Q: E

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.

Q: E

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.

Question 1

How far ahead should I book a flight from San Francisco to Siem Reap?

Accepted Answer

Booking 25 days in advance of your planned departure date is, on average, the best time to get cheap flights from San Francisco to Siem Reap. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

Question 2

What is the cheapest day to fly from San Francisco to Siem Reap?

Accepted Answer

Travelers seeking maximum savings on their San Francisco to Siem Reap flight should consider departing on Monday mornings when fares are most often at their lowest. Saturday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

Question 3

E

Accepted Answer

In terms of precipitation, rainfall in Siem Reap ranges from 0.0 - 10.2 inches per month. September is typically the wettest month, when rainfall can reach 10.2 in. January is typically the driest time to visit Siem Reap when rainfall is around 0.0 in.

Question 4

E

Accepted Answer

If weather is an important factor for your trip to Siem Reap, use this chart to help with planning. For those seeking warmer temperatures, April is the ideal time of year to visit, when temperatures reach an average of 84.2 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 75.2 F).

Question 5

What is the cheapest day to fly round-trip from San Francisco to Siem Reap?

Accepted Answer

Flying to your destination on a Thursday can be more expensive, but this shouldn’t discourage you from finding affordable options to get to Siem Reap. Check prices with Cheapflights to find a great deal for your trip.

Question 6

How far in advance should I book a flight from San Francisco to Siem Reap?

Accepted Answer

Travelers have found it’s best to book a flight 26 days in advance to save up to 250% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 26 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from San Francisco to Siem Reap 1-2 weeks in advance for as low as $768, or $2,457 for flights within the next 24 hours.

Question 7

What is the cheapest month to fly from San Francisco to Siem Reap?

Accepted Answer

Due to multiple factors, expect to potentially pay more when booking in June. For low rates, March can be a great choice for travel to Siem Reap. Flights to Siem Reap from San Francisco in March are about $1,030 on average during March, but can be found for as low as $649.

Question 8

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

Accepted Answer

It’s optimal to fly from San Francisco to Siem Reap in the morning. By choosing this option you can save up to 34% on the cost of your flight, compared to a flight at noon.

Question 9

E

Accepted Answer

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.

Question 10

E

Accepted Answer

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.

Question 11

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

Accepted Answer

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

Question 12

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

Accepted Answer

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

Question 13

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

Accepted Answer

Yes. Cheapflights offers flight deals from San Francisco 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.

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Popular in	June
Cheapest in	March
Average price	$798

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy1 star	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*3 stars
Cheapfaremart	Price Accuracy-	Trust Score*3 stars
AranGrant	Price Accuracy3 stars	Trust Score*1 star
Flightnetwork	Price Accuracy-	Trust Score*3 stars
oojo	Price Accuracy3 stars	Trust Score*2 stars
eDreams	Price Accuracy3 stars	Trust Score*3 stars
CheapOair	Price Accuracy1 star	Trust Score*3 stars
FlightsMojo	Price Accuracy-	Trust Score*3 stars

Airline	Cheapest	Average	Flexibility	On-time
Singapore Airlines	Cheapest$649	Average$957	FlexibilityNo cancel fee	On-time81%
Vietnam Airlines	Cheapest$733	Average$922	FlexibilityNo cancel fee	On-time81%

Cheap flights from San Francisco (SFO) to Siem Reap, Cambodia (SAI)

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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.

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.

Travel insights for flights from San Francisco to Siem Reap

Get recent, data-driven insights about flights from San Francisco to Siem Reap including ideal travel times, pricing trends, and more.

How far ahead should I book a flight from San Francisco to Siem Reap?

Use this chart to determine the optimal time to book a round-trip flight from San Francisco to Siem Reap. Price data was last updated on February 14, 2025.

Rainfall in Siem Reap by month

Plan your trip to Siem Reap by taking into account the average rainfall totals by month.

Temperature in Siem Reap by month

Plan your trip to Siem Reap by taking into account the average temperature totals by month.

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.

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

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

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

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