Latest deals
When to book
FAQs
Price Alerts

Cheap flights from Aspen to St. Louis from $329

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Aspen to St. Louis departing on 8/27. 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
0 bags

Find the cheapest flights from Aspen to St. Louis

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
2:17 pm - 8:39 pm
ASE
-
STL
5h 22m
1 stop
United Airlines Logo
1:36 pm - 6:43 pm
STL
-
ASE
6h 07m
1 stop
$329United Airlines
Thu, Aug 27 - Mon, Aug 31
Delta Logo
8:05 am - 3:57 pm
ASE
-
STL
6h 52m
1 stop
Delta Logo
6:00 am - 11:21 am
STL
-
ASE
6h 21m
1 stop
$364Delta
Thu, Aug 27 - Mon, Aug 31
Delta Logo
8:05 am - 3:57 pm
ASE
-
STL
6h 52m
1 stop
Delta Logo
6:00 am - 11:21 am
STL
-
ASE
6h 21m
1 stop
$389Delta
Thu, Aug 27 - Mon, Aug 31
United Airlines Logo
2:17 pm - 8:39 pm
ASE
-
STL
5h 22m
1 stop
United Airlines Logo
1:18 pm - 9:21 pm
STL
-
ASE
9h 03m
2 stops
$414United Airlines
Thu, Aug 27 - Mon, Aug 31
United Airlines Logo
6:12 pm - 11:50 pm
ASE
-
STL
4h 38m
1 stop
United Airlines Logo
1:18 pm - 9:21 pm
STL
-
ASE
9h 03m
2 stops
$449United Airlines
Thu, Aug 27 - Mon, Aug 31
United Airlines Logo
1:14 pm - 9:22 pm
ASE
-
STL
7h 08m
2 stops
United Airlines Logo
6:00 am - 3:08 pm
STL
-
ASE
10h 08m
2 stops
$454United Airlines
Thu, Aug 27 - Mon, Aug 31
United Airlines Logo
1:14 pm - 9:22 pm
ASE
-
STL
7h 08m
2 stops
United Airlines Logo
1:18 pm - 9:21 pm
STL
-
ASE
9h 03m
2 stops
$479United Airlines
Thu, Aug 27 - Mon, Aug 31
United Airlines Logo
1:14 pm - 9:22 pm
ASE
-
STL
7h 08m
2 stops
United Airlines Logo
1:18 pm - 9:21 pm
STL
-
ASE
9h 03m
2 stops
$515United Airlines
Thu, Aug 27 - Mon, Aug 31

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 Aspen to St. Louis

Our best United Airlines deals on Aspen to St. Louis flight tickets
United Airlines
Aug 27
ASE2:17 pmAspen Pitkin County
5h 22m
1 stop
STL8:39 pmLambert-St Louis
Aug 31
STL1:36 pmLambert-St Louis
6h 07m
1 stop
ASE6:43 pmAspen Pitkin County
$329
United Airlines
Aug 27
ASE2:17 pmAspen Pitkin County
5h 22m
1 stop
STL8:39 pmLambert-St Louis
Aug 31
STL1:18 pmLambert-St Louis
9h 03m
2 stops
ASE9:21 pmAspen Pitkin County
$414
United Airlines
Aug 27
ASE6:12 pmAspen Pitkin County
4h 38m
1 stop
STL11:50 pmLambert-St Louis
Aug 31
STL1:18 pmLambert-St Louis
9h 03m
2 stops
ASE9:21 pmAspen Pitkin County
$449

Delta flights from Aspen to St. Louis

Our best Delta deals on Aspen to St. Louis flight tickets
Delta
Aug 27
ASE8:05 amAspen Pitkin County
6h 52m
1 stop
STL3:57 pmLambert-St Louis
Aug 31
STL6:00 amLambert-St Louis
6h 21m
1 stop
ASE11:21 amAspen Pitkin County
$364
Delta
Aug 27
ASE8:05 amAspen Pitkin County
6h 52m
1 stop
STL3:57 pmLambert-St Louis
Aug 31
STL6:00 amLambert-St Louis
6h 21m
1 stop
ASE11:21 amAspen Pitkin County
$389

momondo Fare Finder

 
Customize your flight search to find flights from Aspen to St. Louis 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 April 25, 2026.
Use the filters below to find and compare flights from Aspen to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

