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PSM to KLS: distance & flight time
Portsmouth (Portsmouth International at Pease Airport) → Kelso (Southwest Washington Regional Airport)
2,524 mi
4,063 km · 2,194 nm
5h 25m
estimated nonstop flight time
-3h
time difference · heading northwest
See live PSM→KLS fares Phone-only fares on this route — call free
Flight time details
2,524 miles nonstop takes roughly 5h 25m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 3-hour time set-back when reading arrival times on your ticket.
The two airports
- PSM — Portsmouth International at Pease Airport · Portsmouth, United States
- 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 PSM
- BOS · General Edward Lawrence Logan International Airport50 mi away
- LWM · Lawrence Municipal Airport29 mi away
- MHT · Manchester-Boston Regional Airport33 mi away
- BVY · Beverly Municipal Airport34 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 PSM from KLS?
The flight distance from Portsmouth (PSM) to Kelso (KLS) is 2,524 miles (4,063 km, 2,194 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from PSM to KLS?
A nonstop flight takes about 5h 25m 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 Portsmouth and Kelso?
Kelso is 3 hours behind Portsmouth.
What is the cheapest way to fly from PSM to KLS?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on PSM–KLS that never appear on search engines, with no booking fees.