Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from St. Louis to Aspen from $408

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 7/24. 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 St. Louis to Aspen

Cheap round-trip flights

Enter your travel dates to find the best prices.
American Airlines Logo
5:30 am - 10:01 am
STL
-
ASE
5h 31m
1 stop
American Airlines Logo
7:25 am - 1:53 pm
ASE
-
STL
5h 28m
1 stop
$408American Airlines
Fri, Jul 24 - Wed, Jul 29
United Airlines Logo
5:10 am - 8:46 am
STL
-
ASE
4h 36m
1 stop
United Airlines Logo
1:07 pm - 8:43 pm
ASE
-
STL
6h 36m
1 stop
$455United Airlines
Mon, Jul 13 - Fri, Jul 17
United Airlines Logo
1:38 pm - 5:26 pm
STL
-
ASE
4h 48m
1 stop
United Airlines Logo
1:07 pm - 8:43 pm
ASE
-
STL
6h 36m
1 stop
$467United Airlines
Sat, Jul 11 - Wed, Jul 15
United Airlines Logo
5:10 am - 8:46 am
STL
-
ASE
4h 36m
1 stop
United Airlines Logo
6:12 pm - 11:57 pm
ASE
-
STL
4h 45m
1 stop
$469United Airlines
Wed, Jul 29 - Mon, Aug 3
United Airlines Logo
4:40 pm - 8:16 pm
STL
-
ASE
4h 36m
1 stop
United Airlines Logo
11:25 am - 4:34 pm
ASE
-
STL
4h 09m
1 stop
$488United Airlines
Sat, Aug 29 - Wed, Sep 2
United Airlines Logo
8:30 am - 2:23 pm
STL
-
ASE
6h 53m
2 stops
United Airlines Logo
1:15 pm - 8:46 pm
ASE
-
STL
6h 31m
1 stop
$493United Airlines
Sat, Aug 29 - Wed, Sep 2
United Airlines Logo
11:10 am - 6:45 pm
STL
-
ASE
8h 35m
1 stop
United Airlines Logo
9:15 am - 11:44 pm
ASE
-
STL
13h 29m
2 stops
$540United Airlines
Mon, Jul 13 - Fri, Jul 17
United Airlines Logo
6:00 am - 5:26 pm
STL
-
ASE
12h 26m
2 stops
United Airlines Logo
2:22 pm - 8:43 pm
ASE
-
STL
5h 21m
1 stop
$552United Airlines
Sat, Jul 11 - Wed, Jul 15
United Airlines Logo
6:00 am - 6:45 pm
STL
-
ASE
13h 45m
2 stops
United Airlines Logo
5:10 pm - 11:57 pm
ASE
-
STL
5h 47m
1 stop
$554United Airlines
Wed, Jul 29 - Mon, Aug 3
United Airlines Logo
8:00 am - 5:26 pm
STL
-
ASE
10h 26m
2 stops
United Airlines Logo
2:22 pm - 11:29 pm
ASE
-
STL
8h 07m
2 stops
$558United Airlines
Sat, Jul 11 - Wed, Jul 15

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

United Airlines flights from St. Louis to Aspen

Our best United Airlines deals on St. Louis to Aspen flight tickets
United Airlines
Jul 13
STL5:10 amLambert-St Louis
4h 36m
1 stop
ASE8:46 amAspen Pitkin County
Jul 17
ASE1:07 pmAspen Pitkin County
6h 36m
1 stop
STL8:43 pmLambert-St Louis
$455
United Airlines
Jul 11
STL1:38 pmLambert-St Louis
4h 48m
1 stop
ASE5:26 pmAspen Pitkin County
Jul 15
ASE1:07 pmAspen Pitkin County
6h 36m
1 stop
STL8:43 pmLambert-St Louis
$467
United Airlines
Jul 29
STL5:10 amLambert-St Louis
4h 36m
1 stop
ASE8:46 amAspen Pitkin County
Aug 3
ASE6:12 pmAspen Pitkin County
4h 45m
1 stop
STL11:57 pmLambert-St Louis
$469

