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Siem Reap

$343+ Cheap flights from California to Siem Reap

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 5/6. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — SAI
Feb 28 — Mar 71
Sat 2/28
Sat 3/7
1 adult, Economy
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Cheap flight deals from California to Siem Reap

Cheapest flights from California to Siem Reap
Explore the most affordable flight options available from California to Siem Reap. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 29, 2026.

This FlightHub deal was found by Cheapflights users on 1/29. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/2611:00 am
SFO
-
SAI
1 stop32h 40m
Singapore Airlines
Thu 5/710:30 am
SAI
-
SFO
1 stop36h 40m
Singapore Airlines
Deal found 1/29$598
This oojo deal was found by Cheapflights users on 1/28. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/152:20 pm
LAX
-
SAI
2 stops29h 20m
Singapore Airlines
Sat 9/2610:30 am
SAI
-
LAX
1 stop25h 20m
Singapore Airlines
Deal found 1/28$650
This oojo deal was found by Cheapflights users on 1/28. 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 oojo 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 1/28$653
This KAYAK deal was found by Cheapflights users on 1/27. 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 4/612:00 pm
SFO
-
SAI
2 stops42h 10m
China Eastern
Wed 4/159:10 pm
SAI
-
SFO
2 stops25h 55m
China Eastern
Deal found 1/27$737
This Gurufare deal was found by Cheapflights users on 1/27. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/210:50 pm
SFO
-
SAI
1 stop29h 50m
Vietnam Airlines
Tue 4/147:40 pm
SAI
-
SFO
1 stop36h 15m
Vietnam Airlines
Deal found 1/27$796
This Vietnam Airlines deal was found by Cheapflights users on 1/27. 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 Vietnam Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/110:50 pm
SFO
-
SAI
1 stop29h 50m
Vietnam Airlines
Wed 4/157:40 pm
SAI
-
SFO
1 stop36h 15m
Vietnam Airlines
Deal found 1/27$797
This Kiwi.com deal was found by Cheapflights users on 1/28. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/210:50 pm
SFO
-
SAI
1 stop29h 50m
Vietnam Airlines
Fri 4/177:40 pm
SAI
-
SFO
1 stop36h 15m
Vietnam Airlines
Deal found 1/28$809
This FlightHub deal was found by Cheapflights users on 1/28. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/412:00 pm
SFO
-
SAI
2 stops42h 10m
China Eastern
Fri 4/179:10 pm
SAI
-
SFO
2 stops25h 55m
China Eastern
Deal found 1/28$831
This Gurufare deal was found by Cheapflights users on 1/27. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/410:50 pm
SFO
-
SAI
1 stop29h 50m
Vietnam Airlines
Tue 4/147:40 pm
SAI
-
SFO
1 stop36h 15m
Vietnam Airlines
Deal found 1/27$836
This Vietnam Airlines deal was found by Cheapflights users on 1/28. 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 Vietnam Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/510:50 pm
SFO
-
SAI
1 stop29h 50m
Vietnam Airlines
Tue 4/217:40 pm
SAI
-
SFO
1 stop36h 15m
Vietnam Airlines
Deal found 1/28$837
This Mytrip deal was found by Cheapflights users on 1/28. 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.
Thu 3/511:30 am
LAX
-
SAI
2 stops42h 30m
Multiple Airlines
Thu 3/129:40 pm
SAI
-
LAX
2 stops26h 25m
Multiple Airlines
Deal found 1/28$841
This oojo deal was found by Cheapflights users on 1/28. 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 oojo 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
2 stops37h 00m
Singapore Airlines
Deal found 1/28$848

Find flight deals from California to Siem Reap

Keep the following information in mind while searching for California to Siem Reap flight deals. Data was last updated January 29, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$598
(FlightHub)

One-way from

$343
(FlightHub)

Popular in

July

Cheapest in

August

Average price

$957
Provider with most accurate pricing for Los Angeles-Siem Reap–Angkor Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Los Angeles-Siem Reap–Angkor Intl flights.
Search Deals
From California to Siem Reap
Search Deals
One-way flight from California to Siem Reap
Search Deals
Highest demand for flights based on searches. 8% potential increase in price ($98 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($26 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from California 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 January 29, 2026.
Use the filters below to find and compare flights from California to Siem Reap that are best for you.

