American Airlines offers flights from Saint Louis to Aspen. Browse available flight options and fares between Lambert-St Louis Int'l Airport (STL) and Aspen-Pitkin County Airport (ASE) for business trips, family visits and short getaways.
Compare fares and schedules and choose the option that fits your trip to Aspen (ASE). Prices and availability may change based on travel dates and demand.
Saint Louis (STL)to
Round trip
Economy
Saint Louis (STL)to
Round trip
Economy
Saint Louis (STL)to
Round trip
Economy
Saint Louis (STL)to
Round trip
Economy
Saint Louis (STL)to
Round trip
Economy
Saint Louis (STL)to
Round trip
Economy
Saint Louis (STL)to
Round trip
Economy
Saint Louis (STL)to
Round trip
Economy
*Fares displayed have been collected within the last 24hrs and may no longer be available at time of booking. Some fares listed may include one or more connections that are Basic Economy, which class is subject to additional terms and conditions. Modifying this information may result in a different fare. To find the most updated fare, please visit aa.com. Additional baggage fees and charges for optional products and services may apply.
Saving on flights
Finding lower fares often depends on timing, flexibility and travel demand. These tips can make it easier to compare options and identify flights that fit your plans.
Booking 1 to 3 months ahead can help you find lower fares on flights to Aspen.
Midweek flights, such as Tuesdays or Wednesdays, can sometimes offer lower fares.
Off-peak seasons tend to be more affordable. If travel demand is higher during holidays or major events, consider less busy times for lower fares.
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Before your flight
Review these tips to prepare for your trip and get ready for your departure.
When to arrive
Arrive at least 2 hours before domestic flights. For international travel, plan for 3 hours before departure.
Check-in
Check in online or on the American app to download your boarding pass or print it before you arrive.
Flight info
Check your terminal and gate before you go and watch for updates in the app or on airport displays.
Documents
Bring a valid ID to pass through security. Make sure your travel details match your identification.
Airport experience
Allow extra time to reach your gate and get through security before boarding begins.
Amenities
Many airports offer dining, charging stations and other services to help you prepare for your trip before boarding.
Airport information
American flies to Aspen / Pitkin County Airport (ASE), located about 3 miles northwest of Aspen. The airport offers easy access to the city center, ski resorts and neighborhoods throughout the Roaring Fork Valley.
Getting from the airport
Travelers can reach downtown Aspen and nearby areas by public transit, taxi or rideshare, rental car or hotel shuttle.
For the latest transportation information, visit Aspen / Pitkin County Airport’s official website.
RFTA (Roaring Fork Transportation Authority) Route E connects ASE with downtown Aspen and other valley destinations. Bus stops are located outside the terminal, with travel times of about 10-15 minutes.
Many hotels offer shuttle service between ASE and their locations. Pickup zones are outside arrivals; travelers should confirm shuttle schedules with their hotel.
Taxis and app-based rideshare services are available curbside outside arrivals. Pickup zones are located just outside the main entrance.
Rental car counters are located inside the terminal near baggage claim. Vehicles are parked in the adjacent lot for convenient access.
Upgrade options
Make your trip more comfortable with Main Cabin Extra. Discover how Main Cabin Extra can enhance your trip.
More space with seats at the front of the Main Cabin or in exit rows.
Preferred Group 5 boarding allows easier access to overhead bins.
Enjoy beer, wine and spirits on flights with full beverage service.
Quick answers
Use the fare calendar and flight search tools on this page to compare prices across different travel dates. Adjusting your departure or return date may help you find more flight options and fares that fit your budget.
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