$369+ Cheap flights from San Francisco (SFO) to Siem Reap, Cambodia (SAI)
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 2/19. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — SAI
Dec 14 — Dec 211
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
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
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Best
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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 November 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 November 14, 2026.
This Kiwi.com deal was found by Cheapflights users on 11/12. 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 12/63:20 pm -
2 stops34h 35m
Wed 12/239:30 pm -
1 stop34h 30m
Deal found 11/12![Multiple Airlines logo]()
$1,082
This Kiwi.com deal was found by Cheapflights users on 11/11. 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.
Sat 12/53:20 pm -
2 stops35h 45m
Tue 12/229:30 pm -
1 stop34h 30m
Deal found 11/11![Multiple Airlines logo]()
$1,087
This SmartFares deal was found by Cheapflights users on 11/9. 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.
Tue 12/811:25 am -
2 stops30h 50m
Tue 12/229:55 am -
2 stops26h 20m
Deal found 11/9![Multiple Airlines logo]()
$1,089
This Kiwi.com deal was found by Cheapflights users on 11/11. 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 12/63:20 pm -
2 stops34h 35m
Tue 12/229:30 pm -
1 stop34h 30m
Deal found 11/11![Multiple Airlines logo]()
$1,101
This KAYAK deal was found by Cheapflights users on 11/13. 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.
Fri 11/2710:40 am -
1 stop38h 20m
Tue 12/2210:45 am -
1 stop25h 30m
Deal found 11/13![Singapore Airlines logo]()
$1,137
This KAYAK deal was found by Cheapflights users on 11/14. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/2711:45 am -
2 stops30h 30m
Tue 12/2210:45 am -
1 stop25h 30m
Deal found 11/14![Multiple Airlines logo]()
$1,144
This Trip.com deal was found by Cheapflights users on 11/11. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/69:10 pm -
1 stop29h 30m
Tue 12/229:30 pm -
1 stop34h 30m
Deal found 11/11![Vietnam Airlines logo]()
$1,154
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 November 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 November 14, 2026.
This FlightHub deal was found by Cheapflights users on 11/9. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/1311:30 pm -
3 stops25h 40m
Wed 2/171:20 pm -
2 stops20h 20m
Deal found 11/9![Multiple Airlines logo]()
$1,302
This FlightHub deal was found by Cheapflights users on 11/9. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/136:00 am -
3 stops43h 00m
Wed 2/1710:45 am -
3 stops51h 04m
Deal found 11/9![Singapore Airlines logo]()
$1,518
This Vietnam Airlines deal was found by Cheapflights users on 11/9. 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 Vietnam Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/99:10 pm -
3 stops52h 00m
Wed 12/236:40 pm -
1 stop37h 20m
Deal found 11/9![Vietnam Airlines logo]()
$1,550
This KAYAK deal was found by Cheapflights users on 11/9. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/810:25 am -
3 stops43h 45m
Tue 12/2211:50 pm -
3 stops38h 13m
Deal found 11/9![Emirates logo]()
$2,677
This United Airlines deal was found by Cheapflights users on 11/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/1010:40 pm -
1 stop26h 20m
Mon 1/1810:45 am -
2 stops37h 45m
Deal found 11/11![United Airlines logo]()
$2,815
This Vietnam Airlines deal was found by Cheapflights users on 11/9. 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 Vietnam Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/99:10 pm -
3 stops52h 00m
Tue 12/229:30 pm -
1 stop34h 30m
Deal found 11/9![Vietnam Airlines logo]()
$1,550
This Vietnam Airlines deal was found by Cheapflights users on 11/11. 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 Vietnam Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/99:10 pm -
3 stops52h 00m
Tue 1/198:30 pm -
2 stops35h 30m
Deal found 11/11![Vietnam Airlines logo]()
$1,807
This Qatar Airways deal was found by Cheapflights users on 11/12. 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 Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/276:23 am -
3 stops35h 52m
Tue 12/229:30 pm -
2 stops55h 00m
Deal found 11/12![Multiple Airlines logo]()
$1,991
This Vietnam Airlines deal was found by Cheapflights users on 11/11. 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 Vietnam Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/239:10 pm -
1 stop29h 30m
Mon 1/45:55 pm -
2 stops62h 05m
Deal found 11/11![Vietnam Airlines logo]()
$2,943
Last-minute flights from San Francisco to Siem ReapDiscover last-minute flight deals from San Francisco to Siem Reap. Data last updated November 14, 2026 and is based on user searches.
