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GRF to YSP: distance & flight time
Fort Lewis (Gray Army Air Field) → Marathon (Marathon Airport)
1,666 mi
2,681 km · 1,448 nm
3h 44m
estimated nonstop flight time
+3h
time difference · heading east
See live GRF→YSP fares Phone-only fares on this route — call free
Flight time details
1,666 miles nonstop takes roughly 3h 44m 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
- YSP — Marathon Airport · Marathon, Canada
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 YSP
- YMG · Manitouwadge Airport32 mi away
- YGQ · Geraldton Greenstone Regional Airport76 mi away
- YHN · Hornepayne Municipal Airport78 mi away
- YXZ · Wawa Airport90 mi away
Frequently asked questions
How far is GRF from YSP?
The flight distance from Fort Lewis (GRF) to Marathon (YSP) is 1,666 miles (2,681 km, 1,448 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from GRF to YSP?
A nonstop flight takes about 3h 44m 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 Marathon?
Marathon is 3 hours ahead of Fort Lewis.
What is the cheapest way to fly from GRF to YSP?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on GRF–YSP that never appear on search engines, with no booking fees.