$323+ 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 4/8. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — SAI
Mar 15 — Mar 221
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
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 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 February 13, 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 February 13, 2026.
This FlightHub deal was found by Cheapflights users on 2/11. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/2211:45 am
SFO
- SAI
1 stop31h 55m
Singapore Airlines
Tue 10/1310:30 am
SAI
- SFO
1 stop37h 20m
Singapore Airlines
Deal found 2/11![Singapore Airlines logo]()
$598
This Gurufare deal was found by Cheapflights users on 2/11. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/2211:45 am
SFO
- SAI
1 stop31h 55m
Multiple Airlines
Tue 10/1310:30 am
SAI
- SFO
2 stops36h 30m
Multiple Airlines
Deal found 2/11![Multiple Airlines logo]()
$752
This KAYAK deal was found by Cheapflights users on 2/10. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/512:00 pm
SFO
- SAI
2 stops42h 00m
China Eastern
Thu 3/1210:00 pm
SAI
- SFO
3 stops50h 00m
China Eastern
Deal found 2/10![China Eastern logo]()
$787
This Orbitz deal was found by Cheapflights users on 2/10. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/411:25 am
SFO
- SAI
2 stops30h 50m
Multiple Airlines
Fri 3/139:55 am
SAI
- SFO
2 stops26h 20m
Multiple Airlines
Deal found 2/10![Multiple Airlines logo]()
$812
This Justfly.com deal was found by Cheapflights users on 2/11. 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.
Thu 8/1311:45 am
SFO
- SAI
1 stop31h 55m
Singapore Airlines
Fri 8/214:00 pm
SAI
- SFO
1 stop31h 50m
Singapore Airlines
Deal found 2/11![Singapore Airlines logo]()
$828
This KAYAK deal was found by Cheapflights users on 2/11. 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.
Thu 4/3011:00 am
SFO
- SAI
1 stop32h 40m
Singapore Airlines
Thu 5/1410:30 am
SAI
- SFO
1 stop36h 40m
Singapore Airlines
Deal found 2/11![Singapore Airlines logo]()
$832
This Orbitz deal was found by Cheapflights users on 2/10. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/301:00 pm
SFO
- SAI
2 stops54h 00m
Multiple Airlines
Thu 5/1412:55 pm
SAI
- SFO
2 stops23h 45m
Multiple Airlines
Deal found 2/10![Multiple Airlines logo]()
$836
This Expedia deal was found by Cheapflights users on 2/12. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/229:10 pm
SFO
- SAI
1 stop29h 30m
Vietnam Airlines
Sat 11/289:30 pm
SAI
- SFO
1 stop34h 30m
Vietnam Airlines
Deal found 2/12![Vietnam Airlines logo]()
$877
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 February 13, 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 February 13, 2026.
This KAYAK deal was found by Cheapflights users on 2/10. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/512:00 pm
SFO
- SAI
2 stops42h 00m
China Eastern
Thu 3/1210:00 pm
SAI
- SFO
3 stops50h 00m
China Eastern
Deal found 2/10![China Eastern logo]()
$787
This Orbitz deal was found by Cheapflights users on 2/10. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/411:25 am
SFO
- SAI
2 stops30h 50m
Multiple Airlines
Fri 3/139:55 am
SAI
- SFO
2 stops26h 20m
Multiple Airlines
Deal found 2/10![Multiple Airlines logo]()
$812
This KAYAK deal was found by Cheapflights users on 2/11. 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.
Thu 4/3011:00 am
SFO
- SAI
1 stop32h 40m
Singapore Airlines
Thu 5/1410:30 am
SAI
- SFO
1 stop36h 40m
Singapore Airlines
Deal found 2/11![Singapore Airlines logo]()
$832
This oojo deal was found by Cheapflights users on 2/9. 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.
Thu 4/3010:50 pm
SFO
- SAI
1 stop29h 50m
Vietnam Airlines
Thu 5/145:20 pm
SAI
- SFO
3 stops62h 35m
Vietnam Airlines
Deal found 2/9![Vietnam Airlines logo]()
$951
This United Airlines deal was found by Cheapflights users on 2/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/510:35 am
SFO
- SAI
1 stop38h 20m
United Airlines
Thu 3/124:45 pm
SAI
- SFO
1 stop19h 30m
United Airlines
Deal found 2/10![United Airlines logo]()
$958
This Justfly.com deal was found by Cheapflights users on 2/10. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/111:00 am
SFO
- SAI
1 stop38h 10m
Singapore Airlines
Thu 4/3010:30 am
SAI
- SFO
1 stop36h 40m
Singapore Airlines
Deal found 2/10![Singapore Airlines logo]()
$836
This KAYAK deal was found by Cheapflights users on 2/11. 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.
