How long is the flight from Siem Reap to San Francisco?

There are many flights that can get you from Siem Reap to San Francisco in 34h 30m. Fly via Vietnam Airlines or China Eastern to get the fastest option. The distance from Siem Reap to San Francisco is about 7791 mi. This flight may include one or multiple stops.

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.

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.

$509+ Cheap Flights from Siem Reap, Cambodia to San Francisco

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Cheap flight deals from Siem Reap to San Francisco

Cheapest

Best

Last-minute

One-way

Cheapest flights from Siem Reap to San Francisco
Explore the most affordable flight options available from Siem Reap to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 30, 2026.

Sat 11/219:30 pm -

1 stop34h 30m

Sat 11/289:10 pm -

1 stop32h 20m

Deal found 10/27

$967

Sat 11/219:30 pm -

1 stop34h 30m

Sat 11/2810:55 pm -

2 stops28h 35m

Deal found 10/27

$1,071

Fri 12/189:30 pm -

1 stop34h 30m

Mon 12/2812:00 pm -

2 stops65h 05m

Deal found 10/27

$1,108

Sat 11/219:05 pm -

3 stops50h 55m

Sat 11/2812:00 pm -

3 stops65h 05m

Deal found 10/27

$1,230

Best flights from Siem Reap to San Francisco
Discover carefully curated flight deals from Siem Reap to San Francisco that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 30, 2026.

Sat 11/219:30 pm -

1 stop34h 30m

Sat 11/289:10 pm -

1 stop32h 20m

Deal found 10/27

$967

Sat 11/217:25 pm -

2 stops26h 15m

Sat 11/2811:50 pm -

2 stops27h 40m

Deal found 10/27

$1,108

Sat 11/219:05 pm -

3 stops50h 55m

Sat 11/2812:00 pm -

3 stops65h 05m

Deal found 10/27

$1,230

Fri 12/189:30 pm -

2 stops32h 30m

Mon 12/2812:00 pm -

2 stops61h 55m

Deal found 10/30

$1,236

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 October 30, 2026.

Mon 12/76:50 pm -

3 stops40h 18m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 10/26

$509

Tue 12/87:05 pm -

2 stops33h 15m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 10/26

$531

Tue 12/86:50 pm -

1 stop37h 10m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 10/26

$567

Fri 3/59:30 pm -

1 stop34h 30m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 10/28

$578

Sun 3/2110:20 am -

1 stop21h 40m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 10/28

$588

Fri 2/129:55 am -

2 stops24h 15m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 10/29

$607

Sun 3/219:55 am -

2 stops24h 15m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 10/28

$618

Sun 11/229:30 pm -

2 stops24h 10m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 10/29

$622

Mon 1/189:05 am -

2 stops24h 40m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 10/25

$627

Find flight deals from Siem Reap to San Francisco

Round-trip from	$967 (Vietnam Airlines)
One-way from	$509 (Kiwi.com)

From Siem Reap–Angkor Intl to San Francisco

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One-way flight from Siem Reap–Angkor Intl to San Francisco

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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

