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ISN to ALS: distance & flight time
Williston (Sloulin Field International Airport) → Alamosa (San Luis Valley Regional Bergman Field)
751 mi
1,208 km · 652 nm
2h 6m
estimated nonstop flight time
-1h
time difference · heading south
See live ISN→ALS fares Phone-only fares on this route — call free
Flight time details
751 miles nonstop takes roughly 2h 6m gate to gate, flying south. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 1-hour time set-back when reading arrival times on your ticket.
The two airports
- ISN — Sloulin Field International Airport · Williston, United States
- ALS — San Luis Valley Regional Bergman Field · Alamosa, United States
Distances are great-circle ("as the crow flies") — the same basis airlines use for frequent-flyer miles.
Alternate airports can cut this fare
Flying from or into a nearby airport is the #1 trick our agents use to beat online prices. Call and we'll compare every combination on one call.
Near ISN
- SDY · Sidney - Richland Regional Airport41 mi away
- YEN · Estevan Airport78 mi away
- OLF · L M Clayton Airport89 mi away
- GDV · Dawson Community Airport90 mi away
Near ALS
- TSM · Taos Regional Airport68 mi away
- RTN · Raton Municipal-Crews Field89 mi away
- PUB · Pueblo Memorial Airport95 mi away
- GUC · Gunnison Crested Butte Regional Airport96 mi away
Frequently asked questions
How far is ISN from ALS?
The flight distance from Williston (ISN) to Alamosa (ALS) is 751 miles (1,208 km, 652 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from ISN to ALS?
A nonstop flight takes about 2h 6m gate to gate. Actual time varies with winds, routing and season — eastbound transatlantic flights, for example, are usually faster than the return.
What is the time difference between Williston and Alamosa?
Alamosa is 1 hour behind Williston.
What is the cheapest way to fly from ISN to ALS?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on ISN–ALS that never appear on search engines, with no booking fees.