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Siem Reap

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

SFO — SAI
Oct 17 — Oct 241
Fri 10/17
Fri 10/24
1 adult, Economy
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Cheap 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 September 17, 2025.

Popular in

May

Cheapest in

April

Average price

$772
Highest demand for flights based on searches. 54% potential increase in price ($1,938 potential increase over avg. RT price).
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Cheapest flight prices on average. 53% potential price decrease ($565 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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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.
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.

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 September 17, 2025.
Peruse reviews from past customers who have flown with Singapore Airlines and Vietnam 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.
Singapore Airlines
8.1
Very good
1,367 reviews

Boarding

8.2

Comfort

8.0

Crew

8.6

Entertainment

8.0

Food

7.7

Overall

8.1

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
1,367 reviews
Singapore Airlines
8.1
Very good
1,367 reviews

Boarding

8.2

Comfort

8.0

Crew

8.6

Entertainment

8.0

Food

7.7

Overall

8.1

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
201 reviews
Singapore Airlines
8.1
Very good
1,367 reviews

Boarding

8.2

Comfort

8.0

Crew

8.6

Entertainment

8.0

Food

7.7

Overall

8.1

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 are the cheapest airlines flying from San Francisco to Siem Reap round-trip?

    Flying on Singapore Airlines is currently your cheapest option to Siem Reap, with prices starting at $628. Another option worth looking into is Vietnam Airlines, starting at $756 round trip. These flights start at 61% lower than the current average price 3 months from now.

  • 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.

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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 September 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
Singapore AirlinesCheapest$628Average$747FlexibilityNo cancel feeOn-time81%
Vietnam AirlinesCheapest$756Average$1,022FlexibilityNo cancel feeOn-time81%

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