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PSM to JSI: distance & flight time
Portsmouth (Portsmouth International at Pease Airport) → Skiathos (Skiathos Island National Airport)
4,638 mi
7,464 km · 4,030 nm
9h 34m
estimated nonstop flight time
+7h
time difference · heading northeast
See live PSM→JSI fares Phone-only fares on this route — call free
Flight time details
4,638 miles nonstop takes roughly 9h 34m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 7-hour time gain when reading arrival times on your ticket.
The two airports
- PSM — Portsmouth International at Pease Airport · Portsmouth, United States
- JSI — Skiathos Island National Airport · Skiathos, Greece
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 JSI
- VOL · Nea Anchialos Airport38 mi away
- SKU · Skiros Airport55 mi away
- LRA · Larisa Airport64 mi away
- ATH · Eleftherios Venizelos International Airport89 mi away
Frequently asked questions
How far is PSM from JSI?
The flight distance from Portsmouth (PSM) to Skiathos (JSI) is 4,638 miles (7,464 km, 4,030 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from PSM to JSI?
A nonstop flight takes about 9h 34m 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 Skiathos?
Skiathos is 7 hours ahead of Portsmouth.
What is the cheapest way to fly from PSM to JSI?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on PSM–JSI that never appear on search engines, with no booking fees.