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Cheap flights from San Francisco to Siem Reap from $369

1 adult
1 adult, Economy, 0 bags

Find the cheapest flights from San Francisco to Siem Reap

Cheap round-trip flights

Enter your travel dates to find the best prices.
Vietnam Airlines Logo
10:50 pm - 6:40 pmSFO  San Francisco-SAI Siem Reap–Angkor Intl
29h 50m1 stop Ho Chi Minh City
Vietnam Airlines Logo
7:40 pm - 5:55 pmSAI  Siem Reap–Angkor Intl-SFO San Francisco
36h 15m1 stop Ho Chi Minh City
$708Vietnam Airlines
Thu, Apr 22 - Wed, Apr 28
Vietnam Airlines Logo
10:50 pm - 6:40 pmSFO  San Francisco-SAI Siem Reap–Angkor Intl
29h 50m1 stop Ho Chi Minh City
Vietnam Airlines Logo
7:40 pm - 5:55 pmSAI  Siem Reap–Angkor Intl-SFO San Francisco
36h 15m1 stop Ho Chi Minh City
$709Vietnam Airlines
Thu, Apr 22 - Wed, Apr 28
Vietnam Airlines Logo
10:50 pm - 6:40 pmSFO  San Francisco-SAI Siem Reap–Angkor Intl
29h 50m1 stop Ho Chi Minh City
Vietnam Airlines Logo
7:40 pm - 5:55 pmSAI  Siem Reap–Angkor Intl-SFO San Francisco
36h 15m1 stop Ho Chi Minh City
$709Vietnam Airlines
Wed, Apr 21 - Wed, Apr 28
Vietnam Airlines Logo
10:50 pm - 6:40 pmSFO  San Francisco-SAI Siem Reap–Angkor Intl
29h 50m1 stop Ho Chi Minh City
Vietnam Airlines Logo
7:40 pm - 5:55 pmSAI  Siem Reap–Angkor Intl-SFO San Francisco
36h 15m1 stop Ho Chi Minh City
$779Vietnam Airlines
Thu, Apr 29 - Fri, Jun 25
Vietnam Airlines Logo
10:50 pm - 6:40 pmSFO  San Francisco-SAI Siem Reap–Angkor Intl
29h 50m1 stop Ho Chi Minh City
Vietnam Airlines Logo
7:40 pm - 5:55 pmSAI  Siem Reap–Angkor Intl-SFO San Francisco
36h 15m1 stop Ho Chi Minh City
$779Vietnam Airlines
Thu, Apr 29 - Sat, Jun 26
Vietnam Airlines Logo
10:50 pm - 6:40 pmSFO  San Francisco-SAI Siem Reap–Angkor Intl
29h 50m1 stop Ho Chi Minh City
Vietnam Airlines Logo
7:40 pm - 5:55 pmSAI  Siem Reap–Angkor Intl-SFO San Francisco
36h 15m1 stop Ho Chi Minh City
$819Vietnam Airlines
Sun, May 2 - Sat, Jun 26
Vietnam Airlines Logo
10:50 pm - 6:40 pmSFO  San Francisco-SAI Siem Reap–Angkor Intl
29h 50m1 stop Ho Chi Minh City
Vietnam Airlines Logo
7:40 pm - 5:55 pmSAI  Siem Reap–Angkor Intl-SFO San Francisco
36h 15m1 stop Ho Chi Minh City
$819Vietnam Airlines
Sun, May 2 - Fri, Jun 25
Vietnam Airlines Logo
10:50 pm - 6:40 pmSFO  San Francisco-SAI Siem Reap–Angkor Intl
29h 50m1 stop Ho Chi Minh City
Vietnam Airlines Logo
7:40 pm - 5:55 pmSAI  Siem Reap–Angkor Intl-SFO San Francisco
36h 15m1 stop Ho Chi Minh City
$819Vietnam Airlines
Sat, May 1 - Fri, Jun 25
Singapore Airlines Logo
10:25 pm - 9:40 amSFO  San Francisco-SAI Siem Reap–Angkor Intl
21h 15m1 stop Singapore Changi
Singapore Airlines Logo
10:30 am - 9:50 amSAI  Siem Reap–Angkor Intl-SFO San Francisco
37h 20m1 stop Singapore Changi
$947Singapore Airlines
Fri, Apr 16 - Mon, Apr 26
Singapore Airlines Logo
9:40 am - 4:00 pmSFO  San Francisco-SAI Siem Reap–Angkor Intl
39h 20m1 stop Singapore Changi
Singapore Airlines Logo
10:45 am - 7:50 amSAI  Siem Reap–Angkor Intl-SFO San Francisco
60h 05m1 stop Singapore Changi
$1,012Singapore Airlines
Mon, Feb 22 - Sun, Feb 28

