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Cheap flights from San Francisco to Siem Reap from $374

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.
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
36h 05m1 stop Singapore Changi
$796Singapore Airlines
Mon, Nov 2 - Thu, Nov 12
Singapore Airlines Logo
9:40 am - 4:00 pmSFO  San Francisco-SAI Siem Reap–Angkor Intl
39h 20m1 stop Singapore Changi
Singapore Airlines Logo
4:50 pm - 7:50 amSAI  Siem Reap–Angkor Intl-SFO San Francisco
30h 00m1 stop Singapore Changi
$796Singapore Airlines
Mon, Nov 2 - Wed, Nov 11
China Eastern Logo
12:00 pm - 8:05 pmSFO  San Francisco-SAI Siem Reap–Angkor Intl
65h 05m3 stops Shanghai Pu Dong Ji'an Ji An/Jing Gang Shan Kunming Changshui
China Eastern Logo
9:05 pm - 9:00 amSAI  Siem Reap–Angkor Intl-SFO San Francisco
50h 55m3 stops Kunming Changshui Fuzhou Shanghai Pu Dong
$802China Eastern
Mon, Nov 2 - Thu, Nov 12
China Eastern Logo
12:00 pm - 8:05 pmSFO  San Francisco-SAI Siem Reap–Angkor Intl
65h 05m3 stops Shanghai Pu Dong Ji'an Ji An/Jing Gang Shan Kunming Changshui
China Eastern Logo
9:05 pm - 9:00 amSAI  Siem Reap–Angkor Intl-SFO San Francisco
50h 55m2 stops Kunming Changshui Shanghai Pu Dong
$802China Eastern
Mon, Nov 2 - Thu, Nov 12
Singapore Airlines Logo
9:40 am - 4:00 pmSFO  San Francisco-SAI Siem Reap–Angkor Intl
39h 20m1 stop Singapore Changi
Singapore Airlines Logo
4:50 pm - 7:50 amSAI  Siem Reap–Angkor Intl-SFO San Francisco
30h 00m1 stop Singapore Changi
$802Singapore Airlines
Tue, Nov 3 - Wed, Nov 11
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
36h 05m1 stop Singapore Changi
$802Singapore Airlines
Mon, Nov 2 - Thu, Nov 12
China Eastern Logo
12:00 pm - 8:05 pmSFO  San Francisco-SAI Siem Reap–Angkor Intl
65h 05m2 stops Shanghai Pu Dong Kunming Changshui
China Eastern Logo
9:05 pm - 9:00 amSAI  Siem Reap–Angkor Intl-SFO San Francisco
50h 55m2 stops Kunming Changshui Shanghai Pu Dong
$802China Eastern
Mon, Nov 2 - Thu, Nov 12
Vietnam Airlines Logo
9:10 pm - 8:30 pmSFO  San Francisco-SAI Siem Reap–Angkor Intl
32h 20m1 stop Ho Chi Minh City
Vietnam Airlines Logo
6:40 pm - 5:00 pmSAI  Siem Reap–Angkor Intl-SFO San Francisco
37h 20m1 stop Ho Chi Minh City
$860Vietnam Airlines
Thu, Nov 12 - Wed, Dec 2
Vietnam Airlines Logo
9:10 pm - 5:40 pmSFO  San Francisco-SAI Siem Reap–Angkor Intl
29h 30m1 stop Ho Chi Minh City
Vietnam Airlines Logo
6:40 pm - 5:00 pmSAI  Siem Reap–Angkor Intl-SFO San Francisco
37h 20m1 stop Ho Chi Minh City
$860Vietnam Airlines
Wed, Nov 11 - Wed, Dec 2
Vietnam Airlines Logo
9:10 pm - 8:30 pmSFO  San Francisco-SAI Siem Reap–Angkor Intl
32h 20m1 stop Ho Chi Minh City
Vietnam Airlines Logo
9:30 pm - 5:00 pmSAI  Siem Reap–Angkor Intl-SFO San Francisco
34h 30m1 stop Ho Chi Minh City
$860Vietnam Airlines
Thu, Nov 12 - Wed, Dec 9

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China Eastern flights from San Francisco to Siem Reap

