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Cheap flights from San Francisco to Siem Reap from $315

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 8/29. 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.
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
Multiple Airlines Logo
12:25 am - 6:45 pm
SFO
-
SAI
28h 20m
2 stops
Multiple Airlines Logo
9:45 am - 8:10 pm
SAI
-
SFO
24h 25m
2 stops
$1,043Multiple Airlines
Sun, Apr 12 - Wed, May 13
Multiple Airlines Logo
12:50 am - 6:45 pm
SFO
-
SAI
27h 55m
2 stops
Multiple Airlines Logo
9:45 am - 8:10 pm
SAI
-
SFO
24h 25m
2 stops
$1,081Multiple Airlines
Tue, Apr 21 - Sat, May 2
Vietnam Airlines Logo
10:50 pm - 5:10 pm
SFO
-
SAI
28h 20m
2 stops
Vietnam Airlines Logo
7:10 pm - 5:55 pm
SAI
-
SFO
36h 45m
1 stop
$1,108Vietnam Airlines
Wed, Apr 22 - Sat, May 2
Multiple Airlines Logo
12:25 am - 4:25 pm
SFO
-
SAI
26h 00m
3 stops
Multiple Airlines Logo
1:05 pm - 6:45 am
SAI
-
SFO
31h 40m
2 stops
$1,124Multiple Airlines
Tue, Apr 21 - Sat, May 2
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
Multiple Airlines Logo
10:50 pm - 8:45 am
SFO
-
SAI
19h 55m
1 stop
Multiple Airlines Logo
7:10 pm - 5:55 pm
SAI
-
SFO
36h 45m
1 stop
$1,239Multiple Airlines
Wed, Apr 22 - Sat, May 2
Multiple Airlines Logo
12:00 pm - 8:10 pm
SFO
-
SAI
42h 10m
3 stops
Multiple Airlines Logo
9:45 am - 7:55 pm
SAI
-
SFO
24h 10m
2 stops
$1,291Multiple Airlines
Mon, Apr 13 - Wed, May 13

Emirates flights from San Francisco to Region of Siem Reap

Our best Emirates deals on San Francisco to Region of Siem Reap flight tickets
Emirates
Mar 29
SFO5:05 pmSan Francisco
38h 25m
2 stops
SAI9:30 pmSiem Reap–Angkor Intl
Apr 16
SAI11:50 pmSiem Reap–Angkor Intl
52h 10m
2 stops
SFO2:00 pmSan Francisco
$1,358
Emirates
Mar 29
SFO5:05 pmSan Francisco
38h 25m
2 stops
SAI9:30 pmSiem Reap–Angkor Intl
Apr 22
SAI1:05 pmSiem Reap–Angkor Intl
38h 55m
2 stops
SFO2:00 pmSan Francisco
$1,385
Emirates
Mar 29
SFO5:05 pmSan Francisco
38h 25m
2 stops
SAI9:30 pmSiem Reap–Angkor Intl
Apr 18
SAI11:50 pmSiem Reap–Angkor Intl
52h 10m
2 stops
SFO2:00 pmSan Francisco
$1,408

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 22
SFO10:50 pmSan Francisco
28h 20m
2 stops
SAI5:10 pmSiem Reap–Angkor Intl
May 2
SAI7:10 pmSiem Reap–Angkor Intl
36h 45m
1 stop
SFO5:55 pmSan Francisco
$1,108
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
$1,629
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

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 March 24, 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 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
Quickest round-trip

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

Sun 4/12

12:25 am-6:45 pm

2 stops28h 20m

Siem Reap–Angkor Intl

Wed 5/13

9:45 am-8:10 pm

2 stops24h 25m

$1,043

San FranciscoSiem Reap

SFO - SAI

SFOSAI

San Francisco

Tue 4/21

12:50 am-6:45 pm

2 stops27h 55m

Siem Reap–Angkor Intl

Sat 5/2

9:45 am-8:10 pm

2 stops24h 25m

$1,081

San FranciscoSiem Reap

SFO - SAI

SFOSAI

San Francisco

Wed 4/22

10:50 pm-5:10 pm

2 stops28h 20m

Siem Reap–Angkor Intl

Sat 5/2

7:10 pm-5:55 pm

1 stop36h 45m

$1,108

San FranciscoSiem Reap

SFO - SAI

SFOSAI

San Francisco

Tue 4/21

12:25 am-4:25 pm

3 stops26h 00m

Siem Reap–Angkor Intl

Sat 5/2

1:05 pm-6:45 am

2 stops31h 40m

$1,124

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

San FranciscoSiem Reap

SFO - SAI

SFOSAI

San Francisco

Wed 4/22

10:50 pm-8:45 am

1 stop19h 55m

Siem Reap–Angkor Intl

Sat 5/2

7:10 pm-5:55 pm

1 stop36h 45m

$1,239

San FranciscoSiem Reap

SFO - SAI

SFOSAI

San Francisco

Mon 4/13

12:00 pm-8:10 pm

3 stops42h 10m

Siem Reap–Angkor Intl

Wed 5/13

9:45 am-7:55 pm

2 stops24h 10m

$1,291

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 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

27h 55m

Direct flights

None
The fastest flight from San Francisco to Region of Siem Reap takes 27h 55m
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 $599Free CancellationRating
8.2
1,484 reviews
Search Singapore Airlines flights
Vietnam AirlinesPriceFrom $677Free CancellationRating
7.7
246 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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