Cheap Flights from Alamosa (ALS) to St. Louis (STL)

Popular airlines from Alamosa, CO (ALS-San Luis Valley Regional) to St. Louis Lambert Intl. Airport (STL)

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Cheap Flights from Alamosa to St. Louis (ALS-STL)

Prices were available within the past 7 days and start at for one-way flights and $384 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

KEY LIME AIR DBA DENVER AIR CONNECTION
Sat, Sep 27 - Mon, Sep 29
ALS
Alamosa
STL
St. Louis
$384 Roundtrip, found 2 days ago
$384
Roundtrip
found 2 days ago
Select KEY LIME AIR DBA DENVER AIR CONNECTION flight, departing Sat, Sep 27 from Alamosa to St. Louis, returning Mon, Sep 29, priced at $384 found 2 days ago
KEY LIME AIR DBA DENVER AIR CONNECTION
Sat, Sep 27 - Mon, Sep 29
ALS
Alamosa
STL
St. Louis
$394 Roundtrip, found 2 days ago
$394
Roundtrip
found 2 days ago
Select KEY LIME AIR DBA DENVER AIR CONNECTION flight, departing Sat, Sep 27 from Alamosa to St. Louis, returning Mon, Sep 29, priced at $394 found 2 days ago
KEY LIME AIR DBA DENVER AIR CONNECTION
Sat, Sep 27 - Tue, Sep 30
ALS
Alamosa
STL
St. Louis
$401 Roundtrip, found 2 days ago
$401
Roundtrip
found 2 days ago
Select KEY LIME AIR DBA DENVER AIR CONNECTION flight, departing Sat, Sep 27 from Alamosa to St. Louis, returning Tue, Sep 30, priced at $401 found 2 days ago
KEY LIME AIR DBA DENVER AIR CONNECTION
Wed, Sep 24 - Mon, Sep 29
ALS
Alamosa
STL
St. Louis
$404 Roundtrip, found 2 days ago
$404
Roundtrip
found 2 days ago
Select KEY LIME AIR DBA DENVER AIR CONNECTION flight, departing Wed, Sep 24 from Alamosa to St. Louis, returning Mon, Sep 29, priced at $404 found 2 days ago
KEY LIME AIR DBA DENVER AIR CONNECTION
Mon, Sep 29 - Tue, Sep 30
ALS
Alamosa
STL
St. Louis
$410 Roundtrip, found 2 days ago
$410
Roundtrip
found 2 days ago
Select KEY LIME AIR DBA DENVER AIR CONNECTION flight, departing Mon, Sep 29 from Alamosa to St. Louis, returning Tue, Sep 30, priced at $410 found 2 days ago
KEY LIME AIR DBA DENVER AIR CONNECTION
Wed, Sep 24 - Wed, Oct 1
ALS
Alamosa
STL
St. Louis
$414 Roundtrip, found 2 days ago
$414
Roundtrip
found 2 days ago
Select KEY LIME AIR DBA DENVER AIR CONNECTION flight, departing Wed, Sep 24 from Alamosa to St. Louis, returning Wed, Oct 1, priced at $414 found 2 days ago
KEY LIME AIR DBA DENVER AIR CONNECTION
Sat, Aug 16 - Thu, Aug 21
ALS
Alamosa
STL
St. Louis
$414 Roundtrip, found 3 days ago
$414
Roundtrip
found 3 days ago
Select KEY LIME AIR DBA DENVER AIR CONNECTION flight, departing Sat, Aug 16 from Alamosa to St. Louis, returning Thu, Aug 21, priced at $414 found 3 days ago
KEY LIME AIR DBA DENVER AIR CONNECTION
Fri, Aug 15 - Tue, Aug 19
ALS
Alamosa
STL
St. Louis
$418 Roundtrip, found 3 days ago
$418
Roundtrip
found 3 days ago
Select KEY LIME AIR DBA DENVER AIR CONNECTION flight, departing Fri, Aug 15 from Alamosa to St. Louis, returning Tue, Aug 19, priced at $418 found 3 days ago
KEY LIME AIR DBA DENVER AIR CONNECTION
Thu, Aug 14 - Mon, Aug 18
ALS
Alamosa
STL
St. Louis
$419 Roundtrip, found 3 days ago
$419
Roundtrip
found 3 days ago
Select KEY LIME AIR DBA DENVER AIR CONNECTION flight, departing Thu, Aug 14 from Alamosa to St. Louis, returning Mon, Aug 18, priced at $419 found 3 days ago
KEY LIME AIR DBA DENVER AIR CONNECTION
Fri, Aug 15 - Mon, Aug 18
ALS
Alamosa
STL
St. Louis
$427 Roundtrip, found 3 days ago
$427
Roundtrip
found 3 days ago