Our best China Eastern deals on San Francisco to Siem Reap flight tickets
China Eastern
Nov 14
SFO12:00 pmSan Francisco
65h 05m
2 stops
SAI8:05 pmSiem Reap–Angkor Intl
Dec 5
SAI9:05 pmSiem Reap–Angkor Intl
50h 55m
2 stops
SFO9:00 amSan Francisco
$804
China Eastern
Nov 14
SFO12:00 pmSan Francisco
65h 05m
2 stops
SAI8:05 pmSiem Reap–Angkor Intl
Dec 6
SAI9:05 pmSiem Reap–Angkor Intl
26h 55m
2 stops
SFO9:00 amSan Francisco
$805
China Eastern
Nov 12
SFO12:00 pmSan Francisco
41h 05m
3 stops
SAI8:05 pmSiem Reap–Angkor Intl
Dec 1
SAI9:05 pmSiem Reap–Angkor Intl
50h 55m
2 stops
SFO9:00 amSan Francisco
$867

Vietnam Airlines flights from San Francisco to Siem Reap

Our best Vietnam Airlines deals on San Francisco to Siem Reap flight tickets
Vietnam Airlines
Nov 12
SFO9:10 pmSan Francisco
32h 20m
1 stop
SAI8:30 pmSiem Reap–Angkor Intl
Dec 2
SAI6:40 pmSiem Reap–Angkor Intl
37h 20m
1 stop
SFO5:00 pmSan Francisco
$860
Vietnam Airlines
Nov 11
SFO9:10 pmSan Francisco
29h 30m
1 stop
SAI5:40 pmSiem Reap–Angkor Intl
Dec 2
SAI9:30 pmSiem Reap–Angkor Intl
34h 30m
1 stop
SFO5:00 pmSan Francisco
$886
Vietnam Airlines
Nov 12
SFO9:10 pmSan Francisco
32h 20m
1 stop
SAI8:30 pmSiem Reap–Angkor Intl
Dec 5
SAI6:40 pmSiem Reap–Angkor Intl
37h 20m
1 stop
SFO5:00 pmSan Francisco
$900

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

$796

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

4:50 pm-7:50 am

1 stop30h 00m

$796

San FranciscoSiem Reap

SFO San Francisco - SAI Siem Reap–Angkor Intl

SFOSAI

San Francisco

Mon 11/2

12:00 pm-8:05 pm

3 stops65h 05m

Siem Reap–Angkor Intl

Thu 11/12

9:05 pm-9:00 am

3 stops50h 55m

$802

San FranciscoSiem Reap

SFO San Francisco - SAI Siem Reap–Angkor Intl

SFOSAI

San Francisco

Mon 11/2

12:00 pm-8:05 pm

3 stops65h 05m

Siem Reap–Angkor Intl

Thu 11/12

9:05 pm-9:00 am

2 stops50h 55m

$802

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

$802

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

$802

San FranciscoSiem Reap

SFO San Francisco - SAI Siem Reap–Angkor Intl

SFOSAI

San Francisco

Mon 11/2

12:00 pm-8:05 pm

2 stops65h 05m

Siem Reap–Angkor Intl

Thu 11/12

9:05 pm-9:00 am

2 stops50h 55m

$802

San FranciscoSiem Reap

SFO San Francisco - SAI Siem Reap–Angkor Intl

SFOSAI

San Francisco

Thu 11/12

9:10 pm-8:30 pm

1 stop32h 20m

Siem Reap–Angkor Intl

Wed 12/2

6:40 pm-5:00 pm

1 stop37h 20m

$860
Quickest round-trip

San FranciscoSiem Reap

SFO San Francisco - SAI Siem Reap–Angkor Intl

SFOSAI

San Francisco

Wed 11/11

9:10 pm-5:40 pm

1 stop29h 30m

Siem Reap–Angkor Intl

Wed 12/2

6:40 pm-5:00 pm

1 stop37h 20m

$860

San FranciscoSiem Reap

SFO San Francisco - SAI Siem Reap–Angkor Intl

SFOSAI

San Francisco

Thu 11/12

9:10 pm-8:30 pm

1 stop32h 20m

Siem Reap–Angkor Intl

Wed 12/9

9:30 pm-5:00 pm

1 stop34h 30m

$860

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 typical for flights on this route.

Typical prices usually range from $722 to $850.
The lowest price recently found on this route was $796.

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 September 2026, prices for San Francisco to Siem Reap flights are approximately 21% 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

$374

Fastest flight time

27h 05m

Direct flights

None
The best one-way flight to Siem Reap from San Francisco in the past 72 hours is $374. The best round-trip flight deal from San Francisco to Siem Reap found on momondo in the last 72 hours is $796.
The fastest flight from San Francisco to Siem Reap takes 27h 05m
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 05m.

  • 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
1,607 reviews
Search Singapore Airlines flights
Vietnam AirlinesPriceFrom $647Free CancellationRating
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?

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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