Fly from

California

Fly to

Siem Reap

Route

Depart

Return

Price

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

$598

San FranciscoSiem Reap

SFO - SAI

SFOSAI

San Francisco

Thu 4/2

10:50 pm-6:40 pm

1 stop29h 50m

Siem Reap–Angkor Intl

Tue 4/14

7:40 pm-5:55 pm

1 stop36h 15m

$796

San FranciscoSiem Reap

SFO - SAI

SFOSAI

San Francisco

Thu 4/2

10:50 pm-6:40 pm

1 stop29h 50m

Siem Reap–Angkor Intl

Wed 4/15

7:40 pm-5:55 pm

1 stop36h 15m

$797

San FranciscoSiem Reap

SFO - SAI

SFOSAI

San Francisco

Mon 4/6

12:00 pm-8:10 pm

2 stops42h 10m

Siem Reap–Angkor Intl

Fri 4/17

9:10 pm-9:05 am

2 stops25h 55m

$837

San FranciscoSiem Reap

SFO - SAI

SFOSAI

San Francisco

Sat 4/4

10:50 pm-6:40 pm

1 stop29h 50m

Siem Reap–Angkor Intl

Wed 4/15

7:40 pm-5:55 pm

1 stop36h 15m

$837

San FranciscoSiem Reap

SFO - SAI

SFOSAI

San Francisco

Sun 4/5

10:50 pm-6:40 pm

1 stop29h 50m

Siem Reap–Angkor Intl

Tue 4/14

7:40 pm-5:55 pm

1 stop36h 15m

$837

San FranciscoSiem Reap

SFO - SAI

SFOSAI

San Francisco

Wed 4/1

10:50 pm-6:40 pm

1 stop29h 50m

Siem Reap–Angkor Intl

Fri 4/17

7:40 pm-5:55 pm

1 stop36h 15m

$837

San FranciscoSiem Reap

SFO - SAI

SFOSAI

San Francisco

Sat 4/4

10:50 pm-6:40 pm

1 stop29h 50m

Siem Reap–Angkor Intl

Tue 4/21

7:40 pm-5:55 pm

1 stop36h 15m

$837

San FranciscoSiem Reap

SFO - SAI

SFOSAI

San Francisco

Wed 4/1

10:50 pm-6:40 pm

1 stop29h 50m

Siem Reap–Angkor Intl

Sat 4/18

7:40 pm-5:55 pm

1 stop36h 15m

$837

San FranciscoSiem Reap

SFO - SAI

SFOSAI

San Francisco

Sun 4/5

10:50 pm-6:40 pm

1 stop29h 50m

Siem Reap–Angkor Intl

Wed 4/15

7:40 pm-5:55 pm

1 stop36h 15m

$837

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/28

Showing 1-10 of 51 results
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Best time to book a flight from California to Siem Reap

Have a flexible travel schedule? Discover the best time to fly to Siem Reap from California with our price prediction graph.
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 California to Siem Reap

What is the cheapest month to book a flight from California to Region of Siem Reap?

Currently, January is the cheapest month in which you can book a flight from California to Region of Siem Reap (average of $596). Flying from California to Region of Siem Reap in July is currently the most expensive (average of $1,156). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

How much does it cost to fly round-trip from California to Region of 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 January 29, 2026.
Read through reviews of airlines operating flights from California to Siem Reap, such as Singapore Airlines and Vietnam Airlines. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Singapore Airlines
8.2
Very good
1,440 reviews

Boarding

8.3

Entertainment

8.0

Comfort

8.0

Food

7.8

Crew

8.6

Overall

8.2

Reviews

1 / 20
10.0
Excellent

Wee Keng,Dec 2025

HKG - SIN

Quick 3 hour flight with excellent service from the crew despite it being Christmas Day holiday. Ground crew passed out Xmas cookies as well. Great experience.
Singapore Airlines
8.2
Very good
1,440 reviews
Singapore Airlines
8.2
Very good
1,440 reviews

Boarding

8.3

Entertainment

8.0

Comfort

8.0

Food

7.8

Crew

8.6

Overall

8.2

Reviews

1 / 20
10.0
Excellent

Wee Keng,Dec 2025

HKG - SIN

Quick 3 hour flight with excellent service from the crew despite it being Christmas Day holiday. Ground crew passed out Xmas cookies as well. Great experience.
Vietnam Airlines
7.6
Good
224 reviews
Singapore Airlines
8.2
Very good
1,440 reviews

Boarding

8.3

Entertainment

8.0

Comfort

8.0

Food

7.8

Crew

8.6

Overall

8.2

Reviews

1 / 20
10.0
Excellent

Wee Keng,Dec 2025

HKG - SIN

Quick 3 hour flight with excellent service from the crew despite it being Christmas Day holiday. Ground crew passed out Xmas cookies as well. Great experience.

Related info for your journey

Find useful and relevant information for your journey from California to Siem Reap. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from California to Region of Siem Reap?

    Departing from California to Region of Siem Reap will take you 29h 50m. Airlines will cover a distance of 7791 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines to fly from California to Region of Siem Reap one-way?

    For one-way options, check prices for Vietnam Airlines. According to our data, you can fly for as low as $331. Users have also found prices from $332 and $512 on Singapore Airlines and United Airlines, respectively.

  • Can I find deals for flights from California to Siem Reap that include hotel bookings?

    Yes. In addition to deals on California to Siem Reap flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from California to Siem Reap?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from California to Siem Reap.

  • Can I find deals for business class flights from California to Siem Reap?

    Yes. Cheapflights offers flight deals from California to Siem Reap by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from California to Region of Siem Reap?

    Currently, January is the cheapest month in which you can book a flight from California to Region of Siem Reap (average of $596). Flying from California to Region of Siem Reap in July is currently the most expensive (average of $1,156). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for California to Siem Reap

See prices for flight routes from nearby airports that may be better suited for you.
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Top 2 airlines flying from California to Siem Reap

Discover the top 2 airlines that operate flights from California 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 January 29, 2026.
AirlineCheapestAverageFlexibilityOn-time
Singapore AirlinesCheapest$628Average$870FlexibilityNo cancel feeOn-time81%
Vietnam AirlinesCheapest$770Average$1,129FlexibilityNo cancel feeOn-time81%

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