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ZIN to KLS: distance & flight time
Interlaken (Interlaken Air Base) → Kelso (Southwest Washington Regional Airport)
5,366 mi
8,635 km · 4,663 nm
10h 59m
estimated nonstop flight time
-9h
time difference · heading northwest
See live ZIN→KLS fares Phone-only fares on this route — call free
Flight time details
5,366 miles nonstop takes roughly 10h 59m 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
- ZIN — Interlaken Air Base · Interlaken, Switzerland
- KLS — Southwest Washington Regional Airport · Kelso, 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 ZIN
- BRN · Bern Belp Airport24 mi away
- BXO · Buochs Airport32 mi away
- EML · Emmen Air Base35 mi away
- SIR · Sion Airport41 mi away
Near KLS
- PDX · Portland International Airport39 mi away
- CLS · Chehalis Centralia Airport39 mi away
- HIO · Portland Hillsboro Airport40 mi away
- TTD · Portland Troutdale Airport46 mi away
Frequently asked questions
How far is ZIN from KLS?
The flight distance from Interlaken (ZIN) to Kelso (KLS) is 5,366 miles (8,635 km, 4,663 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from ZIN to KLS?
A nonstop flight takes about 10h 59m 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 Interlaken and Kelso?
Kelso is 9 hours behind Interlaken.
What is the cheapest way to fly from ZIN to KLS?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on ZIN–KLS that never appear on search engines, with no booking fees.