Discover last-minute flight deals from San Francisco to Siem Reap. Data last updated November 14, 2026 and is based on user searches.
This KAYAK deal was found by Cheapflights users on 11/13. 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.
Fri 11/2710:40 am -
1 stop38h 20m
Tue 12/2210:45 am -
1 stop25h 30m
Deal found 11/13![Singapore Airlines logo]()
$1,137
This KAYAK deal was found by Cheapflights users on 11/14. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/2711:45 am -
2 stops30h 30m
Tue 12/2210:45 am -
1 stop25h 30m
Deal found 11/14![Multiple Airlines logo]()
$1,144
This Kiwi.com deal was found by Cheapflights users on 11/11. 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.
Sat 12/53:20 pm -
2 stops35h 45m
Tue 12/229:30 pm -
1 stop34h 30m
Deal found 11/11![Multiple Airlines logo]()
$1,087
This Kiwi.com deal was found by Cheapflights users on 11/12. 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 12/63:20 pm -
2 stops34h 35m
Wed 12/239:30 pm -
1 stop34h 30m
Deal found 11/12![Multiple Airlines logo]()
$1,082
This Kiwi.com deal was found by Cheapflights users on 11/11. 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 12/63:20 pm -
2 stops34h 35m
Tue 12/229:30 pm -
1 stop34h 30m
Deal found 11/11![Multiple Airlines logo]()
$1,101
This Trip.com deal was found by Cheapflights users on 11/11. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/69:10 pm -
1 stop29h 30m
Tue 12/229:30 pm -
1 stop34h 30m
Deal found 11/11![Vietnam Airlines logo]()
$1,154
This SmartFares deal was found by Cheapflights users on 11/9. 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.
Tue 12/811:25 am -
2 stops30h 50m
Tue 12/229:55 am -
2 stops26h 20m
Deal found 11/9![Multiple Airlines logo]()
$1,089
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 November 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 November 14, 2026.
This KAYAK deal was found by Cheapflights users on 11/9. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/199:40 am -
1 stop39h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/9![Singapore Airlines logo]()
$369
This oojo deal was found by Cheapflights users on 11/12. 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.
Fri 3/1910:40 am -
1 stop33h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/12![Singapore Airlines logo]()
$372
This FlightHub deal was found by Cheapflights users on 11/13. 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.
Sun 2/219:40 am -
1 stop39h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/13![Singapore Airlines logo]()
$380
This FlightHub deal was found by Cheapflights users on 11/11. 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.
Wed 1/209:40 am -
1 stop39h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/11![Singapore Airlines logo]()
$401
This FlightHub deal was found by Cheapflights users on 11/13. 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.
Mon 2/229:40 am -
1 stop33h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/13![Singapore Airlines logo]()
$403
This Kiwi.com deal was found by Cheapflights users on 11/11. 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.
Wed 1/203:20 pm -
2 stops53h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/11![Multiple Airlines logo]()
$444
This Kiwi.com deal was found by Cheapflights users on 11/11. 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 1/103:20 pm -
2 stops50h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/11![Multiple Airlines logo]()
$457
This Kiwi.com deal was found by Cheapflights users on 11/11. 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 1/173:20 pm -
2 stops50h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/11![Multiple Airlines logo]()
$462
This oojo deal was found by Cheapflights users on 11/13. 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.
Sun 2/149:10 pm -
1 stop32h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/13![Vietnam Airlines logo]()
$463
This Vietnam Airlines deal was found by Cheapflights users on 11/9. 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 Vietnam Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 1/39:10 pm -
1 stop29h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/9![Vietnam Airlines logo]()
$473
This Kiwi.com deal was found by Cheapflights users on 11/11. 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.
