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

Delta, 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 are 2 operators available for flights from Lambert-St Louis Airport to Aspen Pitkin County Airport as of December 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.

$199 Cheap Flights from St. Louis to Aspen in 2025/26

Q: What is the typical price of a round-trip flight between St. Louis and Aspen?

Prices are currently low for flights on this route. Typical prices usually range from $391 to $788. The lowest price recently found on this route was $265.

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Find the cheapest flights from St. Louis to Aspen

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

2:45 pm - 6:39 pm

STL

ASE

4h 54m1 stop

12:36 pm - 8:58 pm

ASE

STL

7h 22m1 stop

$265United Airlines

Wed, Jan 28 - Tue, Feb 3

2:45 pm - 6:39 pm

STL

ASE

4h 54m1 stop

12:36 pm - 10:58 pm

ASE

STL

9h 22m2 stops

$271United Airlines

Wed, Jan 28 - Tue, Feb 3

9:57 am - 3:20 pm

STL

ASE

6h 23m1 stop

3:25 pm - 8:58 pm

ASE

STL

4h 33m1 stop

$299United Airlines

Sat, Jan 10 - Wed, Jan 14

8:30 am - 8:15 pm

STL

ASE

12h 45m2 stops

10:35 am - 4:55 pm

ASE

STL

5h 20m1 stop

$304United Airlines

Sat, Jan 10 - Wed, Jan 14

9:57 am - 6:39 pm

STL

ASE

9h 42m2 stops

12:36 pm - 10:58 pm

ASE

STL

9h 22m2 stops

$309United Airlines

Sat, Jan 10 - Wed, Jan 14

11:20 am - 6:39 pm

STL

ASE

8h 19m2 stops

12:36 pm - 9:13 pm

ASE

STL

7h 37m2 stops

$317United Airlines

Wed, Jan 28 - Tue, Feb 3

11:20 am - 6:25 pm

STL

ASE

8h 05m1 stop

1:33 pm - 8:58 pm

ASE

STL

6h 25m1 stop

$319United Airlines

Sat, Jan 10 - Wed, Jan 14

8:30 am - 6:39 pm

STL

ASE

11h 09m2 stops

3:25 pm - 8:58 pm

ASE

STL

4h 33m1 stop

$324United Airlines

Sat, Jan 10 - Wed, Jan 14

9:57 am - 8:15 pm

STL

ASE

11h 18m2 stops

12:36 pm - 10:58 pm

ASE

STL

9h 22m2 stops

$329United Airlines

Sat, Jan 10 - Wed, Jan 14

5:20 am - 8:51 am

STL

ASE

4h 31m1 stop

6:00 pm - 11:43 pm

ASE

STL

4h 43m1 stop

$346United Airlines

Mon, Jun 8 - Sat, Jun 13

United Airlines flights from St. Louis to Aspen

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

United Airlines

Jan 28

STL2:45 pmLambert-St Louis

4h 54m

1 stop

ASE6:39 pmAspen Pitkin County

Feb 3

ASE12:36 pmAspen Pitkin County

7h 22m

1 stop

STL8:58 pmLambert-St Louis

$265

Find similar

United Airlines

Jan 28

STL2:45 pmLambert-St Louis

4h 54m

1 stop

ASE6:39 pmAspen Pitkin County

Feb 3

ASE12:36 pmAspen Pitkin County

9h 22m

2 stops

STL10:58 pmLambert-St Louis

$271

Find similar

United Airlines

Jan 10

STL9:57 amLambert-St Louis

6h 23m

1 stop

ASE3:20 pmAspen Pitkin County

Jan 14

ASE3:25 pmAspen Pitkin County

4h 33m

1 stop

STL8:58 pmLambert-St Louis

$299

Find similar

American Airlines flights from St. Louis to Aspen

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

American Airlines

Jan 30

STL11:55 amLambert-St Louis

5h 33m

1 stop

ASE4:28 pmAspen Pitkin County

Feb 2

ASE12:54 pmAspen Pitkin County

6h 19m

1 stop

STL8:13 pmLambert-St Louis

