Need help booking?
Unpublished phone-only deals available
OSF to PSM: distance & flight time
Moscow (Ostafyevo International Airport) → Portsmouth (Portsmouth International at Pease Airport)
4,446 mi
7,155 km · 3,864 nm
9h 11m
estimated nonstop flight time
-7h
time difference · heading northwest
See live OSF→PSM fares Phone-only fares on this route — call free
Flight time details
4,446 miles nonstop takes roughly 9h 11m 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
- OSF — Ostafyevo International Airport · Moscow, Russia
- 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 OSF
- VKO · Vnukovo International Airport11 mi away
- DME · Domodedovo International Airport17 mi away
- BKA · Bykovo Airport23 mi away
- ZIA · Zhukovsky International Airport25 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 OSF from PSM?
The flight distance from Moscow (OSF) to Portsmouth (PSM) is 4,446 miles (7,155 km, 3,864 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from OSF to PSM?
A nonstop flight takes about 9h 11m 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 Moscow and Portsmouth?
Portsmouth is 7 hours behind Moscow.
What is the cheapest way to fly from OSF to PSM?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on OSF–PSM that never appear on search engines, with no booking fees.