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Cheap flights from San Francisco to Siem Reap from $359

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 4/28. 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
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
11:00 am - 9:40 am
SFO
-
SAI
32h 40m
1 stop
Singapore Airlines Logo
10:30 am - 9:10 am
SAI
-
SFO
36h 40m
1 stop
$613Singapore Airlines
Thu, Apr 30 - Thu, May 14
Vietnam Airlines Logo
10:50 pm - 6:40 pm
SFO
-
SAI
29h 50m
1 stop
Vietnam Airlines Logo
7:40 pm - 5:55 pm
SAI
-
SFO
36h 15m
1 stop
$797Vietnam Airlines
Wed, Apr 1 - Wed, Apr 8
Vietnam Airlines Logo
10:50 pm - 6:40 pm
SFO
-
SAI
29h 50m
1 stop
Vietnam Airlines Logo
7:40 pm - 5:55 pm
SAI
-
SFO
36h 15m
1 stop
$811Vietnam Airlines
Sat, Apr 4 - Tue, Apr 14
Vietnam Airlines Logo
10:50 pm - 6:40 pm
SFO
-
SAI
29h 50m
1 stop
Vietnam Airlines Logo
7:40 pm - 5:55 pm
SAI
-
SFO
36h 15m
1 stop
$812Vietnam Airlines
Sun, Apr 5 - Tue, Apr 14
Singapore Airlines Logo
11:00 am - 3:10 pm
SFO
-
SAI
38h 10m
1 stop
Singapore Airlines Logo
10:30 am - 9:10 am
SAI
-
SFO
36h 40m
1 stop
$837Singapore Airlines
Wed, Apr 1 - Thu, Apr 30
Singapore Airlines Logo
11:00 am - 3:10 pm
SFO
-
SAI
38h 10m
1 stop
Singapore Airlines Logo
10:30 am - 9:10 am
SAI
-
SFO
36h 40m
1 stop
$852Singapore Airlines
Wed, Apr 1 - Thu, Apr 30
Singapore Airlines Logo
11:00 am - 9:40 am
SFO
-
SAI
32h 40m
1 stop
Singapore Airlines Logo
10:30 am - 7:27 am
SAI
-
SFO
34h 57m
2 stops
$861Singapore Airlines
Thu, Apr 30 - Thu, May 14
Multiple Airlines Logo
10:57 am - 9:40 am
SFO
-
SAI
32h 43m
3 stops
Multiple Airlines Logo
10:30 am - 9:10 am
SAI
-
SFO
36h 40m
1 stop
$878Multiple Airlines
Tue, May 19 - Mon, May 25
Vietnam Airlines Logo
10:50 pm - 6:40 pm
SFO
-
SAI
29h 50m
1 stop
Vietnam Airlines Logo
7:40 pm - 5:55 pm
SAI
-
SFO
36h 15m
1 stop
$879Vietnam Airlines
Thu, Apr 2 - Tue, Apr 14
Multiple Airlines Logo
11:00 am - 3:10 pm
SFO
-
SAI
38h 10m
1 stop
Multiple Airlines Logo
10:30 am - 7:40 am
SAI
-
SFO
35h 10m
2 stops
$893Multiple Airlines
Wed, Apr 1 - Thu, Apr 30

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
Apr 1
SFO10:50 pmSan Francisco
29h 50m
1 stop
SAI6:40 pmSiem Reap–Angkor Intl
Apr 8
SAI7:40 pmSiem Reap–Angkor Intl
36h 15m
1 stop
SFO5:55 pmSan Francisco
$797
Vietnam Airlines
Apr 4
SFO10:50 pmSan Francisco
29h 50m
1 stop
SAI6:40 pmSiem Reap–Angkor Intl
Apr 14
SAI7:40 pmSiem Reap–Angkor Intl
36h 15m
1 stop
SFO5:55 pmSan Francisco
$811
Vietnam Airlines
Apr 5
SFO10:50 pmSan Francisco
29h 50m
1 stop
SAI6:40 pmSiem Reap–Angkor Intl
Apr 14
SAI7:40 pmSiem Reap–Angkor Intl
36h 15m
1 stop
SFO5:55 pmSan Francisco
$812

