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Cheap flights from St. Louis to Aspen from $229

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Aspen departing on 1/20. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from St. Louis to Aspen

Cheap round-trip flights

American Airlines Logo
5:14 am - 10:04 amSTL-ASE
5h 50m1 stop
American Airlines Logo
8:08 am - 4:14 pmASE-STL
7h 06m1 stop
$229American Airlines
Find Deal
Tue, Jan 20 - Tue, Jan 27
American Airlines Logo
7:09 am - 12:01 pmSTL-ASE
5h 52m1 stop
American Airlines Logo
12:10 pm - 10:27 pmASE-STL
9h 17m2 stops
$234American Airlines
Find Deal
Tue, Jan 20 - Tue, Jan 27
Delta Logo
7:30 am - 2:19 pmSTL-ASE
7h 49m1 stop
Delta Logo
3:00 pm - 11:40 pmASE-STL
7h 40m1 stop
$237Delta
Find Deal
Tue, Jan 13 - Thu, Jan 22
United Airlines Logo
3:20 pm - 9:45 pmSTL-ASE
7h 25m1 stop
United Airlines Logo
2:40 pm - 8:46 pmASE-STL
5h 06m1 stop
$270United Airlines
Find Deal
Thu, Sep 4 - Mon, Sep 8
United Airlines Logo
11:30 am - 6:19 pmSTL-ASE
7h 49m2 stops
United Airlines Logo
2:40 pm - 8:46 pmASE-STL
5h 06m1 stop
$276United Airlines
Find Deal
Thu, Sep 4 - Mon, Sep 8
American Airlines Logo
11:58 am - 6:25 pmSTL-ASE
7h 27m1 stop
American Airlines Logo
10:13 am - 6:23 pmASE-STL
7h 10m1 stop
$299American Airlines
Find Deal
Wed, Jan 14 - Thu, Jan 22
United Airlines Logo
11:45 am - 8:30 pmSTL-ASE
9h 45m2 stops
United Airlines Logo
1:30 pm - 10:06 pmASE-STL
7h 36m1 stop
$304United Airlines
Find Deal
Tue, Jan 13 - Fri, Jan 23
United Airlines Logo
1:30 pm - 4:56 pmSTL-ASE
4h 26m1 stop
United Airlines Logo
1:00 pm - 8:59 pmASE-STL
6h 59m1 stop
$339United Airlines
Find Deal
Tue, Jan 13 - Sat, Jan 17
Delta Logo
7:30 am - 2:19 pmSTL-ASE
7h 49m1 stop
Delta Logo
3:00 pm - 11:40 pmASE-STL
7h 40m1 stop
$377Delta
Find Deal
Sun, Jan 18 - Thu, Jan 22
Delta Logo
6:00 am - 2:19 pmSTL-ASE
9h 19m1 stop
Delta Logo
3:00 pm - 11:40 pmASE-STL
7h 40m1 stop
$408Delta
Find Deal
Mon, Jan 19 - Thu, Jan 22

American Airlines flights from St. Louis to Aspen

Our best American Airlines deals on St. Louis to Aspen flight tickets
American Airlines
Jan 20
STL5:14 amLambert-St Louis
5h 50m
1 stop
ASE10:04 amAspen Pitkin County
Jan 27
ASE8:08 amAspen Pitkin County
7h 06m
1 stop
STL4:14 pmLambert-St Louis
$229
Find similar
American Airlines
Jan 20
STL7:09 amLambert-St Louis
5h 52m
1 stop
ASE12:01 pmAspen Pitkin County
Jan 27
ASE12:10 pmAspen Pitkin County
9h 17m
2 stops
STL10:27 pmLambert-St Louis
$234
Find similar
American Airlines
Jan 14
STL11:58 amLambert-St Louis
7h 27m
1 stop
ASE6:25 pmAspen Pitkin County
Jan 22
ASE10:13 amAspen Pitkin County
7h 10m
1 stop
STL6:23 pmLambert-St Louis
$299
Find similar

