal was found by Cheapflights users on 9/30. 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 2/46:15 am -
2 stops15h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/30![United Airlines logo]()
$551
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 September 30, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $458 (Delta) |
One-way from | $253 (American Airlines) |
Popular in | July |
Cheapest in | May |
Average price | $563 |
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 September 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
Tue 10/13
9:00 am-12:34 pm
1 stop4h 34m
Aspen Pitkin County
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$253
St. LouisAspen
STL Lambert-St Louis - ASE Aspen Pitkin County
STLASE
Lambert-St Louis
Mon 10/12
6:00 am-11:29 am
1 stop6h 29m
Aspen Pitkin County
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$253
St. LouisAspen
STL Lambert-St Louis - ASE Aspen Pitkin County
STLASE
Lambert-St Louis
Thu 2/4
7:21 am-2:40 pm
1 stop8h 19m
Aspen Pitkin County
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$272
St. LouisAspen
STL Lambert-St Louis - ASE Aspen Pitkin County
STLASE
Lambert-St Louis
Wed 10/14
3:20 pm-8:21 pm
1 stop6h 01m
Aspen Pitkin County
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$331
St. LouisAspen
STL Lambert-St Louis - ASE Aspen Pitkin County
STLASE
Lambert-St Louis
Sat 10/10
8:00 am-5:18 pm
2 stops10h 18m
Aspen Pitkin County
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$336
St. LouisAspen
STL Lambert-St Louis - ASE Aspen Pitkin County
STLASE
Lambert-St Louis
Wed 10/14
9:04 am-8:21 pm
2 stops12h 17m
Aspen Pitkin County
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$336
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
$497
St. LouisAspen
STL Lambert-St Louis - ASE Aspen Pitkin County
STLASE
Lambert-St Louis
Thu 2/4
6:15 am-8:15 pm
2 stops15h 00m
Aspen Pitkin County
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$551
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 September.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 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 September 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.
Entertainment
7.1
Boarding
7.7
Crew
8.1
Food
6.7
Comfort
7.3
Overall
7.4
Reviews
1 / 20
2.0
MediocreDawn,Aug 2026
ORD - DEN
Entertainment
7.1
Boarding
7.7
Crew
8.1
Food
6.7
Comfort
7.3
Overall
7.4
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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Other flights to Aspen
Explore flights to Aspen departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on September 30, 2026.
Complete your trip
Complete your trip to Aspen by adding a car rental and/or hotel reservation to your travel itinerary.
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St. Louis and Aspen flights
Browse other St. Louis and Aspen flight options. Last updated on September 30, 2026.
Other flights from St. Louis
Browse through other flights departing from St. Louis. Flights are based on user searches made on Cheapflights and were last updated on September 30, 2026.
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 September 30, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$293 | Average$463 | FlexibilityNo cancel fee | On-time69% |