How long is the flight from St. Louis to Aspen?

Departing from St. Louis to Aspen will take you 5h 53m. There are 885 mi between St. Louis and Aspen. This flight may include one or multiple stops.

What are the cheapest airlines flying from St. Louis to Aspen round-trip?

Flying on American Airlines is currently your cheapest option to Aspen, with prices starting at $236. Another option worth looking into is United Airlines, starting at $298 round trip. American Airlines is currently priced 55% below the average price you’ll pay for this route.

In terms of precipitation, rainfall in Aspen ranges from 1.0 - 1.8 inches per month. April is typically the wettest month, when rainfall can reach 1.8 in. January is typically the driest time to visit Aspen when rainfall is around 1.0 in.

If weather is an important factor for your trip to Aspen, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 64.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 19.4 F).

What is the cheapest time of day to fly from STL to ASE?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from St. Louis to Aspen as you normally would.

Most accurate provider : When it comes to deals on St. Louis-Aspen flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on St. Louis-Aspen flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from St. Louis-Aspen flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on St. Louis-Aspen flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for St. Louis-Aspen flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Can I find deals for flights from St. Louis to Aspen that include hotel bookings?

Yes. In addition to deals on St. Louis to Aspen flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from St. Louis to Aspen?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Aspen.

Can I find deals for business class flights from St. Louis to Aspen?

Yes. Cheapflights offers flight deals from St. Louis to Aspen by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$199+ Flights from St. Louis to Aspen

Q: How much does it cost to fly round-trip from St. Louis to Aspen?

Airfare is below average for this route at the moment. St. Louis to Aspen flights typically cost between $331 and $472 in January. The cheapest round-trip price found within the last 3 days was $269 on Delta (Jan 20-Jan 24).

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1. Tell us where you want to go

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Cheap flight deals from St. Louis to Aspen

Most accurate provider	eDreams 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$269 (Delta)
One-way from	$199 (Delta)
Popular in	November
Cheapest in	December
Average price	$373

Provider with most accurate pricing for Lambert-St Louis-Aspen Pitkin County flight deals.

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Provider most trusted by Cheapflights users for Lambert-St Louis-Aspen Pitkin County flights.

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From Lambert-St Louis to Aspen Pitkin County

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One-way flight from Lambert-St Louis to Aspen Pitkin County

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High demand for flights, 3% potential price rise

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Cheapest flight prices on average. 5% potential price decrease ($27 potential savings vs. average RT price).

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Average for round-trip flights in January 2026

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Find flight deals from St. Louis to Aspen

Cheapest flights from St. Louis to Aspen
Explore the most affordable flight options available from St. Louis to Aspen. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 7, 2026.

Tue 1/206:00 amSTL - ASE

1 stop6h 43mDelta

Sat 1/243:04 pmASE - STL

1 stop7h 32mDelta

Deal found 1/5

$269

Fri 10/25:20 amSTL - ASE

1 stop6h 31mUnited Airlines

Tue 10/61:00 pmASE - STL

1 stop6h 59mUnited Airlines

Deal found 1/7

$299

Sat 2/2111:25 amSTL - ASE

2 stops10h 17mUnited Airlines

Thu 2/264:04 pmASE - STL

1 stop5h 55mUnited Airlines

Deal found 1/6

$304

Sat 1/249:25 amSTL - ASE

1 stop5h 53mAmerican Airlines

Mon 1/264:58 pmASE - STL

1 stop4h 57mAmerican Airlines

Deal found 1/4

$333

Tue 1/204:15 pmSTL - ASE

1 stop6h 44mUnited Airlines

Sat 1/247:45 amASE - STL

1 stop7h 18mUnited Airlines

Deal found 1/6

$339

Wed 1/286:30 amSTL - ASE

1 stop6h 25mUnited Airlines

Sun 2/18:53 amASE - STL

1 stop7h 02mUnited Airlines

Deal found 1/7

$364

Wed 1/216:00 amSTL - ASE

1 stop7h 12mUnited Airlines

Sun 1/2510:35 amASE - STL

1 stop5h 20mUnited Airlines

Deal found 1/6

$384

Best flights from St. Louis to Aspen
Discover carefully curated flight deals from St. Louis to Aspen that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated January 7, 2026.

