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PSM to BUF: distance & flight time
Portsmouth (Portsmouth International at Pease Airport) → Buffalo (Buffalo Niagara International Airport)
400 mi
643 km · 347 nm
1h 31m
estimated nonstop flight time
Same time
time difference · heading west
See live PSM→BUF fares Phone-only fares on this route — call free
Flight time details
400 miles nonstop takes roughly 1h 31m gate to gate, flying west. Add 45–90 minutes per connection if there's no nonstop service. Both airports share the same local time, so schedules read exactly as flown.
The two airports
- PSM — Portsmouth International at Pease Airport · Portsmouth, United States
- BUF — Buffalo Niagara International Airport · Buffalo, 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 BUF
- IAG · Niagara Falls International Airport16 mi away
- YYZ · Lester B. Pearson International Airport68 mi away
- YCM · Niagara District Airport28 mi away
- DKK · Chautauqua County-Dunkirk Airport41 mi away
Frequently asked questions
How far is PSM from BUF?
The flight distance from Portsmouth (PSM) to Buffalo (BUF) is 400 miles (643 km, 347 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from PSM to BUF?
A nonstop flight takes about 1h 31m 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 cheapest way to fly from PSM to BUF?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on PSM–BUF that never appear on search engines, with no booking fees.