$459+ Cheap flights from San Francisco (SFO) to Ko Samui (USM)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/11. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — USM
Oct 10 — Oct 171
Round-trip
1 adult, Economy
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Find cheap flights from San Francisco to Ko 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.Cheap flight deals from San Francisco to Ko Samui
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Best
Last-minute
One-way
Cheapest flights from San Francisco to Ko SamuiExplore the most affordable flight options available from San Francisco to Ko Samui. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 10, 2026.
Explore the most affordable flight options available from San Francisco to Ko Samui. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 10, 2026.
This Gotogate deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/91:20 am -
1 stop28h 20m
Wed 9/2311:55 am -
1 stop24h 45m
Deal found 9/7![Cathay Pacific logo]()
$824
This Booking.com deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/1712:20 am -
2 stops24h 50m
Mon 11/162:15 pm -
2 stops21h 40m
Deal found 9/6![Multiple Airlines logo]()
$832
This Gotogate deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/91:20 am -
2 stops25h 45m
Wed 9/2311:55 am -
1 stop24h 45m
Deal found 9/7![Multiple Airlines logo]()
$834
This KAYAK deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/110:55 pm -
2 stops25h 40m
Sat 11/142:05 pm -
2 stops21h 50m
Deal found 9/6![Multiple Airlines logo]()
$850
This FlightHub deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/2610:40 am -
1 stop40h 30m
Tue 11/106:05 pm -
1 stop28h 45m
Deal found 9/6![Singapore Airlines logo]()
$875
This oojo deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/1111:45 am -
1 stop41h 05m
Sun 10/188:40 am -
1 stop39h 10m
Deal found 9/6![Singapore Airlines logo]()
$897
This SmartFares deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/311:25 am -
2 stops28h 45m
Fri 11/1310:20 am -
2 stops25h 35m
Deal found 9/8![Multiple Airlines logo]()
$922
This Justfly.com deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/1811:45 am -
1 stop41h 05m
Mon 11/1612:00 pm -
1 stop34h 50m
Deal found 9/6![Singapore Airlines logo]()
$923
This Justfly.com deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/39:40 am -
1 stop40h 30m
Fri 11/136:05 pm -
1 stop28h 45m
Deal found 9/8![Singapore Airlines logo]()
$956
This SmartFares deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/111:00 pm -
2 stops33h 45m
Sun 10/1811:55 am -
1 stop37h 00m
Deal found 9/6![Multiple Airlines logo]()
$978
Best flights from San Francisco to Ko SamuiDiscover carefully curated flight deals from San Francisco to Ko Samui that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 10, 2026.
Discover carefully curated flight deals from San Francisco to Ko Samui that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 10, 2026.
This oojo deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/1111:45 am -
1 stop41h 05m
Sun 10/188:40 am -
1 stop39h 10m
Deal found 9/6![Singapore Airlines logo]()
$897
This SmartFares deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/312:20 am -
2 stops22h 25m
Sat 10/109:15 am -
2 stops27h 25m
Deal found 9/9![Multiple Airlines logo]()
$1,054
This EVA Air deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure EVA Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2812:10 am -
2 stops25h 25m
Mon 11/28:30 am -
2 stops21h 30m
Deal found 9/6![EVA Air logo]()
$1,141
This Justfly.com deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/39:40 am -
1 stop40h 30m
Fri 11/136:05 pm -
1 stop28h 45m
Deal found 9/8![Singapore Airlines logo]()
$956
This Singapore Airlines deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Singapore Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/2910:40 am -
1 stop40h 30m
Mon 11/212:00 pm -
1 stop34h 50m
Deal found 9/7![Singapore Airlines logo]()
$1,127
This Singapore Airlines deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Singapore Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/229:40 am -
1 stop31h 20m
Mon 11/307:45 pm -
1 stop27h 05m
Deal found 9/6![Singapore Airlines logo]()
$1,196
This Mytrip deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/311:45 am -
3 stops32h 10m
Fri 11/137:10 pm -
2 stops33h 10m
Deal found 9/8![Multiple Airlines logo]()
$1,456
This oojo deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/19:40 am -
1 stop34h 15m
Sat 11/146:05 pm -
1 stop28h 45m
Deal found 9/6![Singapore Airlines logo]()
$1,425
Last-minute flights from San Francisco to Ko SamuiDiscover last-minute flight deals from San Francisco to Ko Samui. Data last updated September 10, 2026 and is based on user searches.
Discover last-minute flight deals from San Francisco to Ko Samui. Data last updated September 10, 2026 and is based on user searches.
