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Cheap flights from Aspen to St. Louis from $357

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Aspen to St. Louis departing on 8/27. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Aspen to St. Louis

Cheap round-trip flights

Enter your travel dates to find the best prices.
American Airlines Logo
7:30 am - 2:45 pm
ASE
-
STL
6h 15m
1 stop
American Airlines Logo
5:42 am - 12:20 pm
STL
-
ASE
7h 38m
1 stop
$357American Airlines
Thu, Aug 27 - Mon, Aug 31
United Airlines Logo
3:20 pm - 11:31 pm
ASE
-
STL
7h 11m
1 stop
United Airlines Logo
3:32 pm - 9:29 pm
STL
-
ASE
6h 57m
2 stops
$442United Airlines
Thu, Aug 27 - Mon, Aug 31
United Airlines Logo
11:25 am - 4:34 pm
ASE
-
STL
4h 09m
1 stop
United Airlines Logo
8:00 am - 5:18 pm
STL
-
ASE
10h 18m
2 stops
$442United Airlines
Thu, Aug 27 - Mon, Aug 31
United Airlines Logo
8:00 pm - 8:57 am
ASE
-
STL
11h 57m
2 stops
United Airlines Logo
6:15 am - 11:55 am
STL
-
ASE
6h 40m
1 stop
$564United Airlines
Sat, Jan 9 - Wed, Jan 13
United Airlines Logo
8:00 pm - 10:41 am
ASE
-
STL
13h 41m
2 stops
United Airlines Logo
6:30 am - 4:31 pm
STL
-
ASE
11h 01m
2 stops
$569United Airlines
Sat, Jan 9 - Wed, Jan 13
United Airlines Logo
10:00 am - 4:26 pm
ASE
-
STL
5h 26m
1 stop
United Airlines Logo
6:15 am - 2:30 pm
STL
-
ASE
9h 15m
1 stop
$571United Airlines
Sat, Jan 9 - Wed, Jan 13

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United Airlines flights from Aspen to St. Louis

Our best United Airlines deals on Aspen to St. Louis flight tickets
United Airlines
Aug 27
ASE11:25 amAspen Pitkin County
4h 09m
1 stop
STL4:34 pmLambert-St Louis
Aug 31
STL8:00 amLambert-St Louis
10h 18m
2 stops
ASE5:18 pmAspen Pitkin County
$442
United Airlines
Jan 9
ASE8:00 pmAspen Pitkin County
11h 57m
2 stops
STL8:57 amLambert-St Louis
Jan 13
STL6:15 amLambert-St Louis
6h 40m
1 stop
ASE11:55 amAspen Pitkin County
$564
United Airlines
Jan 9
ASE8:00 pmAspen Pitkin County
13h 41m
2 stops
STL10:41 amLambert-St Louis
Jan 13
STL6:30 amLambert-St Louis
11h 01m
2 stops
ASE4:31 pmAspen Pitkin County
$569

momondo 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, momondo users made 832,500 searches. Data last updated July 29, 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

