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ALS to PSM: distance & flight time
Alamosa (San Luis Valley Regional Bergman Field) → Portsmouth (Portsmouth International at Pease Airport)
1,874 mi
3,016 km · 1,629 nm
4h 8m
estimated nonstop flight time
+2h
time difference · heading northeast
See live ALS→PSM fares Phone-only fares on this route — call free
Flight time details
1,874 miles nonstop takes roughly 4h 8m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 2-hour time gain when reading arrival times on your ticket.
The two airports
- ALS — San Luis Valley Regional Bergman Field · Alamosa, United States
- PSM — Portsmouth International at Pease Airport · Portsmouth, 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 PSM
- BOS · General Edward Lawrence Logan International Airport50 mi away
- LWM · Lawrence Municipal Airport29 mi away
- MHT · Manchester-Boston Regional Airport33 mi away
- BVY · Beverly Municipal Airport34 mi away
Frequently asked questions
How far is ALS from PSM?
The flight distance from Alamosa (ALS) to Portsmouth (PSM) is 1,874 miles (3,016 km, 1,629 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from ALS to PSM?
A nonstop flight takes about 4h 8m 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 Portsmouth?
Portsmouth is 2 hours ahead of Alamosa.
What is the cheapest way to fly from ALS to PSM?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on ALS–PSM that never appear on search engines, with no booking fees.