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KAG to BFI: distance & flight time
Kangnung (Gangneung Airport (K-18)) → Seattle (Boeing Field King County International Airport)
5,095 mi
8,200 km · 4,427 nm
10h 27m
estimated nonstop flight time
-16h
time difference · heading northeast
See live KAG→BFI fares Phone-only fares on this route — call free
Flight time details
5,095 miles nonstop takes roughly 10h 27m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 16-hour time set-back when reading arrival times on your ticket.
The two airports
- KAG — Gangneung Airport (K-18) · Kangnung, South Korea
- BFI — Boeing Field King County 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 KAG
- YNY · Yangyang International Airport26 mi away
- WJU · Wonju/Hoengseong Air Base (K-38/K-46)58 mi away
- YEC · Yecheon Airbase84 mi away
- ICN · Incheon International Airport138 mi away
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
Frequently asked questions
How far is KAG from BFI?
The flight distance from Kangnung (KAG) to Seattle (BFI) is 5,095 miles (8,200 km, 4,427 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from KAG to BFI?
A nonstop flight takes about 10h 27m 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 Kangnung and Seattle?
Seattle is 16 hours behind Kangnung.
What is the cheapest way to fly from KAG to BFI?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on KAG–BFI that never appear on search engines, with no booking fees.