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Cheap flights from San Francisco to Siem Reap from $445

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 11/11. 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

Find the cheapest flights from San Francisco to Siem Reap

Cheap round-trip flights

Enter your travel dates to find the best prices.
Vietnam Airlines Logo
10:50 pm - 6:20 pmSFO  San Francisco-SAI Siem Reap–Angkor Intl
29h 30m1 stop Ho Chi Minh City
Vietnam Airlines Logo
7:10 pm - 5:55 pmSAI  Siem Reap–Angkor Intl-SFO San Francisco
36h 45m1 stop Ho Chi Minh City
$759Vietnam Airlines
Wed, Sep 16 - Wed, Sep 23
Vietnam Airlines Logo
9:10 pm - 5:40 pmSFO  San Francisco-SAI Siem Reap–Angkor Intl
29h 30m1 stop Ho Chi Minh City
Vietnam Airlines Logo
9:30 pm - 5:00 pmSAI  Siem Reap–Angkor Intl-SFO San Francisco
34h 30m1 stop Ho Chi Minh City
$798Vietnam Airlines
Thu, Nov 5 - Sat, Nov 14
China Eastern Logo
12:00 pm - 9:00 pmSFO  San Francisco-SAI Siem Reap–Angkor Intl
42h 00m2 stops Shanghai Pu Dong Kunming Changshui
China Eastern Logo
10:00 pm - 9:00 amSAI  Siem Reap–Angkor Intl-SFO San Francisco
50h 00m2 stops Kunming Changshui Shanghai Pu Dong
$818China Eastern
Thu, Nov 12 - Tue, Dec 1
China Eastern Logo
12:00 pm - 9:00 pmSFO  San Francisco-SAI Siem Reap–Angkor Intl
42h 00m3 stops Shanghai Pu Dong Fuzhou Kunming Changshui
China Eastern Logo
10:00 pm - 9:00 amSAI  Siem Reap–Angkor Intl-SFO San Francisco
50h 00m3 stops Kunming Changshui Fuzhou Shanghai Pu Dong
$818China Eastern
Thu, Nov 12 - Tue, Dec 1
China Eastern Logo
12:00 pm - 9:00 pmSFO  San Francisco-SAI Siem Reap–Angkor Intl
42h 00m2 stops Shanghai Pu Dong Kunming Changshui
China Eastern Logo
10:00 pm - 9:00 amSAI  Siem Reap–Angkor Intl-SFO San Francisco
50h 00m3 stops Kunming Changshui Fuzhou Shanghai Pu Dong
$818China Eastern
Thu, Nov 12 - Tue, Dec 1
Singapore Airlines Logo
9:40 am - 3:55 pmSFO  San Francisco-SAI Siem Reap–Angkor Intl
39h 15m1 stop Singapore Changi
Singapore Airlines Logo
4:45 pm - 7:50 amSAI  Siem Reap–Angkor Intl-SFO San Francisco
30h 05m1 stop Singapore Changi
$831Singapore Airlines
Tue, Nov 3 - Wed, Nov 11
Singapore Airlines Logo
9:40 am - 3:55 pmSFO  San Francisco-SAI Siem Reap–Angkor Intl
39h 15m1 stop Singapore Changi
Singapore Airlines Logo
10:45 am - 7:50 amSAI  Siem Reap–Angkor Intl-SFO San Francisco
36h 05m1 stop Singapore Changi
$831Singapore Airlines
Mon, Nov 2 - Wed, Nov 11
Singapore Airlines Logo
9:40 am - 3:55 pmSFO  San Francisco-SAI Siem Reap–Angkor Intl
39h 15m1 stop Singapore Changi
Singapore Airlines Logo
4:45 pm - 7:50 amSAI  Siem Reap–Angkor Intl-SFO San Francisco
30h 05m1 stop Singapore Changi
$832Singapore Airlines
Tue, Nov 3 - Wed, Nov 11
Vietnam Airlines Logo
9:10 pm - 5:40 pmSFO  San Francisco-SAI Siem Reap–Angkor Intl
29h 30m1 stop Ho Chi Minh City
Vietnam Airlines Logo
9:30 pm - 5:00 pmSAI  Siem Reap–Angkor Intl-SFO San Francisco
34h 30m1 stop Ho Chi Minh City
$853Vietnam Airlines
Wed, Nov 11 - Wed, Dec 2
Vietnam Airlines Logo
9:10 pm - 8:30 pmSFO  San Francisco-SAI Siem Reap–Angkor Intl
32h 20m1 stop Ho Chi Minh City
Vietnam Airlines Logo
9:30 pm - 5:00 pmSAI  Siem Reap–Angkor Intl-SFO San Francisco
34h 30m1 stop Ho Chi Minh City
$853Vietnam Airlines
Wed, Nov 11 - Tue, Dec 1

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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
Nov 12
SFO12:00 pmSan Francisco
42h 00m
2 stops
SAI9:00 pmSiem Reap–Angkor Intl
Dec 1
SAI10:00 pmSiem Reap–Angkor Intl
50h 00m
2 stops
SFO9:00 amSan Francisco
$818
China Eastern
Oct 19
SFO12:00 pmSan Francisco
42h 10m
2 stops
SAI8:10 pmSiem Reap–Angkor Intl
Nov 7
SAI10:00 pmSiem Reap–Angkor Intl
50h 00m
2 stops
SFO9:00 amSan Francisco
$819
China Eastern
Nov 5
SFO12:00 pmSan Francisco
42h 00m
3 stops
SAI9:00 pmSiem Reap–Angkor Intl
Nov 14
SAI10:00 pmSiem Reap–Angkor Intl
50h 00m
3 stops
SFO9:00 amSan Francisco
$863

