Cheap Flights from Islip (ISP) to Alamosa (ALS)

Popular airlines from MacArthur Airport (ISP) to Alamosa, CO (ALS-San Luis Valley Regional)

Cheap Flights from Islip to Alamosa (ISP-ALS)

Prices were available within the past 7 days and start at for one-way flights and $937 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Cape Air
Sat, Dec 6 - Wed, Dec 24
ISP
Islip
ALS
Alamosa
$937 Roundtrip, found 5 days ago
$937
Roundtrip
found 5 days ago
Select Cape Air flight, departing Sat, Dec 6 from Islip to Alamosa, returning Wed, Dec 24, priced at $937 found 5 days ago
Cape Air
Mon, Jan 19 - Thu, Feb 5
ISP
Islip
ALS
Alamosa
$947 Roundtrip, found 6 days ago
$947
Roundtrip
found 6 days ago
Select Cape Air flight, departing Mon, Jan 19 from Islip to Alamosa, returning Thu, Feb 5, priced at $947 found 6 days ago
Cape Air
Thu, Jan 1 - Tue, Jan 13
ISP
Islip
ALS
Alamosa
$954 Roundtrip, found 5 days ago
$954
Roundtrip
found 5 days ago
Select Cape Air flight, departing Thu, Jan 1 from Islip to Alamosa, returning Tue, Jan 13, priced at $954 found 5 days ago
Cape Air
Fri, Dec 5 - Sun, Dec 14
ISP
Islip
ALS
Alamosa
$957 Roundtrip, found 5 days ago
$957
Roundtrip
found 5 days ago
Select Cape Air flight, departing Fri, Dec 5 from Islip to Alamosa, returning Sun, Dec 14, priced at $957 found 5 days ago
Cape Air
Thu, Jan 1 - Thu, Jan 15
ISP
Islip
ALS
Alamosa
$964 Roundtrip, found 5 days ago
$964
Roundtrip
found 5 days ago
Select Cape Air flight, departing Thu, Jan 1 from Islip to Alamosa, returning Thu, Jan 15, priced at $964 found 5 days ago
Cape Air
Wed, Dec 3 - Sun, Dec 14
ISP
Islip
ALS
Alamosa
$967 Roundtrip, found 5 days ago
$967
Roundtrip
found 5 days ago
Select Cape Air flight, departing Wed, Dec 3 from Islip to Alamosa, returning Sun, Dec 14, priced at $967 found 5 days ago
Cape Air
Thu, Jan 1 - Mon, Jan 19
ISP
Islip
ALS
Alamosa
$969 Roundtrip, found 6 days ago
$969
Roundtrip
found 6 days ago
Select Cape Air flight, departing Thu, Jan 1 from Islip to Alamosa, returning Mon, Jan 19, priced at $969 found 6 days ago
Cape Air
Thu, Jan 8 - Sun, Jan 25
ISP
Islip
ALS
Alamosa
$977 Roundtrip, found 6 days ago
$977
Roundtrip
found 6 days ago
Select Cape Air flight, departing Thu, Jan 8 from Islip to Alamosa, returning Sun, Jan 25, priced at $977 found 6 days ago
Cape Air
Mon, Dec 15 - Sun, Dec 28
ISP
Islip
ALS
Alamosa
$982 Roundtrip, found 5 days ago
$982
Roundtrip
found 5 days ago
Select Cape Air flight, departing Mon, Dec 15 from Islip to Alamosa, returning Sun, Dec 28, priced at $982 found 5 days ago
Cape Air
Thu, Jan 29 - Thu, Feb 12
ISP
Islip
ALS
Alamosa
$987 Roundtrip, found 6 days ago
$987
Roundtrip
found 6 days ago
Select Cape Air flight, departing Thu, Jan 29 from Islip to Alamosa, returning Thu, Feb 12, priced at $987 found 6 days ago
Cape Air
Mon, Jan 26 - Sun, Feb 15
ISP
Islip
ALS
Alamosa
$992 Roundtrip, found 6 days ago
$992
Roundtrip
found 6 days ago
Select Cape Air flight, departing Mon, Jan 26 from Islip to Alamosa, returning Sun, Feb 15, priced at $992 found 6 days ago
Cape Air
Sat, Dec 6 - Tue, Dec 23
ISP
Islip
ALS
Alamosa
$997 Roundtrip, found 5 days ago
$997
Roundtrip
found 5 days ago
Select Cape Air flight, departing Sat, Dec 6 from Islip to Alamosa, returning Tue, Dec 23, priced at $997 found 5 days ago
Cape Air
Mon, Dec 15 - Sun, Jan 4
ISP
Islip
ALS
Alamosa
$1,002 Roundtrip, found 6 days ago
$1,002
Roundtrip
found 6 days ago
Select Cape Air flight, departing Mon, Dec 15 from Islip to Alamosa, returning Sun, Jan 4, priced at $1,002 found 6 days ago
Cape Air
Wed, Dec 31 - Mon, Jan 19
ISP
Islip
ALS
Alamosa
$1,014 Roundtrip, found 6 days ago
$1,014
Roundtrip
found 6 days ago
Select Cape Air flight, departing Wed, Dec 31 from Islip to Alamosa, returning Mon, Jan 19, priced at $1,014 found 6 days ago
Cape Air
Tue, Nov 18 - Thu, Dec 4
ISP
Islip
ALS
Alamosa
$1,017 Roundtrip, found 5 days ago
$1,017
Roundtrip
found 5 days ago
Select Cape Air flight, departing Tue, Nov 18 from Islip to Alamosa, returning Thu, Dec 4, priced at $1,017 found 5 days ago
Cape Air
Wed, Dec 3 - Fri, Dec 19
ISP
Islip
ALS
Alamosa
$1,027 Roundtrip, found 5 days ago
$1,027
Roundtrip
found 5 days ago
Select Cape Air flight, departing Wed, Dec 3 from Islip to Alamosa, returning Fri, Dec 19, priced at $1,027 found 5 days ago
Cape Air
Sun, Nov 23 - Mon, Dec 8
ISP
Islip
ALS
Alamosa
$1,028 Roundtrip, found 5 days ago
$1,028
Roundtrip
found 5 days ago
Select Cape Air flight, departing Sun, Nov 23 from Islip to Alamosa, returning Mon, Dec 8, priced at $1,028 found 5 days ago
Cape Air
Tue, Dec 16 - Sun, Jan 4
ISP
Islip
ALS
Alamosa
$1,032 Roundtrip, found 6 days ago
$1,032
Roundtrip
found 6 days ago
Select Cape Air flight, departing Tue, Dec 16 from Islip to Alamosa, returning Sun, Jan 4, priced at $1,032 found 6 days ago
Cape Air
Sat, Nov 22 - Mon, Dec 8
ISP
Islip
ALS
Alamosa
$1,035 Roundtrip, found 5 days ago
$1,035
Roundtrip
found 5 days ago
Select Cape Air flight, departing Sat, Nov 22 from Islip to Alamosa, returning Mon, Dec 8, priced at $1,035 found 5 days ago
Cape Air
Sat, Nov 22 - Thu, Dec 11
ISP
Islip
ALS
Alamosa
$1,037 Roundtrip, found 5 days ago
$1,037
Roundtrip
found 5 days ago
Select Cape Air flight, departing Sat, Nov 22 from Islip to Alamosa, returning Thu, Dec 11, priced at $1,037 found 5 days ago

