$558+ Cheap flights from San Francisco (SFO) to Siem Reap, Cambodia (SAI)
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 7/19. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — SAI
Jun 13 — Jun 201
Round-trip
1 adult, Economy
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Find cheap flights from San Francisco to Siem Reap 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 Siem Reap
Cheapest
Best
Last-minute
One-way
Cheapest flights from San Francisco to Siem ReapExplore the most affordable flight options available from San Francisco to Siem Reap. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 14, 2026.
Explore the most affordable flight options available from San Francisco to Siem Reap. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 14, 2026.
This Justfly.com deal was found by Cheapflights users on 5/11. 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 9/1412:00 pm
SFO
- SAI
2 stops42h 10m
China Eastern
Wed 10/219:10 pm
SAI
- SFO
2 stops25h 55m
China Eastern
Deal found 5/11![China Eastern logo]()
$762
This oojo deal was found by Cheapflights users on 5/11. 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 9/1411:45 am
SFO
- SAI
1 stop37h 25m
Singapore Airlines
Wed 10/214:00 pm
SAI
- SFO
1 stop31h 50m
Singapore Airlines
Deal found 5/11![Singapore Airlines logo]()
$794
This oojo deal was found by Cheapflights users on 5/12. 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.
Thu 9/1711:45 am
SFO
- SAI
1 stop31h 55m
Singapore Airlines
Tue 10/2010:30 am
SAI
- SFO
1 stop37h 20m
Singapore Airlines
Deal found 5/12![Singapore Airlines logo]()
$819
This oojo deal was found by Cheapflights users on 5/12. 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
SFO
- SAI
1 stop39h 15m
Singapore Airlines
Fri 11/610:45 am
SAI
- SFO
1 stop36h 05m
Singapore Airlines
Deal found 5/12![Singapore Airlines logo]()
$839
This oojo deal was found by Cheapflights users on 5/11. 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.
Fri 11/69:40 am
SFO
- SAI
1 stop39h 15m
Singapore Airlines
Wed 11/1810:45 am
SAI
- SFO
1 stop36h 05m
Singapore Airlines
Deal found 5/11![Singapore Airlines logo]()
$855
This oojo deal was found by Cheapflights users on 5/13. 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 10/2010:19 am
SFO
- SAI
3 stops33h 21m
Singapore Airlines
Wed 10/284:45 pm
SAI
- SFO
1 stop30h 05m
Singapore Airlines
Deal found 5/13![Singapore Airlines logo]()
$896
This oojo deal was found by Cheapflights users on 5/13. 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.
Fri 11/279:40 am
SFO
- SAI
1 stop39h 15m
Singapore Airlines
Tue 12/2210:45 am
SAI
- SFO
1 stop36h 05m
Singapore Airlines
Deal found 5/13![Singapore Airlines logo]()
$981
This oojo deal was found by Cheapflights users on 5/9. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/1612:20 am
SFO
- SAI
2 stops28h 35m
Multiple Airlines
Tue 10/209:40 am
SAI
- SFO
2 stops27h 00m
Multiple Airlines
Deal found 5/9![Multiple Airlines logo]()
$989
This KAYAK deal was found by Cheapflights users on 5/13. 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 8/311:20 am
SFO
- SAI
2 stops27h 35m
Multiple Airlines
Thu 10/112:55 pm
SAI
- SFO
2 stops23h 45m
Multiple Airlines
Deal found 5/13![Multiple Airlines logo]()
$1,026
Best flights from San Francisco to Siem ReapDiscover carefully curated flight deals from San Francisco to Siem Reap that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated May 14, 2026.
Discover carefully curated flight deals from San Francisco to Siem Reap that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated May 14, 2026.
This oojo deal was found by Cheapflights users on 5/13. 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.
Fri 11/69:40 am
SFO
- SAI
1 stop39h 15m
Singapore Airlines
Wed 11/1810:45 am
SAI
- SFO
1 stop36h 05m
Singapore Airlines
Deal found 5/13![Singapore Airlines logo]()
$873
This Ovago deal was found by Cheapflights users on 5/12. 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.