This Gotogate deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/91:20 am -
1 stop28h 20m
Wed 9/2311:55 am -
1 stop24h 45m
Deal found 9/7![Cathay Pacific logo]()
$824
This Gotogate deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/91:20 am -
2 stops25h 45m
Wed 9/2311:55 am -
1 stop24h 45m
Deal found 9/7![Multiple Airlines logo]()
$834
This SmartFares deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/41:00 pm -
2 stops28h 10m
Sat 10/109:15 am -
2 stops27h 25m
Deal found 9/4![Multiple Airlines logo]()
$942
This oojo deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/1111:45 am -
1 stop41h 05m
Sun 10/188:40 am -
1 stop39h 10m
Deal found 9/6![Singapore Airlines logo]()
$897
This SmartFares deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/111:00 pm -
2 stops33h 45m
Sun 10/1811:55 am -
1 stop37h 00m
Deal found 9/6![Multiple Airlines logo]()
$978
This Booking.com deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/1712:20 am -
2 stops24h 50m
Mon 11/162:15 pm -
2 stops21h 40m
Deal found 9/6![Multiple Airlines logo]()
$832
This Justfly.com deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/1811:45 am -
1 stop41h 05m
Mon 11/1612:00 pm -
1 stop34h 50m
Deal found 9/6![Singapore Airlines logo]()
$923
This FlightHub deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/2610:40 am -
1 stop40h 30m
Tue 11/106:05 pm -
1 stop28h 45m
Deal found 9/6![Singapore Airlines logo]()
$875
One-way flights from San Francisco to Ko SamuiSearch for one-way flight options from San Francisco to Ko Samui. Find affordable one-way fares based on user searches. Data last updated September 10, 2026.
Search for one-way flight options from San Francisco to Ko Samui. Find affordable one-way fares based on user searches. Data last updated September 10, 2026.
This Kiwi.com deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/113:20 pm -
2 stops49h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/8![Multiple Airlines logo]()
$459
This FlightHub deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/2012:20 am -
2 stops26h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/6![Multiple Airlines logo]()
$460
This Kiwi.com deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/73:20 pm -
2 stops48h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/8![Multiple Airlines logo]()
$469
This Vliegwinkel deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Vliegwinkel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/41:00 pm -
1 stop40h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/4![Cathay Pacific logo]()
$477
This KAYAK deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/2012:20 am -
1 stop29h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/6![Cathay Pacific logo]()
$498
This Trip.com deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/312:30 am -
2 stops40h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/4![Multiple Airlines logo]()
$506
This Kiwi.com deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/1210:40 pm -
2 stops41h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/8![Multiple Airlines logo]()
$526
This Kiwi.com deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1011:00 pm -
2 stops41h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/8![Multiple Airlines logo]()
$529
This Trip.com deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/211:05 am -
2 stops40h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/6![Multiple Airlines logo]()
$548
Find flight deals from San Francisco to Ko Samui
Discover tips and strategies to find the most affordable flight options for your journey from San Francisco (SFO) to Ko Samui (USM). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 10, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $832 (Booking.com) |
One-way from | $459 (Kiwi.com) |
Popular in | May |
Cheapest in | November |
Average price | $1,028 |
Cheapflights Fare Finder
Customize your flight search to find flights from San Francisco to Ko Samui that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated September 10, 2026.