Singapore Airlines flights from San Francisco to Region of Siem Reap

Our best Singapore Airlines deals on San Francisco to Region of Siem Reap flight tickets
Singapore Airlines
Nov 2
SFO9:40 amSan Francisco
39h 15m
1 stop
SAI3:55 pmSiem Reap–Angkor Intl
Nov 11
SAI10:45 amSiem Reap–Angkor Intl
36h 05m
1 stop
SFO7:50 amSan Francisco
$831
Singapore Airlines
Nov 2
SFO9:40 amSan Francisco
39h 15m
1 stop
SAI3:55 pmSiem Reap–Angkor Intl
Nov 11
SAI10:45 amSiem Reap–Angkor Intl
36h 05m
1 stop
SFO7:50 amSan Francisco
$832
Singapore Airlines
Nov 2
SFO9:40 amSan Francisco
39h 15m
1 stop
SAI3:55 pmSiem Reap–Angkor Intl
Nov 11
SAI10:45 amSiem Reap–Angkor Intl
36h 05m
1 stop
SFO7:50 amSan Francisco
$848

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 August 5, 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 San Francisco - SAI Siem Reap–Angkor Intl

SFOSAI

San Francisco

Wed 9/16

10:50 pm-6:20 pm

1 stop29h 30m

Siem Reap–Angkor Intl

Wed 9/23

7:10 pm-5:55 pm

1 stop36h 45m

$759
Quickest round-trip

San FranciscoSiem Reap

SFO San Francisco - SAI Siem Reap–Angkor Intl

SFOSAI

San Francisco

Thu 11/5

9:10 pm-5:40 pm

1 stop29h 30m

Siem Reap–Angkor Intl

Sat 11/14

9:30 pm-5:00 pm

1 stop34h 30m

$798

San FranciscoSiem Reap

SFO San Francisco - SAI Siem Reap–Angkor Intl

SFOSAI

San Francisco

Thu 11/12

12:00 pm-9:00 pm

2 stops42h 00m

Siem Reap–Angkor Intl

Tue 12/1

10:00 pm-9:00 am

2 stops50h 00m

$818

San FranciscoSiem Reap

SFO San Francisco - SAI Siem Reap–Angkor Intl

SFOSAI

San Francisco

Thu 11/12

12:00 pm-9:00 pm

3 stops42h 00m

Siem Reap–Angkor Intl

Tue 12/1

10:00 pm-9:00 am

3 stops50h 00m

$818

San FranciscoSiem Reap

SFO San Francisco - SAI Siem Reap–Angkor Intl

SFOSAI

San Francisco

Thu 11/12

12:00 pm-9:00 pm

2 stops42h 00m

Siem Reap–Angkor Intl

Tue 12/1

10:00 pm-9:00 am

3 stops50h 00m

$818

San FranciscoSiem Reap

SFO San Francisco - SAI Siem Reap–Angkor Intl

SFOSAI

San Francisco

Tue 11/3

9:40 am-3:55 pm

1 stop39h 15m

Siem Reap–Angkor Intl

Wed 11/11

4:45 pm-7:50 am

1 stop30h 05m

$831

San FranciscoSiem Reap

SFO San Francisco - SAI Siem Reap–Angkor Intl

SFOSAI

San Francisco

Mon 11/2

9:40 am-3:55 pm

1 stop39h 15m

Siem Reap–Angkor Intl

Wed 11/11

10:45 am-7:50 am

1 stop36h 05m

$831

San FranciscoSiem Reap

SFO San Francisco - SAI Siem Reap–Angkor Intl

SFOSAI

San Francisco

Tue 11/3

9:40 am-3:55 pm

1 stop39h 15m

Siem Reap–Angkor Intl

Wed 11/11

4:45 pm-7:50 am

1 stop30h 05m

$832

San FranciscoSiem Reap

SFO San Francisco - SAI Siem Reap–Angkor Intl

SFOSAI

San Francisco

Wed 11/11

9:10 pm-5:40 pm

1 stop29h 30m

Siem Reap–Angkor Intl

Wed 12/2

9:30 pm-5:00 pm

1 stop34h 30m

$853

San FranciscoSiem Reap

SFO San Francisco - SAI Siem Reap–Angkor Intl

SFOSAI

San Francisco

Wed 11/11

9:10 pm-8:30 pm

1 stop32h 20m

Siem Reap–Angkor Intl

Tue 12/1

9:30 pm-5:00 pm

1 stop34h 30m

$853

Flights are sorted by cheapest round-trip flights first.

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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 month to fly to Region of Siem Reap?

The month of June is another great option to travel to Region of Siem Reap, with average flight prices from San Francisco averaging around $0.

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 45m

Direct flights

None
The fastest flight from San Francisco to Region of Siem Reap takes 27h 45m
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.
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Frequently asked questions about flying from San Francisco to Siem Reap

  • 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
1,584 reviews
Search Singapore Airlines flights
Vietnam AirlinesPriceFrom $647Free CancellationRating
7.7
283 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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