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THR to KLS: distance & flight time
Teheran (Mehrabad International Airport) → Kelso (Southwest Washington Regional Airport)
6,773 mi
10,900 km · 5,886 nm
13h 45m
estimated nonstop flight time
-10.5h
time difference · heading north
See live THR→KLS fares Phone-only fares on this route — call free
Flight time details
6,773 miles nonstop takes roughly 13h 45m gate to gate, flying north. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 10.5-hour time set-back when reading arrival times on your ticket.
The two airports
- THR — Mehrabad International Airport · Teheran, Iran
- 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 THR
- IKA · Imam Khomeini International Airport21 mi away
- PYK · Payam International Airport28 mi away
- NSH · Noshahr Airport68 mi away
- GZW · Qazvin Airport80 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 THR from KLS?
The flight distance from Teheran (THR) to Kelso (KLS) is 6,773 miles (10,900 km, 5,886 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from THR to KLS?
A nonstop flight takes about 13h 45m 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 Teheran and Kelso?
Kelso is 10.5 hours behind Teheran.
What is the cheapest way to fly from THR to KLS?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on THR–KLS that never appear on search engines, with no booking fees.