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 are 2 operators available for flights from Lambert-St Louis Airport to Aspen Pitkin County Airport as of November 2025.

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.

$259 Cheap Flights from St. Louis to Aspen in 2025/26

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Find the cheapest flights from St. Louis to Aspen

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Cheap round-trip flights

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7:00 am - 2:23 pmSTL-ASE

8h 23m1 stop

2:53 pm - 11:44 pmASE-STL

7h 51m1 stop

$343American Airlines

Find Deal

Tue, Dec 23 - Sun, Dec 28

6:00 am - 11:21 amSTL-ASE

6h 21m1 stop

1:05 pm - 9:58 pmASE-STL

7h 53m1 stop

$354Delta

Find Deal

Thu, Nov 20 - Mon, Nov 24

7:00 am - 2:23 pmSTL-ASE

8h 23m1 stop

2:53 pm - 11:44 pmASE-STL

7h 51m1 stop

$395American Airlines

Find Deal

Tue, Dec 23 - Sun, Dec 28

9:55 am - 3:30 pmSTL-ASE

6h 35m1 stop

11:10 am - 10:43 pmASE-STL

10h 33m2 stops

$494United Airlines

Find Deal

Tue, Dec 23 - Sun, Dec 28

2:45 pm - 9:35 pmSTL-ASE

7h 50m1 stop

5:00 pm - 10:22 pmASE-STL

4h 22m1 stop

$502United Airlines

Find Deal

Sat, Dec 20 - Sat, Dec 27

2:45 pm - 10:29 amSTL-ASE

20h 44m1 stop

11:10 am - 10:43 pmASE-STL

10h 33m2 stops

$527United Airlines

Find Deal

Tue, Dec 23 - Sun, Dec 28

5:17 am - 11:42 amSTL-ASE

7h 25m1 stop

7:34 am - 11:56 pmASE-STL

15h 22m2 stops

$558American Airlines

Find Deal

Thu, Nov 20 - Mon, Nov 24

6:30 am - 12:29 pmSTL-ASE

6h 59m2 stops

8:30 am - 7:16 pmASE-STL

9h 46m2 stops

$615United Airlines

Find Deal

Thu, Nov 20 - Mon, Nov 24

2:45 pm - 11:14 amSTL-ASE

21h 29m2 stops

5:00 pm - 10:22 pmASE-STL

4h 22m1 stop

$623United Airlines

Find Deal

Sat, Dec 20 - Sat, Dec 27

2:45 pm - 11:14 amSTL-ASE

21h 29m2 stops

11:10 am - 10:43 pmASE-STL

10h 33m2 stops

$668United Airlines

Find Deal

Tue, Dec 23 - Sun, Dec 28

American Airlines flights from St. Louis to Aspen

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

American Airlines

Dec 23

STL7:00 amLambert-St Louis

8h 23m

1 stop

ASE2:23 pmAspen Pitkin County

Dec 28

ASE2:53 pmAspen Pitkin County

7h 51m

1 stop

STL11:44 pmLambert-St Louis

$343

Find similar

American Airlines

Dec 23

STL7:00 amLambert-St Louis

8h 23m

1 stop

ASE2:23 pmAspen Pitkin County

Dec 28

ASE2:53 pmAspen Pitkin County

7h 51m

1 stop

STL11:44 pmLambert-St Louis

$395

Find similar

American Airlines

Nov 20

STL5:17 amLambert-St Louis

7h 25m

1 stop

ASE11:42 amAspen Pitkin County

Nov 24

ASE7:34 amAspen Pitkin County

15h 22m

2 stops

STL11:56 pmLambert-St Louis

$558

Find similar

United Airlines flights from St. Louis to Aspen

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

United Airlines

Dec 23

STL9:55 amLambert-St Louis

6h 35m

1 stop

ASE3:30 pmAspen Pitkin County

Dec 28

ASE11:10 amAspen Pitkin County

10h 33m

2 stops

STL10:43 pmLambert-St Louis

$494

Find similar

United Airlines

Dec 20

STL2:45 pmLambert-St Louis

7h 50m

1 stop

ASE9:35 pmAspen Pitkin County

Dec 27

ASE5:00 pmAspen Pitkin County

4h 22m

1 stop

STL10:22 pmLambert-St Louis

$502

Find similar

United Airlines

Dec 23

STL2:45 pmLambert-St Louis

20h 44m

1 stop

ASE10:29 amAspen Pitkin County

Dec 28

ASE11:10 amAspen Pitkin County

10h 33m

2 stops

STL10:43 pmLambert-St Louis

$527

Find similar

Fly from

Fly to

Route

Depart

Return

Price

St. LouisAspen

STL - ASE

STLASE

