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PSM to BOI: distance & flight time
Portsmouth (Portsmouth International at Pease Airport) → Boise (Boise Air Terminal/Gowen Field)
2,253 mi
3,626 km · 1,958 nm
4h 53m
estimated nonstop flight time
-2h
time difference · heading west
See live PSM→BOI fares Phone-only fares on this route — call free
Flight time details
2,253 miles nonstop takes roughly 4h 53m gate to gate, flying west. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 2-hour time set-back when reading arrival times on your ticket.
The two airports
- PSM — Portsmouth International at Pease Airport · Portsmouth, United States
- BOI — Boise Air Terminal/Gowen Field · Boise, 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 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
Near BOI
- MUO · Mountain Home Air Force Base40 mi away
- ONO · Ontario Municipal Airport50 mi away
- MYL · McCall Municipal Airport92 mi away
- SUN · Friedman Memorial Airport97 mi away
Frequently asked questions
How far is PSM from BOI?
The flight distance from Portsmouth (PSM) to Boise (BOI) is 2,253 miles (3,626 km, 1,958 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from PSM to BOI?
A nonstop flight takes about 4h 53m 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 Portsmouth and Boise?
Boise is 2 hours behind Portsmouth.
What is the cheapest way to fly from PSM to BOI?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on PSM–BOI that never appear on search engines, with no booking fees.