Cheapest round-trip

Quickest round-trip

Siem ReapSan Francisco

SAI Siem Reap–Angkor Intl - SFO San Francisco

SAISFO

Siem Reap–Angkor Intl

Fri 3/5

6:40 pm-5:00 pm

1 stop37h 20m

San Francisco

Wed 12/31

12:00 am-3:00 pm

Nonstop0h 00m

$578

Siem ReapSan Francisco

SAI Siem Reap–Angkor Intl - SFO San Francisco

SAISFO

Siem Reap–Angkor Intl

Sat 11/21

9:30 pm-5:00 pm

1 stop34h 30m

San Francisco

Sat 11/28

9:10 pm-8:30 pm

1 stop32h 20m

$967

Siem ReapSan Francisco

SAI Siem Reap–Angkor Intl - SFO San Francisco

SAISFO

Siem Reap–Angkor Intl

Sat 11/28

8:30 pm-1:30 pm

2 stops56h 00m

San Francisco

Wed 12/31

12:00 am-3:00 pm

Nonstop0h 00m

$1,025

Siem ReapSan Francisco

SAI Siem Reap–Angkor Intl - SFO San Francisco

SAISFO

Siem Reap–Angkor Intl

Sun 11/29

7:25 pm-12:40 pm

2 stops56h 15m

San Francisco

Wed 12/31

12:00 am-3:00 pm

Nonstop0h 00m

$1,093

Siem ReapSan Francisco

SAI Siem Reap–Angkor Intl - SFO San Francisco

SAISFO

Siem Reap–Angkor Intl

Sat 11/21

7:25 pm-6:40 am

2 stops26h 15m

San Francisco

Sat 11/28

11:50 pm-6:30 pm

2 stops27h 40m

$1,108

Siem ReapSan Francisco

SAI Siem Reap–Angkor Intl - SFO San Francisco

SAISFO

Siem Reap–Angkor Intl

Sat 11/21

9:05 pm-9:00 am

3 stops50h 55m

San Francisco

Sat 11/28

12:00 pm-8:05 pm

3 stops65h 05m

$1,230

Siem ReapSan Francisco

SAI Siem Reap–Angkor Intl - SFO San Francisco

SAISFO

Siem Reap–Angkor Intl

Fri 12/18

9:30 pm-3:00 pm

2 stops32h 30m

San Francisco

Mon 12/28

12:00 pm-4:55 pm

2 stops61h 55m

$1,236

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/29

Sorted by cheapest first

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.

SAI-SFO

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

How long is the flight from Siem Reap to San Francisco?
There are many flights that can get you from Siem Reap to San Francisco in 34h 30m. Fly via Vietnam Airlines or China Eastern to get the fastest option. The distance from Siem Reap to San Francisco is about 7791 mi. This flight may include one or multiple stops.
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.

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$509+ Cheap flights from Siem Reap, Cambodia (SAI) to San Francisco (SFO)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/7. 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

Cheapest flights from Siem Reap to San FranciscoExplore the most affordable flight options available from Siem Reap to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 30, 2026.

Explore the most affordable flight options available from Siem Reap to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 30, 2026.

Best flights from Siem Reap to San FranciscoDiscover carefully curated flight deals from Siem Reap to San Francisco that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 30, 2026.

Discover carefully curated flight deals from Siem Reap to San Francisco that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 30, 2026.

Last-minute flights from Siem Reap to San FranciscoDiscover last-minute flight deals from Siem Reap to San Francisco. Data last updated October 30, 2026 and is based on user searches.

Discover last-minute flight deals from Siem Reap to San Francisco. Data last updated October 30, 2026 and is based on user searches.

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 October 30, 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 October 30, 2026.

Find flight deals from Siem Reap to San Francisco

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

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.

Related info for your journey

How long is the flight from Siem Reap to San Francisco?

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

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

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

Traveling to a place near San Francisco?

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Alternative routes for Siem Reap to San Francisco

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Complete your trip

Complete your trip to San Francisco by adding a car rental and/or hotel reservation to your travel itinerary.

Search flights from Siem Reap to San Francisco by cabin class

Find flights from Siem Reap to San Francisco, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Siem Reap and San Francisco flights

Browse other Siem Reap and San Francisco flight options. Last updated on October 30, 2026.

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Cheapest flights from Siem Reap to San Francisco
Explore the most affordable flight options available from Siem Reap to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 30, 2026.

Best flights from Siem Reap to San Francisco
Discover carefully curated flight deals from Siem Reap to San Francisco that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 30, 2026.

Last-minute flights from Siem Reap to San Francisco
Discover last-minute flight deals from Siem Reap to San Francisco. Data last updated October 30, 2026 and is based on user searches.

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 October 30, 2026.