$632+ Cheap flights from San Francisco (SFO) to Ko Samui (USM)
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/28. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — USM
May 29 — Jun 51
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
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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 April 29, 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 April 29, 2026.
This Justfly.com deal was found by Cheapflights users on 4/28. 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.
Mon 9/711:45 am
SFO
- USM
1 stop30h 00m
Singapore Airlines
Mon 9/146:15 pm
USM
- SFO
1 stop29h 35m
Singapore Airlines
Deal found 4/28![Singapore Airlines logo]()
$907
This Justfly.com deal was found by Cheapflights users on 4/27. 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.
Thu 11/199:40 am
SFO
- USM
1 stop34h 20m
Singapore Airlines
Mon 11/3012:00 pm
USM
- SFO
1 stop34h 50m
Singapore Airlines
Deal found 4/27![Singapore Airlines logo]()
$931
This oojo deal was found by Cheapflights users on 4/29. 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.
Mon 9/2111:45 am
SFO
- USM
1 stop39h 35m
Singapore Airlines
Fri 9/257:45 pm
USM
- SFO
1 stop28h 05m
Singapore Airlines
Deal found 4/29![Singapore Airlines logo]()
$955
This oojo deal was found by Cheapflights users on 4/27. 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 11/229:40 am
SFO
- USM
1 stop31h 20m
Singapore Airlines
Mon 11/308:55 am
USM
- SFO
1 stop37h 55m
Singapore Airlines
Deal found 4/27![Singapore Airlines logo]()
$979
This oojo deal was found by Cheapflights users on 4/29. 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.
Sat 9/511:45 am
SFO
- USM
1 stop30h 00m
Singapore Airlines
Fri 9/187:45 pm
USM
- SFO
1 stop28h 05m
Singapore Airlines
Deal found 4/29![Singapore Airlines logo]()
$1,000
This KAYAK deal was found by Cheapflights users on 4/24. 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.
Tue 11/179:40 am
SFO
- USM
1 stop31h 20m
Singapore Airlines
Sun 11/297:45 pm
USM
- SFO
1 stop27h 05m
Singapore Airlines
Deal found 4/24![Singapore Airlines logo]()
$1,122
This BusinessClass deal was found by Cheapflights users on 4/27. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/189:40 am
SFO
- USM
1 stop31h 20m
Singapore Airlines
Mon 11/3012:00 pm
USM
- SFO
1 stop34h 50m
Singapore Airlines
Deal found 4/27![Singapore Airlines logo]()
$1,123
This KAYAK deal was found by Cheapflights users on 4/24. 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.
Mon 11/169:40 am
SFO
- USM
1 stop34h 20m
Singapore Airlines
Sun 11/297:45 pm
USM
- SFO
1 stop27h 05m
Singapore Airlines
Deal found 4/24![Singapore Airlines logo]()
$1,128
This Ovago deal was found by Cheapflights users on 4/28. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/712:25 pm
SFO
- USM
2 stops30h 10m
Japan Airlines
Mon 9/147:50 am
USM
- SFO
2 stops40h 15m
Japan Airlines
Deal found 4/28![Japan Airlines logo]()
$1,138
This Japan Airlines deal was found by Cheapflights users on 4/27. 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 Japan Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/1412:25 pm
SFO
- USM
2 stops30h 55m
Japan Airlines
Thu 9/179:00 pm
USM
- SFO
2 stops28h 55m
Japan Airlines
Deal found 4/27![Japan Airlines logo]()
$1,143
This Booking.com deal was found by Cheapflights users on 4/29. 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 9/51:55 pm
SFO
- USM
2 stops27h 15m
Multiple Airlines
Fri 9/186:55 pm
USM
- SFO
2 stops31h 00m
Multiple Airlines
Deal found 4/29![Multiple Airlines logo]()
$1,153
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 April 29, 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 April 29, 2026.
This oojo deal was found by Cheapflights users on 4/29. 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.
Tue 7/2811:45 am
SFO
- USM
1 stop39h 35m
Singapore Airlines
Tue 8/117:45 pm
USM
- SFO
1 stop28h 05m
Singapore Airlines
Deal found 4/29![Singapore Airlines logo]()
$1,419
This Qatar Airways deal was found by Cheapflights users on 4/29. 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 Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/283:55 pm
SFO
- USM
2 stops28h 35m
Qatar Airways
Tue 8/117:00 pm
USM
- SFO
2 stops56h 35m
Qatar Airways
Deal found 4/29![Qatar Airways logo]()
$1,483
This Gotogate deal was found by Cheapflights users on 4/24. 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.
