Cheap flights from San Francisco to Ko Samui from $432
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from San Francisco to Ko Samui departing on 10/23. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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How to get the cheapest flight ticket from San Francisco to Ko Samui
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest month to fly to Ko Samui?
In general, October is the cheapest month to fly from San Francisco to Ko Samui. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $1,052. If you don’t want to visit Ko Samui in October, then you should wait until September to fly from San Francisco, when ticket prices are also cheap, with an average price of $1,077.
What is the cheapest day to depart on your flight to Ko Samui?
Our data shows that Monday is the least expensive day to fly to Ko Samui. Tickets to fly out on this day can be as low as $382. Flights from San Francisco to Ko Samui on a Friday will generally be more expensive and average around $515. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.
What is the cheapest time of day to depart on your flight to Ko Samui?
Our data shows that the cheapest San Francisco to Ko Samui flights are usually those with departure times at noon. Our users have found flights to Ko Samui at noon for as low as $310. In the morning is when there is more demand to fly to Ko Samui, so prices are often more expensive at around $433 per ticket.
Can stopping save me money on San Francisco to Ko Samui flights?
You could potentially save up to 56% on your flight if you consider stops on a San Francisco to Ko Samui flight.
When to book flights from San Francisco to Ko Samui
Cheap San Francisco to Ko Samui (SFO to USM) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from San Francisco to Ko Samui
How far is San Francisco to Ko Samui by plane?
San Francisco and Ko Samui are 8165.8 mi apart from one another. In terms of flight time, this usually takes a little over 22h 20m.
When did momondo last update prices for flights from San Francisco Airport to Ko Samui Airport?
Prices for flights from San Francisco Airport to Ko Samui Airport are refreshed on a daily basis.
How many operators does momondo search for flights from San Francisco Airport to Ko Samui Airport?
As of July 2025, there are 2 operators available to choose from for flights from San Francisco Airport to Ko Samui Airport.
How old do you have to be to fly from San Francisco Airport to Ko Samui Airport?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from San Francisco Airport to Ko Samui Airport.
What documentation or ID do you need to fly to Ko Samui Airport?
The travel and health documents required for your trip to Ko Samui Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Ko Samui Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular airline from San Francisco to Ko Samui?
Based on momondo bookings for this flight route, the most popular airline on flight routes from San Francisco to Ko Samui is Singapore Airlines (54% of total bookings). The next most popular airline is EVA Air (46%).
Best airlines flying from San Francisco to Ko Samui
Compare and see reviews for airlines that fly from San Francisco to Ko Samui with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $821 | Free Cancellation | Rating 8.1 1,320 reviews | |||
| PriceFrom $1,048 | Free Cancellation | Rating 8.4 1,214 reviews |
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Why should I use momondo to find a flight deal from San Francisco to Ko Samui?
It is quick and easy to find San Francisco to Ko Samui flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Ko Samui that suits you.
Can I find flights from San Francisco to Ko Samui with flexible booking policies on momondo?
Flights from San Francisco to Ko Samui with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.
How can momondo help me find flights from San Francisco to Ko Samui?
momondo provides multiple filters to help you find the best flight to Ko Samui from San Francisco. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.
I’m not ready to book a flight from San Francisco to Ko Samui right now. Can momondo alert me if prices change?
Yes. momondo can track prices for San Francisco to Ko Samui flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.