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APC to USM: distance & flight time
Napa (Napa County Airport) → Ko Samui (Samui Airport)
8,156 mi
13,125 km · 7,087 nm
16h 28m
estimated nonstop flight time
+14h
time difference · heading northwest
See live APC→USM fares Phone-only fares on this route — call free
Flight time details
8,156 miles nonstop takes roughly 16h 28m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 14-hour time gain when reading arrival times on your ticket.
The two airports
- APC — Napa County Airport · Napa, United States
- USM — Samui Airport · Ko Samui, Thailand
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 APC
- SFO · San Francisco International Airport41 mi away
- NOT · Marin County Airport - Gnoss Field16 mi away
- SUU · Travis Air Force Base20 mi away
- CCR · Buchanan Field20 mi away
Near USM
- URT · Surat Thani Airport69 mi away
- NST · Nakhon Si Thammarat Airport70 mi away
- CJM · Chumphon Airport93 mi away
- UNN · Ranong Airport102 mi away
Frequently asked questions
How far is APC from USM?
The flight distance from Napa (APC) to Ko Samui (USM) is 8,156 miles (13,125 km, 7,087 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from APC to USM?
A nonstop flight takes about 16h 28m 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 Napa and Ko Samui?
Ko Samui is 14 hours ahead of Napa.
What is the cheapest way to fly from APC to USM?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on APC–USM that never appear on search engines, with no booking fees.