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BFI to XNN: distance & flight time
Seattle (Boeing Field King County International Airport) → Xining (Xining Caojiabu Airport)
6,016 mi
9,682 km · 5,228 nm
12h 16m
estimated nonstop flight time
+15h
time difference · heading northwest
See live BFI→XNN fares Phone-only fares on this route — call free
Flight time details
6,016 miles nonstop takes roughly 12h 16m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 15-hour time gain when reading arrival times on your ticket.
The two airports
- BFI — Boeing Field King County International Airport · Seattle, United States
- XNN — Xining Caojiabu Airport · Xining, China
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 XNN
- LHW · Lanzhou Zhongchuan Airport88 mi away
- GXH · Gannan Xiahe Airport123 mi away
- JIC · Jinchuan Airport140 mi away
Frequently asked questions
How far is BFI from XNN?
The flight distance from Seattle (BFI) to Xining (XNN) is 6,016 miles (9,682 km, 5,228 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from BFI to XNN?
A nonstop flight takes about 12h 16m 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 Xining?
Xining is 15 hours ahead of Seattle.
What is the cheapest way to fly from BFI to XNN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on BFI–XNN that never appear on search engines, with no booking fees.