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Cheap flights from San Francisco to Siem Reap from $571

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 4/6. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

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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
11:45 am - 9:40 am
SFO
-
SAI
31h 55m
1 stop
Singapore Airlines Logo
4:45 pm - 6:35 pm
SAI
-
SFO
40h 50m
1 stop
$821Singapore Airlines
Sat, Aug 1 - Sat, Jan 30
Singapore Airlines Logo
11:45 am - 9:40 am
SFO
-
SAI
31h 55m
1 stop
Singapore Airlines Logo
10:30 am - 9:50 am
SAI
-
SFO
37h 20m
1 stop
$827Singapore Airlines
Mon, Aug 10 - Sat, Aug 22
Singapore Airlines Logo
11:45 am - 9:40 am
SFO
-
SAI
31h 55m
1 stop
Singapore Airlines Logo
10:30 am - 9:00 am
SAI
-
SFO
36h 30m
2 stops
$934Singapore Airlines
Mon, Aug 10 - Sat, Aug 22
Multiple Airlines Logo
11:00 pm - 6:45 pm
SFO
-
SAI
29h 45m
2 stops
Multiple Airlines Logo
4:00 pm - 9:10 am
SAI
-
SFO
31h 10m
1 stop
$967Multiple Airlines
Mon, Apr 13 - Wed, May 13
Multiple Airlines Logo
12:20 am - 6:45 pm
SFO
-
SAI
28h 25m
2 stops
Multiple Airlines Logo
1:05 pm - 10:40 pm
SAI
-
SFO
23h 35m
2 stops
$994Multiple Airlines
Sun, Apr 26 - Mon, May 11
Multiple Airlines Logo
11:00 am - 9:40 am
SFO
-
SAI
32h 40m
1 stop
Multiple Airlines Logo
7:10 pm - 5:55 pm
SAI
-
SFO
36h 45m
1 stop
$997Multiple Airlines
Mon, Apr 13 - Wed, May 13
Singapore Airlines Logo
11:45 am - 9:40 am
SFO
-
SAI
31h 55m
1 stop
Singapore Airlines Logo
4:45 pm - 6:35 pm
SAI
-
SFO
40h 50m
1 stop
$1,033Singapore Airlines
Sat, Jul 11 - Sat, Jan 30
Multiple Airlines Logo
12:30 pm - 8:50 am
SFO
-
SAI
30h 20m
2 stops
Multiple Airlines Logo
7:30 pm - 6:45 am
SAI
-
SFO
25h 15m
2 stops
$1,043Multiple Airlines
Mon, Apr 6 - Wed, May 6
Multiple Airlines Logo
1:25 am - 1:15 pm
SFO
-
SAI
21h 50m
2 stops
Multiple Airlines Logo
10:35 pm - 7:20 am
SAI
-
SFO
22h 45m
2 stops
$1,079Multiple Airlines
Sun, Aug 9 - Sat, Aug 22
Multiple Airlines Logo
12:20 pm - 8:45 am
SFO
-
SAI
30h 25m
2 stops
Multiple Airlines Logo
5:20 pm - 10:35 am
SAI
-
SFO
31h 15m
3 stops
$1,146Multiple Airlines
Mon, Apr 27 - Mon, May 11

Singapore Airlines flights from San Francisco to Siem Reap

Our best Singapore Airlines deals on San Francisco to Siem Reap flight tickets
Singapore Airlines
Sep 5
SFO11:45 amSan Francisco
31h 55m
1 stop
SAI9:40 amSiem Reap–Angkor Intl
Jan 30
SAI4:45 pmSiem Reap–Angkor Intl
40h 50m
1 stop
SFO6:35 pmSan Francisco
$597
Singapore Airlines
Aug 1
SFO11:45 amSan Francisco
31h 55m
1 stop
SAI9:40 amSiem Reap–Angkor Intl
Jan 30
SAI4:45 pmSiem Reap–Angkor Intl
40h 50m
1 stop
SFO6:35 pmSan Francisco
$821
Singapore Airlines
Aug 10
SFO11:45 amSan Francisco
31h 55m
1 stop
SAI9:40 amSiem Reap–Angkor Intl
Aug 22
SAI10:30 amSiem Reap–Angkor Intl
37h 20m
1 stop
SFO9:50 amSan Francisco
$827

