Need help booking?
Unpublished phone-only deals available
GRF to GAI: distance & flight time
Fort Lewis (Gray Army Air Field) → Gaithersburg (Montgomery County Airpark)
2,320 mi
3,734 km · 2,016 nm
5h 1m
estimated nonstop flight time
+3h
time difference · heading east
See live GRF→GAI fares Phone-only fares on this route — call free
Flight time details
2,320 miles nonstop takes roughly 5h 1m 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
- GRF — Gray Army Air Field · Fort Lewis, 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 GRF
- SEA · Seattle Tacoma International Airport29 mi away
- TCM · McChord Air Force Base6 mi away
- TIW · Tacoma Narrows Airport13 mi away
- OLM · Olympia Regional Airport17 mi away
Near GAI
Frequently asked questions
How far is GRF from GAI?
The flight distance from Fort Lewis (GRF) to Gaithersburg (GAI) is 2,320 miles (3,734 km, 2,016 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from GRF to GAI?
A nonstop flight takes about 5h 1m 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 Fort Lewis and Gaithersburg?
Gaithersburg is 3 hours ahead of Fort Lewis.
What is the cheapest way to fly from GRF to GAI?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on GRF–GAI that never appear on search engines, with no booking fees.