$357

AspenSt. Louis

ASE - STL

ASESTL

Aspen Pitkin County

Thu 8/27

3:20 pm-11:31 pm

1 stop7h 11m

Lambert-St Louis

Mon 8/31

3:32 pm-9:29 pm

2 stops6h 57m

$442

AspenSt. Louis

ASE - STL

ASESTL

Aspen Pitkin County

Thu 8/27

11:25 am-4:34 pm

1 stop4h 09m

Lambert-St Louis

Mon 8/31

8:00 am-5:18 pm

2 stops10h 18m

$442

AspenSt. Louis

ASE - STL

ASESTL

Aspen Pitkin County

Sat 1/9

8:00 pm-8:57 am

2 stops11h 57m

Lambert-St Louis

Wed 1/13

6:15 am-11:55 am

1 stop6h 40m

$564

AspenSt. Louis

ASE - STL

ASESTL

Aspen Pitkin County

Sat 1/9

8:00 pm-10:41 am

2 stops13h 41m

Lambert-St Louis

Wed 1/13

6:30 am-4:31 pm

2 stops11h 01m

$569

AspenSt. Louis

ASE - STL

ASESTL

Aspen Pitkin County

Sat 1/9

10:00 am-4:26 pm

1 stop5h 26m

Lambert-St Louis

Wed 1/13

6:15 am-2:30 pm

1 stop9h 15m

$571
Cheapest one-way
Quickest one-way

AspenSt. Louis

ASE - STL

ASESTL

Aspen Pitkin County

Sun 8/23

6:05 pm-11:31 pm

1 stop4h 26m

$359

AspenSt. Louis

ASE - STL

ASESTL

Aspen Pitkin County

Mon 8/24

3:20 pm-8:46 pm

1 stop4h 26m

$388

AspenSt. Louis

ASE - STL

ASESTL

Aspen Pitkin County

Mon 8/24

8:30 am-4:34 pm

1 stop7h 04m

$410

AspenSt. Louis

ASE - STL

ASESTL

Aspen Pitkin County

Mon 8/24

8:30 am-10:00 pm

2 stops12h 30m

$415

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 11 resultsSorted by cheapest first
1
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See travel insights to St. Louis from

How to get the cheapest flight ticket from Aspen to St. Louis

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest airline that flies from Aspen Pitkin County to Lambert-St Louis?

United Airlines is the most popular carrier operating from Aspen Pitkin County to Lambert-St Louis

When to book flights from Aspen to St. Louis

Are you open to changing your travel dates? Check out the ideal times to fly from Aspen to St. Louis according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Aspen to St. Louis (ASE to STL) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Aspen to St. Louis

Fastest flight time

5h 47m

Direct flights

None
The fastest flight from Aspen to St. Louis takes 5h 47m
There are no direct flights from Aspen to St. Louis. There are no popular flight routes from Aspen to St. Louis.
Search flight deals

Frequently asked questions about flying from Aspen to St. Louis

  • How far is Aspen Pitkin County to Lambert-St Louis by plane?

    Aspen Pitkin County and Lambert-St Louis are 892.5 mi apart from one another. Flights usually cover this in 5h 47m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from Aspen Pitkin County Airport to Lambert-St Louis Airport?

    Prices for flights from Aspen Pitkin County Airport to Lambert-St Louis Airport refresh daily.

  • How many operators does momondo search for flights from Aspen Pitkin County Airport to Lambert-St Louis Airport?

  • How old do you have to be to fly from Aspen Pitkin County Airport to Lambert-St Louis Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Aspen Pitkin County Airport to Lambert-St Louis Airport.

  • What documentation or ID do you need to fly to Lambert-St Louis Airport?

    The travel and health documents required for your trip to Lambert-St Louis Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Lambert-St Louis Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular airline from Aspen to St. Louis?

Best airlines flying from Aspen to St. Louis

Compare and see reviews for airlines that fly from Aspen to St. Louis with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $269Free CancellationRating
7.4
10,052 reviews
Search United Airlines flights

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
St. Charles
Chesterfield
Fairview Heights
Hermann
St. Peters
Maryland Heights
Florissant
Collinsville
O'Fallon
Alton
Fenton
Farmington
Clayton
Wentzville
Festus
Eureka
Litchfield
Edwardsville
Grafton
Shrewsbury

Why use momondo?

Why should I use momondo to find a flight deal from Aspen to St. Louis?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to St. Louis from Aspen.

Can I find flights from Aspen to St. Louis with flexible booking policies on momondo?

momondo does allow users to show only those flights to St. Louis from Aspen which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Aspen to St. Louis?

Once you have performed a search for Aspen to St. Louis flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Aspen to St. Louis right now. Can momondo alert me if prices change?

If you are simply researching potential flights to St. Louis, momondo offers a useful price alert feature which will track prices for flights to St. Louis from Aspen and alert you when they change.

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