Tue 9/110:50 pm
SFO
- SAI
1 stop20h 50m
Multiple Airlines
Thu 10/19:40 am
SAI
- SFO
2 stops24h 30m
Multiple Airlines
Deal found 5/12![Multiple Airlines logo]()
$1,161
This Vietnam Airlines deal was found by Cheapflights users on 5/10. 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 Vietnam Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/2310:50 pm
SFO
- SAI
2 stops52h 20m
Vietnam Airlines
Tue 8/46:05 pm
SAI
- SFO
2 stops37h 50m
Vietnam Airlines
Deal found 5/10![Vietnam Airlines logo]()
$1,721
This Emirates deal was found by Cheapflights users on 5/12. 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.
Thu 9/175:05 pm
SFO
- SAI
2 stops29h 10m
Emirates
Tue 10/2011:50 pm
SAI
- SFO
3 stops35h 55m
Emirates
Deal found 5/12![Emirates logo]()
$1,817
This oojo deal was found by Cheapflights users on 5/12. 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 9/18:20 am
SFO
- SAI
3 stops35h 20m
Singapore Airlines
Thu 10/110:30 am
SAI
- SFO
2 stops43h 26m
Singapore Airlines
Deal found 5/12![Singapore Airlines logo]()
$1,284
This FlightHub deal was found by Cheapflights users on 5/13. 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.
Thu 7/21:00 pm
SFO
- SAI
2 stops30h 00m
Multiple Airlines
Thu 7/912:55 pm
SAI
- SFO
2 stops21h 40m
Multiple Airlines
Deal found 5/13![Multiple Airlines logo]()
$1,582
This Gotogate deal was found by Cheapflights users on 5/11. 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.
Mon 7/61:25 am
SFO
- SAI
2 stops26h 55m
Multiple Airlines
Wed 8/57:10 pm
SAI
- SFO
1 stop36h 45m
Multiple Airlines
Deal found 5/11![Multiple Airlines logo]()
$1,639
This Gotogate deal was found by Cheapflights users on 5/11. 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 7/810:50 pm
SFO
- SAI
1 stop29h 30m
Multiple Airlines
Wed 7/226:30 pm
SAI
- SFO
1 stop37h 25m
Multiple Airlines
Deal found 5/11![Multiple Airlines logo]()
$1,695
This Qatar Airways deal was found by Cheapflights users on 5/11. 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.
Fri 11/63:09 pm
SFO
- SAI
3 stops36h 36m
Multiple Airlines
Wed 11/184:00 pm
SAI
- SFO
2 stops35h 40m
Multiple Airlines
Deal found 5/11![Multiple Airlines logo]()
$1,773
This Turkish Airlines deal was found by Cheapflights users on 5/13. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/201:05 pm
SFO
- SAI
2 stops29h 55m
Multiple Airlines
Wed 7/157:35 pm
SAI
- SFO
2 stops29h 15m
Multiple Airlines
Deal found 5/13![Multiple Airlines logo]()
$1,795
Last-minute flights from San Francisco to Siem ReapDiscover last-minute flight deals from San Francisco to Siem Reap. Data last updated May 14, 2026 and is based on user searches.
Discover last-minute flight deals from San Francisco to Siem Reap. Data last updated May 14, 2026 and is based on user searches.
This FlightHub deal was found by Cheapflights users on 5/12. 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 5/1212:50 am
SFO
- SAI
2 stops27h 55m
Multiple Airlines
Wed 5/207:30 pm
SAI
- SFO
2 stops25h 15m
Multiple Airlines
Deal found 5/12![Multiple Airlines logo]()
$1,231
This oojo deal was found by Cheapflights users on 5/14. 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.
Fri 5/1512:30 pm
SFO
- SAI
2 stops30h 35m
Multiple Airlines
Mon 5/187:30 pm
SAI
- SFO
2 stops25h 15m
Multiple Airlines
Deal found 5/14![Multiple Airlines logo]()
$1,291
This oojo deal was found by Cheapflights users on 5/13. 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 5/1812:50 am
SFO
- SAI
2 stops27h 55m
Multiple Airlines
Sun 5/317:30 pm
SAI
- SFO
2 stops25h 15m
Multiple Airlines
Deal found 5/13![Multiple Airlines logo]()
$1,304
This Gotogate deal was found by Cheapflights users on 5/12. 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.
Mon 6/87:30 pm
SFO
- SAI
2 stops23h 35m
Multiple Airlines
Wed 6/107:10 pm
SAI
- SFO
1 stop36h 45m
Multiple Airlines
Deal found 5/12![Multiple Airlines logo]()
$1,567
This Mytrip deal was found by Cheapflights users on 5/12. 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.
