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THR to BFI: distance & flight time
Teheran (Mehrabad International Airport) → Seattle (Boeing Field King County International Airport)
6,673 mi
10,740 km · 5,799 nm
13h 33m
estimated nonstop flight time
-10.5h
time difference · heading north
See live THR→BFI fares Phone-only fares on this route — call free
Flight time details
6,673 miles nonstop takes roughly 13h 33m gate to gate, flying north. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 10.5-hour time set-back when reading arrival times on your ticket.
The two airports
- THR — Mehrabad International Airport · Teheran, Iran
- 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 THR
- IKA · Imam Khomeini International Airport21 mi away
- PYK · Payam International Airport28 mi away
- NSH · Noshahr Airport68 mi away
- GZW · Qazvin Airport80 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 THR from BFI?
The flight distance from Teheran (THR) to Seattle (BFI) is 6,673 miles (10,740 km, 5,799 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from THR to BFI?
A nonstop flight takes about 13h 33m 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 Teheran and Seattle?
Seattle is 10.5 hours behind Teheran.
What is the cheapest way to fly from THR to BFI?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on THR–BFI that never appear on search engines, with no booking fees.