Thu 4/3011:00 am
SFO
- SAI
1 stop32h 40m
Multiple Airlines
Thu 5/1410:30 am
SAI
- SFO
2 stops37h 00m
Multiple Airlines
Deal found 2/11![Multiple Airlines logo]()
$850
This United Airlines deal was found by Cheapflights users on 2/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/310:35 pm
SFO
- SAI
1 stop26h 20m
United Airlines
Thu 3/124:45 pm
SAI
- SFO
1 stop19h 30m
United Airlines
Deal found 2/10![United Airlines logo]()
$958
This KAYAK deal was found by Cheapflights users on 2/10. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/111:00 am
SFO
- SAI
1 stop38h 10m
Multiple Airlines
Thu 4/3010:30 am
SAI
- SFO
2 stops35h 10m
Multiple Airlines
Deal found 2/10![Multiple Airlines logo]()
$901
Last-minute flights from San Francisco to Siem ReapDiscover last-minute flight deals from San Francisco to Siem Reap. Data last updated February 13, 2026 and is based on user searches.
Discover last-minute flight deals from San Francisco to Siem Reap. Data last updated February 13, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 2/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/310:35 pm
SFO
- SAI
1 stop26h 20m
United Airlines
Thu 3/124:45 pm
SAI
- SFO
1 stop19h 30m
United Airlines
Deal found 2/10![United Airlines logo]()
$958
This United Airlines deal was found by Cheapflights users on 2/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/310:35 pm
SFO
- SAI
1 stop26h 20m
United Airlines
Sat 3/144:45 pm
SAI
- SFO
1 stop31h 20m
United Airlines
Deal found 2/10![United Airlines logo]()
$976
This BusinessClass deal was found by Cheapflights users on 2/10. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/312:00 pm
SFO
- SAI
2 stops29h 45m
Multiple Airlines
Thu 3/121:25 pm
SAI
- SFO
2 stops20h 15m
Multiple Airlines
Deal found 2/10![Multiple Airlines logo]()
$1,047
This BusinessClass deal was found by Cheapflights users on 2/10. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/312:00 pm
SFO
- SAI
2 stops29h 45m
Multiple Airlines
Fri 3/131:20 pm
SAI
- SFO
2 stops20h 20m
Multiple Airlines
Deal found 2/10![Multiple Airlines logo]()
$1,085
This Orbitz deal was found by Cheapflights users on 2/10. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/411:25 am
SFO
- SAI
2 stops30h 50m
Multiple Airlines
Fri 3/139:55 am
SAI
- SFO
2 stops26h 20m
Multiple Airlines
Deal found 2/10![Multiple Airlines logo]()
$812
This KAYAK deal was found by Cheapflights users on 2/10. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/512:00 pm
SFO
- SAI
2 stops42h 00m
China Eastern
Thu 3/1210:00 pm
SAI
- SFO
2 stops50h 00m
China Eastern
Deal found 2/10![China Eastern logo]()
$787
This FlightHub deal was found by Cheapflights users on 2/10. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/1212:40 am
SFO
- SAI
2 stops28h 05m
Multiple Airlines
Wed 3/189:55 am
SAI
- SFO
2 stops23h 45m
Multiple Airlines
Deal found 2/10![Multiple Airlines logo]()
$1,025
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 February 13, 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 February 13, 2026.
This Gurufare deal was found by Cheapflights users on 2/10. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/811:00 am
SFO
- SAI
1 stop32h 40m
Singapore Airlines
Deal found 2/10![Singapore Airlines logo]()
$323
This Gurufare deal was found by Cheapflights users on 2/10. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/2411:00 am
SFO
- SAI
1 stop32h 40m
Singapore Airlines
Deal found 2/10![Singapore Airlines logo]()
$341
This FlightHub deal was found by Cheapflights users on 2/10. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/1010:40 am
SFO
- SAI
1 stop39h 15m
Singapore Airlines
Deal found 2/10![Singapore Airlines logo]()
$347
This Kiwi.com deal was found by Cheapflights users on 2/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/910:50 pm
SFO
- SAI
1 stop29h 50m
Vietnam Airlines
Deal found 2/10![Vietnam Airlines logo]()
$401
This Kiwi.com deal was found by Cheapflights users on 2/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/49:40 am
SFO
- SAI
1 stop39h 15m
Singapore Airlines
Deal found 2/10![Singapore Airlines logo]()
$404
This Kiwi.com deal was found by Cheapflights users on 2/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/711:50 pm
SFO
- SAI
2 stops28h 15m
Multiple Airlines
Deal found 2/10![Multiple Airlines logo]()
$412
This Kiwi.com deal was found by Cheapflights users on 2/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/81:00 pm
SFO
- SAI
2 stops39h 05m
Multiple Airlines
Deal found 2/10![Multiple Airlines logo]()
$416
This Singapore Airlines deal was found by Cheapflights users on 2/11. 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 Singapore Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/1110:40 am
SFO
- SAI
1 stop39h 15m
Singapore Airlines
Deal found 2/11![Singapore Airlines logo]()
$421
This Gurufare deal was found by Cheapflights users on 2/10. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/611:00 am
SFO
- SAI
1 stop32h 40m
Singapore Airlines
Deal found 2/10![Singapore Airlines logo]()
$433
This Kiwi.com deal was found by Cheapflights users on 2/11. 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.
