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$228+ Cheap flights from Aspen to St. Louis (ASE - STL)

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 7/30. Fares are subject to change and may not be available on all flights or dates of travel.
ASE — STL
Aug 8 — Aug 151
Sat 8/8
Sat 8/15
1 adult, Economy
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Cheap flight deals from Aspen to St. Louis

Cheapest flights from Aspen to St. Louis
Explore the most affordable flight options available from Aspen to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 9, 2026.

This American Airlines deal was found by Cheapflights users on 7/8. 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 8/277:30 am
ASE
-
STL
1 stop6h 15m
American Airlines
Mon 8/315:42 am
STL
-
ASE
1 stop7h 38m
American Airlines
Deal found 7/8$347
This United Airlines deal was found by Cheapflights users on 7/8. 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 8/278:30 am
ASE
-
STL
1 stop7h 04m
United Airlines
Mon 8/318:00 am
STL
-
ASE
2 stops8h 08m
United Airlines
Deal found 7/8$432
This United Airlines deal was found by Cheapflights users on 7/7. 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 10/3111:55 am
ASE
-
STL
1 stop8h 18m
United Airlines
Tue 11/36:00 am
STL
-
ASE
1 stop6h 04m
United Airlines
Deal found 7/7$488
This United Airlines deal was found by Cheapflights users on 7/3. 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.
Wed 11/111:00 pm
ASE
-
STL
2 stops7h 13m
United Airlines
Sat 11/148:33 am
STL
-
ASE
2 stops8h 58m
United Airlines
Deal found 7/3$498
This United Airlines deal was found by Cheapflights users on 7/8. 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 7/112:22 pm
ASE
-
STL
1 stop5h 21m
United Airlines
Tue 7/141:38 pm
STL
-
ASE
1 stop5h 51m
United Airlines
Deal found 7/8$573

Find flight deals from Aspen to St. Louis

Discover tips and strategies to find the most affordable flight options for your journey from Aspen (ASE) to St. Louis (STL). 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 July 9, 2026.

Round-trip from

$347
(American Airlines)

One-way from

$228
(United Airlines)
From Aspen Pitkin County to Lambert-St Louis
Search Deals
One-way flight from Aspen Pitkin County to Lambert-St Louis
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Aspen to St. Louis 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 July 9, 2026.
Use the filters below to find and compare flights from Aspen to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

AspenSt. Louis

ASE - STL

ASESTL

Aspen Pitkin County

Thu 8/27

7:30 am-2:45 pm

1 stop6h 15m

Lambert-St Louis

Mon 8/31

5:42 am-12:20 pm

1 stop7h 38m

$347

AspenSt. Louis

ASE - STL

ASESTL

Aspen Pitkin County

Thu 8/27

8:30 am-4:34 pm

1 stop7h 04m

Lambert-St Louis

Mon 8/31

8:00 am-3:08 pm

2 stops8h 08m

$432

AspenSt. Louis

ASE - STL

ASESTL

Aspen Pitkin County

Sat 10/31

11:55 am-9:13 pm

1 stop8h 18m

Lambert-St Louis

Tue 11/3

6:00 am-11:04 am

1 stop6h 04m

$488
Cheapest one-way
Quickest one-way

AspenSt. Louis

ASE - STL

ASESTL

Aspen Pitkin County

Thu 7/30

6:12 pm-11:57 pm

1 stop4h 45m

$228

AspenSt. Louis

ASE - STL

ASESTL

Aspen Pitkin County

Sat 7/25

5:10 pm-11:47 pm

1 stop5h 37m

$306

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/4

Sorted by cheapest first

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

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Aspen 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.

Reviews of airlines servicing St. Louis

Get insights into the airlines that provide service to St. Louis. 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 St. Louis. Reviews last updated July 9, 2026.
Read reviews from past customers who have flown United Airlines from Aspen to St. Louis. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,955 reviews

Crew

8.1

Overall

7.4

Entertainment

7.1

Food

6.7

Comfort

7.3

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Michelle,Dec 2025

DEN - MKE

I liked that the plane waited 5 minutes for a family whose incoming plane was late. This was the last flight of the day to MKE. Flight attendants actually checked in throughout the flight. Although, not really friendly. Happy to see screens on seat backs again. This is my first time not flying first class in over 10 years. It was economy plus.
United Airlines
7.4
Good
9,955 reviews
United Airlines
7.4
Good
9,955 reviews

Crew

8.1

Overall

7.4

Entertainment

7.1

Food

6.7

Comfort

7.3

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Michelle,Dec 2025

DEN - MKE

I liked that the plane waited 5 minutes for a family whose incoming plane was late. This was the last flight of the day to MKE. Flight attendants actually checked in throughout the flight. Although, not really friendly. Happy to see screens on seat backs again. This is my first time not flying first class in over 10 years. It was economy plus.

Related info for your journey

Find useful and relevant information for your journey from Aspen to St. Louis. 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 Aspen to St. Louis?

    There are many flights that can get you from Aspen to St. Louis in 6h 15m. Fly via American Airlines or United Airlines to get the fastest option. The distance from Aspen to St. Louis is about 885 mi. This flight may include one or multiple stops.

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

    United Airlines, at $269, was found to be the cheapest airline from Aspen to St. Louis..

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Aspen to St. Louis 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 St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
Edwardsville
O'Fallon
Fenton
Swansea
Fairview Heights
Eureka
Maryland Heights
Collinsville
Wentzville
Glencoe
Chesterfield
Alton
Farmington

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Top airline flying from Aspen to St. Louis

Discover the top airline that operate flights from Aspen to St. Louis. 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 July 9, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$269Average$328FlexibilityNo cancel feeOn-time69%

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