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Vietnam Airlines flights from San Francisco to Siem Reap

Our best Vietnam Airlines deals on San Francisco to Siem Reap flight tickets
Vietnam Airlines
Apr 22
SFO10:50 pmSan Francisco
29h 50m
1 stop
SAI6:40 pmSiem Reap–Angkor Intl
Apr 28
SAI7:40 pmSiem Reap–Angkor Intl
36h 15m
1 stop
SFO5:55 pmSan Francisco
$708
Vietnam Airlines
Apr 22
SFO10:50 pmSan Francisco
29h 50m
1 stop
SAI6:40 pmSiem Reap–Angkor Intl
Apr 28
SAI7:40 pmSiem Reap–Angkor Intl
36h 15m
1 stop
SFO5:55 pmSan Francisco
$709
Vietnam Airlines
Apr 29
SFO10:50 pmSan Francisco
29h 50m
1 stop
SAI6:40 pmSiem Reap–Angkor Intl
Jun 25
SAI7:40 pmSiem Reap–Angkor Intl
36h 15m
1 stop
SFO5:55 pmSan Francisco
$779

Singapore Airlines flights from San Francisco to Siem Reap

Our best Singapore Airlines deals on San Francisco to Siem Reap flight tickets
Singapore Airlines
Apr 16
SFO10:25 pmSan Francisco
21h 15m
1 stop
SAI9:40 amSiem Reap–Angkor Intl
Apr 26
SAI10:30 amSiem Reap–Angkor Intl
37h 20m
1 stop
SFO9:50 amSan Francisco
$947
Singapore Airlines
Feb 22
SFO9:40 amSan Francisco
39h 20m
1 stop
SAI4:00 pmSiem Reap–Angkor Intl
Feb 28
SAI10:45 amSiem Reap–Angkor Intl
60h 05m
1 stop
SFO7:50 amSan Francisco
$1,012
Singapore Airlines
May 1
SFO11:45 amSan Francisco
31h 55m
1 stop
SAI9:40 amSiem Reap–Angkor Intl
Jun 26
SAI10:30 amSiem Reap–Angkor Intl
37h 20m
1 stop
SFO9:50 amSan Francisco
$1,039