Thu 5/2112:50 am
SFO
- USM
2 stops27h 25m
Multiple Airlines
Fri 5/2910:05 am
USM
- SFO
2 stops23h 50m
Multiple Airlines
Deal found 4/24![Multiple Airlines logo]()
$1,697
This Malaysia Airlines deal was found by Cheapflights users on 4/25. 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 Malaysia Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/91:20 am
SFO
- USM
3 stops29h 05m
Malaysia Airlines
Wed 6/178:45 am
USM
- SFO
3 stops40h 40m
Malaysia Airlines
Deal found 4/25![Malaysia Airlines logo]()
$2,896
This Emirates deal was found by Cheapflights users on 4/28. 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 Emirates is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/114:05 pm
SFO
- USM
2 stops34h 50m
Emirates
Thu 5/145:55 pm
USM
- SFO
2 stops34h 05m
Emirates
Deal found 4/28![Emirates logo]()
$3,268
This Mytrip deal was found by Cheapflights users on 4/28. 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.
Sat 6/64:30 pm
SFO
- USM
3 stops31h 15m
Multiple Airlines
Sun 6/147:50 am
USM
- SFO
2 stops26h 05m
Multiple Airlines
Deal found 4/28![Multiple Airlines logo]()
$1,900
This Expedia deal was found by Cheapflights users on 4/25. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/1412:50 am
SFO
- USM
2 stops24h 20m
Multiple Airlines
Mon 8/39:00 pm
USM
- SFO
2 stops38h 00m
Multiple Airlines
Deal found 4/25![Multiple Airlines logo]()
$1,993
This KAYAK deal was found by Cheapflights users on 4/27. 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.
Mon 7/2711:45 am
SFO
- USM
1 stop32h 25m
Singapore Airlines
Mon 8/36:15 pm
USM
- SFO
1 stop29h 35m
Singapore Airlines
Deal found 4/27![Singapore Airlines logo]()
$2,453
This Malaysia Airlines deal was found by Cheapflights users on 4/26. 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 Malaysia Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/141:20 am
SFO
- USM
3 stops29h 30m
Malaysia Airlines
Mon 8/38:00 am
USM
- SFO
3 stops29h 15m
Malaysia Airlines
Deal found 4/26![Malaysia Airlines logo]()
$3,453
Last-minute flights from San Francisco to Ko SamuiDiscover last-minute flight deals from San Francisco to Ko Samui. Data last updated April 29, 2026 and is based on user searches.
Discover last-minute flight deals from San Francisco to Ko Samui. Data last updated April 29, 2026 and is based on user searches.
This Booking.com deal was found by Cheapflights users on 4/25. 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.
Mon 5/412:50 am
SFO
- USM
2 stops23h 55m
Multiple Airlines
Sat 5/92:35 pm
USM
- SFO
2 stops19h 55m
Multiple Airlines
Deal found 4/25![Multiple Airlines logo]()
$1,298
This BusinessClass deal was found by Cheapflights users on 4/25. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/51:00 pm
SFO
- USM
1 stop40h 40m
Cathay Pacific
Sat 5/911:55 am
USM
- SFO
1 stop37h 00m
Cathay Pacific
Deal found 4/25![Cathay Pacific logo]()
$1,602
This Qatar Airways deal was found by Cheapflights users on 4/25. 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 Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/510:46 am
SFO
- USM
3 stops34h 19m
Qatar Airways
Sat 5/99:00 pm
USM
- SFO
3 stops39h 00m
Qatar Airways
Deal found 4/25![Qatar Airways logo]()
$2,273
This BusinessClass deal was found by Cheapflights users on 4/28. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/51:05 am
SFO
- USM
2 stops22h 05m
Multiple Airlines
Fri 5/2211:45 am
USM
- SFO
2 stops22h 10m
Multiple Airlines
Deal found 4/28![Multiple Airlines logo]()
$5,895
This Arangrant deal was found by Cheapflights users on 4/25. 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 Arangrant is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/51:15 am
SFO
- USM
2 stops21h 55m
EVA Air
Fri 5/229:00 pm
USM
- SFO
2 stops23h 45m
EVA Air
Deal found 4/25![EVA Air logo]()
$6,920
This Qatar Airways deal was found by Cheapflights users on 4/25. 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 Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/610:42 am
SFO
- USM
3 stops34h 23m
Qatar Airways
Fri 5/228:50 pm
USM
- SFO
3 stops37h 26m
Qatar Airways
Deal found 4/25![Qatar Airways logo]()
$7,348
This BusinessClass deal was found by Cheapflights users on 4/24. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/61:00 pm
SFO
- USM
1 stop40h 40m
Cathay Pacific
Fri 5/2211:55 am
USM
- SFO
1 stop24h 45m
Cathay Pacific
Deal found 4/24![Cathay Pacific logo]()
$7,433
This Emirates deal was found by Cheapflights users on 4/25. 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 Emirates is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/84:05 pm
SFO
- USM
2 stops39h 30m
Emirates
Mon 5/118:00 am
USM
- SFO
2 stops44h 00m
Emirates
Deal found 4/25![Emirates logo]()
$1,879
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 April 29, 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 April 29, 2026.
This Kiwi.com deal was found by Cheapflights users on 4/25. 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 7/285:15 pm
SFO
- USM
2 stops34h 05m
Multiple Airlines
Deal found 4/25![Multiple Airlines logo]()
$632
This FlightHub deal was found by Cheapflights users on 4/25. 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.
