$203 Cheap Flights from Phoenix (PHX) to Alamosa (ALS)

View $203 flight on Wed, Dec 24, 2025Opens in a new window

Popular airlines from Phoenix Sky Harbor Intl. Airport (PHX) to Alamosa, CO (ALS-San Luis Valley Regional)

Cheap Flights from Phoenix to Alamosa (PHX-ALS)

Prices were available within the past 7 days and start at $203 for one-way flights and $404 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Wed, Dec 31 - Sat, Jan 17
PHX
Phoenix
ALS
Alamosa
$404 Roundtrip, found 6 days ago
$404
Roundtrip
found 6 days ago
Select United flight, departing Wed, Dec 31 from Phoenix to Alamosa, returning Sat, Jan 17, priced at $404 found 6 days ago
Contour Airlines
Tue, Nov 18 - Thu, Dec 4
PHX
Phoenix
ALS
Alamosa
$405 Roundtrip, found 6 days ago
$405
Roundtrip
found 6 days ago
Select Contour Airlines flight, departing Tue, Nov 18 from Phoenix to Alamosa, returning Thu, Dec 4, priced at $405 found 6 days ago
United
Thu, Dec 18 - Wed, Dec 31
PHX
Phoenix
ALS
Alamosa
$409 Roundtrip, found 6 days ago
$409
Roundtrip
found 6 days ago
Select United flight, departing Thu, Dec 18 from Phoenix to Alamosa, returning Wed, Dec 31, priced at $409 found 6 days ago
United
Tue, Dec 30 - Mon, Jan 12
PHX
Phoenix
ALS
Alamosa
$414 Roundtrip, found 6 days ago
$414
Roundtrip
found 6 days ago
Select United flight, departing Tue, Dec 30 from Phoenix to Alamosa, returning Mon, Jan 12, priced at $414 found 6 days ago
Contour Airlines
Mon, Nov 24 - Thu, Dec 4
PHX
Phoenix
ALS
Alamosa
$425 Roundtrip, found 1 day ago
$425
Roundtrip
found 1 day ago
Select Contour Airlines flight, departing Mon, Nov 24 from Phoenix to Alamosa, returning Thu, Dec 4, priced at $425 found 1 day ago
Delta
Thu, Nov 27 - Mon, Dec 8
PHX
Phoenix
ALS
Alamosa
$429 Roundtrip, found 6 days ago
$429
Roundtrip
found 6 days ago
Select Delta flight, departing Thu, Nov 27 from Phoenix to Alamosa, returning Mon, Dec 8, priced at $429 found 6 days ago
Contour Airlines
Tue, Nov 18 - Sat, Dec 6
PHX
Phoenix
ALS
Alamosa
$436 Roundtrip, found 6 days ago
$436
Roundtrip
found 6 days ago
Select Contour Airlines flight, departing Tue, Nov 18 from Phoenix to Alamosa, returning Sat, Dec 6, priced at $436 found 6 days ago
Contour Airlines
Wed, Nov 19 - Thu, Dec 4
PHX
Phoenix
ALS
Alamosa
$445 Roundtrip, found 6 days ago
$445
Roundtrip
found 6 days ago
Select Contour Airlines flight, departing Wed, Nov 19 from Phoenix to Alamosa, returning Thu, Dec 4, priced at $445 found 6 days ago
Contour Airlines
Fri, Nov 21 - Mon, Dec 8
PHX
Phoenix
ALS
Alamosa
$455 Roundtrip, found 1 day ago
$455
Roundtrip
found 1 day ago
Select Contour Airlines flight, departing Fri, Nov 21 from Phoenix to Alamosa, returning Mon, Dec 8, priced at $455 found 1 day ago
Contour Airlines
Thu, Nov 20 - Sat, Dec 6
PHX
Phoenix
ALS
Alamosa
$456 Roundtrip, found 1 day ago
$456
Roundtrip
found 1 day ago
Select Contour Airlines flight, departing Thu, Nov 20 from Phoenix to Alamosa, returning Sat, Dec 6, priced at $456 found 1 day ago

Frequently asked questions

How much does a flight from Sky Harbor Intl. Airport (PHX) to San Luis Valley Regional Airport (ALS) cost?
Snag a cheap one-way flight from $203 or cheap return flight from $404 from Sky Harbor Intl. Airport (PHX) to San Luis Valley Regional Airport (ALS) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from Sky Harbor Intl. Airport (PHX) to San Luis Valley Regional Airport (ALS)?
The cheapest month to fly from PHX to ALS is December, when demand is low. Off-peak months are typically when airlines offer better prices between these airports.
What is the cheapest airline that flies from Sky Harbor Intl. Airport (PHX) to San Luis Valley Regional Airport (ALS)?
Expedia's filter tool lets you easily compare airlines, flight times and fares all in one place. Select your preferences, then sort by "Price (lowest to highest)" to find the carrier with the cheapest PHX to ALS flight.
How many flights per day from Sky Harbor Intl. Airport (PHX) to San Luis Valley Regional Airport (ALS)?
Nonstop flights from Sky Harbor Intl. Airport (PHX) to San Luis Valley Regional Airport (ALS) aren't available daily, so you'll need to take a flight with a layover. Explore your options with Expedia's filter tool. Enter your travel details and choose either "1 Stop" or "2+ Stops."
What day of the week has the most flights from PHX to ALS?
Friday is typically the busiest day for flights, while Tuesday tends to be the quietest.* Remember that flight schedules can change based on a number of factors, including the time of year and airline.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Sky Harbor Intl. Airport (PHX) to San Luis Valley Regional Airport (ALS)?
To arrive at San Luis Valley Regional Airport (ALS) without delays, select a flight that leaves from Sky Harbor Intl. Airport (PHX) before 3 PM. The chance of cancellations is 22% higher, on average, for departures after this hour.**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 Sky Harbor Intl. Airport (PHX) to San Luis Valley Regional Airport (ALS) last-minute?
Holding off until just before your trip to book a flight from PHX to ALS often results in higher prices. While you may find some last-minute discounts, they aren't always guaranteed. Keep your travel plans flexible for the best chance of landing a bargain.
Is it cheaper to book a PHX to ALS flight and hotel package?
Opting for a PHX to ALS flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your travels all in one place. Choose from our extensive range of hotels and then add activities, flights and car rentals to your booking. Bundle it all together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Sky Harbor Intl. Airport (PHX) to San Luis Valley Regional Airport (ALS)?
In most instances, you're able to cancel or reschedule your PHX to ALS flight. However, additional fees may apply, especially if you made your booking more than 24 hours ago. Check your itinerary for the airline's guidelines and fees on flight changes, or if you want further details, go to our Customer Service portal.

Travel information

Origin airport
Sky Harbor Intl.
Destination airport
San Luis Valley Regional
Roundtrip price
$404
Distance
442 mi

Book with confidence

Phoenix to Alamosa Flights

The cheapest times to fly from Phoenix to Alamosa

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Phoenix to Alamosa are during the month of December. You can find some of the cheapest flights from Phoenix to Alamosa with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Phoenix to Alamosa

Sunday is one of the best days to book for cheap flights from Phoenix to Alamosa: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Phoenix to Alamosa

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Phoenix to Alamosa in 2025. You can also book with separate airlines for your outbound and return journeys, from $203 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Phoenix to Alamosa flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Phoenix to Alamosa airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Phoenix to Alamosa Flights

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*Available to One Key members.