Vietnam Airlines flights from San Francisco to Siem Reap

Our best Vietnam Airlines deals on San Francisco to Siem Reap flight tickets
Vietnam Airlines
Aug 9
SFO10:50 pmSan Francisco
29h 30m
1 stop
SAI6:20 pmSiem Reap–Angkor Intl
Aug 17
SAI6:05 pmSiem Reap–Angkor Intl
61h 50m
2 stops
SFO5:55 pmSan Francisco
$1,388
Vietnam Airlines
Apr 1
SFO10:50 pmSan Francisco
27h 35m
3 stops
SAI4:25 pmSiem Reap–Angkor Intl
Apr 30
SAI6:05 pmSiem Reap–Angkor Intl
61h 50m
2 stops
SFO5:55 pmSan Francisco
$1,637
Vietnam Airlines
Apr 1
SFO10:50 pmSan Francisco
29h 30m
1 stop
SAI6:20 pmSiem Reap–Angkor Intl
Apr 30
SAI6:05 pmSiem Reap–Angkor Intl
61h 50m
2 stops
SFO5:55 pmSan Francisco
$1,646

momondo Fare Finder

 
Customize your flight search to find flights from San Francisco to Siem Reap that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated March 26, 2026.
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 - SAI

SFOSAI

San Francisco

Sat 8/1

11:45 am-9:40 am

1 stop31h 55m

Siem Reap–Angkor Intl

Sat 1/30

4:45 pm-6:35 pm

1 stop40h 50m

$821

San FranciscoSiem Reap

SFO - SAI

SFOSAI

San Francisco

Mon 8/10

11:45 am-9:40 am

1 stop31h 55m

Siem Reap–Angkor Intl

Sat 8/22

10:30 am-9:50 am

1 stop37h 20m

$827

San FranciscoSiem Reap

SFO - SAI

SFOSAI

San Francisco

Mon 8/10

11:45 am-9:40 am

1 stop31h 55m

Siem Reap–Angkor Intl

Sat 8/22

10:30 am-9:00 am

2 stops36h 30m

$934

San FranciscoSiem Reap

SFO - SAI

SFOSAI

San Francisco

Mon 4/13

11:00 pm-6:45 pm

2 stops29h 45m

Siem Reap–Angkor Intl

Wed 5/13

4:00 pm-9:10 am

1 stop31h 10m

$967

San FranciscoSiem Reap

SFO - SAI

SFOSAI

San Francisco

Sun 4/26

12:20 am-6:45 pm

2 stops28h 25m

Siem Reap–Angkor Intl

Mon 5/11

1:05 pm-10:40 pm

2 stops23h 35m

$994

San FranciscoSiem Reap

SFO - SAI

SFOSAI

San Francisco

Mon 4/13

11:00 am-9:40 am

1 stop32h 40m

Siem Reap–Angkor Intl

Wed 5/13

7:10 pm-5:55 pm

1 stop36h 45m

$997

San FranciscoSiem Reap

SFO - SAI

SFOSAI

San Francisco

Sat 7/11

11:45 am-9:40 am

1 stop31h 55m

Siem Reap–Angkor Intl

Sat 1/30

4:45 pm-6:35 pm

1 stop40h 50m

$1,033

San FranciscoSiem Reap

SFO - SAI

SFOSAI

San Francisco

Mon 4/6

12:30 pm-8:50 am

2 stops30h 20m

Siem Reap–Angkor Intl

Wed 5/6

7:30 pm-6:45 am

2 stops25h 15m

$1,043
Quickest round-trip

San FranciscoSiem Reap

SFO - SAI

SFOSAI

San Francisco

Sun 8/9

1:25 am-1:15 pm

2 stops21h 50m

Siem Reap–Angkor Intl

Sat 8/22

10:35 pm-7:20 am

2 stops22h 45m

$1,079

San FranciscoSiem Reap

SFO - SAI

SFOSAI

San Francisco

Mon 4/27

12:20 pm-8:45 am

2 stops30h 25m

Siem Reap–Angkor Intl

Mon 5/11

5:20 pm-10:35 am

3 stops31h 15m

$1,146

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?

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

Fastest flight time

30h 15m

Direct flights

None
The fastest flight from San Francisco to Siem Reap takes 30h 15m
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

  • 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 30h 15m.

  • 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
1,484 reviews
Search Singapore Airlines flights
Vietnam AirlinesPriceFrom $677Free CancellationRating
7.7
248 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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