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OSF to SEA: distance & flight time
Moscow (Ostafyevo International Airport) → Seattle (Seattle Tacoma International Airport)
5,227 mi
8,412 km · 4,542 nm
10h 43m
estimated nonstop flight time
-10h
time difference · heading north
See live OSF→SEA fares Phone-only fares on this route — call free
Flight time details
5,227 miles nonstop takes roughly 10h 43m gate to gate, flying north. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 10-hour time set-back when reading arrival times on your ticket.
The two airports
- OSF — Ostafyevo International Airport · Moscow, Russia
- SEA — Seattle Tacoma International Airport · Seattle, 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 SEA
- RNT · Renton Municipal Airport5 mi away
- BFI · Boeing Field King County International Airport6 mi away
- TIW · Tacoma Narrows Airport18 mi away
- PWT · Bremerton National Airport21 mi away
Frequently asked questions
How far is OSF from SEA?
The flight distance from Moscow (OSF) to Seattle (SEA) is 5,227 miles (8,412 km, 4,542 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from OSF to SEA?
A nonstop flight takes about 10h 43m 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 Seattle?
Seattle is 10 hours behind Moscow.
What is the cheapest way to fly from OSF to SEA?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on OSF–SEA that never appear on search engines, with no booking fees.