Wed 6/101:05 am
SFO
- SAI
2 stops25h 50m
Multiple Airlines
Thu 6/187:35 pm
SAI
- SFO
2 stops31h 25m
Multiple Airlines
Deal found 5/12![Multiple Airlines logo]()
$1,749
This Turkish Airlines deal was found by Cheapflights users on 5/12. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/1112:55 pm
SFO
- SAI
2 stops30h 05m
Multiple Airlines
Sun 6/217:35 pm
SAI
- SFO
2 stops35h 05m
Multiple Airlines
Deal found 5/12![Multiple Airlines logo]()
$1,750
One-way flights from San Francisco to Siem ReapSearch for one-way flight options from San Francisco to Siem Reap. Find affordable one-way fares based on user searches. Data last updated May 14, 2026.
Search for one-way flight options from San Francisco to Siem Reap. Find affordable one-way fares based on user searches. Data last updated May 14, 2026.
This Kiwi.com deal was found by Cheapflights users on 5/11. 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.
Sun 7/1910:50 pm
SFO
- SAI
1 stop29h 30m
Vietnam Airlines
Deal found 5/11![Vietnam Airlines logo]()
$558
This Booking.com deal was found by Cheapflights users on 5/12. 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.
Wed 7/2210:50 pm
SFO
- SAI
1 stop29h 30m
Vietnam Airlines
Deal found 5/12![Vietnam Airlines logo]()
$643
This Kiwi.com deal was found by Cheapflights users on 5/12. 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 7/153:30 pm
SFO
- SAI
2 stops53h 40m
Multiple Airlines
Deal found 5/12![Multiple Airlines logo]()
$667
This Gotogate deal was found by Cheapflights users on 5/12. 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.
Sun 7/191:40 am
SFO
- SAI
2 stops27h 15m
Multiple Airlines
Deal found 5/12![Multiple Airlines logo]()
$702
This Kiwi.com deal was found by Cheapflights users on 5/12. 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.
Fri 7/103:30 pm
SFO
- SAI
3 stops53h 45m
Multiple Airlines
Deal found 5/12![Multiple Airlines logo]()
$705
This KAYAK deal was found by Cheapflights users on 5/12. 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 7/211:20 am
SFO
- SAI
2 stops27h 35m
Multiple Airlines
Deal found 5/12![Multiple Airlines logo]()
$706
This Kiwi.com deal was found by Cheapflights users on 5/12. 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.
Sun 6/283:30 pm
SFO
- SAI
2 stops51h 30m
Multiple Airlines
Deal found 5/12![Multiple Airlines logo]()
$709
This Kiwi.com deal was found by Cheapflights users on 5/12. 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.
Mon 6/293:30 pm
SFO
- SAI
2 stops36h 35m
Multiple Airlines
Deal found 5/12![Multiple Airlines logo]()
$756
This Kiwi.com deal was found by Cheapflights users on 5/12. 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 7/711:20 pm
SFO
- SAI
2 stops45h 50m
Multiple Airlines
Deal found 5/12![Multiple Airlines logo]()
$774
This KAYAK deal was found by Cheapflights users on 5/11. 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.
Sat 7/181:20 am
SFO
- SAI
2 stops27h 35m
Multiple Airlines
Deal found 5/11![Multiple Airlines logo]()
$776
Find flight deals from San Francisco to Siem Reap
Discover tips and strategies to find the most affordable flight options for your journey from San Francisco (SFO) to Siem Reap (SAI). 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 May 14, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $762 (Justfly.com) |
One-way from | $558 (Kiwi.com) |
Cheapflights Fare Finder
Customize your flight search to find flights from San Francisco to Siem Reap 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 May 14, 2026.
