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GRF to ONO: distance & flight time
Fort Lewis (Gray Army Air Field) → Ontario (Ontario Municipal Airport)
342 mi
551 km · 297 nm
1h 22m
estimated nonstop flight time
+1h
time difference · heading southeast
See live GRF→ONO fares Phone-only fares on this route — call free
Flight time details
342 miles nonstop takes roughly 1h 22m gate to gate, flying southeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 1-hour time gain when reading arrival times on your ticket.
The two airports
- GRF — Gray Army Air Field · Fort Lewis, United States
- ONO — Ontario Municipal Airport · Ontario, 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 ONO
- BOI · Boise Air Terminal/Gowen Field50 mi away
- BKE · Baker City Municipal Airport69 mi away
- MYL · McCall Municipal Airport75 mi away
- MUO · Mountain Home Air Force Base88 mi away
Frequently asked questions
How far is GRF from ONO?
The flight distance from Fort Lewis (GRF) to Ontario (ONO) is 342 miles (551 km, 297 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from GRF to ONO?
A nonstop flight takes about 1h 22m 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 Ontario?
Ontario is 1 hour ahead of Fort Lewis.
What is the cheapest way to fly from GRF to ONO?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on GRF–ONO that never appear on search engines, with no booking fees.