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KLS to GAI: distance & flight time
Kelso (Southwest Washington Regional Airport) → Gaithersburg (Montgomery County Airpark)
2,340 mi
3,766 km · 2,033 nm
5h 3m
estimated nonstop flight time
+3h
time difference · heading east
See live KLS→GAI fares Phone-only fares on this route — call free
Flight time details
2,340 miles nonstop takes roughly 5h 3m gate to gate, flying east. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 3-hour time gain when reading arrival times on your ticket.
The two airports
- KLS — Southwest Washington Regional Airport · Kelso, United States
- GAI — Montgomery County Airpark · Gaithersburg, 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
Near GAI
Frequently asked questions
How far is KLS from GAI?
The flight distance from Kelso (KLS) to Gaithersburg (GAI) is 2,340 miles (3,766 km, 2,033 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from KLS to GAI?
A nonstop flight takes about 5h 3m 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 Gaithersburg?
Gaithersburg is 3 hours ahead of Kelso.
What is the cheapest way to fly from KLS to GAI?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on KLS–GAI that never appear on search engines, with no booking fees.