Need help booking?
Unpublished phone-only deals available
NSY to BFI: distance & flight time
Sigonella (Sigonella Navy Air Base) → Seattle (Boeing Field King County International Airport)
6,003 mi
9,661 km · 5,217 nm
12h 14m
estimated nonstop flight time
-9h
time difference · heading northwest
See live NSY→BFI fares Phone-only fares on this route — call free
Flight time details
6,003 miles nonstop takes roughly 12h 14m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 9-hour time set-back when reading arrival times on your ticket.
The two airports
- NSY — Sigonella Navy Air Base · Sigonella, Italy
- 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 NSY
- CTA · Catania-Fontanarossa Airport9 mi away
- CIY · Comiso Airport33 mi away
- REG · Reggio Calabria Airport61 mi away
- GZM · Xewkija Heliport102 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 NSY from BFI?
The flight distance from Sigonella (NSY) to Seattle (BFI) is 6,003 miles (9,661 km, 5,217 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from NSY to BFI?
A nonstop flight takes about 12h 14m 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 Sigonella and Seattle?
Seattle is 9 hours behind Sigonella.
What is the cheapest way to fly from NSY to BFI?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on NSY–BFI that never appear on search engines, with no booking fees.