What is the cheapest airline that flies from San Francisco to Siem Reap?

Singapore Airlines, Vietnam Airlines, and China Eastern are the most popular carriers operating from San Francisco to Siem Reap

When did momondo last update prices for flights from San Francisco Airport to Siem Reap?

Prices for flights from San Francisco Airport to Siem Reap were last updated today.

How many operators does momondo search for flights from San Francisco Airport to Siem Reap?

As of September 2026, there are 2 operators available to choose from for flights from San Francisco Airport to Siem Reap.

How old do you have to be to fly from San Francisco Airport to Siem Reap?

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from San Francisco Airport to Siem Reap.

What documentation or ID do you need to fly to Siem Reap?

The required travel and health documents for your Siem Reap trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Siem Reap. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$375 Cheap Flights from San Francisco to Siem Reap in 2026/27

Find the cheapest flights from San Francisco to Siem Reap

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

9:40 am - 4:00 pmSFO San Francisco-SAI Siem Reap–Angkor Intl

39h 20m1 stop Singapore Changi

10:45 am - 7:50 amSAI Siem Reap–Angkor Intl-SFO San Francisco

36h 05m1 stop Singapore Changi

$800Singapore Airlines

Mon, Nov 2 - Thu, Nov 12

9:40 am - 4:00 pmSFO San Francisco-SAI Siem Reap–Angkor Intl

39h 20m1 stop Singapore Changi

4:50 pm - 7:50 amSAI Siem Reap–Angkor Intl-SFO San Francisco

30h 00m1 stop Singapore Changi

$817Singapore Airlines

Tue, Nov 3 - Wed, Nov 11

9:40 am - 4:00 pmSFO San Francisco-SAI Siem Reap–Angkor Intl

39h 20m1 stop Singapore Changi

10:45 am - 7:50 amSAI Siem Reap–Angkor Intl-SFO San Francisco

36h 05m1 stop Singapore Changi

$817Singapore Airlines

Mon, Nov 2 - Wed, Nov 11

9:40 am - 4:00 pmSFO San Francisco-SAI Siem Reap–Angkor Intl

39h 20m1 stop Singapore Changi

4:50 pm - 7:50 amSAI Siem Reap–Angkor Intl-SFO San Francisco

30h 00m1 stop Singapore Changi

$818Singapore Airlines

Tue, Nov 3 - Wed, Nov 11

10:10 pm - 8:30 pmSFO San Francisco-SAI Siem Reap–Angkor Intl

32h 20m1 stop Ho Chi Minh City

6:40 pm - 5:00 pmSAI Siem Reap–Angkor Intl-SFO San Francisco

37h 20m1 stop Ho Chi Minh City

$860Vietnam Airlines

Sun, Oct 25 - Tue, Nov 24

10:10 pm - 5:40 pmSFO San Francisco-SAI Siem Reap–Angkor Intl

29h 30m1 stop Ho Chi Minh City

6:40 pm - 5:00 pmSAI Siem Reap–Angkor Intl-SFO San Francisco

37h 20m1 stop Ho Chi Minh City

$860Vietnam Airlines

Wed, Oct 28 - Tue, Nov 24

9:10 pm - 8:30 pmSFO San Francisco-SAI Siem Reap–Angkor Intl

32h 20m1 stop Ho Chi Minh City

9:30 pm - 5:00 pmSAI Siem Reap–Angkor Intl-SFO San Francisco

34h 30m1 stop Ho Chi Minh City

$860Vietnam Airlines

Sun, Nov 1 - Wed, Nov 18

11:25 am - 9:15 amSFO San Francisco-SAI Siem Reap–Angkor Intl

30h 50m2 stops Hong Kong Intl Bangkok Suvarnabhumi

9:55 am - 9:15 pmSAI Siem Reap–Angkor Intl-SFO San Francisco

26h 20m2 stops Bangkok Suvarnabhumi Hong Kong Intl

$909Multiple Airlines

Mon, Feb 1 - Mon, Mar 1

10:55 pm - 6:30 pmSFO San Francisco-SAI Siem Reap–Angkor Intl

28h 35m2 stops Hong Kong Intl Bangkok Suvarnabhumi

9:55 am - 9:30 amSAI Siem Reap–Angkor Intl-SFO San Francisco

38h 35m2 stops Bangkok Suvarnabhumi Hong Kong Intl

$938Multiple Airlines

Mon, Nov 2 - Wed, Nov 11

11:25 am - 9:15 amSFO San Francisco-SAI Siem Reap–Angkor Intl

30h 50m2 stops Hong Kong Intl Bangkok Suvarnabhumi

9:55 am - 8:55 pmSAI Siem Reap–Angkor Intl-SFO San Francisco

26h 00m2 stops Bangkok Suvarnabhumi Hong Kong Intl

$938Multiple Airlines

Mon, Nov 2 - Wed, Nov 11

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Singapore Airlines flights from San Francisco to Region of Siem Reap