Sat 1/163:20 pm -
2 stops58h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/11![Multiple Airlines logo]()
$477
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 November 14, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $708 (Justfly.com) |
One-way from | $369 (KAYAK) |
Popular in | December |
Cheapest in | September |
Average price | $979 |
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 7,457,451 searches. Data last updated November 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 San Francisco - SAI Siem Reap–Angkor Intl
SFOSAI
San Francisco
Fri 2/19
9:40 am-4:00 pm
1 stop39h 20m
Siem Reap–Angkor Intl
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$380
San FranciscoSiem Reap
SFO San Francisco - SAI Siem Reap–Angkor Intl
SFOSAI
San Francisco
Sun 1/3
9:10 pm-5:40 pm
1 stop29h 30m
Siem Reap–Angkor Intl
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$473
San FranciscoSiem Reap
SFO San Francisco - SAI Siem Reap–Angkor Intl
SFOSAI
San Francisco
Wed 1/13
5:36 pm-11:45 am
3 stops51h 09m
Siem Reap–Angkor Intl
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$545
San FranciscoSiem Reap
SFO San Francisco - SAI Siem Reap–Angkor Intl
SFOSAI
San Francisco
Mon 1/4
12:00 pm-8:05 pm
2 stops65h 05m
Siem Reap–Angkor Intl
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$548
San FranciscoSiem Reap
SFO San Francisco - SAI Siem Reap–Angkor Intl
SFOSAI
San Francisco
Tue 1/19
6:07 pm-8:30 pm
3 stops35h 23m
Siem Reap–Angkor Intl
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$548
San FranciscoSiem Reap
SFO San Francisco - SAI Siem Reap–Angkor Intl
SFOSAI
San Francisco
Fri 3/19
10:40 am-6:10 pm
3 stops41h 30m
Siem Reap–Angkor Intl
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$570
San FranciscoSiem Reap
SFO San Francisco - SAI Siem Reap–Angkor Intl
SFOSAI
San Francisco
Mon 11/23
11:45 am-9:15 am
2 stops30h 30m
Siem Reap–Angkor Intl
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$601
San FranciscoSiem Reap
SFO San Francisco - SAI Siem Reap–Angkor Intl
SFOSAI
San Francisco
Tue 1/12
10:40 pm-8:25 pm
2 stops30h 45m
Siem Reap–Angkor Intl
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$612
San FranciscoSiem Reap
SFO San Francisco - SAI Siem Reap–Angkor Intl
SFOSAI
San Francisco
Sat 1/2
12:00 pm-8:05 pm
2 stops65h 05m
Siem Reap–Angkor Intl
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$623
Quickest round-trip
San FranciscoSiem Reap
SFO San Francisco - SAI Siem Reap–Angkor Intl
SFOSAI
San Francisco
Sun 2/14
9:10 pm-4:55 pm
2 stops28h 45m
Siem Reap–Angkor Intl
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$650
Showing 1-10 of 21 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 November.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy2 stars | 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 | |
| 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.
Cheapflights Insights
Everything you need to know about your flight from San Francisco to Siem Reap
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 November 14, 2026.
Peruse reviews from past customers who have flown with Singapore 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.
Crew
8.6
Comfort
8.0
Boarding
8.3
Entertainment
8.0
Food
7.8
Overall
8.2
Reviews
1 / 20
10.0
ExcellentJudith,Sep 2026
SFO - SIN
Crew
8.6
Comfort
8.0
Boarding
8.3
Entertainment
8.0
Food
7.8
Overall
8.2
Reviews
1 / 20
10.0
ExcellentJudith,Sep 2026
SFO - 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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Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
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Complete your trip
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Popular flights
Alternative routes for San Francisco to Siem Reap
See prices for flight routes from nearby airports that may be better suited for you.
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 November 14, 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 November 14, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top airline flying from San Francisco to Siem Reap
Discover the top airline 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 7,457,451 searches. Data last updated November 14, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$599 | Average$944 | FlexibilityNo cancel fee | On-time81% |