Sat 2/219:55 amSTL - ASE

2 stops11h 47mUnited Airlines

Thu 2/2612:22 pmASE - STL

1 stop7h 04mUnited Airlines

Deal found 1/5

$304

Sat 1/249:25 amSTL - ASE

1 stop5h 53mAmerican Airlines

Mon 1/264:58 pmASE - STL

1 stop4h 57mAmerican Airlines

Deal found 1/4

$333

Tue 1/204:15 pmSTL - ASE

1 stop6h 44mUnited Airlines

Sat 1/2412:53 pmASE - STL

1 stop5h 34mUnited Airlines

Deal found 1/4

$339

Last-minute flights from St. Louis to Aspen
Discover last-minute flight deals from St. Louis to Aspen. Data last updated January 7, 2026 and is based on user searches.

Tue 1/206:00 amSTL - ASE

1 stop6h 43mDelta

Sat 1/243:04 pmASE - STL

1 stop7h 32mDelta

Deal found 1/5

$269

Tue 1/204:15 pmSTL - ASE

1 stop6h 44mUnited Airlines

Sat 1/247:45 amASE - STL

1 stop7h 18mUnited Airlines

Deal found 1/6

$339

Wed 1/216:00 amSTL - ASE

1 stop7h 12mUnited Airlines

Sun 1/2510:35 amASE - STL

1 stop5h 20mUnited Airlines

Deal found 1/6

$384

Sat 1/249:25 amSTL - ASE

1 stop5h 53mAmerican Airlines

Mon 1/264:58 pmASE - STL

1 stop4h 57mAmerican Airlines

Deal found 1/4

$333

Wed 1/286:30 amSTL - ASE

1 stop6h 25mUnited Airlines

Sun 2/18:53 amASE - STL

1 stop7h 02mUnited Airlines

Deal found 1/7

$364

Sat 2/2111:25 amSTL - ASE

2 stops10h 17mUnited Airlines

Thu 2/264:04 pmASE - STL

1 stop5h 55mUnited Airlines

Deal found 1/6

$304

One-way flights from St. Louis to Aspen
Search for one-way flight options from St. Louis to Aspen. Find affordable one-way fares based on user searches. Data last updated January 7, 2026.

Tue 3/36:00 amSTL - ASE

1 stop6h 46mDelta

Deal found 1/5

$199

Tue 3/39:23 amSTL - ASE

1 stop6h 29mAmerican Airlines

Deal found 1/5

$330

Fri 1/166:00 amSTL - ASE

1 stop9h 16mDelta

Deal found 1/6

$371

Tue 3/37:41 amSTL - ASE

2 stops26h 22mUnited Airlines

Deal found 1/5

$415

Tue 3/310:37 amSTL - ASE

3 stops27h 31mAlaska Airlines

Deal found 1/5

$479

Fri 1/161:35 pmSTL - ASE

3 stops30h 39mAlaska Airlines

Deal found 1/6

$630

Fly from

Fly to

Route

Depart

Return

Price

St. LouisAspen

STL - ASE

STLASE

Lambert-St Louis

Sat 2/21

9:55 am-8:42 pm

2 stops11h 47m

Aspen Pitkin County

Thu 2/26

12:22 pm-8:26 pm

1 stop7h 04m

$304

St. LouisAspen

STL - ASE

STLASE

Lambert-St Louis

Sat 1/24

9:25 am-2:18 pm

1 stop5h 53m

Aspen Pitkin County

Mon 1/26

4:58 pm-10:55 pm

1 stop4h 57m

$333

St. LouisAspen

STL - ASE

STLASE

Lambert-St Louis

Tue 1/20

4:15 pm-9:59 pm

1 stop6h 44m

Aspen Pitkin County

Sat 1/24

12:53 pm-7:27 pm

1 stop5h 34m

$339

St. LouisAspen

STL - ASE

STLASE

Lambert-St Louis

Tue 3/3

6:00 am-11:46 am

1 stop6h 46m

$199

St. LouisAspen

STL - ASE

STLASE

Lambert-St Louis

Fri 1/16

6:00 am-2:16 pm

1 stop9h 16m

$371

St. LouisAspen

STL - ASE

STLASE

Lambert-St Louis

Tue 3/3

7:41 am-9:03 am

2 stops26h 22m

$415

St. LouisAspen

STL - ASE

STLASE

Lambert-St Louis

Tue 3/3

10:37 am-1:08 pm

3 stops27h 31m

$479

St. LouisAspen

STL - ASE

STLASE

Lambert-St Louis

Fri 1/16

1:35 pm-7:14 pm

3 stops30h 39m

$630

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/5

Compare providers for flights from St. Louis to Aspen

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from St. Louis to Aspen in January.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy2 stars	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*1 star
eDreams	Price Accuracy3 stars	Trust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

Most accurate provider: When it comes to deals on St. Louis-Aspen flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on St. Louis-Aspen flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from St. Louis-Aspen flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on St. Louis-Aspen flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for St. Louis-Aspen flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from St. Louis to Aspen

Have a flexible travel schedule? Discover the best time to fly to Aspen from St. Louis with our price prediction graph.

