HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
St. Louis

$174+ 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 6/18. Fares are subject to change and may not be available on all flights or dates of travel.
ASE — STL
Jun 16 — Jun 231
Tue 6/16
Tue 6/23
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Aspen to St. Louis 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 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 May 17, 2026.

This American Airlines deal was found by Cheapflights users on 5/13. 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 8/277:00 am
ASE
-
STL
1 stop8h 24m
American Airlines
Mon 8/313:35 pm
STL
-
ASE
1 stop5h 41m
American Airlines
Deal found 5/13$329
This American Airlines deal was found by Cheapflights users on 5/14. 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.
Thu 7/97:25 am
ASE
-
STL
1 stop5h 27m
American Airlines
Sun 7/125:29 am
STL
-
ASE
1 stop5h 32m
American Airlines
Deal found 5/14$338
This United Airlines deal was found by Cheapflights users on 5/12. 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 9/211:25 am
ASE
-
STL
1 stop4h 09m
United Airlines
Sat 9/54:40 pm
STL
-
ASE
1 stop5h 49m
United Airlines
Deal found 5/12$409
This United Airlines deal was found by Cheapflights users on 5/13. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/271:15 pm
ASE
-
STL
1 stop6h 23m
United Airlines
Mon 8/318:00 am
STL
-
ASE
2 stops10h 18m
United Airlines
Deal found 5/13$414
This United Airlines deal was found by Cheapflights users on 5/14. 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.
Thu 6/1811:32 am
ASE
-
STL
2 stops8h 58m
United Airlines
Sun 6/215:10 am
STL
-
ASE
1 stop4h 37m
United Airlines
Deal found 5/14$474
This United Airlines deal was found by Cheapflights users on 5/14. 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.
Thu 7/91:07 pm
ASE
-
STL
2 stops9h 37m
United Airlines
Sun 7/125:10 am
STL
-
ASE
1 stop4h 37m
United Airlines
Deal found 5/14$584
This American Airlines deal was found by Cheapflights users on 5/14. 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.
Fri 5/2911:35 am
ASE
-
STL
2 stops11h 24m
American Airlines
Tue 6/29:28 am
STL
-
ASE
2 stops11h 50m
American Airlines
Deal found 5/14$789
This Expedia deal was found by Cheapflights users on 5/14. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/185:51 pm
ASE
-
STL
3 stops23h 39m
Alaska Airlines
Sun 6/215:03 pm
STL
-
ASE
3 stops25h 18m
Alaska Airlines
Deal found 5/14$1,324

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 May 17, 2026.

Round-trip from

$329
(American Airlines)

One-way from

$174
(United Airlines)
From Aspen Pitkin County to Lambert-St Louis
Search Deals
One-way flight 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 May 17, 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

AspenSt. Louis

ASE - STL

ASESTL

Aspen Pitkin County

Thu 8/27

2:20 pm-10:25 pm

1 stop7h 05m

Lambert-St Louis

Mon 8/31

6:00 am-1:26 pm

1 stop8h 26m

$329
Quickest round-trip

AspenSt. Louis

ASE - STL

ASESTL

Aspen Pitkin County

Thu 7/9

7:25 am-1:52 pm

1 stop5h 27m

Lambert-St Louis

Sun 7/12

5:29 am-10:01 am

1 stop5h 32m

$338

AspenSt. Louis

ASE - STL

ASESTL

Aspen Pitkin County

Wed 9/2

2:15 pm-8:38 pm

1 stop5h 23m

Lambert-St Louis

Sat 9/5

4:40 pm-9:29 pm

1 stop5h 49m

$409

AspenSt. Louis

ASE - STL

ASESTL

Aspen Pitkin County

Thu 8/27

2:15 pm-8:38 pm

1 stop5h 23m

Lambert-St Louis

Mon 8/31

12:59 pm-8:16 pm

2 stops8h 17m

$414
Cheapest one-way

AspenSt. Louis

ASE - STL

ASESTL

Aspen Pitkin County

Thu 6/18

2:22 pm-9:10 pm

1 stop5h 48m

$174

AspenSt. Louis

ASE - STL

ASESTL

Aspen Pitkin County

Thu 6/18

12:51 pm-9:37 pm

1 stop7h 46m

$174
Quickest one-way

AspenSt. Louis

ASE - STL

ASESTL

Aspen Pitkin County

Fri 6/12

6:12 pm-11:57 pm

1 stop4h 45m

$174

AspenSt. Louis

ASE - STL

ASESTL

Aspen Pitkin County

Thu 6/18

5:51 pm-4:37 pm

3 stops21h 46m

$1,000

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/14

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.

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 23m. 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.

  • 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
Maryland Heights
Collinsville
Eureka
Wentzville
Glencoe
Chesterfield
Alton
Farmington
Festus

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.