$397

Find similar

American Airlines

Feb 4

STL11:55 amLambert-St Louis

5h 33m

1 stop

ASE4:28 pmAspen Pitkin County

Feb 9

ASE4:58 pmAspen Pitkin County

5h 01m

1 stop

STL10:59 pmLambert-St Louis

$448

Find similar

American Airlines

Jan 30

STL7:15 amLambert-St Louis

6h 09m

1 stop

ASE12:24 pmAspen Pitkin County

Feb 2

ASE12:12 pmAspen Pitkin County

9h 47m

2 stops

STL10:59 pmLambert-St Louis

$453

Find similar

Fly from

Fly to

Route

Depart

Return

Price

St. LouisAspen

STL - ASE

STLASE

Lambert-St Louis

Wed 1/28

2:45 pm-6:39 pm

1 stop4h 54m

Aspen Pitkin County

Tue 2/3

12:36 pm-8:58 pm

1 stop7h 22m

$265

St. LouisAspen

STL - ASE

STLASE

Lambert-St Louis

Wed 1/28

2:45 pm-6:39 pm

1 stop4h 54m

Aspen Pitkin County

Tue 2/3

12:36 pm-10:58 pm

2 stops9h 22m

$271

St. LouisAspen

STL - ASE

STLASE

Lambert-St Louis

Sat 1/10

9:57 am-3:20 pm

1 stop6h 23m

Aspen Pitkin County

Wed 1/14

3:25 pm-8:58 pm

1 stop4h 33m

$299

St. LouisAspen

STL - ASE

STLASE

Lambert-St Louis

Sat 1/10

8:30 am-8:15 pm

2 stops12h 45m

Aspen Pitkin County

Wed 1/14

10:35 am-4:55 pm

1 stop5h 20m

$304

St. LouisAspen

STL - ASE

STLASE

Lambert-St Louis

Sat 1/10

9:57 am-6:39 pm

2 stops9h 42m

Aspen Pitkin County

Wed 1/14

12:36 pm-10:58 pm

2 stops9h 22m

$309

St. LouisAspen

STL - ASE

STLASE

Lambert-St Louis

Wed 1/28

11:20 am-6:39 pm

2 stops8h 19m

Aspen Pitkin County

Tue 2/3

12:36 pm-9:13 pm

2 stops7h 37m

$317

St. LouisAspen

STL - ASE

STLASE

Lambert-St Louis

Sat 1/10

11:20 am-6:25 pm

1 stop8h 05m

Aspen Pitkin County

Wed 1/14

1:33 pm-8:58 pm

1 stop6h 25m

$319

St. LouisAspen

STL - ASE

STLASE

Lambert-St Louis

Sat 1/10

8:30 am-6:39 pm

2 stops11h 09m

Aspen Pitkin County

Wed 1/14

3:25 pm-8:58 pm

1 stop4h 33m

$324

St. LouisAspen

STL - ASE

STLASE

Lambert-St Louis

Sat 1/10

9:57 am-8:15 pm

2 stops11h 18m

Aspen Pitkin County

Wed 1/14

12:36 pm-10:58 pm

2 stops9h 22m

$329

St. LouisAspen

STL - ASE

STLASE

Lambert-St Louis

Mon 6/8

5:20 am-8:51 am

1 stop4h 31m

Aspen Pitkin County

Sat 6/13

6:00 pm-11:43 pm

1 stop4h 43m

$346

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 18 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 typical price of a round-trip flight between St. Louis and Aspen?

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

Fastest flight time	4h 31m
Direct flights	None

The fastest flight from St. Louis to Aspen takes 4h 31m

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

Search flight deals

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 31m, 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 December 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 (77% of total bookings). The next most popular airline is American Airlines (23%).

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 $236	Free Cancellation	Rating 7.2 11,054 reviews		Search American Airlines flights
United Airlines	PriceFrom $318	Free Cancellation	Rating 7.4 9,105 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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