Need help booking?
Unpublished phone-only deals available
BOI to KFS: distance & flight time
Boise (Boise Air Terminal/Gowen Field) → Kastamonu (Kastamonu Airport)
6,283 mi
10,112 km · 5,460 nm
12h 47m
estimated nonstop flight time
+9h
time difference · heading north
See live BOI→KFS fares Phone-only fares on this route — call free
Flight time details
6,283 miles nonstop takes roughly 12h 47m gate to gate, flying north. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 9-hour time gain when reading arrival times on your ticket.
The two airports
- BOI — Boise Air Terminal/Gowen Field · Boise, United States
- KFS — Kastamonu Airport · Kastamonu, Turkey
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 BOI
- MUO · Mountain Home Air Force Base40 mi away
- ONO · Ontario Municipal Airport50 mi away
- MYL · McCall Municipal Airport92 mi away
- SUN · Friedman Memorial Airport97 mi away
Near KFS
- NOP · Sinop Airport82 mi away
- ONQ · Zonguldak Airport89 mi away
- ESB · Esenboğa International Airport92 mi away
- MZH · Amasya Merzifon Airport96 mi away
Frequently asked questions
How far is BOI from KFS?
The flight distance from Boise (BOI) to Kastamonu (KFS) is 6,283 miles (10,112 km, 5,460 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from BOI to KFS?
A nonstop flight takes about 12h 47m 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 Boise and Kastamonu?
Kastamonu is 9 hours ahead of Boise.
What is the cheapest way to fly from BOI to KFS?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on BOI–KFS that never appear on search engines, with no booking fees.