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GRF to TNN: distance & flight time
Fort Lewis (Gray Army Air Field) → Tainan (Tainan Airport)
6,223 mi
10,015 km · 5,408 nm
12h 40m
estimated nonstop flight time
+15h
time difference · heading northwest
See live GRF→TNN fares Phone-only fares on this route — call free
Flight time details
6,223 miles nonstop takes roughly 12h 40m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 15-hour time gain when reading arrival times on your ticket.
The two airports
- GRF — Gray Army Air Field · Fort Lewis, United States
- TNN — Tainan Airport · Tainan, Taiwan
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 TNN
- PIF · Pingtung North Airport25 mi away
- KHH · Kaohsiung International Airport27 mi away
- CYI · Chiayi Airport37 mi away
- WOT · Wang-an Airport53 mi away
Frequently asked questions
How far is GRF from TNN?
The flight distance from Fort Lewis (GRF) to Tainan (TNN) is 6,223 miles (10,015 km, 5,408 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from GRF to TNN?
A nonstop flight takes about 12h 40m 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 Tainan?
Tainan is 15 hours ahead of Fort Lewis.
What is the cheapest way to fly from GRF to TNN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on GRF–TNN that never appear on search engines, with no booking fees.