United Airlines flights from St. Louis to Aspen

Our best United Airlines deals on St. Louis to Aspen flight tickets
United Airlines
Sep 4
STL3:20 pmLambert-St Louis
7h 25m
1 stop
ASE9:45 pmAspen Pitkin County
Sep 8
ASE2:40 pmAspen Pitkin County
5h 06m
1 stop
STL8:46 pmLambert-St Louis
$270
Find similar
United Airlines
Sep 4
STL11:30 amLambert-St Louis
7h 49m
2 stops
ASE6:19 pmAspen Pitkin County
Sep 8
ASE2:40 pmAspen Pitkin County
5h 06m
1 stop
STL8:46 pmLambert-St Louis
$276
Find similar
United Airlines
Jan 13
STL11:45 amLambert-St Louis
9h 45m
2 stops
ASE8:30 pmAspen Pitkin County
Jan 23
ASE1:30 pmAspen Pitkin County
7h 36m
1 stop
STL10:06 pmLambert-St Louis
$304
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from St. Louis to Aspen 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 August 21, 2025.
Use the filters below to find and compare flights from St. Louis to Aspen that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

St. LouisAspen

STL - ASE

STLASE

Lambert-St Louis

Tue 1/20

5:14 am-10:04 am

1 stop5h 50m

Aspen Pitkin County

Tue 1/27

8:08 am-4:14 pm

1 stop7h 06m

$229

St. LouisAspen

STL - ASE

STLASE

Lambert-St Louis

Tue 1/20

7:09 am-12:01 pm

1 stop5h 52m

Aspen Pitkin County

Tue 1/27

12:10 pm-10:27 pm

2 stops9h 17m

$234

St. LouisAspen

STL - ASE

STLASE

Lambert-St Louis

Tue 1/13

7:30 am-2:19 pm

1 stop7h 49m

Aspen Pitkin County

Thu 1/22

3:00 pm-11:40 pm

1 stop7h 40m

$237

St. LouisAspen

STL - ASE

STLASE

Lambert-St Louis

Thu 9/4

3:20 pm-9:45 pm

1 stop7h 25m

Aspen Pitkin County

Mon 9/8

2:40 pm-8:46 pm

1 stop5h 06m

$270

St. LouisAspen

STL - ASE

STLASE

Lambert-St Louis

Thu 9/4

11:30 am-6:19 pm

2 stops7h 49m

Aspen Pitkin County

Mon 9/8

2:40 pm-8:46 pm

1 stop5h 06m

$276

St. LouisAspen

STL - ASE

STLASE

Lambert-St Louis

Wed 1/14

11:58 am-6:25 pm

1 stop7h 27m

Aspen Pitkin County

Thu 1/22

10:13 am-6:23 pm

1 stop7h 10m

$299

St. LouisAspen

STL - ASE

STLASE

Lambert-St Louis

Tue 1/13

11:45 am-8:30 pm

2 stops9h 45m

Aspen Pitkin County

Fri 1/23

1:30 pm-10:06 pm

1 stop7h 36m

$304

St. LouisAspen

STL - ASE

STLASE

Lambert-St Louis

Tue 1/13

1:30 pm-4:56 pm

1 stop4h 26m

Aspen Pitkin County

Sat 1/17

1:00 pm-8:59 pm

1 stop6h 59m

$339

St. LouisAspen

STL - ASE

STLASE

Lambert-St Louis

Sun 1/18

7:30 am-2:19 pm

1 stop7h 49m

Aspen Pitkin County

Thu 1/22

3:00 pm-11:40 pm

1 stop7h 40m

$377

St. LouisAspen

STL - ASE

STLASE

Lambert-St Louis

Mon 1/19

6:00 am-2:19 pm

1 stop9h 19m

Aspen Pitkin County

Thu 1/22

3:00 pm-11:40 pm

1 stop7h 40m

$408

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

See travel insights to Aspen from

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 4h 26m, 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?

  • 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?

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 AirlinesPriceFrom $288Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
United AirlinesPriceFrom $388Free CancellationRating
7.4
8,930 reviews
Search United Airlines flights

Traveling to a place near Aspen?

Book flights to Aspen if you plan to visit one of these locations
Snowmass Village
Leadville
Snowmass
Buena Vista
Carbondale

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from St. Louis to Aspen. Millions of users trust and use momondo every year so you are in good hands.

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.

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

Once all potential St. Louis to Aspen flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

Of course. momondo tracks the price of St. Louis to Aspen flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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