American Airlines flights from St. Louis to Aspen

Our best American Airlines deals on St. Louis to Aspen flight tickets
American Airlines
Jul 24
STL5:30 amLambert-St Louis
5h 31m
1 stop
ASE10:01 amAspen Pitkin County
Jul 29
ASE7:25 amAspen Pitkin County
5h 28m
1 stop
STL1:53 pmLambert-St Louis
$408
American Airlines
Sep 18
STL1:49 pmLambert-St Louis
8h 40m
1 stop
ASE9:29 pmAspen Pitkin County
Sep 22
ASE7:00 amAspen Pitkin County
5h 16m
1 stop
STL1:16 pmLambert-St Louis
$756
American Airlines
Sep 18
STL1:49 pmLambert-St Louis
8h 40m
1 stop
ASE9:29 pmAspen Pitkin County
Sep 22
ASE12:53 pmAspen Pitkin County
10h 34m
2 stops
STL12:27 amLambert-St Louis
$1,140

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 June 29, 2026.
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

Cheapest round-trip

St. LouisAspen

STL - ASE

STLASE

Lambert-St Louis

Fri 7/24

5:30 am-10:01 am

1 stop5h 31m

Aspen Pitkin County

Wed 7/29

7:25 am-1:53 pm

1 stop5h 28m

$408

St. LouisAspen

STL - ASE

STLASE

Lambert-St Louis

Mon 7/13

5:10 am-8:46 am

1 stop4h 36m

Aspen Pitkin County

Fri 7/17

1:07 pm-8:43 pm

1 stop6h 36m

$455

St. LouisAspen

STL - ASE

STLASE

Lambert-St Louis

Sat 7/11

1:38 pm-5:26 pm

1 stop4h 48m

Aspen Pitkin County

Wed 7/15

1:07 pm-8:43 pm

1 stop6h 36m

$467

St. LouisAspen

STL - ASE

STLASE

Lambert-St Louis

Wed 7/29

5:10 am-8:46 am

1 stop4h 36m

Aspen Pitkin County

Mon 8/3

6:12 pm-11:57 pm

1 stop4h 45m

$469
Quickest round-trip

St. LouisAspen

STL - ASE

STLASE

Lambert-St Louis

Sat 8/29

4:40 pm-8:16 pm

1 stop4h 36m

Aspen Pitkin County

Wed 9/2

11:25 am-4:34 pm

1 stop4h 09m

$488

St. LouisAspen

STL - ASE

STLASE

Lambert-St Louis

Sat 8/29

8:30 am-2:23 pm

2 stops6h 53m

Aspen Pitkin County

Wed 9/2

1:15 pm-8:46 pm

1 stop6h 31m

$493

St. LouisAspen

STL - ASE

STLASE

Lambert-St Louis

Mon 7/13

11:10 am-6:45 pm

1 stop8h 35m

Aspen Pitkin County

Fri 7/17

9:15 am-11:44 pm

2 stops13h 29m

$540

St. LouisAspen

STL - ASE

STLASE

Lambert-St Louis

Sat 7/11

6:00 am-5:26 pm

2 stops12h 26m

Aspen Pitkin County

Wed 7/15

2:22 pm-8:43 pm

1 stop5h 21m

$552

St. LouisAspen

STL - ASE

STLASE

Lambert-St Louis

Wed 7/29

6:00 am-6:45 pm

2 stops13h 45m

Aspen Pitkin County

Mon 8/3

5:10 pm-11:57 pm

1 stop5h 47m

$554

St. LouisAspen

STL - ASE

STLASE

Lambert-St Louis

Sat 7/11

8:00 am-5:26 pm

2 stops10h 26m

Aspen Pitkin County

Wed 7/15

2:22 pm-11:29 pm

2 stops8h 07m

$558

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 typical price of a round-trip flight between St. Louis and Aspen?

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.
Search flight deals

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?

  • 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
United AirlinesPriceFrom $269Free CancellationRating
7.4
9,894 reviews
Search United Airlines flights

Traveling to a place near Aspen?

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

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.

An easier way to manage your Aspen trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Wed 7/29
Wed 8/5
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States