momondo Fare Finder

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

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Route

Depart

Return

Price

Cheapest round-trip

San FranciscoSiem Reap

SFO San Francisco - SAI Siem Reap–Angkor Intl

SFOSAI

San Francisco

Thu 4/22

10:50 pm-6:40 pm

1 stop29h 50m

Siem Reap–Angkor Intl

Wed 4/28

7:40 pm-5:55 pm

1 stop36h 15m

$708

San FranciscoSiem Reap

SFO San Francisco - SAI Siem Reap–Angkor Intl

SFOSAI

San Francisco

Thu 4/22

10:50 pm-6:40 pm

1 stop29h 50m

Siem Reap–Angkor Intl

Wed 4/28

7:40 pm-5:55 pm

1 stop36h 15m

$709

San FranciscoSiem Reap

SFO San Francisco - SAI Siem Reap–Angkor Intl

SFOSAI

San Francisco

Wed 4/21

10:50 pm-6:40 pm

1 stop29h 50m

Siem Reap–Angkor Intl

Wed 4/28

7:40 pm-5:55 pm

1 stop36h 15m

$709

San FranciscoSiem Reap

SFO San Francisco - SAI Siem Reap–Angkor Intl

SFOSAI

San Francisco

Thu 4/29

10:50 pm-6:40 pm

1 stop29h 50m

Siem Reap–Angkor Intl

Fri 6/25

7:40 pm-5:55 pm

1 stop36h 15m

$779

San FranciscoSiem Reap

SFO San Francisco - SAI Siem Reap–Angkor Intl

SFOSAI

San Francisco

Thu 4/29

10:50 pm-6:40 pm

1 stop29h 50m

Siem Reap–Angkor Intl

Sat 6/26

7:40 pm-5:55 pm

1 stop36h 15m

$779

San FranciscoSiem Reap

SFO San Francisco - SAI Siem Reap–Angkor Intl

SFOSAI

San Francisco

Sun 5/2

10:50 pm-6:40 pm

1 stop29h 50m

Siem Reap–Angkor Intl

Sat 6/26

7:40 pm-5:55 pm

1 stop36h 15m

$819

San FranciscoSiem Reap

SFO San Francisco - SAI Siem Reap–Angkor Intl

SFOSAI

San Francisco

Sun 5/2

10:50 pm-6:40 pm

1 stop29h 50m

Siem Reap–Angkor Intl

Fri 6/25

7:40 pm-5:55 pm

1 stop36h 15m

$819

San FranciscoSiem Reap

SFO San Francisco - SAI Siem Reap–Angkor Intl

SFOSAI

San Francisco

Sat 5/1

10:50 pm-6:40 pm

1 stop29h 50m

Siem Reap–Angkor Intl

Fri 6/25

7:40 pm-5:55 pm

1 stop36h 15m

$819
Quickest round-trip

San FranciscoSiem Reap

SFO San Francisco - SAI Siem Reap–Angkor Intl

SFOSAI

San Francisco

Fri 4/16

10:25 pm-9:40 am

1 stop21h 15m

Siem Reap–Angkor Intl

Mon 4/26

10:30 am-9:50 am

1 stop37h 20m

$947

San FranciscoSiem Reap

SFO San Francisco - SAI Siem Reap–Angkor Intl

SFOSAI

San Francisco

Mon 2/22

9:40 am-4:00 pm

1 stop39h 20m

Siem Reap–Angkor Intl

Sun 2/28

10:45 am-7:50 am

1 stop60h 05m

$1,012

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Siem Reap from

How to get the cheapest flight ticket from San Francisco to 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

What is the typical price of a round-trip flight between San Francisco and Siem Reap?

Prices are currently low for flights on this route.

Typical prices usually range from $880 to $1,140.
The lowest price recently found on this route was $708.

What is the cheapest month to fly to Siem Reap?

If you don’t want to visit Siem Reap in July, then you should wait until June to fly from San Francisco, when ticket prices are also cheap, with an average price of $0.

How have San Francisco to Siem Reap flight prices changed over time?

As of November 2026, prices for San Francisco to Siem Reap flights are approximately 15% cheaper when compared to flights at the same time last year.

When to book flights from San Francisco to Siem Reap

Are you open to changing your travel dates? Check out the ideal times to fly from San Francisco to Siem Reap according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap San Francisco to Siem Reap (SFO to SAI) flight deals and tips

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

Best Price Found

$369

Fastest flight time

27h 55m

Direct flights

None
The best one-way flight to Siem Reap from San Francisco in the past 72 hours is $369. The best round-trip flight deal from San Francisco to Siem Reap found on momondo in the last 72 hours is $708.
The fastest flight from San Francisco to Siem Reap takes 27h 55m
There are no direct flights from San Francisco to Siem Reap. There are no popular flight routes from San Francisco to Siem Reap.
Search flight deals

Frequently asked questions about flying from San Francisco to Siem Reap

  • How far is San Francisco to Siem Reap–Angkor Intl by plane?

    A flight from San Francisco to Siem Reap–Angkor Intl will travel around 7799.7 mi. A reasonable flight in good conditions will take 27h 55m.

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

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

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

  • How old do you have to be to fly from San Francisco Airport to Siem Reap–Angkor Intl Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from San Francisco Airport to Siem Reap–Angkor Intl Airport.

  • What documentation or ID do you need to fly to Siem Reap–Angkor Intl Airport?

    The necessary travel and health documents for your Siem Reap–Angkor Intl Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from San Francisco to Siem Reap?

Best airlines flying from San Francisco to Siem Reap

Compare and see reviews for airlines that fly from San Francisco to Siem Reap with momondo
Airline
Rating
Free Cancellation
Price
Singapore AirlinesPriceFrom $599Free CancellationRating
8.2
1,633 reviews
Search Singapore Airlines flights

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from San Francisco to Siem Reap. momondo saves you time and could save you money on your trip.

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

Yes. All flights to Siem Reap from San Francisco on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Siem Reap from San Francisco.

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

If you are not ready to book a flight from San Francisco to Siem Reap now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Siem Reap and let you know when they change.

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