Cheap flights from San Diego (SAN) to Koh Samui (USM)
Find cheap flights from San Diego to Koh Samui with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Best time to book a flight from San Diego to Koh Samui
Have a flexible travel schedule? Discover the best time to fly to Koh Samui from San Diego with our price prediction graph.
Travel insights for flights from San Diego to Koh Samui
Get recent, data-driven insights about flights from San Diego to Koh Samui including ideal travel times, pricing trends, and more.
What is the cheapest time of day to fly from SAN to USM?
Find hourly flight availability from San Diego to Koh Samui. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated febrero 20, 2025.
When flying from San Diego to Koh Samui, the time of day you fly usually plays a role in the price. Save by searching for a flight in the afternoon, which can drop the price by up to 28% versus a flight at noon.
What is the cheapest day to fly from San Diego to Koh Samui?
Use this chart to determine the cheapest time to fly round-trip from San Diego to Koh Samui. Price data was last updated on February 16, 2025.
Travelers seeking maximum savings on their San Diego to Koh Samui flight should consider departing on Wednesday at noon when fares are most often at their lowest. Monday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
Rainfall in Koh Samui by month
Plan your trip to Koh Samui by taking into account the average rainfall totals by month.
In terms of precipitation, rainfall in Koh Samui ranges from 2.3 - 19.3 inches per month. November is typically the wettest month, when rainfall can reach 19.3 in. February is typically the driest time to visit Koh Samui when rainfall is around 2.3 in.
Temperature in Koh Samui by month
Plan your trip to Koh Samui by taking into account the average temperature totals by month.
If weather is an important factor for your trip to Koh Samui, use this chart to help with planning. For those seeking warmer temperatures, April is the ideal time of year to visit, when temperatures reach an average of 84.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 80.6 F).