Tue 7/2811:45 am
SFO
- USM
1 stop41h 05m
Singapore Airlines
Deal found 4/25![Singapore Airlines logo]()
$634
This SmartFares deal was found by Cheapflights users on 4/25. 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 5/121:15 am
SFO
- USM
2 stops21h 55m
EVA Air
Deal found 4/25![EVA Air logo]()
$638
This Kiwi.com deal was found by Cheapflights users on 4/26. 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 5/121:15 am
SFO
- USM
3 stops26h 45m
Multiple Airlines
Deal found 4/26![Multiple Airlines logo]()
$765
This Kiwi.com deal was found by Cheapflights users on 4/27. 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 7/13:30 pm
SFO
- USM
2 stops50h 45m
Multiple Airlines
Deal found 4/27![Multiple Airlines logo]()
$868
This KAYAK deal was found by Cheapflights users on 4/26. 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.
Wed 5/131:00 pm
SFO
- USM
1 stop40h 40m
Cathay Pacific
Deal found 4/26![Cathay Pacific logo]()
$1,047
This SmartFares deal was found by Cheapflights users on 4/28. 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.
Thu 5/2112:30 pm
SFO
- USM
2 stops29h 45m
EVA Air
Deal found 4/28![EVA Air logo]()
$1,181
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 April 29, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $907 (Justfly.com) |
One-way from | $632 (Kiwi.com) |
Popular in | July |
Cheapest in | November |
Average price | $1,118 |
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 2,558,603 searches. Data last updated April 29, 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 - USM
SFOUSM
San Francisco
Tue 7/28
11:45 am-5:20 pm
1 stop39h 35m
Ko Samui
Tue 8/11
7:45 pm-9:50 am
1 stop28h 05m
$1,419
San FranciscoKo Samui
SFO - USM
SFOUSM
San Francisco
Tue 7/28
3:55 pm-10:30 am
2 stops28h 35m
Ko Samui
Tue 8/11
7:00 pm-1:35 pm
2 stops56h 35m
$1,483
Quickest round-trip
San FranciscoKo Samui
SFO - USM
SFOUSM
San Francisco
Thu 5/21
12:50 am-6:15 pm
2 stops27h 25m
Ko Samui
Fri 5/29
10:05 am-7:55 pm
2 stops23h 50m
$1,697
San FranciscoKo Samui
SFO - USM
SFOUSM
San Francisco
Sat 6/6
4:30 pm-1:45 pm
3 stops31h 15m
Ko Samui
Sun 6/14
7:50 am-7:55 pm
2 stops26h 05m
$1,900
San FranciscoKo Samui
SFO - USM
SFOUSM
San Francisco
Sun 6/14
12:50 am-3:10 pm
2 stops24h 20m
Ko Samui
Mon 8/3
9:00 pm-9:00 pm
2 stops38h 00m
$1,993
San FranciscoKo Samui
SFO - USM
SFOUSM
San Francisco
Mon 7/27
11:45 am-10:10 am
1 stop32h 25m
Ko Samui
Mon 8/3
6:15 pm-9:50 am
1 stop29h 35m
$2,453
San FranciscoKo Samui
SFO - USM
SFOUSM
San Francisco
Tue 6/9
1:20 am-8:25 pm
3 stops29h 05m
Ko Samui
Wed 6/17
8:45 am-11:25 am
3 stops40h 40m
$2,896
San FranciscoKo Samui
SFO - USM
SFOUSM
San Francisco
Mon 5/11
4:05 pm-4:55 pm
2 stops34h 50m
Ko Samui
Thu 5/14
5:55 pm-2:00 pm
2 stops34h 05m
$3,268
San FranciscoKo Samui
SFO - USM
SFOUSM
San Francisco
Sun 6/14
1:20 am-8:50 pm
3 stops29h 30m
Ko Samui
Mon 8/3
8:00 am-11:15 pm
3 stops29h 15m
$3,453
Cheapest one-way
San FranciscoKo Samui
SFO - USM
SFOUSM
San Francisco
Tue 7/28
5:15 pm-5:20 pm
2 stops34h 05m
$632
Showing 1-10 of 17 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 April.
| 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 15% of weekly flights between San Francisco and Ko Samui have experienced delays in the past year, with the average delay time being 156 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 in the early afternoon 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 Monday 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 10% 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 April 29, 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.
Boarding
8.4
Crew
8.6
Comfort
8.3
Entertainment
8.0
Food
8.1
Overall
8.5
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
TPE - SFO
Boarding
8.4
Crew
8.6
Comfort
8.3
Entertainment
8.0
Food
8.1
Overall
8.5
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
TPE - SFO
Boarding
8.4
Crew
8.6
Comfort
8.3
Entertainment
8.0
Food
8.1
Overall
8.5
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
TPE - SFO
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Ko Pha Ngan
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| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$796 | Average$1,215 | FlexibilityNo cancel fee | On-time81% | |
| Cheapest$1,001 | Average$1,098 | FlexibilityNo cancel fee | On-time74% |