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KLU to BOS: distance & flight time
Klagenfurt (Klagenfurt Airport) → Boston (General Edward Lawrence Logan International Airport)
4,002 mi
6,440 km · 3,477 nm
8h 19m
estimated nonstop flight time
-6h
time difference · heading northwest
See live KLU→BOS fares Phone-only fares on this route — call free
Flight time details
4,002 miles nonstop takes roughly 8h 19m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 6-hour time set-back when reading arrival times on your ticket.
The two airports
- KLU — Klagenfurt Airport · Klagenfurt, Austria
- BOS — General Edward Lawrence Logan International Airport · Boston, 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 KLU
- LJU · Ljubljana Jože Pučnik Airport29 mi away
- GRZ · Graz Airport57 mi away
- MBX · Maribor Airport65 mi away
- TRS · Trieste–Friuli Venezia Giulia Airport70 mi away
Near BOS
- OWD · Norwood Memorial Airport15 mi away
- BED · Laurence G Hanscom Field16 mi away
- BVY · Beverly Municipal Airport16 mi away
- LWM · Lawrence Municipal Airport25 mi away
Frequently asked questions
How far is KLU from BOS?
The flight distance from Klagenfurt (KLU) to Boston (BOS) is 4,002 miles (6,440 km, 3,477 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from KLU to BOS?
A nonstop flight takes about 8h 19m 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 Klagenfurt and Boston?
Boston is 6 hours behind Klagenfurt.
What is the cheapest way to fly from KLU to BOS?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on KLU–BOS that never appear on search engines, with no booking fees.