Flights from San Francisco to Koh Samui
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The quick answer
Compare San Francisco to Koh Samui flights across 800+ airlines for the lowest fare. Visa-free for US passport holders (Thailand).
Price calendar — San Francisco to Koh Samui
Month-by-month lowest fares. Green = cheapest dates.
Thailand essentials
🟢 Visa-free for US passport holders · up to 60 days
Visa exemption for US tourists, up to 60 days.
Full Koh Samui visa guide →🆘 Emergency
191 (police) · 1669 (ambulance)
💱 Currency
Thai Baht (฿)
🕐 Time zone
UTC+7
🗣️ Language
Thai
🔌 Plugs
Type A/B/C · 230V
🚗 Driving
Left side
💡 Tipping
Not required; round up
📞 Dial code
+66
🏛️ US Embassy
Bangkok · +66 2-205-4000
Entry rules can change — always confirm with official sources before booking.
Stay connected in Koh Samui
Skip roaming fees — get a local eSIM before you land. Works in 200+ countries and activates instantly, so you’re online the moment you touch down.
Travel insurance
Protect your San Francisco to Koh Samui trip against delays, cancellations, and medical emergencies. US travelers can compare plans from top insurers.
Airport transfer in Koh Samui
Pre-book your ride into Koh Samui. Fixed price, meet & greet, and a driver waiting at arrivals — no meter anxiety after a long flight.
Flight delayed or cancelled?
If your San Francisco to Koh Samui flight was delayed more than 3 hours or cancelled, you may be entitled to up to €600 in compensation under EU/UK rules — even if you flew a non-EU airline. Free to check, no win no fee.
More resources
San Francisco to Koh Samui — frequently asked
Are there direct flights from San Francisco to Koh Samui?+
This route is usually served by connecting flights. Use the search above to check for any direct options on your dates.
Do US citizens need a visa for Thailand?+
Visa-free for US passport holders for stays up to 60 days. Visa exemption for US tourists, up to 60 days.
What currency is used in Thailand?+
The Thai Baht (THB, ฿). The emergency number is 191 (police) · 1669 (ambulance).
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