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Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on PSM–ACH that never appear on search engines, with no booking fees.