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USM to SQL: distance & flight time
Ko Samui (Samui Airport) → San Carlos (San Carlos Airport)
8,189 mi
13,179 km · 7,116 nm
16h 31m
estimated nonstop flight time
-14h
time difference · heading northeast
See live USM→SQL fares Phone-only fares on this route — call free
Flight time details
8,189 miles nonstop takes roughly 16h 31m 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
- SQL — San Carlos Airport · San Carlos, 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 SQL
- SFO · San Francisco International Airport10 mi away
- PAO · Palo Alto Airport of Santa Clara County8 mi away
- HWD · Hayward Executive Airport12 mi away
- NUQ · Moffett Federal Airfield13 mi away
Frequently asked questions
How far is USM from SQL?
The flight distance from Ko Samui (USM) to San Carlos (SQL) is 8,189 miles (13,179 km, 7,116 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from USM to SQL?
A nonstop flight takes about 16h 31m 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 Carlos?
San Carlos is 14 hours behind Ko Samui.
What is the cheapest way to fly from USM to SQL?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on USM–SQL that never appear on search engines, with no booking fees.