Select KEY LIME AIR DBA DENVER AIR CONNECTION flight, departing Fri, Aug 15 from Alamosa to St. Louis, returning Mon, Aug 18, priced at $427 found 3 days ago
KEY LIME AIR DBA DENVER AIR CONNECTION
Thu, Aug 14 - Mon, Aug 18
ALS
Alamosa
STL
St. Louis
$429 Roundtrip, found 3 days ago
$429
Roundtrip
found 3 days ago
Select KEY LIME AIR DBA DENVER AIR CONNECTION flight, departing Thu, Aug 14 from Alamosa to St. Louis, returning Mon, Aug 18, priced at $429 found 3 days ago
KEY LIME AIR DBA DENVER AIR CONNECTION
Fri, Aug 15 - Sun, Aug 17
ALS
Alamosa
STL
St. Louis
$435 Roundtrip, found 3 days ago
$435
Roundtrip
found 3 days ago
Select KEY LIME AIR DBA DENVER AIR CONNECTION flight, departing Fri, Aug 15 from Alamosa to St. Louis, returning Sun, Aug 17, priced at $435 found 3 days ago
KEY LIME AIR DBA DENVER AIR CONNECTION
Thu, Aug 14 - Mon, Aug 18
ALS
Alamosa
STL
St. Louis
$439 Roundtrip, found 3 days ago
$439
Roundtrip
found 3 days ago
Select KEY LIME AIR DBA DENVER AIR CONNECTION flight, departing Thu, Aug 14 from Alamosa to St. Louis, returning Mon, Aug 18, priced at $439 found 3 days ago
KEY LIME AIR DBA DENVER AIR CONNECTION
Sun, Aug 17 - Tue, Aug 19
ALS
Alamosa
STL
St. Louis
$440 Roundtrip, found 3 days ago
$440
Roundtrip
found 3 days ago
Select KEY LIME AIR DBA DENVER AIR CONNECTION flight, departing Sun, Aug 17 from Alamosa to St. Louis, returning Tue, Aug 19, priced at $440 found 3 days ago
KEY LIME AIR DBA DENVER AIR CONNECTION
Wed, Sep 24 - Fri, Sep 26
ALS
Alamosa
STL
St. Louis
$441 Roundtrip, found 2 days ago
$441
Roundtrip
found 2 days ago
Select KEY LIME AIR DBA DENVER AIR CONNECTION flight, departing Wed, Sep 24 from Alamosa to St. Louis, returning Fri, Sep 26, priced at $441 found 2 days ago
KEY LIME AIR DBA DENVER AIR CONNECTION
Sat, Sep 27 - Sun, Sep 28
ALS
Alamosa
STL
St. Louis
$445 Roundtrip, found 2 days ago
$445
Roundtrip
found 2 days ago
Select KEY LIME AIR DBA DENVER AIR CONNECTION flight, departing Sat, Sep 27 from Alamosa to St. Louis, returning Sun, Sep 28, priced at $445 found 2 days ago
KEY LIME AIR DBA DENVER AIR CONNECTION
Thu, Aug 14 - Sun, Aug 17
ALS
Alamosa
STL
St. Louis
$447 Roundtrip, found 3 days ago
$447
Roundtrip
found 3 days ago
Select KEY LIME AIR DBA DENVER AIR CONNECTION flight, departing Thu, Aug 14 from Alamosa to St. Louis, returning Sun, Aug 17, priced at $447 found 3 days ago
KEY LIME AIR DBA DENVER AIR CONNECTION
Thu, Aug 14 - Mon, Aug 18
ALS
Alamosa
STL
St. Louis
$449 Roundtrip, found 3 days ago
$449
Roundtrip
found 3 days ago
Select KEY LIME AIR DBA DENVER AIR CONNECTION flight, departing Thu, Aug 14 from Alamosa to St. Louis, returning Mon, Aug 18, priced at $449 found 3 days ago
KEY LIME AIR DBA DENVER AIR CONNECTION
Wed, Sep 24 - Fri, Oct 3
ALS
Alamosa
STL
St. Louis
$451 Roundtrip, found 2 days ago
$451
Roundtrip
found 2 days ago
Select KEY LIME AIR DBA DENVER AIR CONNECTION flight, departing Wed, Sep 24 from Alamosa to St. Louis, returning Fri, Oct 3, priced at $451 found 2 days ago
KEY LIME AIR DBA DENVER AIR CONNECTION
Wed, Sep 24 - Sun, Sep 28
ALS
Alamosa
STL
St. Louis
$454 Roundtrip, found 2 days ago
$454
Roundtrip
found 2 days ago
Select KEY LIME AIR DBA DENVER AIR CONNECTION flight, departing Wed, Sep 24 from Alamosa to St. Louis, returning Sun, Sep 28, priced at $454 found 2 days ago
Flights from Alamosa (ALS) to St. Louis (STL)
Origin airport
San Luis Valley Regional
Destination airport
Lambert-St. Louis Intl.
Roundtrip price
$384
Distance
846 mi

