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$246 Cheap Flights from Alamosa (ALS) to Phoenix (PHX)

View $246 flight on Mon, Aug 31, 2026Opens in a new window

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

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Cheap Flights from Alamosa to Phoenix (ALS-PHX)

Prices were available within the past 7 days and start at $246 for one-way flights and $627 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

KEY LIME AIR DBA DENVER AIR CONNECTION
Thu, Jul 30 - Thu, Aug 6
ALS
Alamosa
PHX
Phoenix
$627 Roundtrip, found 17 hours ago
$627
Roundtrip
found 17 hours ago
Select KEY LIME AIR DBA DENVER AIR CONNECTION flight, departing Thu, Jul 30 from Alamosa to Phoenix, returning Thu, Aug 6, priced at $627 found 17 hours ago
KEY LIME AIR DBA DENVER AIR CONNECTION
Thu, Jul 30 - Thu, Aug 6
ALS
Alamosa
PHX
Phoenix
$637 Roundtrip, found 17 hours ago
$637
Roundtrip
found 17 hours ago
Select KEY LIME AIR DBA DENVER AIR CONNECTION flight, departing Thu, Jul 30 from Alamosa to Phoenix, returning Thu, Aug 6, priced at $637 found 17 hours ago
KEY LIME AIR DBA DENVER AIR CONNECTION
Thu, Jul 30 - Thu, Aug 6
ALS
Alamosa
PHX
Phoenix
$648 Roundtrip, found 17 hours ago
$648
Roundtrip
found 17 hours ago
Select KEY LIME AIR DBA DENVER AIR CONNECTION flight, departing Thu, Jul 30 from Alamosa to Phoenix, returning Thu, Aug 6, priced at $648 found 17 hours ago
KEY LIME AIR DBA DENVER AIR CONNECTION
Thu, Jul 30 - Thu, Aug 6
ALS
Alamosa
PHX
Phoenix
$652 Roundtrip, found 17 hours ago
$652
Roundtrip
found 17 hours ago
Select KEY LIME AIR DBA DENVER AIR CONNECTION flight, departing Thu, Jul 30 from Alamosa to Phoenix, returning Thu, Aug 6, priced at $652 found 17 hours ago
KEY LIME AIR DBA DENVER AIR CONNECTION
Thu, Jul 30 - Thu, Aug 6
ALS
Alamosa
PHX
Phoenix
$653 Roundtrip, found 17 hours ago
$653
Roundtrip
found 17 hours ago
Select KEY LIME AIR DBA DENVER AIR CONNECTION flight, departing Thu, Jul 30 from Alamosa to Phoenix, returning Thu, Aug 6, priced at $653 found 17 hours ago
KEY LIME AIR DBA DENVER AIR CONNECTION
Thu, Jul 30 - Thu, Aug 6
ALS
Alamosa
PHX
Phoenix
$657 Roundtrip, found 17 hours ago
$657
Roundtrip
found 17 hours ago
Select KEY LIME AIR DBA DENVER AIR CONNECTION flight, departing Thu, Jul 30 from Alamosa to Phoenix, returning Thu, Aug 6, priced at $657 found 17 hours ago
KEY LIME AIR DBA DENVER AIR CONNECTION
Thu, Jul 30 - Thu, Aug 6
ALS
Alamosa
PHX
Phoenix
$672 Roundtrip, found 17 hours ago
$672
Roundtrip
found 17 hours ago
Select KEY LIME AIR DBA DENVER AIR CONNECTION flight, departing Thu, Jul 30 from Alamosa to Phoenix, returning Thu, Aug 6, priced at $672 found 17 hours ago
KEY LIME AIR DBA DENVER AIR CONNECTION
Thu, Jul 30 - Thu, Aug 6
ALS
Alamosa
PHX
Phoenix
$682 Roundtrip, found 17 hours ago
$682
Roundtrip
found 17 hours ago
Select KEY LIME AIR DBA DENVER AIR CONNECTION flight, departing Thu, Jul 30 from Alamosa to Phoenix, returning Thu, Aug 6, priced at $682 found 17 hours ago
KEY LIME AIR DBA DENVER AIR CONNECTION
Fri, Jul 24 - Fri, Jul 31
ALS
Alamosa
PHX
Phoenix
$692 Roundtrip, found 6 days ago
$692
Roundtrip
found 6 days ago
Select KEY LIME AIR DBA DENVER AIR CONNECTION flight, departing Fri, Jul 24 from Alamosa to Phoenix, returning Fri, Jul 31, priced at $692 found 6 days ago
KEY LIME AIR DBA DENVER AIR CONNECTION
Wed, Jul 29 - Thu, Jul 30
ALS
Alamosa
PHX
Phoenix
$695 Roundtrip, found 1 day ago
$695
Roundtrip
found 1 day ago
Select KEY LIME AIR DBA DENVER AIR CONNECTION flight, departing Wed, Jul 29 from Alamosa to Phoenix, returning Thu, Jul 30, priced at $695 found 1 day ago