Our best Singapore Airlines deals on San Francisco to Region of Siem Reap flight tickets

Singapore Airlines

Nov 2

SFO9:40 amSan Francisco

39h 20m

1 stop

SAI4:00 pmSiem Reap–Angkor Intl

Nov 12

SAI10:45 amSiem Reap–Angkor Intl

36h 05m

1 stop

SFO7:50 amSan Francisco

$800

Singapore Airlines

Nov 2

SFO9:40 amSan Francisco

39h 20m

1 stop

SAI4:00 pmSiem Reap–Angkor Intl

Nov 11

SAI10:45 amSiem Reap–Angkor Intl

36h 05m

1 stop

SFO7:50 amSan Francisco

$817

Singapore Airlines

Nov 2

SFO9:40 amSan Francisco

39h 20m

1 stop

SAI4:00 pmSiem Reap–Angkor Intl

Nov 11

SAI10:45 amSiem Reap–Angkor Intl

36h 05m

1 stop

SFO7:50 amSan Francisco

$818

Vietnam Airlines flights from San Francisco to Region of Siem Reap

Our best Vietnam Airlines deals on San Francisco to Region of Siem Reap flight tickets

Vietnam Airlines

Oct 28

SFO10:10 pmSan Francisco

29h 30m

1 stop

SAI5:40 pmSiem Reap–Angkor Intl

Nov 24

SAI6:40 pmSiem Reap–Angkor Intl

37h 20m

1 stop

SFO5:00 pmSan Francisco

$860

Vietnam Airlines

Oct 25

SFO10:10 pmSan Francisco

32h 20m

1 stop

SAI8:30 pmSiem Reap–Angkor Intl

Nov 25

SAI9:30 pmSiem Reap–Angkor Intl

34h 30m

1 stop

SFO5:00 pmSan Francisco

$900

Vietnam Airlines

Feb 3

SFO9:10 pmSan Francisco

32h 20m

1 stop

SAI8:30 pmSiem Reap–Angkor Intl

Feb 13

SAI6:40 pmSiem Reap–Angkor Intl

37h 20m

1 stop

SFO5:00 pmSan Francisco

$907

momondo Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

San FranciscoSiem Reap

SFO San Francisco - SAI Siem Reap–Angkor Intl

SFOSAI

San Francisco

Mon 11/2

9:40 am-4:00 pm

1 stop39h 20m

Siem Reap–Angkor Intl

Thu 11/12

10:45 am-7:50 am

1 stop36h 05m

$800

San FranciscoSiem Reap

SFO San Francisco - SAI Siem Reap–Angkor Intl

SFOSAI

San Francisco

Tue 11/3

9:40 am-4:00 pm

1 stop39h 20m

Siem Reap–Angkor Intl

Wed 11/11

4:50 pm-7:50 am

1 stop30h 00m

$817

San FranciscoSiem Reap

SFO San Francisco - SAI Siem Reap–Angkor Intl

SFOSAI

San Francisco

Mon 11/2

9:40 am-4:00 pm

1 stop39h 20m

Siem Reap–Angkor Intl

Wed 11/11

10:45 am-7:50 am

1 stop36h 05m

$817

San FranciscoSiem Reap

SFO San Francisco - SAI Siem Reap–Angkor Intl

SFOSAI

San Francisco

Tue 11/3

9:40 am-4:00 pm

1 stop39h 20m

Siem Reap–Angkor Intl

Wed 11/11

4:50 pm-7:50 am

1 stop30h 00m

$818

San FranciscoSiem Reap

SFO San Francisco - SAI Siem Reap–Angkor Intl

SFOSAI

San Francisco

Sun 10/25

10:10 pm-8:30 pm

1 stop32h 20m

Siem Reap–Angkor Intl

Tue 11/24

6:40 pm-5:00 pm

1 stop37h 20m

$860

San FranciscoSiem Reap

SFO San Francisco - SAI Siem Reap–Angkor Intl

SFOSAI

San Francisco

Wed 10/28

10:10 pm-5:40 pm

1 stop29h 30m

Siem Reap–Angkor Intl

Tue 11/24

6:40 pm-5:00 pm

1 stop37h 20m

$860

San FranciscoSiem Reap

SFO San Francisco - SAI Siem Reap–Angkor Intl

SFOSAI

San Francisco

Sun 11/1

9:10 pm-8:30 pm

1 stop32h 20m

Siem Reap–Angkor Intl

Wed 11/18

9:30 pm-5:00 pm

1 stop34h 30m

$860

San FranciscoSiem Reap

SFO San Francisco - SAI Siem Reap–Angkor Intl

SFOSAI

San Francisco

Mon 2/1

11:25 am-9:15 am

2 stops30h 50m

Siem Reap–Angkor Intl

Mon 3/1

9:55 am-9:15 pm

2 stops26h 20m

$909

San FranciscoSiem Reap

SFO San Francisco - SAI Siem Reap–Angkor Intl

SFOSAI

San Francisco

Mon 11/2

10:55 pm-6:30 pm

2 stops28h 35m

Siem Reap–Angkor Intl

Wed 11/11

9:55 am-9:30 am

2 stops38h 35m

$938

Quickest round-trip

San FranciscoSiem Reap

SFO San Francisco - SAI Siem Reap–Angkor Intl

SFOSAI

San Francisco

Mon 11/2

11:25 am-9:15 am

2 stops30h 50m

Siem Reap–Angkor Intl

Wed 11/11

9:55 am-8:55 pm

2 stops26h 00m

$938

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from San Francisco to Region of Siem Reap

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

What is the cheapest month to fly to Region of Siem Reap?

The month of June is another great option to travel to Region of Siem Reap, with average flight prices from San Francisco averaging around $0.

Cheap San Francisco to Region of Siem Reap flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from San Francisco to Region of Siem Reap

Best Price Found	$375
Fastest flight time	23h 20m
Direct flights	None

The best one-way flight to Region of Siem Reap from San Francisco in the past 72 hours is $375. The best round-trip flight deal from San Francisco to Region of Siem Reap found on momondo in the last 72 hours is $800.

