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$199+ 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 11/19. Fares are subject to change and may not be available on all flights or dates of travel.
ASE — STL
Oct 16 — Oct 231
Thu 10/16
Thu 10/23
1 adult, Economy
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Cheap 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 September 16, 2025.

Round-trip from

$329
(American Airlines)

One-way from

$199
(Delta)
From Aspen Pitkin County to Lambert-St Louis
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One-way flight from Aspen Pitkin County to Lambert-St Louis
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Find 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 September 16, 2025.

This American Airlines deal was found by Cheapflights users on 9/15. 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 9/264:49 pmASE - STL
1 stop5h 01mAmerican Airlines
Sat 9/275:18 amSTL - ASE
1 stop5h 36mAmerican Airlines
Deal found 9/15$329
This United Airlines deal was found by Cheapflights users on 9/15. 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 12/113:35 pmASE - STL
1 stop4h 22mUnited Airlines
Sat 12/131:35 pmSTL - ASE
1 stop20h 26mUnited Airlines
Deal found 9/15$384
This United Airlines deal was found by Cheapflights users on 9/15. 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 9/261:30 pmASE - STL
1 stop7h 30mUnited Airlines
Sat 9/2711:10 amSTL - ASE
2 stops9h 54mUnited Airlines
Deal found 9/15$404
This United Airlines deal was found by Cheapflights users on 9/14. 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 9/196:15 pmASE - STL
1 stop4h 38mUnited Airlines
Sat 9/206:35 amSTL - ASE
1 stop5h 51mUnited Airlines
Deal found 9/14$444
This American Airlines deal was found by Cheapflights users on 9/13. 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 12/117:33 amASE - STL
2 stops15h 25mAmerican Airlines
Sat 12/131:20 pmSTL - ASE
1 stop7h 14mAmerican Airlines
Deal found 9/13$526
This American Airlines deal was found by Cheapflights users on 9/14. 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.
Tue 9/1612:14 pmASE - STL
1 stop7h 18mAmerican Airlines
Wed 9/175:18 amSTL - ASE
1 stop5h 36mAmerican Airlines
Deal found 9/14$781
This United Airlines deal was found by Cheapflights users on 9/14. 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 9/166:15 pmASE - STL
1 stop4h 38mUnited Airlines
Wed 9/1711:30 amSTL - ASE
2 stops10h 49mUnited Airlines
Deal found 9/14$786

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 September 16, 2025.
Use the filters below to find and compare flights from Aspen to St. Louis that are best for you.

Fly from

Aspen

Fly to

St. Louis

Route

Depart

Return

Price

AspenSt. Louis

ASE - STL

ASESTL

Aspen Pitkin County

Fri 9/26

4:49 pm-10:50 pm

1 stop5h 01m

Lambert-St Louis

Sat 9/27

5:18 am-9:54 am

1 stop5h 36m

$329

AspenSt. Louis

ASE - STL

ASESTL

Aspen Pitkin County

Thu 12/11

3:35 pm-8:57 pm

1 stop4h 22m

Lambert-St Louis

Sat 12/13

4:37 pm-9:01 am

1 stop17h 24m

$384

AspenSt. Louis

ASE - STL

ASESTL

Aspen Pitkin County

Fri 9/26

10:45 am-10:00 pm

2 stops10h 15m

Lambert-St Louis

Sat 9/27

11:10 am-6:26 pm

2 stops8h 16m

$409

AspenSt. Louis

ASE - STL

ASESTL

Aspen Pitkin County

Thu 12/11

7:33 am-11:58 pm

2 stops15h 25m

Lambert-St Louis

Sat 12/13

1:20 pm-7:34 pm

1 stop7h 14m

$526

AspenSt. Louis

ASE - STL

ASESTL

Aspen Pitkin County

Wed 11/19

1:05 pm-9:58 pm

1 stop7h 53m

$199

AspenSt. Louis

ASE - STL

ASESTL

Aspen Pitkin County

Fri 10/10

6:15 pm-11:58 pm

1 stop4h 43m

$199

AspenSt. Louis

ASE - STL

ASESTL

Aspen Pitkin County

Wed 11/19

8:30 am-11:44 pm

2 stops14h 14m

$260

AspenSt. Louis

ASE - STL

ASESTL

Aspen Pitkin County

Wed 11/19

7:34 am-10:34 pm

2 stops14h 00m

$316

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/15

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.

Cheapflights Insights

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

What is the cheapest month to book a flight from Aspen to St. Louis?

Currently, August is the cheapest month in which you can book a flight from Aspen to St. Louis (average of $311). Flying from Aspen to St. Louis in March is currently the most expensive (average of $356). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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 4h 22m. 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 are the cheapest airlines to fly from Aspen to St. Louis one-way?

    To fly one-way, consider booking your trip with Delta, which is currently one of the cheapest options available, starting at $199. United Airlines flights start at $199 while deals on American Airlines start at $316 one-way.

  • 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.

  • What is the cheapest month to book a flight from Aspen to St. Louis?

    Currently, August is the cheapest month in which you can book a flight from Aspen to St. Louis (average of $311). Flying from Aspen to St. Louis in March is currently the most expensive (average of $356). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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
Fairview Heights
Maryland Heights
Collinsville
Eureka
Glencoe
St. Peters
Chesterfield
Alton
Farmington
Festus

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