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Cheap flights from San Francisco to Siem Reap from $748

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 5/16. 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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Find the cheapest flights from San Francisco to Siem Reap

Cheap round-trip flights

Enter your travel dates to find the best prices.
China Eastern Logo
12:00 pm - 8:10 pm
SFO
-
SAI
42h 10m
2 stops
China Eastern Logo
9:10 pm - 9:05 am
SAI
-
SFO
25h 55m
2 stops
$762China Eastern
Mon, Sep 14 - Wed, Oct 21
Singapore Airlines Logo
11:45 am - 3:10 pm
SFO
-
SAI
37h 25m
1 stop
Singapore Airlines Logo
4:00 pm - 9:50 am
SAI
-
SFO
31h 50m
1 stop
$794Singapore Airlines
Mon, Sep 14 - Wed, Oct 21
China Eastern Logo
12:00 pm - 8:10 pm
SFO
-
SAI
42h 10m
2 stops
China Eastern Logo
9:10 pm - 9:05 am
SAI
-
SFO
25h 55m
2 stops
$818China Eastern
Mon, Sep 14 - Wed, Oct 21
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
$819Singapore Airlines
Thu, Sep 17 - Tue, Oct 20
Singapore Airlines Logo
9:40 am - 3:55 pm
SFO
-
SAI
39h 15m
1 stop
Singapore Airlines Logo
10:45 am - 7:50 am
SAI
-
SFO
36h 05m
1 stop
$839Singapore Airlines
Sun, Nov 1 - Fri, Nov 6
Singapore Airlines Logo
9:40 am - 3:55 pm
SFO
-
SAI
39h 15m
1 stop
Singapore Airlines Logo
10:45 am - 7:50 am
SAI
-
SFO
36h 05m
1 stop
$855Singapore Airlines
Fri, Nov 6 - Wed, Nov 18
China Eastern Logo
12:00 pm - 8:10 pm
SFO
-
SAI
42h 10m
3 stops
China Eastern Logo
9:10 pm - 9:05 am
SAI
-
SFO
25h 55m
2 stops
$868China Eastern
Mon, Sep 14 - Fri, Oct 23
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
$924Singapore Airlines
Fri, Sep 4 - Sat, Sep 19
Multiple Airlines Logo
12:20 am - 6:55 pm
SFO
-
SAI
28h 35m
2 stops
Multiple Airlines Logo
9:40 am - 10:40 pm
SAI
-
SFO
27h 00m
2 stops
$989Multiple Airlines
Wed, Sep 16 - Tue, Oct 20
Singapore Airlines Logo
11:45 am - 9:40 am
SFO
-
SAI
31h 55m
1 stop
Singapore Airlines Logo
10:30 am - 10:43 am
SAI
-
SFO
38h 13m
2 stops
$1,000Singapore Airlines
Thu, Sep 17 - Tue, Oct 20

China Eastern flights from San Francisco to Siem Reap

Our best China Eastern deals on San Francisco to Siem Reap flight tickets
China Eastern
Sep 14
SFO12:00 pmSan Francisco
42h 10m
2 stops
SAI8:10 pmSiem Reap–Angkor Intl
Oct 21
SAI9:10 pmSiem Reap–Angkor Intl
25h 55m
2 stops
SFO9:05 amSan Francisco
$762
China Eastern
Sep 14
SFO12:00 pmSan Francisco
42h 10m
2 stops
SAI8:10 pmSiem Reap–Angkor Intl
Oct 21
SAI9:10 pmSiem Reap–Angkor Intl
25h 55m
2 stops
SFO9:05 amSan Francisco
$818
China Eastern
Sep 14
SFO12:00 pmSan Francisco
42h 10m
3 stops
SAI8:10 pmSiem Reap–Angkor Intl
Oct 23
SAI9:10 pmSiem Reap–Angkor Intl
25h 55m
2 stops
SFO9:05 amSan Francisco
$868