AspenSt. Louis

ASE - STL

ASESTL

Aspen Pitkin County

Thu 8/27

2:17 pm-8:39 pm

1 stop5h 22m

Lambert-St Louis

Mon 8/31

1:36 pm-6:43 pm

1 stop6h 07m

$329

AspenSt. Louis

ASE - STL

ASESTL

Aspen Pitkin County

Thu 8/27

8:05 am-3:57 pm

1 stop6h 52m

Lambert-St Louis

Mon 8/31

6:00 am-11:21 am

1 stop6h 21m

$364

AspenSt. Louis

ASE - STL

ASESTL

Aspen Pitkin County

Thu 8/27

8:05 am-3:57 pm

1 stop6h 52m

Lambert-St Louis

Mon 8/31

6:00 am-11:21 am

1 stop6h 21m

$389

AspenSt. Louis

ASE - STL

ASESTL

Aspen Pitkin County

Thu 8/27

2:17 pm-8:39 pm

1 stop5h 22m

Lambert-St Louis

Mon 8/31

1:18 pm-9:21 pm

2 stops9h 03m

$414

AspenSt. Louis

ASE - STL

ASESTL

Aspen Pitkin County

Thu 8/27

6:12 pm-11:50 pm

1 stop4h 38m

Lambert-St Louis

Mon 8/31

1:18 pm-9:21 pm

2 stops9h 03m

$449

AspenSt. Louis

ASE - STL

ASESTL

Aspen Pitkin County

Thu 8/27

1:14 pm-9:22 pm

2 stops7h 08m

Lambert-St Louis

Mon 8/31

6:00 am-3:08 pm

2 stops10h 08m

$454

AspenSt. Louis

ASE - STL

ASESTL

Aspen Pitkin County

Thu 8/27

1:14 pm-9:22 pm

2 stops7h 08m

Lambert-St Louis

Mon 8/31

1:18 pm-9:21 pm

2 stops9h 03m

$479

AspenSt. Louis

ASE - STL

ASESTL

Aspen Pitkin County

Thu 8/27

1:14 pm-9:22 pm

2 stops7h 08m

Lambert-St Louis

Mon 8/31

1:18 pm-9:21 pm

2 stops9h 03m

$515

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

When to book flights from Aspen to St. Louis

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

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

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

Fastest flight time

6h 52m

Direct flights

None
The fastest flight from Aspen to St. Louis takes 6h 52m
There are no direct flights from Aspen to St. Louis. There are no popular flight routes from Aspen to St. Louis.
Search flight deals

Frequently asked questions about flying from Aspen to St. Louis

  • How far is Aspen Pitkin County to Lambert-St Louis by plane?

    Aspen Pitkin County and Lambert-St Louis are 892.5 mi apart from one another. Flights usually cover this in 6h 52m, depending on flying conditions and air traffic around both airports.

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

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

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

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Aspen Pitkin County Airport to Lambert-St Louis Airport.

  • What documentation or ID do you need to fly to Lambert-St Louis Airport?

    The travel and health documents required for your trip to Lambert-St Louis Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Lambert-St Louis Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Frequently asked questions about flying from Aspen to St. Louis

  • How do I get Price Alerts for flights from Aspen to St. Louis?

    Price Alerts will notify you by email when the price for flights to St. Louis from Aspen decreases. To activate this, select your desired travel dates and search for offers. While browsing through offers you’ll see the Price Alert widget toggle. Click it to turn on notifications.

  • How can I save money on flights from Aspen to St. Louis with momondo?

    By using tools like our “Price Calendar”, you can see the best day to fly round-trip for your travels. Our “Price Forecast” tool uses AI to predict whether you should purchase or hold off on booking for potentially cheaper prices. Explore shows you all flight options from a city or airport to build your own unique adventure. The Discover blog also provides valuable insights for saving money while booking your experience. After searching you can toggle on “Price Alerts” to track prices for your desired flight and book at the ideal moment.

  • How does momondo find its flight prices?

    We show prices from over 700+ competitors with a single click. With options from airlines and OTAs from across our 30 international markets, we are able to show you a diverse range of deals to create your adventure.

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
St. Charles
Chesterfield
Hermann
Fairview Heights
Maryland Heights
O'Fallon
Florissant
St. Peters
Collinsville
Wentzville
Alton
Fenton
Farmington
Festus
Clayton
Eureka
Litchfield
Edwardsville
Shrewsbury
Grafton

Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to St. Louis from Aspen.

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

momondo does allow users to show only those flights to St. Louis from Aspen which offer a flexible booking policy as well as other useful filters and features.

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

Once you have performed a search for Aspen to St. Louis flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

If you are simply researching potential flights to St. Louis, momondo offers a useful price alert feature which will track prices for flights to St. Louis from Aspen and alert you when they change.

An easier way to manage your St. Louis 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
Mon 5/25
Mon 6/1
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States