What you need to know for your flight from San Luis Valley Regional to Sky Harbor Intl.

Alamosa (ALS) to Phoenix (PHX) at a glance

Travel from Alamosa (ALS) to Phoenix (PHX) with a selection of airlines on this domestic short-haul route. Explore various options, including full-service carriers, to discover the itinerary that aligns with your budget and schedule while you enjoy Phoenix's iconic attractions and neighborhoods. Check out the essential details for flights from San Luis Valley Regional Airport (ALS) to Sky Harbor International Airport (PHX) to find the best choices for your journey.

  • Fastest flight duration: around 3 hours in-flight, plus roughly 2h 15m layover with one stop
  • Route distance: roughly 450 miles (725 km)
  • Flights per week: around 7 departures on average
  • Typical fares (one-way): economy tickets often range from $200–$385, depending on seasonality and how far ahead you book

Flights from San Luis Valley Regional Airport (ALS) to Sky Harbor International Airport (PHX)

Based on recent traveler bookings, here are the top airlines flying from Alamosa to Phoenix, often favored for their one-stop services with a common layover at Denver International Airport (DEN), which lasts about 2 hours and 15 minutes. This flexibility allows you to balance price, total travel time, and cabin class to secure the best itinerary for your journey.

  • United: This full-service airline provides a convenient one-stop travel option, with one-way ticket prices generally falling between $200 and $410. United operates around 58% of flights on this route, featuring an in-flight duration of 3 hours and a total travel time of approximately 5 hours and 15 minutes, including layovers.
  • American Airlines: Another robust choice, American Airlines offers one-stop service with one-way fares typically ranging from $210 to $325. Representing about 42% of departures for this route, it has an in-flight time of 3 hours and a complete journey duration of roughly 5 hours and 15 minutes, factoring in layover time.

Alternative routes from Alamosa (ALS) to Phoenix (PHX)

  • Alamosa to Scottsdale (ALS-SCF): Located approximately 14 miles from Sky Harbor International Airport (PHX), Scottsdale Airport (SCF) serves as a convenient alternative for travelers.
  • Alamosa to Mesa (ALS-MSC): Falcon Field Municipal Airport (MSC) lies around 16 miles from Sky Harbor International Airport (PHX), offering another viable route for passengers.