Use the filters below to find and compare flights from San Francisco to Siem Reap that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
San FranciscoSiem Reap
SFO - SAI
SFOSAI
San Francisco
Fri 11/6
9:40 am-3:55 pm
1 stop39h 15m
Siem Reap–Angkor Intl
Wed 11/18
10:45 am-7:50 am
1 stop36h 05m
$873
Quickest round-trip
San FranciscoSiem Reap
SFO - SAI
SFOSAI
San Francisco
Tue 9/1
10:50 pm-9:40 am
1 stop20h 50m
Siem Reap–Angkor Intl
Thu 10/1
9:40 am-8:10 pm
2 stops24h 30m
$1,161
San FranciscoSiem Reap
SFO - SAI
SFOSAI
San Francisco
Tue 9/1
8:20 am-9:40 am
3 stops35h 20m
Siem Reap–Angkor Intl
Thu 10/1
10:30 am-3:56 pm
2 stops43h 26m
$1,284
San FranciscoSiem Reap
SFO - SAI
SFOSAI
San Francisco
Thu 7/2
1:00 pm-9:00 am
2 stops30h 00m
Siem Reap–Angkor Intl
Thu 7/9
12:55 pm-8:35 pm
2 stops21h 40m
$1,582
San FranciscoSiem Reap
SFO - SAI
SFOSAI
San Francisco
Mon 7/6
1:25 am-6:20 pm
2 stops26h 55m
Siem Reap–Angkor Intl
Wed 8/5
7:10 pm-5:55 pm
1 stop36h 45m
$1,639
San FranciscoSiem Reap
SFO - SAI
SFOSAI
San Francisco
Wed 7/8
10:50 pm-6:20 pm
1 stop29h 30m
Siem Reap–Angkor Intl
Wed 7/22
6:30 pm-5:55 pm
1 stop37h 25m
$1,695
San FranciscoSiem Reap
SFO - SAI
SFOSAI
San Francisco
Thu 7/23
10:50 pm-5:10 pm
2 stops52h 20m
Siem Reap–Angkor Intl
Tue 8/4
6:05 pm-5:55 pm
2 stops37h 50m
$1,721
San FranciscoSiem Reap
SFO - SAI
SFOSAI
San Francisco
Fri 11/6
3:09 pm-6:45 pm
3 stops36h 36m
Siem Reap–Angkor Intl
Wed 11/18
4:00 pm-12:40 pm
2 stops35h 40m
$1,773
San FranciscoSiem Reap
SFO - SAI
SFOSAI
San Francisco
Sat 6/20
1:05 pm-9:00 am
2 stops29h 55m
Siem Reap–Angkor Intl
Wed 7/15
7:35 pm-10:50 am
2 stops29h 15m
$1,795
San FranciscoSiem Reap
SFO - SAI
SFOSAI
San Francisco
Thu 9/17
5:05 pm-12:15 pm
2 stops29h 10m
Siem Reap–Angkor Intl
Tue 10/20
11:50 pm-9:45 pm
3 stops35h 55m
$1,817
Showing 1-10 of 19 resultsSorted by cheapest first
Compare providers for flights from San Francisco to Siem Reap
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 Siem Reap in May.
| 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 Accuracy- | Trust Score*1 star | |
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*2 stars |
- Most accurate provider: When it comes to deals on San Francisco-Siem Reap flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on San Francisco-Siem Reap flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from San Francisco-Siem Reap flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on San Francisco-Siem Reap 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-Siem Reap 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 Siem Reap
Have a flexible travel schedule? Discover the best time to fly to Siem Reap from San Francisco with our price prediction graph.
SFO-SAI
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.
Reviews of airlines servicing Siem Reap
Get insights into the airlines that provide service to Siem Reap. 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 Siem Reap. Reviews last updated May 14, 2026.
Peruse reviews from past customers who have flown with Singapore Airlines and Vietnam Airlines from San Francisco to Siem Reap to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Comfort
8.0
Entertainment
8.0
Boarding
8.3
Food
7.8
Overall
8.2
Crew
8.6
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SYD - SIN
Comfort
8.0
Entertainment
8.0
Boarding
8.3
Food
7.8
Overall
8.2
Crew
8.6
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SYD - SIN
Comfort
8.0
Entertainment
8.0
Boarding
8.3
Food
7.8
Overall
8.2
Crew
8.6
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SYD - SIN
Related info for your journey
Find useful and relevant information for your journey from San Francisco to Siem Reap. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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San Francisco and Siem Reap flights
Browse other San Francisco and Siem Reap flight options. Last updated on May 14, 2026.
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Top 2 airlines flying from San Francisco to Siem Reap
Discover the top 2 airlines that operate flights from San Francisco to Siem Reap. 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 2,558,603 searches. Data last updated May 14, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$599 | Average$767 | FlexibilityNo cancel fee | On-time81% | |
| Cheapest$647 | Average$1,222 | FlexibilityNo cancel fee | On-time81% |