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

United Airlines and American Airlines are the most popular carriers operating from Lambert-St Louis to Aspen Pitkin County

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

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

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

There is 1 operator available for flights from Lambert-St Louis Airport to Aspen Pitkin County Airport as of May 2026.

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

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Lambert-St Louis Airport to Aspen Pitkin County Airport.

What documentation or ID do you need to fly to Aspen Pitkin County Airport?

The required travel and health documents for your Aspen Pitkin County Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Aspen Pitkin County Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$174 Cheap Flights from St. Louis to Aspen in 2026

1 adult

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Find the cheapest flights from St. Louis to Aspen

Round-trip

One-way

Cheap round-trip flights

Enter your travel dates to find the best prices.

5:10 am - 8:46 am

STL

ASE

4h 36m

1 stop

3:25 pm - 9:10 pm

ASE

STL

4h 45m

1 stop

$329United Airlines

Fri, May 22 - Tue, May 26

6:00 am - 11:04 am

STL

ASE

6h 04m

1 stop

2:17 pm - 8:39 pm

ASE

STL

5h 22m

1 stop

$347United Airlines

Sun, Sep 20 - Wed, Sep 23

6:00 am - 11:21 am

STL

ASE

6h 21m

1 stop

8:05 am - 3:57 pm

ASE

STL

6h 52m

1 stop

$373Delta

Sun, Sep 20 - Wed, Sep 23

6:00 am - 11:01 am

STL

ASE

6h 01m

1 stop

11:32 am - 4:33 pm

ASE

STL

4h 01m

1 stop

$409United Airlines

Sat, May 30 - Wed, Jun 3

6:00 am - 2:44 pm

STL

ASE

9h 44m

2 stops

1:22 pm - 9:10 pm

ASE

STL

6h 48m

1 stop

$414United Airlines

Sat, May 30 - Wed, Jun 3

6:00 am - 2:44 pm

STL

ASE

9h 44m

2 stops

11:32 am - 9:21 pm

ASE

STL

8h 49m

2 stops

$419United Airlines

Sat, May 30 - Wed, Jun 3

5:10 am - 8:44 am

STL

ASE

4h 34m

1 stop

2:17 pm - 8:39 pm

ASE

STL

5h 22m

1 stop

$427United Airlines

Sun, Sep 20 - Wed, Sep 23

5:10 am - 10:37 am

STL

ASE

6h 27m

1 stop

2:17 pm - 11:00 pm

ASE

STL

7h 43m

2 stops

$432United Airlines

Sun, Sep 20 - Wed, Sep 23

5:29 pm - 10:00 pm

STL

ASE

5h 31m

1 stop

8:32 am - 11:35 pm

ASE

STL

14h 03m

2 stops

$449United Airlines

Fri, Jun 12 - Wed, Jun 17

6:00 am - 11:35 am

STL

ASE

6h 35m

1 stop

8:05 am - 3:58 pm

ASE

STL

6h 53m

1 stop

$455Delta

Sun, Oct 25 - Wed, Oct 28

Delta flights from St. Louis to Aspen

Our best Delta deals on St. Louis to Aspen flight tickets

Delta

Sep 20

STL6:00 amLambert-St Louis

6h 21m

1 stop

ASE11:21 amAspen Pitkin County

Sep 23

ASE8:05 amAspen Pitkin County

6h 52m

1 stop

STL3:57 pmLambert-St Louis

$373

Delta

Oct 25

STL6:00 amLambert-St Louis

6h 35m

1 stop

ASE11:35 amAspen Pitkin County

Oct 28

ASE8:05 amAspen Pitkin County

6h 53m

1 stop

STL3:58 pmLambert-St Louis

$455

United Airlines flights from St. Louis to Aspen

Our best United Airlines deals on St. Louis to Aspen flight tickets

United Airlines

May 22

STL5:10 amLambert-St Louis

4h 36m

1 stop

ASE8:46 amAspen Pitkin County

May 26

ASE3:25 pmAspen Pitkin County

4h 45m

1 stop

STL9:10 pmLambert-St Louis

$329

United Airlines

Sep 20

STL6:00 amLambert-St Louis

6h 04m

1 stop

ASE11:04 amAspen Pitkin County

Sep 23

ASE2:17 pmAspen Pitkin County

5h 22m

1 stop

STL8:39 pmLambert-St Louis

$347

United Airlines

May 30

STL6:00 amLambert-St Louis

6h 01m

1 stop

ASE11:01 amAspen Pitkin County

Jun 3

ASE11:32 amAspen Pitkin County

4h 01m

1 stop

STL4:33 pmLambert-St Louis

$409

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Quickest round-trip

St. LouisAspen

STL - ASE

STLASE

Lambert-St Louis

Fri 5/22

5:10 am-8:46 am

1 stop4h 36m

Aspen Pitkin County

Tue 5/26

3:25 pm-9:10 pm

1 stop4h 45m

$329

St. LouisAspen

STL - ASE

STLASE

Lambert-St Louis

Sun 9/20

6:00 am-11:04 am

1 stop6h 04m

Aspen Pitkin County

Wed 9/23

2:17 pm-8:39 pm

1 stop5h 22m

$347

St. LouisAspen

STL - ASE

STLASE

Lambert-St Louis

Sun 9/20

6:00 am-11:21 am

1 stop6h 21m

Aspen Pitkin County

Wed 9/23

