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ISP to PSM: distance & flight time
Islip (Long Island Mac Arthur Airport) → Portsmouth (Portsmouth International at Pease Airport)
196 mi
316 km · 171 nm
59m
estimated nonstop flight time
Same time
time difference · heading northeast
See live ISP→PSM fares Phone-only fares on this route — call free
Flight time details
196 miles nonstop takes roughly 59m gate to gate, flying northeast. 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
- ISP — Long Island Mac Arthur Airport · Islip, United States
- 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 ISP
- JFK · John F Kennedy International Airport37 mi away
- LGA · La Guardia Airport40 mi away
- EWR · Newark Liberty International Airport56 mi away
- FRG · Republic Airport17 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 ISP from PSM?
The flight distance from Islip (ISP) to Portsmouth (PSM) is 196 miles (316 km, 171 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from ISP to PSM?
A nonstop flight takes about 59m gate to gate. Actual time varies with winds, routing and season — eastbound transatlantic flights, for example, are usually faster than the return.
Are there nonstop flights from ISP to PSM?
Nonstop service on ISP–PSM depends on the season and the day of week. Run the fare search on this page with the nonstop filter applied to see current direct options; when there is no nonstop, a single connection through a carrier hub adds roughly 2–4 hours to the 59m nonstop estimate.
What is the cheapest way to fly from ISP to PSM?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on ISP–PSM that never appear on search engines, with no booking fees.
Why are some ISP to PSM fares phone-only?
Consolidator contracts let us sell certain ISP–PSM tickets below the price airlines permit us to publish online, so those fares can only be quoted over the phone. Call the travel desk and an agent will check phone-only inventory for your dates.