China Eastern flights from San Francisco to Region of Siem Reap

Our best China Eastern deals on San Francisco to Region of Siem Reap flight tickets
China Eastern
Apr 4
SFO12:00 pmSan Francisco
42h 10m
2 stops
SAI8:10 pmSiem Reap–Angkor Intl
Apr 8
SAI9:10 pmSiem Reap–Angkor Intl
25h 55m
2 stops
SFO9:05 amSan Francisco
$902
China Eastern
May 18
SFO12:00 pmSan Francisco
42h 10m
3 stops
SAI8:10 pmSiem Reap–Angkor Intl
May 22
SAI9:10 pmSiem Reap–Angkor Intl
25h 55m
2 stops
SFO9:05 amSan Francisco
$1,037

momondo Fare Finder

 
Customize your flight search to find flights from San Francisco to Region of 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 February 7, 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

San FranciscoSiem Reap

SFO - SAI

SFOSAI

San Francisco

Thu 4/30

11:00 am-9:40 am

1 stop32h 40m

Siem Reap–Angkor Intl

Thu 5/14

10:30 am-9:10 am

1 stop36h 40m

$613

San FranciscoSiem Reap

SFO - SAI

SFOSAI

San Francisco

Wed 4/1

10:50 pm-6:40 pm

1 stop29h 50m

Siem Reap–Angkor Intl

Wed 4/8

7:40 pm-5:55 pm

1 stop36h 15m

$797

San FranciscoSiem Reap

SFO - SAI

SFOSAI

San Francisco

Sat 4/4

10:50 pm-6:40 pm

1 stop29h 50m

Siem Reap–Angkor Intl

Tue 4/14

7:40 pm-5:55 pm

1 stop36h 15m

$811

San FranciscoSiem Reap

SFO - SAI

SFOSAI

San Francisco

Sun 4/5

10:50 pm-6:40 pm

1 stop29h 50m

Siem Reap–Angkor Intl

Tue 4/14

7:40 pm-5:55 pm

1 stop36h 15m

$812

San FranciscoSiem Reap

SFO - SAI

SFOSAI

San Francisco

Wed 4/1

11:00 am-3:10 pm

1 stop38h 10m

Siem Reap–Angkor Intl

Thu 4/30

10:30 am-9:10 am

1 stop36h 40m

$837

San FranciscoSiem Reap

SFO - SAI

SFOSAI

San Francisco

Wed 4/1

11:00 am-3:10 pm

1 stop38h 10m

Siem Reap–Angkor Intl

Thu 4/30

10:30 am-9:10 am

1 stop36h 40m

$852

San FranciscoSiem Reap

SFO - SAI

SFOSAI

San Francisco

Thu 4/30

11:00 am-9:40 am

1 stop32h 40m

Siem Reap–Angkor Intl

Thu 5/14

10:30 am-7:27 am

2 stops34h 57m

$861

San FranciscoSiem Reap

SFO - SAI

SFOSAI

San Francisco

Tue 5/19

10:57 am-9:40 am

3 stops32h 43m

Siem Reap–Angkor Intl

Mon 5/25

10:30 am-9:10 am

1 stop36h 40m

$878

San FranciscoSiem Reap

SFO - SAI

SFOSAI

San Francisco

Thu 4/2

10:50 pm-6:40 pm

1 stop29h 50m

Siem Reap–Angkor Intl

Tue 4/14

7:40 pm-5:55 pm

1 stop36h 15m

$879

San FranciscoSiem Reap

SFO - SAI

SFOSAI

San Francisco

Wed 4/1

11:00 am-3:10 pm

1 stop38h 10m

Siem Reap–Angkor Intl

Thu 4/30

10:30 am-7:40 am

2 stops35h 10m

$893

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 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 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

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

Singapore Airlines is the most popular carrier operating from San Francisco to Siem Reap

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

Fastest flight time

29h 50m

Direct flights

None
The fastest flight from San Francisco to Region of Siem Reap takes 29h 50m
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

  • 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?

  • 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 AirlinesPriceFrom $628Free CancellationRating
8.2
1,451 reviews
Search Singapore Airlines flights
Vietnam AirlinesPriceFrom $789Free CancellationRating
7.6
224 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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