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BFI to GMP: distance & flight time
Seattle (Boeing Field King County International Airport) → Seoul (Gimpo International Airport)
5,183 mi
8,341 km · 4,504 nm
10h 38m
estimated nonstop flight time
+16h
time difference · heading northwest
See live BFI→GMP fares Phone-only fares on this route — call free
Flight time details
5,183 miles nonstop takes roughly 10h 38m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 16-hour time gain when reading arrival times on your ticket.
The two airports
- BFI — Boeing Field King County International Airport · Seattle, United States
- GMP — Gimpo International Airport · Seoul, South Korea
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 BFI
- SEA · Seattle Tacoma International Airport6 mi away
- RNT · Renton Municipal Airport5 mi away
- PWT · Bremerton National Airport22 mi away
- TIW · Tacoma Narrows Airport22 mi away
Near GMP
- ICN · Incheon International Airport20 mi away
- SSN · Seoul Air Base (K-16)19 mi away
- SWU · Suwon Airport25 mi away
- OSN · Osan Air Base35 mi away
Frequently asked questions
How far is BFI from GMP?
The flight distance from Seattle (BFI) to Seoul (GMP) is 5,183 miles (8,341 km, 4,504 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from BFI to GMP?
A nonstop flight takes about 10h 38m 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 Seattle and Seoul?
Seoul is 16 hours ahead of Seattle.
What is the cheapest way to fly from BFI to GMP?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on BFI–GMP that never appear on search engines, with no booking fees.