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KLS to OPO: distance & flight time
Kelso (Southwest Washington Regional Airport) → Porto (Francisco de Sá Carneiro Airport)
5,171 mi
8,322 km · 4,494 nm
10h 36m
estimated nonstop flight time
+8h
time difference · heading northeast
See live KLS→OPO fares Phone-only fares on this route — call free
Flight time details
5,171 miles nonstop takes roughly 10h 36m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 8-hour time gain when reading arrival times on your ticket.
The two airports
- KLS — Southwest Washington Regional Airport · Kelso, United States
- OPO — Francisco de Sá Carneiro Airport · Porto, Portugal
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 OPO
- BGZ · Braga Municipal Aerodrome26 mi away
- VRL · Vila Real Airport50 mi away
- VSE · Aerodromo Goncalves Lobato (Viseu Airport)55 mi away
- VGO · Vigo Airport68 mi away
Frequently asked questions
How far is KLS from OPO?
The flight distance from Kelso (KLS) to Porto (OPO) is 5,171 miles (8,322 km, 4,494 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from KLS to OPO?
A nonstop flight takes about 10h 36m 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 Porto?
Porto is 8 hours ahead of Kelso.
What is the cheapest way to fly from KLS to OPO?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on KLS–OPO that never appear on search engines, with no booking fees.