8:05 am-3:57 pm

1 stop6h 52m

$373

St. LouisAspen

STL - ASE

STLASE

Lambert-St Louis

Sat 5/30

6:00 am-11:01 am

1 stop6h 01m

Aspen Pitkin County

Wed 6/3

11:32 am-4:33 pm

1 stop4h 01m

$409

St. LouisAspen

STL - ASE

STLASE

Lambert-St Louis

Sat 5/30

6:00 am-2:44 pm

2 stops9h 44m

Aspen Pitkin County

Wed 6/3

1:22 pm-9:10 pm

1 stop6h 48m

$414

St. LouisAspen

STL - ASE

STLASE

Lambert-St Louis

Sat 5/30

6:00 am-2:44 pm

2 stops9h 44m

Aspen Pitkin County

Wed 6/3

11:32 am-9:21 pm

2 stops8h 49m

$419

St. LouisAspen

STL - ASE

STLASE

Lambert-St Louis

Sun 9/20

5:10 am-8:44 am

1 stop4h 34m

Aspen Pitkin County

Wed 9/23

2:17 pm-8:39 pm

1 stop5h 22m

$427

St. LouisAspen

STL - ASE

STLASE

Lambert-St Louis

Sun 9/20

5:10 am-10:37 am

1 stop6h 27m

Aspen Pitkin County

Wed 9/23

2:17 pm-11:00 pm

2 stops7h 43m

$432

St. LouisAspen

STL - ASE

STLASE

Lambert-St Louis

Fri 6/12

5:29 pm-10:00 pm

1 stop5h 31m

Aspen Pitkin County

Wed 6/17

8:32 am-11:35 pm

2 stops14h 03m

$449

St. LouisAspen

STL - ASE

STLASE

Lambert-St Louis

Sun 10/25

6:00 am-11:35 am

1 stop6h 35m

Aspen Pitkin County

Wed 10/28

8:05 am-3:58 pm

1 stop6h 53m

$455

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 resultsSorted by cheapest first

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

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

Prices

Airlines

What is the cheapest month to fly to Aspen?

The month of April is, on average, the cheapest month to fly to Aspen from St. Louis, with most prices found around $0. If you aren’t able to travel to Aspen during the month of April, then flying in May is also cheap. Prices for this month can be found on momondo for an average of $328.

When to book flights from St. Louis to Aspen

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

Estimated round-trip price

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

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

Fastest flight time	4h 36m
Direct flights	None

The fastest flight from St. Louis to Aspen takes 4h 36m

There are no direct flights from St. Louis to Aspen. There are no popular flight routes from St. Louis to Aspen.

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Frequently asked questions about flying from St. Louis to Aspen

How far is Lambert-St Louis to Aspen Pitkin County by plane?
A flight from Lambert-St Louis to Aspen Pitkin County will travel around 892.5 mi. Flights usually cover this in 4h 36m, depending on flying conditions and air traffic around both airports.
When did momondo last update prices for flights from Lambert-St Louis Airport to Aspen Pitkin County Airport?
Prices for flights from Lambert-St Louis Airport to Aspen Pitkin County Airport refresh daily.
How many operators does momondo search for flights from Lambert-St Louis Airport to Aspen Pitkin County Airport?
There is 1 operator available for flights from Lambert-St Louis Airport to Aspen Pitkin County Airport as of May 2026.
How old do you have to be to fly from Lambert-St Louis Airport to Aspen Pitkin County Airport?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Lambert-St Louis Airport to Aspen Pitkin County Airport.
What documentation or ID do you need to fly to Aspen Pitkin County Airport?
The required travel and health documents for your Aspen Pitkin County Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Aspen Pitkin County Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular airline from St. Louis to Aspen?
Based on momondo bookings for this flight route, the most popular airline on flight routes from St. Louis to Aspen is United Airlines (100% of total bookings).

Best airlines flying from St. Louis to Aspen

Compare and see reviews for airlines that fly from St. Louis to Aspen with momondo

Airline	Rating	Free Cancellation	Price
United Airlines	PriceFrom $269	Free Cancellation	Rating 7.4 9,694 reviews		Search United Airlines flights

Leadville

Snowmass Village

Snowmass

Carbondale

Buena Vista

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Flights from St. Louis to Aspen with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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