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KLS to THR: distance & flight time
Kelso (Southwest Washington Regional Airport) → Teheran (Mehrabad International Airport)
6,773 mi
10,900 km · 5,886 nm
13h 45m
estimated nonstop flight time
+10.5h
time difference · heading north
See live KLS→THR 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 gain when reading arrival times on your ticket.
The two airports
- KLS — Southwest Washington Regional Airport · Kelso, United States
- THR — Mehrabad International Airport · Teheran, Iran
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 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
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
Frequently asked questions
How far is KLS from THR?
The flight distance from Kelso (KLS) to Teheran (THR) 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 KLS to THR?
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 Kelso and Teheran?
Teheran is 10.5 hours ahead of Kelso.
What is the cheapest way to fly from KLS to THR?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on KLS–THR that never appear on search engines, with no booking fees.