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Cheap flights from San Francisco to Siem Reap from $323

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 4/8. 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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Cheap round-trip flights

Enter your travel dates to find the best prices.
China Eastern Logo
12:00 pm - 9:00 pm
SFO
-
SAI
42h 00m
2 stops
China Eastern Logo
10:00 pm - 10:00 am
SAI
-
SFO
50h 00m
2 stops
$787China Eastern
Thu, Mar 5 - Thu, Mar 12
Multiple Airlines Logo
11:25 am - 9:15 am
SFO
-
SAI
30h 50m
2 stops
Multiple Airlines Logo
9:55 am - 10:15 pm
SAI
-
SFO
26h 20m
2 stops
$812Multiple Airlines
Wed, Mar 4 - Fri, Mar 13
Multiple Airlines Logo
1:00 pm - 9:00 am
SFO
-
SAI
30h 00m
2 stops
Multiple Airlines Logo
12:55 pm - 10:40 pm
SAI
-
SFO
23h 45m
2 stops
$813Multiple Airlines
Thu, Apr 30 - Thu, May 14
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
$820Singapore Airlines
Thu, Apr 30 - Thu, May 14
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
$832Singapore Airlines
Thu, Apr 30 - Thu, May 14
Multiple Airlines Logo
11:00 am - 9:40 am
SFO
-
SAI
32h 40m
1 stop
Multiple Airlines Logo
10:30 am - 9:30 am
SAI
-
SFO
37h 00m
2 stops
$836Multiple Airlines
Thu, Apr 30 - Thu, May 14
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
$838Singapore Airlines
Thu, Apr 30 - Thu, May 14
Multiple Airlines Logo
11:00 am - 9:40 am
SFO
-
SAI
32h 40m
1 stop
Multiple Airlines Logo
10:30 am - 9:30 am
SAI
-
SFO
37h 00m
2 stops
$850Multiple Airlines
Thu, Apr 30 - Thu, May 14
Multiple Airlines Logo
11:00 am - 9:40 am
SFO
-
SAI
32h 40m
1 stop
Multiple Airlines Logo
10:30 am - 7:27 am
SAI
-
SFO
34h 57m
2 stops
$852Multiple Airlines
Thu, Apr 30 - Thu, May 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
$901Multiple Airlines
Wed, Apr 1 - Thu, Apr 30

Singapore Airlines flights from San Francisco to Siem Reap

Our best Singapore Airlines deals on San Francisco to Siem Reap flight tickets
Singapore Airlines
Apr 30
SFO11:00 amSan Francisco
32h 40m
1 stop
SAI9:40 amSiem Reap–Angkor Intl
May 14
SAI10:30 amSiem Reap–Angkor Intl
36h 40m
1 stop
SFO9:10 amSan Francisco
$832
Singapore Airlines
Apr 30
SFO11:00 amSan Francisco
32h 40m
1 stop
SAI9:40 amSiem Reap–Angkor Intl
May 14
SAI10:30 amSiem Reap–Angkor Intl
36h 40m
1 stop
SFO9:10 amSan Francisco
$838
Singapore Airlines
Mar 13
SFO10:40 amSan Francisco
33h 10m
1 stop
SAI9:50 amSiem Reap–Angkor Intl
Mar 18
SAI10:45 amSiem Reap–Angkor Intl
36h 05m
1 stop
SFO8:50 amSan Francisco
$1,125

Vietnam Airlines flights from San Francisco to Siem Reap

Our best Vietnam Airlines deals on San Francisco to Siem Reap flight tickets
Vietnam Airlines
Apr 30
SFO10:50 pmSan Francisco
29h 50m
1 stop
SAI6:40 pmSiem Reap–Angkor Intl
May 14
SAI5:20 pmSiem Reap–Angkor Intl
62h 35m
3 stops
SFO5:55 pmSan Francisco
$951
Vietnam Airlines
Apr 30
SFO10:50 pmSan Francisco
29h 50m
1 stop
SAI6:40 pmSiem Reap–Angkor Intl
May 14
SAI5:20 pmSiem Reap–Angkor Intl
62h 35m
3 stops
SFO5:55 pmSan Francisco
$974
Vietnam Airlines
Apr 30
SFO10:50 pmSan Francisco
27h 35m
3 stops
SAI4:25 pmSiem Reap–Angkor Intl
May 14
SAI6:05 pmSiem Reap–Angkor Intl
61h 50m
2 stops
SFO5:55 pmSan Francisco
$1,026

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 February 14, 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 3/5

12:00 pm-9:00 pm

2 stops42h 00m

Siem Reap–Angkor Intl

Thu 3/12

10:00 pm-10:00 am

2 stops50h 00m

$787

San FranciscoSiem Reap

SFO - SAI

SFOSAI

San Francisco

Wed 3/4

11:25 am-9:15 am

2 stops30h 50m

Siem Reap–Angkor Intl

Fri 3/13

9:55 am-10:15 pm

2 stops26h 20m

$812

San FranciscoSiem Reap

SFO - SAI

SFOSAI

San Francisco

Thu 4/30

1:00 pm-9:00 am

2 stops30h 00m

Siem Reap–Angkor Intl

Thu 5/14

12:55 pm-10:40 pm

2 stops23h 45m

$813

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

$820

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

$832

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-9:30 am

2 stops37h 00m

$836

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

$838

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-9:30 am

2 stops37h 00m

$850

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

$852

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

$901

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?

Singapore Airlines and Vietnam Airlines are the most popular carriers 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

31h 15m

Direct flights

None
The fastest flight from San Francisco to Siem Reap takes 31h 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 7798.8 mi. A reasonable flight in good conditions will take 31h 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 $628Free CancellationRating
8.2
1,452 reviews
Search Singapore Airlines flights
Vietnam AirlinesPriceFrom $789Free CancellationRating
7.6
227 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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