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ACH to PSM: distance & flight time
Altenrhein (St Gallen Altenrhein Airport) → Portsmouth (Portsmouth International at Pease Airport)
3,740 mi
6,019 km · 3,250 nm
7h 48m
estimated nonstop flight time
-6h
time difference · heading northwest
See live ACH→PSM fares Phone-only fares on this route — call free
Flight time details
3,740 miles nonstop takes roughly 7h 48m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 6-hour time set-back when reading arrival times on your ticket.
The two airports
- ACH — St Gallen Altenrhein Airport · Altenrhein, Switzerland
- 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 ACH
- HOH · Hohenems-Dornbirn Airport9 mi away
- FDH · Friedrichshafen Airport13 mi away
- ZRH · Zürich Airport47 mi away
- FMM · Memmingen Allgau Airport47 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 ACH from PSM?
The flight distance from Altenrhein (ACH) to Portsmouth (PSM) is 3,740 miles (6,019 km, 3,250 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from ACH to PSM?
A nonstop flight takes about 7h 48m 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 Altenrhein and Portsmouth?
Portsmouth is 6 hours behind Altenrhein.
What is the cheapest way to fly from ACH to PSM?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on ACH–PSM that never appear on search engines, with no booking fees.