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GRF to ISA: distance & flight time
Fort Lewis (Gray Army Air Field) → Mount Isa (Mount Isa Airport)
7,618 mi
12,261 km · 6,620 nm
15h 24m
estimated nonstop flight time
+17h
time difference · heading west
See live GRF→ISA fares Phone-only fares on this route — call free
Flight time details
7,618 miles nonstop takes roughly 15h 24m gate to gate, flying west. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 17-hour time gain when reading arrival times on your ticket.
The two airports
- GRF — Gray Army Air Field · Fort Lewis, United States
- ISA — Mount Isa Airport · Mount Isa, Australia
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 ISA
- CNJ · Cloncurry Airport66 mi away
- JCK · Julia Creek Airport144 mi away
Frequently asked questions
How far is GRF from ISA?
The flight distance from Fort Lewis (GRF) to Mount Isa (ISA) is 7,618 miles (12,261 km, 6,620 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from GRF to ISA?
A nonstop flight takes about 15h 24m 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 Mount Isa?
Mount Isa is 17 hours ahead of Fort Lewis.
What is the cheapest way to fly from GRF to ISA?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on GRF–ISA that never appear on search engines, with no booking fees.