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$269+ Cheap flights from Aspen to St. Louis (ASE - STL)

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 3/6. Fares are subject to change and may not be available on all flights or dates of travel.
ASE — STL
mars 23 — mars 301
lun. 3/23
lun. 3/30
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 février 21, 2026.

This United Airlines deal was found by Cheapflights users on 2/20. 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.
ven. 3/67:56 am
ASE
-
STL
1 stop5h 47m
United Airlines
lun. 3/95:55 pm
STL
-
ASE
1 stop4h 47m
United Airlines
Deal found 2/20$269
This United Airlines deal was found by Cheapflights users on 2/19. 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.
jeu. 2/2612:22 pm
ASE
-
STL
1 stop7h 04m
United Airlines
lun. 3/26:00 am
STL
-
ASE
1 stop9h 42m
United Airlines
Deal found 2/19$409
This United Airlines deal was found by Cheapflights users on 2/18. 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.
lun. 11/93:30 pm
ASE
-
STL
1 stop4h 29m
United Airlines
jeu. 11/129:13 am
STL
-
ASE
1 stop4h 13m
United Airlines
Deal found 2/18$417
This American Airlines deal was found by Cheapflights users on 2/17. 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.
jeu. 2/1912:39 pm
ASE
-
STL
1 stop5h 50m
American Airlines
lun. 2/237:00 am
STL
-
ASE
1 stop8h 17m
American Airlines
Deal found 2/17$459

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 février 21, 2026.

Round-trip from

$269
(United Airlines)
From Aspen Pitkin County to Lambert-St Louis
Search Deals

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 février 21, 2026.
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

ven. 3/6

7:56 am-2:43 pm

1 stop5h 47m

Lambert-St Louis

lun. 3/9

5:55 pm-9:42 pm

1 stop4h 47m

$269

AspenSt. Louis

ASE - STL

ASESTL

Aspen Pitkin County

mer. 3/11

9:12 am-4:49 pm

1 stop6h 37m

Lambert-St Louis

lun. 3/16

5:55 pm-9:42 pm

1 stop4h 47m

$723

AspenSt. Louis

ASE - STL

ASESTL

Aspen Pitkin County

ven. 3/13

2:27 pm-8:41 pm

1 stop5h 14m

Lambert-St Louis

mer. 3/18

5:00 am-10:06 am

1 stop6h 06m

$723

AspenSt. Louis

ASE - STL

ASESTL

Aspen Pitkin County

ven. 3/13

1:22 pm-8:41 pm

1 stop6h 19m

Lambert-St Louis

mar. 3/17

6:25 am-11:41 am

1 stop6h 16m

$723

AspenSt. Louis

ASE - STL

ASESTL

Aspen Pitkin County

mer. 3/11

6:28 pm-11:34 pm

1 stop4h 06m

Lambert-St Louis

mer. 3/18

5:15 am-9:11 am

1 stop4h 56m

$723

AspenSt. Louis

ASE - STL

ASESTL

Aspen Pitkin County

jeu. 3/12

7:56 am-2:42 pm

1 stop5h 46m

Lambert-St Louis

lun. 3/16

5:15 am-11:20 am

1 stop7h 05m

$723

AspenSt. Louis

ASE - STL

ASESTL

Aspen Pitkin County

jeu. 3/12

7:56 am-2:42 pm

1 stop5h 46m

Lambert-St Louis

mer. 3/18

5:15 am-9:11 am

1 stop4h 56m

$723

AspenSt. Louis

ASE - STL

ASESTL

Aspen Pitkin County

ven. 3/13

12:22 pm-8:41 pm

1 stop7h 19m

Lambert-St Louis

lun. 3/16

5:15 am-9:11 am

1 stop4h 56m

$723

AspenSt. Louis

ASE - STL

ASESTL

Aspen Pitkin County

jeu. 3/12

6:28 pm-11:34 pm

1 stop4h 06m

Lambert-St Louis

mar. 3/17

11:25 am-6:40 pm

2 stops8h 15m

$800

AspenSt. Louis

ASE - STL

ASESTL

Aspen Pitkin County

mer. 3/11

12:20 pm-11:58 pm

2 stops10h 38m

Lambert-St Louis

mer. 3/18

6:00 am-11:40 am

1 stop6h 40m

$1,341

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/18

Showing 1-10 of 17 results
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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, September is the cheapest month in which you can book a flight from Aspen to St. Louis (average of $182). Flying from Aspen to St. Louis in March is currently the most expensive (average of $457). 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 5h 47m. Fly via United Airlines to get the fastest option. The distance from Aspen to St. Louis is about 885 mi.

  • 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, September is the cheapest month in which you can book a flight from Aspen to St. Louis (average of $182). Flying from Aspen to St. Louis in March is currently the most expensive (average of $457). 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
Swansea
Fairview Heights
Maryland Heights
Collinsville
Eureka
Glencoe
Chesterfield
Alton
Farmington
Festus

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