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KSJ to PSM: distance & flight time
Kasos (Kasos Airport) → Portsmouth (Portsmouth International at Pease Airport)
4,947 mi
7,961 km · 4,299 nm
10h 10m
estimated nonstop flight time
-7h
time difference · heading northwest
See live KSJ→PSM fares Phone-only fares on this route — call free
Flight time details
4,947 miles nonstop takes roughly 10h 10m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 7-hour time set-back when reading arrival times on your ticket.
The two airports
- KSJ — Kasos Airport · Kasos, Greece
- 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 KSJ
- AOK · Karpathos Airport13 mi away
- JSH · Sitia Airport48 mi away
- JTY · Astypalaia Airport85 mi away
- KGS · Kos Airport95 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 KSJ from PSM?
The flight distance from Kasos (KSJ) to Portsmouth (PSM) is 4,947 miles (7,961 km, 4,299 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from KSJ to PSM?
A nonstop flight takes about 10h 10m 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 Kasos and Portsmouth?
Portsmouth is 7 hours behind Kasos.
What is the cheapest way to fly from KSJ to PSM?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on KSJ–PSM that never appear on search engines, with no booking fees.