Use the filters below to find and compare flights from San Francisco to Ko Samui that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
San FranciscoKo Samui
SFO San Francisco - USM Ko Samui
SFOUSM
San Francisco
Sun 10/4
1:00 pm-7:40 pm
1 stop40h 40m
Ko Samui
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$477
San FranciscoKo Samui
SFO San Francisco - USM Ko Samui
SFOUSM
San Francisco
Sun 9/20
12:20 am-7:40 pm
1 stop29h 20m
Ko Samui
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$498
Quickest round-trip
San FranciscoKo Samui
SFO San Francisco - USM Ko Samui
SFOUSM
San Francisco
Sun 10/4
11:20 pm-4:50 pm
2 stops27h 30m
Ko Samui
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$506
San FranciscoKo Samui
SFO San Francisco - USM Ko Samui
SFOUSM
San Francisco
Thu 11/12
4:46 pm-3:20 pm
3 stops31h 34m
Ko Samui
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$561
San FranciscoKo Samui
SFO San Francisco - USM Ko Samui
SFOUSM
San Francisco
Thu 10/22
1:00 pm-7:40 pm
1 stop40h 40m
Ko Samui
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$568
San FranciscoKo Samui
SFO San Francisco - USM Ko Samui
SFOUSM
San Francisco
Wed 11/11
4:46 pm-12:35 pm
3 stops28h 49m
Ko Samui
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$587
San FranciscoKo Samui
SFO San Francisco - USM Ko Samui
SFOUSM
San Francisco
Thu 10/22
7:27 am-7:10 am
3 stops33h 43m
Ko Samui
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$591
San FranciscoKo Samui
SFO San Francisco - USM Ko Samui
SFOUSM
San Francisco
Sun 10/11
11:45 am-6:50 pm
1 stop41h 05m
Ko Samui
Sun 10/18
8:40 am-9:50 am
1 stop39h 10m
$897
San FranciscoKo Samui
SFO San Francisco - USM Ko Samui
SFOUSM
San Francisco
Tue 11/3
9:40 am-5:10 pm
1 stop40h 30m
Ko Samui
Fri 11/13
6:05 pm-7:50 am
1 stop28h 45m
$956
San FranciscoKo Samui
SFO San Francisco - USM Ko Samui
SFOUSM
San Francisco
Sat 10/3
12:20 am-12:45 pm
2 stops22h 25m
Ko Samui
Sat 10/10
9:15 am-10:40 pm
2 stops27h 25m
$1,054
Showing 1-10 of 15 resultsSorted by cheapest first
Compare providers for flights from San Francisco to Ko Samui
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from San Francisco to Ko Samui in September.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on San Francisco-Ko Samui flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on San Francisco-Ko Samui flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from San Francisco-Ko Samui flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on San Francisco-Ko Samui flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for San Francisco-Ko Samui flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from San Francisco to Ko Samui
Have a flexible travel schedule? Discover the best time to fly to Ko Samui from San Francisco with our price prediction graph.
SFO-USM
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from San Francisco to Ko Samui
Prices
Delays
How often are flights from San Francisco to Ko Samui delayed?
About 21% of weekly flights between San Francisco and Ko Samui have experienced delays in the past year, with the average delay time being 159 minutes.
What is the most punctual flight time for San Francisco to Ko Samui flights?
Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving at night tend to experience delays more often.
What day of the week experiences the fewest flight delays on this route?
Saturday tends to have the lowest number of delays on this route, whereas Thursday has historically faced a higher average of delays compared to other days of the week.
Which airline has the best punctuality record on San Francisco to Ko Samui flights?
Over the last year, United Airlines have had the lowest number of delays on this route, with just 18% of flights being delayed.
Reviews of airlines servicing Ko Samui
Get insights into the airlines that provide service to Ko Samui. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Ko Samui. Reviews last updated September 10, 2026.
Get a feel of what it's like to fly with EVA Air and Singapore Airlines from San Francisco to Ko Samui by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Crew
8.7
Comfort
8.3
Entertainment
8.0
Boarding
8.5
Food
8.1
Overall
8.5
Reviews
1 / 20
10.0
ExcellentDaisy,May 2026
SFO - TPE
Crew
8.7
Comfort
8.3
Entertainment
8.0
Boarding
8.5
Food
8.1
Overall
8.5
Reviews
1 / 20
10.0
ExcellentDaisy,May 2026
SFO - TPE
Crew
8.7
Comfort
8.3
Entertainment
8.0
Boarding
8.5
Food
8.1
Overall
8.5
Reviews
1 / 20
10.0
ExcellentDaisy,May 2026
SFO - TPE
Related info for your journey
Find useful and relevant information for your journey from San Francisco to Ko Samui. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near Ko Samui?
Book flights to Ko Samui if you plan to visit one of these locationsKo Tao
Ko Pha Ngan
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
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Complete your trip
Complete your trip to Ko Samui by adding a car rental and/or hotel reservation to your travel itinerary.
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Other flights to Ko Samui
Explore flights to Ko Samui departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on September 10, 2026.
San Francisco and Ko Samui flights
Browse other San Francisco and Ko Samui flight options. Last updated on September 10, 2026.
Other flights from San Francisco
Browse through other flights departing from San Francisco. Flights are based on user searches made on Cheapflights and were last updated on September 10, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 2 airlines flying from San Francisco to Ko Samui
Discover the top 2 airlines that operate flights from San Francisco to Ko Samui. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated September 10, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$817 | Average$911 | FlexibilityNo cancel fee | On-time81% | |
| Cheapest$940 | Average$1,102 | FlexibilityNo cancel fee | On-time74% |