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USM to SAN: distance & flight time
Ko Samui (Samui Airport) → San Diego (San Diego International Airport)
8,622 mi
13,876 km · 7,493 nm
17h 22m
estimated nonstop flight time
-14h
time difference · heading northeast
See live USM→SAN fares Phone-only fares on this route — call free
Flight time details
8,622 miles nonstop takes roughly 17h 22m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 14-hour time set-back when reading arrival times on your ticket.
The two airports
- USM — Samui Airport · Ko Samui, Thailand
- SAN — San Diego International Airport · San Diego, 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 USM
- URT · Surat Thani Airport69 mi away
- NST · Nakhon Si Thammarat Airport70 mi away
- CJM · Chumphon Airport93 mi away
- UNN · Ranong Airport102 mi away
Near SAN
Frequently asked questions
How far is USM from SAN?
The flight distance from Ko Samui (USM) to San Diego (SAN) is 8,622 miles (13,876 km, 7,493 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from USM to SAN?
A nonstop flight takes about 17h 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 Ko Samui and San Diego?
San Diego is 14 hours behind Ko Samui.
What is the cheapest way to fly from USM to SAN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on USM–SAN that never appear on search engines, with no booking fees.