Alternative airports near Alamosa

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to San Luis Valley Regional ALS. Cheapest and Closest option available. Average driving time to city center is 4 minutes. Flights from $1,337
ALS
San Luis Valley Regional
CheapestClosest
Average driving time to city center4 min
Flights from $1,337

Frequently asked questions

How much does a flight from MacArthur Airport (ISP) to San Luis Valley Regional Airport (ALS) cost?
Lock in a cheap one-way flight or cheap return flight from $937 from MacArthur Airport (ISP) 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 MacArthur Airport (ISP) to San Luis Valley Regional Airport (ALS)?
The cheapest month to fly from ISP to ALS is December, when there's less demand. Off-peak season is usually when airlines offer lower prices between these airports.
What is the cheapest airline that flies from MacArthur Airport (ISP) to San Luis Valley Regional Airport (ALS)?
Use the filters on Expedia to compare different airlines and find the cheapest carrier that'll fly you from ISP to ALS. Then, sort your results by "Price (lowest to highest)" to snag a good deal.
How many flights per day from MacArthur Airport (ISP) to San Luis Valley Regional Airport (ALS)?
There aren't any daily direct flights departing from MacArthur Airport (ISP) to San Luis Valley Regional Airport (ALS). But you can choose flights with layovers. Filter your search results on Expedia to include one or two stops, and you'll be soaring above the clouds in no time at all.
What day of the week has the most flights from ISP to ALS?
Typically you'll find the largest variety of flight choices on a Friday. Tuesdays are often the quietest.* But this can vary based on the time of year, airline 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 MacArthur Airport (ISP) to San Luis Valley Regional Airport (ALS)?
Opt for a flight from MacArthur Airport (ISP) to San Luis Valley Regional Airport (ALS) that takes off before 3 PM to reduce the risk of delays and cancellations. Departures later than this 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 MacArthur Airport (ISP) to San Luis Valley Regional Airport (ALS) last-minute?
Booking your flight from ISP to ALS just before your journey is generally more expensive. However, if there's some wiggle room with your itinerary, you could bag a cheap last-minute fare.
Is it cheaper to book an ISP to ALS flight and hotel package?
Compared with arranging flights and hotels separately, booking an ISP to ALS flight and hotel package with Expedia could lead to significant savings. Better yet, having everything in one place will take the stress out of planning your trip. Just secure your flights and select from our wide range of hotels, then tailor your trip with extras like activities, tours and car rentals.
Can I cancel or change the date of my flight from MacArthur Airport (ISP) to San Luis Valley Regional Airport (ALS)?
Typically, you can modify or cancel your ISP to ALS flight. However, additional charges may apply, especially if you booked more than 24 hours ago. Double-check your itinerary for the airline's guidelines and fees on flight changes, or if you'd like further details, go to our Customer Service portal.

Travel information

Origin airport
MacArthur
Destination airport
San Luis Valley Regional
Roundtrip price
$936
Distance
1761 mi

Book with confidence

Islip to Alamosa Flights

The cheapest times to fly from Islip 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 Islip to Alamosa are during the month of December. You can find some of the cheapest flights from Islip to Alamosa with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Islip to Alamosa

Sunday is one of the best days to book for cheap flights from Islip 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 Islip 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 Islip to Alamosa in 2025. You can also book with separate airlines for your outbound and return journeys, from 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 Islip 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 Islip 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.

 

Islip to Alamosa Flights

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*Available to One Key members.