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XSD to BFI: distance & flight time
Tonopah (Tonopah Test Range Airport) → Seattle (Boeing Field King County International Airport)
728 mi
1,172 km · 633 nm
2h 3m
estimated nonstop flight time
Same time
time difference · heading north
See live XSD→BFI fares Phone-only fares on this route — call free
Flight time details
728 miles nonstop takes roughly 2h 3m gate to gate, flying north. Add 45–90 minutes per connection if there's no nonstop service. Both airports share the same local time, so schedules read exactly as flown.
The two airports
- XSD — Tonopah Test Range Airport · Tonopah, United States
- 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 XSD
- TPH · Tonopah Airport25 mi away
- DRA · Desert Rock Airport91 mi away
- BIH · Eastern Sierra Regional Airport92 mi away
- INS · Creech Air Force Base104 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 XSD from BFI?
The flight distance from Tonopah (XSD) to Seattle (BFI) is 728 miles (1,172 km, 633 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from XSD to BFI?
A nonstop flight takes about 2h 3m gate to gate. Actual time varies with winds, routing and season — eastbound transatlantic flights, for example, are usually faster than the return.
Are there nonstop flights from XSD to BFI?
Nonstop service on XSD–BFI depends on the season and the day of week. Run the fare search on this page with the nonstop filter applied to see current direct options; when there is no nonstop, a single connection through a carrier hub adds roughly 2–4 hours to the 2h 3m nonstop estimate.
What is the cheapest way to fly from XSD to BFI?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on XSD–BFI that never appear on search engines, with no booking fees.
Why are some XSD to BFI fares phone-only?
Consolidator contracts let us sell certain XSD–BFI tickets below the price airlines permit us to publish online, so those fares can only be quoted over the phone. Call the travel desk and an agent will check phone-only inventory for your dates.