Cheap Flights from Samui International to San Francisco International

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Compare Samui International to San Francisco International flight deals

Find the cheapest month or even day of the year to fly to San Francisco International

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Flight deals from Samui International to San Francisco International

Looking for a cheap last-minute deal or the best return flight from Samui International to San Francisco International? Find the lowest prices on one-way and return tickets right here.

Find the cheapest month to fly from Samui International to San Francisco International

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Samui International to San Francisco International flights are currently cheapest in May.

Samui International to San Francisco International: Alternative routes

Compare routes from Samui International to San Francisco below. You may find an airport to fly into that's cheaper, faster, or easier than San Francisco International.

Koh Samui to San Francisco: Flight information

The things to know before you go.
Cheapest flight foundR 8,214
Cheapest month to flyMay

Finding cheap flights from Samui International to San Francisco International: Frequently asked questions

The best price we found for a return flight from Samui International to San Francisco International is R 28,070. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
Currently, there are no airlines that fly direct from Samui International to San Francisco International. But we found flights with one or more stops from R 28,070.
As of April 2025, there are no flights flying from Samui International to San Francisco International.
The cheapest month to fly from Samui International to San Francisco International is usually April 2025.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Samui International Airport to San Francisco International Airport on Thursday, 8 May 2025.
No airlines currently offer direct flights between Samui International Airport and San Francisco International Airport. Most routes have one or more stops.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to San Francisco International but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to San Francisco is around 40 days in advance, so don’t leave your flight to the last minute.
Currently, Bangkok Airways offers the cheapest flight tickets to San Francisco International.

Travelling from Koh Samui Airport (USM) to San Francisco International Airport (SFO): what you need to know

  • San Francisco's timezone is UTC-7, making San Francisco 14 hours behind Koh Samui.

  • For a smooth journey, turn up at the airport two hours ahead of international flights and one hour before domestic departures. This will give you enough time to catch your USM to SFO flight.

  • Travelling during a peak time like July? Major public holidays and other popular seasons can lead to longer queues and delays at check-in and security. Be extra cautious and arrive up to four hours ahead of international flights and two hours before a domestic departure.

How to find the cheapest flights from Koh Samui Airport (USM) to San Francisco International Airport (SFO)

  • R 8,214 is currently the best price for a one-way Koh Samui Airport to San Francisco International Airport flight. Return flights start from R 28,070. These prices can change based on availability and demand.

  • Don't leave everything to the last moment. You're more likely to find cheap tickets from USM to SFO if you book ahead. Airlines often have some fantastic early bird rates.

  • The 'Whole month' search tool shows you the cheapest flights from Koh Samui Airport to San Francisco International Airport throughout the entire month. It's an easy way to snap up a bargain if your travel plans aren't set in stone.

  • You don't need to check every day to see if fares have gone down when you set up a Price Alert. We'll notify you the moment there's a better deal on cheap flights from USM to SFO.

  • Find the ideal flight for you by using the filters. To see the 'Fastest,' 'Cheapest' or 'Best' flights from Koh Samui Airport to San Francisco International Airport, use the 'Sort by' function. You can also filter by airline, arrival and departure times, and number of stops.

Handy information about Koh Samui Airport (USM)

  • 69.38% of flights taking off from Koh Samui Airport touch down at their destination on schedule.

  • To find the best way to travel from central Koh Samui to Koh Samui Airport, use navigation tools like Google Maps. The airport is approximately 3 kilometres from the city centre.

  • Taking an early flight from Koh Samui Airport to San Francisco International Airport? Avoid rushing to the airport (and sneak in some extra snooze time) by picking one of these stays near USM:

Arriving at San Francisco International Airport (SFO)

Getting from San Francisco International Airport (SFO) to central San Francisco

  • San Francisco International Airport to the centre of San Francisco has a drive time of about 20 minutes. It's approximately 21 kilometres away.

  • It takes roughly 45 minutes if you're travelling by public transport.

When to fly to San Francisco International Airport (SFO)

  • August is the busiest month for flights from Koh Samui Airport to San Francisco International Airport. For a quieter experience, travel to San Francisco in February.

  • Lock in your flight from Koh Samui Airport to San Francisco International Airport for September if you'd like to go to San Francisco during its warmest month. Expect temperatures of between 12ºC (54ºF) and 22ºC (72ºF).

  • January sees average temperatures of between 6ºC (43ºF) and 16ºC (61ºF). Search for cheap tickets from USM to SFO sometime then if you like travelling in cooler conditions.

Explore more of United States

  • You've done San Francisco, now it's time to discover other parts of United States. Travel around 64 kilometres south-east to San Jose to tick off its popular sights. From Winchester Mystery House to Rosicrucian Egyptian Museum and San Jose Museum of Art, you'll have a full itinerary ahead.

  • If you want to check out another corner of United States, head for Fresno, roughly 257 kilometres south-east of San Francisco. Forestiere Underground Gardens, Fresno Chaffee Zoo and Shinzen Japanese Garden are highlights.

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.