Tue 3/1011:50 pm
SFO
- SAI
2 stops52h 15m
Multiple Airlines
Deal found 2/11![Multiple Airlines logo]()
$435
This Kiwi.com deal was found by Cheapflights users on 2/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/411:50 pm
SFO
- SAI
2 stops27h 15m
Multiple Airlines
Deal found 2/10![Multiple Airlines logo]()
$437
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 February 13, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $787 (KAYAK) |
One-way from | $323 (Gurufare) |
Popular in | May |
Cheapest in | September |
Average price | $756 |
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 February 13, 2026.
Use the filters below to find and compare flights from San Francisco to Siem Reap that are best for you.
Fly from
San Francisco
Fly to
Siem Reap
Route
Depart
Return
Price
San FranciscoSiem Reap
SFO - SAI
SFOSAI
San Francisco
Thu 3/5
12:00 pm-9:00 pm
2 stops42h 00m
Siem Reap–Angkor Intl
Thu 3/12
10:00 pm-10:00 am
3 stops50h 00m
$787
San FranciscoSiem Reap
SFO - SAI
SFOSAI
San Francisco
Wed 3/4
11:25 am-9:15 am
2 stops30h 50m
Siem Reap–Angkor Intl
Fri 3/13
9:55 am-10:15 pm
2 stops26h 20m
$812
San FranciscoSiem Reap
SFO - SAI
SFOSAI
San Francisco
Thu 4/30
11:00 am-9:40 am
1 stop32h 40m
Siem Reap–Angkor Intl
Thu 5/14
10:30 am-9:10 am
1 stop36h 40m
$832
San FranciscoSiem Reap
SFO - SAI
SFOSAI
San Francisco
Wed 4/1
11:00 am-3:10 pm
1 stop38h 10m
Siem Reap–Angkor Intl
Thu 4/30
10:30 am-9:10 am
1 stop36h 40m
$836
San FranciscoSiem Reap
SFO - SAI
SFOSAI
San Francisco
Thu 4/30
11:00 am-9:40 am
1 stop32h 40m
Siem Reap–Angkor Intl
Thu 5/14
10:30 am-9:30 am
2 stops37h 00m
$850
San FranciscoSiem Reap
SFO - SAI
SFOSAI
San Francisco
Wed 4/1
11:00 am-3:10 pm
1 stop38h 10m
Siem Reap–Angkor Intl
Thu 4/30
10:30 am-7:40 am
2 stops35h 10m
$901
San FranciscoSiem Reap
SFO - SAI
SFOSAI
San Francisco
Thu 4/30
10:50 pm-6:40 pm
1 stop29h 50m
Siem Reap–Angkor Intl
Thu 5/14
5:20 pm-5:55 pm
3 stops62h 35m
$951
San FranciscoSiem Reap
SFO - SAI
SFOSAI
San Francisco
Thu 3/5
10:35 am-3:55 pm
1 stop38h 20m
Siem Reap–Angkor Intl
Thu 3/12
4:45 pm-10:15 pm
1 stop19h 30m
$958
San FranciscoSiem Reap
SFO - SAI
SFOSAI
San Francisco
Tue 3/3
10:35 pm-3:55 pm
1 stop26h 20m
Siem Reap–Angkor Intl
Thu 3/12
4:45 pm-10:15 pm
1 stop19h 30m
$958
San FranciscoSiem Reap
SFO - SAI
SFOSAI
San Francisco
Wed 4/8
11:00 am-9:40 am
1 stop32h 40m
$323
Showing 1-10 of 20 results
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 February.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 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 Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 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 February 13, 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.
Boarding
8.3
Comfort
8.0
Entertainment
8.0
Food
7.8
Overall
8.2
Crew
8.6
Reviews
1 / 20
2.0
MediocreKetan,Nov 2024
SIN - AMD
Boarding
8.3
Comfort
8.0
Entertainment
8.0
Food
7.8
Overall
8.2
Crew
8.6
Reviews
1 / 20
2.0
MediocreKetan,Nov 2024
SIN - AMD
Boarding
8.3
Comfort
8.0
Entertainment
8.0
Food
7.8
Overall
8.2
Crew
8.6
Reviews
1 / 20
2.0
MediocreKetan,Nov 2024
SIN - AMD
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.
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 Siem Reap by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from San Francisco to Siem Reap by cabin class
Find flights from San Francisco to Siem Reap, based on your preferred cabin class, be it economy, premium economy, business, or first class.
San Francisco and Siem Reap flights
Browse other San Francisco and Siem Reap flight options. Last updated on February 13, 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 February 13, 2026.
Popular flight searches
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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 February 13, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$628 | Average$761 | FlexibilityNo cancel fee | On-time81% | |
| Cheapest$789 | Average$1,218 | FlexibilityNo cancel fee | On-time81% |