How to find the best prices for flights from Alamosa (ALS) to Phoenix (PHX)

Getting some of the best deals on flights from Alamosa to Phoenix is all about timing and flexibility. Here are some key tips to help you save:

  1. Best times to book and fly: cheaper fares are usually available when booking 2-8 weeks in advance, which coincides with when most travelers make their reservations. Departures in the afternoon (12pm-6pm) tend to offer lower prices and are popular flight times. Additionally, flying on Sunday often results in cheaper fares, although Monday remains the most popular travel day.
  2. Set up price alerts: stay updated on price changes by using Expedia's Price Tracker. Receive alerts when fares drop for your selected route.
  3. Bundle and save: bundle your flight and hotel to save on Expedia, or unlock a hotel deal after booking your flight.*
  4. Compare flight options: use Expedia's search tool to compare airlines, routes, direct vs. non-direct flights, and flight times. You can also sort by price to find the most affordable options.
  5. Stay flexible with dates: being open to different travel days can sometimes help you find better prices on flights and hotels.
  6. Think about luggage: nowadays, it's important to check the airline's baggage policies to find the best value. That may be paying for an additional carry-on bag or booking a ticket with checked luggage included. Either way, double-check your allowance before confirming your booking to avoid excess baggage fees at the airport.

*Members only. Savings vary and are not available on all bundles. Select hotels.

Arriving at Sky Harbor International Airport from San Luis Valley Regional Airport

Phoenix welcomes travelers from Alamosa with a range of transport options based on price, convenience, and proximity. Here's how to reach Phoenix efficiently:

  • Hotel transfer: Transfers offer a convenient way to reach your hotel in Phoenix, with private rides that can be arranged in advance.
  • Car rental: Renting a car from Sky Harbor International Airport is a great option if you plan to explore and sightsee beyond the city. Browse cheap car rentals at Sky Harbor International Airport on Expedia.
  • Taxi/ride-hailing: Taxis and ride-hailing services may be available from designated pickup areas outside the terminal, check locally on arrival.
  • Public transportation: From Sky Harbor International Airport, both Terminal 3 Station, a metro station, and Phoenix Airport Bus Stop, a bus station, are conveniently located within walking distance, with Terminal 3 Station about 0.1 miles away and Phoenix Airport Bus Stop approximately 0.2 miles away on foot.