The fastest flight from San Francisco to Region of Siem Reap takes 23h 20m

There are no direct flights from San Francisco to Region of Siem Reap. There are no popular flight routes from San Francisco to Region of Siem Reap.

Search flight deals

Frequently asked questions about flying from San Francisco to Siem Reap

When did momondo last update prices for flights from San Francisco Airport to Siem Reap?
Prices for flights from San Francisco Airport to Siem Reap were last updated today.
How many operators does momondo search for flights from San Francisco Airport to Siem Reap?
As of September 2026, there are 2 operators available to choose from for flights from San Francisco Airport to Siem Reap.
How old do you have to be to fly from San Francisco Airport to Siem Reap?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from San Francisco Airport to Siem Reap.
What documentation or ID do you need to fly to Siem Reap?
The required travel and health documents for your Siem Reap trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Siem Reap. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best airlines flying from San Francisco to Region of Siem Reap

Compare and see reviews for airlines that fly from San Francisco to Region of Siem Reap with momondo

Airline	Rating	Free Cancellation	Price
Singapore Airlines	PriceFrom $599	Free Cancellation	Rating 8.2 1,604 reviews		Search Singapore Airlines flights
Vietnam Airlines	PriceFrom $647	Free Cancellation	Rating 7.7 288 reviews		Search Vietnam Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from San Francisco to Siem Reap?

Finding the right flight to Siem Reap from San Francisco is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Siem Reap quick and easy, saving you time and money.

Can I find flights from San Francisco to Siem Reap with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for San Francisco to Siem Reap flights to just show those with flexible booking policies.

How can momondo help me find flights from San Francisco to Siem Reap?

momondo provides multiple filters to help you find the best flight to Siem Reap from San Francisco. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from San Francisco to Siem Reap right now. Can momondo alert me if prices change?

Yes. momondo can track prices for San Francisco to Siem Reap flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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Cheap flights from San Francisco to Siem Reap from $375

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from San Francisco to Siem Reap departing on 2/19. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Singapore Airlines flights from San Francisco to Region of Siem Reap

Our best Singapore Airlines deals on San Francisco to Region of Siem Reap flight tickets

Vietnam Airlines flights from San Francisco to Region of Siem Reap

Our best Vietnam Airlines deals on San Francisco to Region of Siem Reap flight tickets

momondo Fare Finder

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

See travel insights to Siem Reap from

How to get the cheapest flight ticket from San Francisco to Region of Siem Reap

What is the cheapest month to fly to Region of Siem Reap?

What is the cheapest airline that flies from San Francisco to Siem Reap?

Cheap San Francisco to Region of Siem Reap flight deals and tips

Best Price Found

Fastest flight time

Direct flights

Frequently asked questions about flying from San Francisco to Siem Reap

Best airlines flying from San Francisco to Region of Siem Reap

Compare and see reviews for airlines that fly from San Francisco to Region of Siem Reap with momondo

Why use momondo?

An easier way to manage your Region of Siem Reap trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Siem Reap

Popular cities in Siem Reap

Popular flights according to clicks in the last 7 days on momondo

San Francisco flight routes

According to popular flight searches on momondo this year

Region of Siem Reap flight routes

According to popular flight searches on momondo this year

Fly your favorite airline to Siem Reap

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List of cabin classes available on flights landing in Siem Reap. Availability may vary depending on flight origin and airline.

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According to popular flight searches on momondo this year