HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Siem Reap

Cheap flights from San Francisco (SFO) to Siem Reap

SFO — SAI
Jan 7 — Jan 141
Wed 1/7
Wed 1/14
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

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.

Find flight deals from San Francisco to Siem Reap

Keep the following information in mind while searching for San Francisco to Siem Reap flight deals. Data was last updated December 8, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Popular in

May

Cheapest in

April

Average price

$1,704
Provider with most accurate pricing for San Francisco-Siem Reap–Angkor Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for San Francisco-Siem Reap–Angkor Intl flights.
Search Deals
Highest demand for flights based on searches. 52% potential increase in price ($1,889 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 50% potential price decrease ($560 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search 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 December 8, 2025.
See what other customers who have flown with Singapore Airlines and Vietnam Airlines from San Francisco to Siem Reap have to say. 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
8.1
Very good
1,411 reviews

Comfort

8.0

Overall

8.1

Crew

8.6

Boarding

8.3

Entertainment

8.0

Food

7.8

Reviews

1 / 20
6.0
Good

Gina,Dec 2024

BLR - SIN

Overall the experience was good. First flight of 17 hours had no entertainment since Singapore airline has technical issues. Was informed that passengers would get a $350 voucher for future flight. Uncertain how that is being distributed but would like to understand if an email is required from my end or if it is an automatic email sent to me by Singapore Airlines. -Gina Robles
Singapore Airlines
8.1
Very good
1,411 reviews
Singapore Airlines
8.1
Very good
1,411 reviews

Comfort

8.0

Overall

8.1

Crew

8.6

Boarding

8.3

Entertainment

8.0

Food

7.8

Reviews

1 / 20
6.0
Good

Gina,Dec 2024

BLR - SIN

Overall the experience was good. First flight of 17 hours had no entertainment since Singapore airline has technical issues. Was informed that passengers would get a $350 voucher for future flight. Uncertain how that is being distributed but would like to understand if an email is required from my end or if it is an automatic email sent to me by Singapore Airlines. -Gina Robles
Vietnam Airlines
7.6
Good
216 reviews
Singapore Airlines
8.1
Very good
1,411 reviews

Comfort

8.0

Overall

8.1

Crew

8.6

Boarding

8.3

Entertainment

8.0

Food

7.8

Reviews

1 / 20
6.0
Good

Gina,Dec 2024

BLR - SIN

Overall the experience was good. First flight of 17 hours had no entertainment since Singapore airline has technical issues. Was informed that passengers would get a $350 voucher for future flight. Uncertain how that is being distributed but would like to understand if an email is required from my end or if it is an automatic email sent to me by Singapore Airlines. -Gina Robles

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.

  • What airport do you fly from for flights from San Francisco to Siem Reap?

    Most people fly from San Francisco (SFO) if they book a flight from San Francisco to Siem Reap. San Francisco is conveniently located just 11.8 mi from San Francisco’s city center.

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

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

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

    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.

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

    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.

See more FAQs

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.

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 December 8, 2025.
AirlineCheapestAverageFlexibilityOn-time
Singapore AirlinesCheapest$628Average$772FlexibilityNo cancel feeOn-time81%
Vietnam AirlinesCheapest$770Average$1,129FlexibilityNo cancel feeOn-time81%

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.