Estimated round-trip price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from St. Louis to Aspen

What is the cheapest month to book a flight from St. Louis to Aspen?

Currently, February is the cheapest month in which you can book a flight from St. Louis to Aspen (average of $214). Flying from St. Louis to Aspen in July is currently the most expensive (average of $347). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

How much does it cost to fly round-trip from St. Louis to Aspen?

Reviews of airlines servicing Aspen

Read through reviews of airlines operating flights from St. Louis to Aspen, such as United Airlines and American Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

United Airlines

7.4

Good

9,138 reviews

Reviews

1 / 20

10.0

Excellent

Dane,Jan 2026

IAD - TYS

It was a short flight on a small express plane, so no time for amenities. Quickly on, quickly off. No complaints.

United Airlines

7.4

Good

9,138 reviews

United Airlines

7.4

Good

9,138 reviews

Reviews

1 / 20

10.0

Excellent

Dane,Jan 2026

IAD - TYS

It was a short flight on a small express plane, so no time for amenities. Quickly on, quickly off. No complaints.

American Airlines

7.2

Good

11,088 reviews

United Airlines

7.4

Good

9,138 reviews

Reviews

1 / 20

10.0

Excellent

Dane,Jan 2026

IAD - TYS

It was a short flight on a small express plane, so no time for amenities. Quickly on, quickly off. No complaints.

Related info for your journey

How long is the flight from St. Louis to Aspen?
Departing from St. Louis to Aspen will take you 5h 53m. There are 885 mi between St. Louis and Aspen. This flight may include one or multiple stops.
What are the cheapest airlines flying from St. Louis to Aspen round-trip?
Flying on American Airlines is currently your cheapest option to Aspen, with prices starting at $236. Another option worth looking into is United Airlines, starting at $298 round trip. American Airlines is currently priced 55% below the average price you’ll pay for this route.
Can I find deals for flights from St. Louis to Aspen that include hotel bookings?
Yes. In addition to deals on St. Louis to Aspen flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from St. Louis to Aspen?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Aspen.
Can I find deals for business class flights from St. Louis to Aspen?
Yes. Cheapflights offers flight deals from St. Louis to Aspen by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from St. Louis to Aspen?
Currently, February is the cheapest month in which you can book a flight from St. Louis to Aspen (average of $214). Flying from St. Louis to Aspen in July is currently the most expensive (average of $347). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Top 2 airlines flying from St. Louis to Aspen

Airline	Cheapest	Average	Flexibility	On-time
American Airlines	Cheapest$236	Average$392	FlexibilityNo cancel fee	On-time71%
United Airlines	Cheapest$298	Average$530	FlexibilityNo cancel fee	On-time69%

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$199+ Cheap flights from St. Louis to Aspen (STL - ASE)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/3. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from St. Louis to Aspen with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from St. Louis to Aspen

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from St. Louis to Aspen

Cheapest flights from St. Louis to AspenExplore the most affordable flight options available from St. Louis to Aspen. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 7, 2026.

Explore the most affordable flight options available from St. Louis to Aspen. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 7, 2026.

Cheapflights Fare Finder

Use the filters below to find and compare flights from St. Louis to Aspen that are best for you.

Compare providers for flights from St. Louis to Aspen

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from St. Louis to Aspen in January.

Best time to book a flight from St. Louis to Aspen

Have a flexible travel schedule? Discover the best time to fly to Aspen from St. Louis with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from St. Louis to Aspen

What is the cheapest month to book a flight from St. Louis to Aspen?

How much does it cost to fly round-trip from St. Louis to Aspen?

Reviews of airlines servicing Aspen

Get insights into the airlines that provide service to Aspen. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Aspen. Reviews last updated January 7, 2026.

Read through reviews of airlines operating flights from St. Louis to Aspen, such as United Airlines and American Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from St. Louis to Aspen. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

How long is the flight from St. Louis to Aspen?

What are the cheapest airlines flying from St. Louis to Aspen round-trip?

Can I find deals for flights from St. Louis to Aspen that include hotel bookings?

How can I find direct flights from St. Louis to Aspen?

Can I find deals for business class flights from St. Louis to Aspen?

What is the cheapest month to book a flight from St. Louis to Aspen?

Traveling to a place near Aspen?

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Alternative routes for St. Louis to Aspen

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Top 2 airlines flying from St. Louis to Aspen

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Cheapest flights from St. Louis to Aspen
Explore the most affordable flight options available from St. Louis to Aspen. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 7, 2026.