Frequently asked questions

How much does a flight from San Luis Valley Regional Airport (ALS) to Lambert-St. Louis Intl. Airport (STL) cost?
Discover the latest flight deals from ALS to STL by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from ALS to STL?
The cheapest flights from ALS to STL are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
What is the cheapest airline that flies from ALS to STL?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll take you from ALS to STL. Sort your results by "Price (lowest to highest)" to snap up a great deal.
How many flights per day from San Luis Valley Regional Airport (ALS) to Lambert-St. Louis Intl. Airport (STL)?
You'll have to hop on a flight with a layover if you're traveling from San Luis Valley Regional Airport (ALS) to Lambert-St. Louis Intl. Airport (STL). There are no daily direct flights on this route. However, simply filter your search to include one or two stops to discover the best option for your trip.
What day of the week has the most flights from ALS to STL?
Typically you'll find the greatest selection of flight options on a Friday. Tuesdays are often the quietest.* But this can change based on the season, carrier and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from San Luis Valley Regional Airport (ALS) to Lambert-St. Louis Intl. Airport (STL)?
Choose a flight from San Luis Valley Regional Airport (ALS) to Lambert-St. Louis Intl. Airport (STL) that leaves before 3 PM to reduce the risk of cancellations. Departures after this time have a 22% higher chance of being canceled, on average.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from San Luis Valley Regional Airport (ALS) to Lambert-St. Louis Intl. Airport (STL) last-minute?
Booking your ticket from ALS to STL just before your journey is usually more expensive. However, if there's some wiggle room with your departure times and dates, you could bag a cheap last-minute fare.
Is it cheaper to book an ALS to STL flight and hotel package?
You can save money by securing an ALS to STL flight and hotel package compared to booking separately. In fact, travelers could save hundreds of dollars by bundling with Expedia. And it's easy to manage everything in one convenient place. Once you've selected your ideal accommodations and flights, consider adding extras like tours, activities and car rentals.
Can I cancel or change the date of my flight from San Luis Valley Regional Airport (ALS) to Lambert-St. Louis Intl. Airport (STL)?
If you booked your ALS to STL flight in the last 24 hours, you may be able to cancel or modify it at no cost. Depending on the airline and the fare type you purchased, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, visit our Customer Service portal if you want more information.

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