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BFI to NHT: distance & flight time
Seattle (Boeing Field King County International Airport) → Northolt (RAF Northolt)
4,778 mi
7,689 km · 4,152 nm
9h 50m
estimated nonstop flight time
+8h
time difference · heading northeast
See live BFI→NHT fares Phone-only fares on this route — call free
Flight time details
4,778 miles nonstop takes roughly 9h 50m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 8-hour time gain when reading arrival times on your ticket.
The two airports
- BFI — Boeing Field King County International Airport · Seattle, United States
- NHT — RAF Northolt · Northolt, United Kingdom
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 NHT
- LHR · London Heathrow Airport6 mi away
- LGW · London Gatwick Airport30 mi away
- HYC · Wycombe Air Park17 mi away
- LCY · London City Airport21 mi away
Frequently asked questions
How far is BFI from NHT?
The flight distance from Seattle (BFI) to Northolt (NHT) is 4,778 miles (7,689 km, 4,152 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from BFI to NHT?
A nonstop flight takes about 9h 50m 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 Northolt?
Northolt is 8 hours ahead of Seattle.
What is the cheapest way to fly from BFI to NHT?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on BFI–NHT that never appear on search engines, with no booking fees.