Lambert-St Louis

Tue 12/23

7:00 am-2:23 pm

1 stop8h 23m

Aspen Pitkin County

Sun 12/28

2:53 pm-11:44 pm

1 stop7h 51m

$343

St. LouisAspen

STL - ASE

STLASE

Lambert-St Louis

Thu 11/20

6:00 am-11:21 am

1 stop6h 21m

Aspen Pitkin County

Mon 11/24

1:05 pm-9:58 pm

1 stop7h 53m

$354

St. LouisAspen

STL - ASE

STLASE

Lambert-St Louis

Tue 12/23

7:00 am-2:23 pm

1 stop8h 23m

Aspen Pitkin County

Sun 12/28

2:53 pm-11:44 pm

1 stop7h 51m

$395

St. LouisAspen

STL - ASE

STLASE

Lambert-St Louis

Tue 12/23

9:55 am-3:30 pm

1 stop6h 35m

Aspen Pitkin County

Sun 12/28

11:10 am-10:43 pm

2 stops10h 33m

$494

St. LouisAspen

STL - ASE

STLASE

Lambert-St Louis

Sat 12/20

2:45 pm-9:35 pm

1 stop7h 50m

Aspen Pitkin County

Sat 12/27

5:00 pm-10:22 pm

1 stop4h 22m

$502

St. LouisAspen

STL - ASE

STLASE

Lambert-St Louis

Tue 12/23

2:45 pm-10:29 am

1 stop20h 44m

Aspen Pitkin County

Sun 12/28

11:10 am-10:43 pm

2 stops10h 33m

$527

St. LouisAspen

STL - ASE

STLASE

Lambert-St Louis

Thu 11/20

5:17 am-11:42 am

1 stop7h 25m

Aspen Pitkin County

Mon 11/24

7:34 am-11:56 pm

2 stops15h 22m

$558

St. LouisAspen

STL - ASE

STLASE

Lambert-St Louis

Thu 11/20

6:30 am-12:29 pm

2 stops6h 59m

Aspen Pitkin County

Mon 11/24

8:30 am-7:16 pm

2 stops9h 46m

$615

St. LouisAspen

STL - ASE

STLASE

Lambert-St Louis

Sat 12/20

2:45 pm-11:14 am

2 stops21h 29m

Aspen Pitkin County

Sat 12/27

5:00 pm-10:22 pm

1 stop4h 22m

$623

St. LouisAspen

STL - ASE

STLASE

Lambert-St Louis

Tue 12/23

2:45 pm-11:14 am

2 stops21h 29m

Aspen Pitkin County

Sun 12/28

11:10 am-10:43 pm

2 stops10h 33m

$668

Flights are sorted by cheapest round-trip flights first.

Sorted 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

What is the cheapest day to depart on your flight to Aspen?

The cheapest day to depart from St. Louis to Aspen is on a Tuesday when prices can be found for as low as $428. The most expensive day to fly to Aspen is Thursday, with ticket prices averaging around $713.

What is the cheapest time of day to depart on your flight to Aspen?

In the morning is the cheapest time of day to fly from St. Louis to Aspen when you can find flight prices for as low as $542. Flying to Aspen in the morning is an ideal time because this is during off-peak travel hours. Try not to purchase tickets in the afternoon because they tend to be around $632. Of course, these prices can vary depending on the time of year and what airport you fly to.

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

Direct flights	None

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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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 5h 46m, 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 are 2 operators available for flights from Lambert-St Louis Airport to Aspen Pitkin County Airport as of November 2025.
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 (74% of total bookings). The next most popular airline is American Airlines (26%).

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
American Airlines	PriceFrom $288	Free Cancellation	Rating 7.2 11,040 reviews		Search American Airlines flights
United Airlines	PriceFrom $298	Free Cancellation	Rating 7.4 9,007 reviews		Search United Airlines flights

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

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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