Cheap flights from San Francisco (SFO) to Koh Samui (USM)

Flight FAQs

From San Francisco to Koh Samui

Are flight prices decreasing from San Francisco to Koh Samui due to COVID-19 (coronavirus)?

At this time, Cheapflights has noticed price decreases for many domestic flights due to COVID-19. Travel is not necessarily recommended at this time, and flights may be prone to cancellation: please check with local authorities in both San Francisco and Koh Samui for travel alerts, and be sure to review the airline's cancellation policy and travel advisories before booking. For more information, please view our post on what to know about COVID-19 (coronavirus) and travel.

Are there nonstop flights from San Francisco to Koh Samui for under $900 on Cheapflights?

Cheapflights has 3 direct flights from San Francisco to Koh Samui under $900. A good price for a nonstop flight from San Francisco to Koh Samui is less than $862.

Are there last-minute flights available from San Francisco to Koh Samui for under $900?

There are currently just 3 open flights from San Francisco to Koh Samui within the next 7 days for less than $900.

Does it rain more in San Francisco or Koh Samui?

In San Francisco, there will be same rainfall in San Francisco compared to Koh Samui over the next 14 days.

Is San Francisco weather warmer or cooler than Koh Samui?

Expect the weather to be around 91 °F on average in May. As the temperature peaks, try to get your plans done early, as flight price and availability will have an impact on your travels. The climate in Koh Samui is generally hotter than in San Francisco.