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KLS to HRL: distance & flight time
Kelso (Southwest Washington Regional Airport) → Harlingen (Valley International Airport)
1,951 mi
3,140 km · 1,696 nm
4h 18m
estimated nonstop flight time
+2h
time difference · heading southeast
See live KLS→HRL fares Phone-only fares on this route — call free
Flight time details
1,951 miles nonstop takes roughly 4h 18m gate to gate, flying southeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 2-hour time gain when reading arrival times on your ticket.
The two airports
- KLS — Southwest Washington Regional Airport · Kelso, United States
- HRL — Valley International Airport · Harlingen, 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 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 KLS from HRL?
The flight distance from Kelso (KLS) to Harlingen (HRL) is 1,951 miles (3,140 km, 1,696 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from KLS to HRL?
A nonstop flight takes about 4h 18m 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 Harlingen?
Harlingen is 2 hours ahead of Kelso.
What is the cheapest way to fly from KLS to HRL?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on KLS–HRL that never appear on search engines, with no booking fees.