In terms of precipitation, rainfall in San Francisco ranges from 0.0 - 4.4 inches per month. January is typically the wettest month, when rainfall can reach 4.4 in. July is typically the driest time to visit San Francisco when rainfall is around 0.0 in.

If weather is an important factor for your trip to San Francisco, use this chart to help with planning. For those seeking warmer temperatures, September is the ideal time of year to visit, when temperatures reach an average of 62.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 51.8 F).

What is the cheapest time of day to fly from SAI to SFO?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Siem Reap to San Francisco as you normally would.

Most accurate provider : When it comes to deals on Siem Reap-San Francisco flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Siem Reap-San Francisco flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Siem Reap-San Francisco flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on Siem Reap-San Francisco 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 Siem Reap-San Francisco flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Can I find deals for flights from Siem Reap to San Francisco that include hotel bookings?

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

How can I find direct flights from Siem Reap to San Francisco?

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

Can I find deals for business class flights from Siem Reap to San Francisco?

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

$2,611+ Flights from Siem Reap, Cambodia to San Francisco

Home Search by date Vacation packages Hotels Flight deals Car rental Travel tips & news

Find cheap flights from Siem Reap to San Francisco 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 Siem Reap to San Francisco

One-way flights from Siem Reap to San Francisco
Search for one-way flight options from Siem Reap to San Francisco. Find affordable one-way fares based on user searches. Data last updated January 29, 2026.

Wed 4/17:05 pm

SAI

SFO

3 stops38h 50m

Multiple Airlines

Deal found 1/28

$2,611

Find flight deals from Siem Reap to San Francisco

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars

Provider with most accurate pricing for Siem Reap–Angkor Intl-San Francisco flight deals.

Search Deals

Provider most trusted by Cheapflights users for Siem Reap–Angkor Intl-San Francisco flights.

Search Deals

Cheapflights Fare Finder

Use the filters below to find and compare flights from Siem Reap to San Francisco that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Siem ReapSan Francisco

SAI - SFO

SAISFO

Siem Reap–Angkor Intl

Wed 4/1

7:05 pm-7:55 pm

3 stops38h 50m

$2,611

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/28

Compare providers for flights from Siem Reap to San Francisco

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Siem Reap to San Francisco in January.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy1 star	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

Most accurate provider: When it comes to deals on Siem Reap-San Francisco flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Siem Reap-San Francisco flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Siem Reap-San Francisco flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on Siem Reap-San Francisco 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 Siem Reap-San Francisco 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 Siem Reap to San Francisco

Have a flexible travel schedule? Discover the best time to fly to San Francisco from Siem Reap 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.

Related info for your journey

Can I find deals for flights from Siem Reap to San Francisco that include hotel bookings?
Yes. In addition to deals on Siem Reap to San Francisco flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Siem Reap to San Francisco?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Siem Reap to San Francisco.
Can I find deals for business class flights from Siem Reap to San Francisco?
Yes. Cheapflights offers flight deals from Siem Reap to San Francisco by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

South San Francisco

Santa Cruz

Roseville

Santa Clara

Livermore

Watsonville

San Bruno

Daly City

Sunnyvale

Turlock

Vacaville

San Carlos

San Ramon

Manteca

Vallejo

San Lorenzo

Davis

Hollister

Redwood City

Union City

Browse thousands of different options on Cheapflights for your next trip

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

$2,611+ Cheap flights from Siem Reap, Cambodia (SAI) to San Francisco (SFO)

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 4/1. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Siem Reap to San Francisco with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Siem Reap to San Francisco

One-way flights from Siem Reap to San FranciscoSearch for one-way flight options from Siem Reap to San Francisco. Find affordable one-way fares based on user searches. Data last updated January 29, 2026.

Search for one-way flight options from Siem Reap to San Francisco. Find affordable one-way fares based on user searches. Data last updated January 29, 2026.

Find flight deals from Siem Reap to San Francisco

Most accurate provider

Most trusted provider