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YZY to BFI: distance & flight time
Zhangye (Zhangye Ganzhou Airport) → Seattle (Boeing Field King County International Airport)
5,912 mi
9,515 km · 5,138 nm
12h 4m
estimated nonstop flight time
-15h
time difference · heading northeast
See live YZY→BFI fares Phone-only fares on this route — call free
Flight time details
5,912 miles nonstop takes roughly 12h 4m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 15-hour time set-back when reading arrival times on your ticket.
The two airports
- YZY — Zhangye Ganzhou Airport · Zhangye, China
- 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 YZY
- RHT · Alxa Right Banner Badanjilin Airport55 mi away
- JIC · Jinchuan Airport92 mi away
- JGN · Jiayuguan Airport144 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 YZY from BFI?
The flight distance from Zhangye (YZY) to Seattle (BFI) is 5,912 miles (9,515 km, 5,138 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from YZY to BFI?
A nonstop flight takes about 12h 4m 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 Zhangye and Seattle?
Seattle is 15 hours behind Zhangye.
What is the cheapest way to fly from YZY to BFI?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on YZY–BFI that never appear on search engines, with no booking fees.