Frequently asked questions

How much does a flight from Alamosa, CO (ALS-San Luis Valley Regional) to Phoenix, AZ (PHX-Sky Harbor Intl.) cost?
You can find cheap one-way flights from $246 and cheap return flights from $627 Alamosa, CO (ALS-San Luis Valley Regional) to Phoenix, AZ (PHX-Sky Harbor Intl.) with Expedia. One-way flights usually range from $203 to $1478, and return flights typically cost between $417 and $1233. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when Alamosa, CO (ALS-San Luis Valley Regional) to Phoenix, AZ (PHX-Sky Harbor Intl.) ticket fares go up or down.*Typical price ranges based on flights available on Expedia in the last year. Prices include multi-airline options.
What is the cheapest month to fly from Alamosa, CO (ALS-San Luis Valley Regional) to Phoenix, AZ (PHX-Sky Harbor Intl.)?
The cheapest month to fly from ALS to PHX is July when demand is low. Traveling in off-peak or shoulder months is usually a good way to secure cheap tickets, just remember to avoid flying during holidays if you're able to. Use the calendar view in your search to see which months have low fares on this route.
Which airlines fly direct from Alamosa, CO (ALS-San Luis Valley Regional) to Phoenix, AZ (PHX-Sky Harbor Intl.)?
Enter ALS to PHX and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
What is the cheapest airline that flies from Alamosa, CO (ALS-San Luis Valley Regional) to Phoenix, AZ (PHX-Sky Harbor Intl.)?
Key Lime Air is one of the cheapest airlines offering connecting flights from Alamosa (ALS) to Phoenix (PHX), with round-trip tickets starting from around $386 with a layover in Denver Intl. (DEN). Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.*Prices based on flights available on Expedia in the last year.
How do I find cheap flights from Alamosa, CO (ALS-San Luis Valley Regional) to Phoenix, AZ (PHX-Sky Harbor Intl.)?
To find a cheap flight from Alamosa, CO (ALS-San Luis Valley Regional) to Phoenix, AZ (PHX-Sky Harbor Intl.), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best time to fly from Alamosa, CO (ALS-San Luis Valley Regional) to Phoenix, AZ (PHX-Sky Harbor Intl.)?
The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.
What is the earliest flight from Alamosa, CO (ALS-San Luis Valley Regional) to Phoenix, AZ (PHX-Sky Harbor Intl.)?
The earliest flight from Alamosa (ALS) to Phoenix (PHX) typically departs at around 8:00 AM local time, operated by Key Lime Air and American Airlines. This seasonal service is available in April, June, and July, giving you a chance to start your day early and enjoy more time in Phoenix. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What are the most popular departure times for flights from Alamosa, CO (ALS-San Luis Valley Regional) to Phoenix, AZ (PHX-Sky Harbor Intl.)?
The most popular departure times for flights from Alamosa (ALS) to Phoenix (PHX) are in the early morning, from 6am to 9am. About 57% of passengers prefer this time window. Many major carriers, including United Airlines and Delta, offer flights during this window. This timing works well because it allows you to start your day early and make the most of your time in Phoenix.
How long does it take to fly from Alamosa, CO (ALS-San Luis Valley Regional) to Phoenix, AZ (PHX-Sky Harbor Intl.)?
Flights from ALS to PHX with one stop typically take around 5 hours 50 minutes, covering approximately 443 miles. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Alamosa, CO (ALS-San Luis Valley Regional) to Phoenix, AZ (PHX-Sky Harbor Intl.)?
Select the "Business class" and "First class" filters when looking for ALS to PHX flights on Expedia. This is the easiest way to compare prices, routes and flight times for your trip.
How do I earn miles on a Alamosa, CO (ALS-San Luis Valley Regional) to Phoenix, AZ (PHX-Sky Harbor Intl.) flight with Expedia?
It's easy to earn miles on a Alamosa, CO (ALS-San Luis Valley Regional) to Phoenix, AZ (PHX-Sky Harbor Intl.) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for Phoenix from San Luis Valley Regional (ALS)?
From San Luis Valley Regional (ALS), you can fly into Sky Harbor Intl. (PHX) to reach Phoenix. Some flights may connect through major hubs like Denver Intl. (DEN) before reaching Phoenix. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Alamosa, CO (ALS-San Luis Valley Regional) to Phoenix, AZ (PHX-Sky Harbor Intl.) at the last minute?
Typically, booking a last minute flight from Alamosa, CO (ALS-San Luis Valley Regional) to Phoenix, AZ (PHX-Sky Harbor Intl.) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Alamosa, CO (ALS-San Luis Valley Regional) to Phoenix, AZ (PHX-Sky Harbor Intl.) flight and hotel package?
Securing a Alamosa, CO (ALS-San Luis Valley Regional) to Phoenix, AZ (PHX-Sky Harbor Intl.) Phoenix Vacation Packages is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Alamosa, CO (ALS-San Luis Valley Regional) to Phoenix, AZ (PHX-Sky Harbor Intl.)?
If you booked your Alamosa, CO (ALS-San Luis Valley Regional) to Phoenix, AZ (PHX-Sky Harbor Intl.) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
San Luis Valley Regional
Destination airport
Sky Harbor Intl.
Airlines serving
KEY LIME AIR DBA DENVER AIR CONNECTION
Roundtrip price
$627
Distance
442 mi

Book with confidence

Alamosa to Phoenix Flights

The cheapest times to fly from Alamosa to Phoenix

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 Alamosa to Phoenix are during the month of July. You can find some of the cheapest flights from Alamosa to Phoenix with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Alamosa to Phoenix

Sunday is one of the best days to book for cheap flights from Alamosa to Phoenix: 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 Alamosa to Phoenix

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 Alamosa to Phoenix in 2026. You can also book with separate airlines for your outbound and return journeys, from $246 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 Alamosa to Phoenix 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 Alamosa to Phoenix 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.

 

Alamosa to Phoenix Flights

*Flight schedules are subject to change.

*Available to One Key members.

 

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