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SYH to BFI: distance & flight time
Syangboche (Syangboche Airport) → Seattle (Boeing Field King County International Airport)
6,927 mi
11,148 km · 6,020 nm
14h 3m
estimated nonstop flight time
-12.7h
time difference · heading north
See live SYH→BFI fares Phone-only fares on this route — call free
Flight time details
6,927 miles nonstop takes roughly 14h 3m gate to gate, flying north. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 12.7-hour time set-back when reading arrival times on your ticket.
The two airports
- SYH — Syangboche Airport · Syangboche, Nepal
- 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 SYH
- LUA · Lukla Airport9 mi away
- PPL · Phaplu Airport22 mi away
- RUM · Rumjatar Airport36 mi away
- LDN · Lamidanda Airport39 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 SYH from BFI?
The flight distance from Syangboche (SYH) to Seattle (BFI) is 6,927 miles (11,148 km, 6,020 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from SYH to BFI?
A nonstop flight takes about 14h 3m 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 Syangboche and Seattle?
Seattle is 12.7 hours behind Syangboche.
What is the cheapest way to fly from SYH to BFI?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on SYH–BFI that never appear on search engines, with no booking fees.