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ALS to ISN: distance & flight time
Alamosa (San Luis Valley Regional Bergman Field) → Williston (Sloulin Field International Airport)
751 mi
1,208 km · 652 nm
2h 6m
estimated nonstop flight time
+1h
time difference · heading north
See live ALS→ISN fares Phone-only fares on this route — call free
Flight time details
751 miles nonstop takes roughly 2h 6m gate to gate, flying north. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 1-hour time gain when reading arrival times on your ticket.
The two airports
- ALS — San Luis Valley Regional Bergman Field · Alamosa, United States
- ISN — Sloulin Field International Airport · Williston, 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 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
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
Frequently asked questions
How far is ALS from ISN?
The flight distance from Alamosa (ALS) to Williston (ISN) is 751 miles (1,208 km, 652 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from ALS to ISN?
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 Alamosa and Williston?
Williston is 1 hour ahead of Alamosa.
What is the cheapest way to fly from ALS to ISN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on ALS–ISN that never appear on search engines, with no booking fees.