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 14
SFO11:45 amSan Francisco
37h 25m
1 stop
SAI3:10 pmSiem Reap–Angkor Intl
Oct 21
SAI4:00 pmSiem Reap–Angkor Intl
31h 50m
1 stop
SFO9:50 amSan Francisco
$794
Singapore Airlines
Sep 17
SFO11:45 amSan Francisco
31h 55m
1 stop
SAI9:40 amSiem Reap–Angkor Intl
Oct 20
SAI10:30 amSiem Reap–Angkor Intl
37h 20m
1 stop
SFO9:50 amSan Francisco
$819
Singapore Airlines
Nov 1
SFO9:40 amSan Francisco
39h 15m
1 stop
SAI3:55 pmSiem Reap–Angkor Intl
Nov 6
SAI10:45 amSiem Reap–Angkor Intl
36h 05m
1 stop
SFO7:50 amSan Francisco
$839

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 May 11, 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

Mon 9/14

12:00 pm-8:10 pm

2 stops42h 10m

Siem Reap–Angkor Intl

Wed 10/21

9:10 pm-9:05 am

2 stops25h 55m

$762

San FranciscoSiem Reap

SFO - SAI

SFOSAI

San Francisco

Mon 9/14

11:45 am-3:10 pm

1 stop37h 25m

Siem Reap–Angkor Intl

Wed 10/21

4:00 pm-9:50 am

1 stop31h 50m

$794

San FranciscoSiem Reap

SFO - SAI

SFOSAI

San Francisco

Mon 9/14

12:00 pm-8:10 pm

2 stops42h 10m

Siem Reap–Angkor Intl

Wed 10/21

9:10 pm-9:05 am

2 stops25h 55m

$818

San FranciscoSiem Reap

SFO - SAI

SFOSAI

San Francisco

Thu 9/17

11:45 am-9:40 am

1 stop31h 55m

Siem Reap–Angkor Intl

Tue 10/20

10:30 am-9:50 am

1 stop37h 20m

$819

San FranciscoSiem Reap

SFO - SAI

SFOSAI

San Francisco

Sun 11/1

9:40 am-3:55 pm

1 stop39h 15m

Siem Reap–Angkor Intl

Fri 11/6

10:45 am-7:50 am

1 stop36h 05m

$839

San FranciscoSiem Reap

SFO - SAI

SFOSAI

San Francisco

Fri 11/6

9:40 am-3:55 pm

1 stop39h 15m

Siem Reap–Angkor Intl

Wed 11/18

10:45 am-7:50 am

1 stop36h 05m

$855

San FranciscoSiem Reap

SFO - SAI

SFOSAI

San Francisco

Mon 9/14

12:00 pm-8:10 pm

3 stops42h 10m

Siem Reap–Angkor Intl

Fri 10/23

9:10 pm-9:05 am

2 stops25h 55m

$868

San FranciscoSiem Reap

SFO - SAI

SFOSAI

San Francisco

Fri 9/4

11:45 am-9:40 am

1 stop31h 55m

Siem Reap–Angkor Intl

Sat 9/19

10:30 am-9:50 am

1 stop37h 20m

$924
Quickest round-trip

San FranciscoSiem Reap

SFO - SAI

SFOSAI

San Francisco

Wed 9/16

12:20 am-6:55 pm

2 stops28h 35m

Siem Reap–Angkor Intl

Tue 10/20

9:40 am-10:40 pm

2 stops27h 00m

$989

San FranciscoSiem Reap

SFO - SAI

SFOSAI

San Francisco

Thu 9/17

11:45 am-9:40 am

1 stop31h 55m

Siem Reap–Angkor Intl

Tue 10/20

10:30 am-10:43 am

2 stops38h 13m

$1,000

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 cheapest airline that flies from San Francisco to Siem Reap–Angkor Intl?

Vietnam Airlines is the most popular carrier operating from San Francisco to Siem Reap–Angkor Intl

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

24h 25m

Direct flights

None
The fastest flight from San Francisco to Siem Reap takes 24h 25m
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 24h 25m.

  • 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
1,511 reviews
Search Singapore Airlines flights
Vietnam AirlinesPriceFrom $647Free CancellationRating
7.7
267 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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