$606 Cheap Flights from San Francisco (SFO) to Sihanoukville (KOS)

View $606 flight on Thu, Jan 8, 2026Opens in a new window

Popular airlines from San Francisco Intl. Airport (SFO) to Sihanoukville (KOS)

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Cheap Flights from San Francisco to Sihanoukville (SFO-KOS)

Prices were available within the past 7 days and start at $606 for one-way flights and $981 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Asiana Airlines
Wed, Mar 25 - Mon, Apr 6
SFO
San Francisco
KOS
Sihanoukville
$981 Roundtrip, found 5 days ago
$981
Roundtrip
found 5 days ago
Select Asiana Airlines flight, departing Wed, Mar 25 from San Francisco to Sihanoukville, returning Mon, Apr 6, priced at $981 found 5 days ago
Asiana Airlines
Sun, Mar 1 - Tue, Mar 17
SFO
San Francisco
KOS
Sihanoukville
$999 Roundtrip, found 5 days ago
$999
Roundtrip
found 5 days ago
Select Asiana Airlines flight, departing Sun, Mar 1 from San Francisco to Sihanoukville, returning Tue, Mar 17, priced at $999 found 5 days ago
Asiana Airlines
Wed, Mar 11 - Wed, Mar 25
SFO
San Francisco
KOS
Sihanoukville
$1,011 Roundtrip, found 5 days ago
$1,011
Roundtrip
found 5 days ago
Select Asiana Airlines flight, departing Wed, Mar 11 from San Francisco to Sihanoukville, returning Wed, Mar 25, priced at $1,011 found 5 days ago
Asiana Airlines
Tue, Mar 3 - Tue, Mar 17
SFO
San Francisco
KOS
Sihanoukville
$1,016 Roundtrip, found 5 days ago
$1,016
Roundtrip
found 5 days ago
Select Asiana Airlines flight, departing Tue, Mar 3 from San Francisco to Sihanoukville, returning Tue, Mar 17, priced at $1,016 found 5 days ago
Asiana Airlines
Sun, Mar 1 - Fri, Mar 20
SFO
San Francisco
KOS
Sihanoukville
$1,061 Roundtrip, found 5 days ago
$1,061
Roundtrip
found 5 days ago
Select Asiana Airlines flight, departing Sun, Mar 1 from San Francisco to Sihanoukville, returning Fri, Mar 20, priced at $1,061 found 5 days ago
Asiana Airlines
Tue, Mar 3 - Fri, Mar 20
SFO
San Francisco
KOS
Sihanoukville
$1,079 Roundtrip, found 5 days ago
$1,079
Roundtrip
found 5 days ago
Select Asiana Airlines flight, departing Tue, Mar 3 from San Francisco to Sihanoukville, returning Fri, Mar 20, priced at $1,079 found 5 days ago
China Eastern Airlines
Mon, Mar 16 - Wed, Apr 1
SFO
San Francisco
KOS
Sihanoukville
$1,095 Roundtrip, found 5 days ago
$1,095
Roundtrip
found 5 days ago
Select China Eastern Airlines flight, departing Mon, Mar 16 from San Francisco to Sihanoukville, returning Wed, Apr 1, priced at $1,095 found 5 days ago
Vietnam Airlines
Thu, Mar 12 - Thu, Mar 26
SFO
San Francisco
KOS
Sihanoukville
$1,239 Roundtrip, found 5 days ago
$1,239
Roundtrip
found 5 days ago
Select Vietnam Airlines flight, departing Thu, Mar 12 from San Francisco to Sihanoukville, returning Thu, Mar 26, priced at $1,239 found 5 days ago
EVA Airways
Wed, Dec 3 - Thu, Dec 18
SFO
San Francisco
KOS
Sihanoukville
$1,452 Roundtrip, found 1 day ago
$1,452
Roundtrip
found 1 day ago
Select EVA Airways flight, departing Wed, Dec 3 from San Francisco to Sihanoukville, returning Thu, Dec 18, priced at $1,452 found 1 day ago
Qatar Airways
Wed, Dec 3 - Thu, Dec 18
SFO
San Francisco
KOS
Sihanoukville
$2,012 Roundtrip, found 1 day ago
$2,012
Roundtrip
found 1 day ago
Select Qatar Airways flight, departing Wed, Dec 3 from San Francisco to Sihanoukville, returning Thu, Dec 18, priced at $2,012 found 1 day ago

Frequently asked questions

How much does a flight from San Francisco Intl. Airport (SFO) to Sihanoukville Airport (KOS) cost?
Lock in a cheap one-way flight from $606 or cheap return flight from $981 from San Francisco Intl. Airport (SFO) to Sihanoukville Airport (KOS) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from San Francisco Intl. Airport (SFO) to Sihanoukville Airport (KOS)?
Planning your trip for March can help you save, as it's the cheapest month for flights between SFO and KOS. You'll typically find the lowest fares during the off-season.
What is the cheapest airline that flies from San Francisco Intl. Airport (SFO) to Sihanoukville Airport (KOS)?
Expedia's filter tool lets you easily compare travel time, airlines and fares all in one place. Tailor the search to your trip, then sort by "Price (lowest to highest)" to find the carrier with the cheapest SFO to KOS flight.
How many flights per day from San Francisco Intl. Airport (SFO) to Sihanoukville Airport (KOS)?
Nonstop flights from San Francisco Intl. Airport (SFO) to Sihanoukville Airport (KOS) aren't available daily, so you'll need to take a flight with a layover. Explore your options with Expedia's filter tool. Enter your travel dates and pick either "1 Stop" or "2+ Stops."
What day of the week has the most flights from SFO to KOS?
Typically you'll have the most choice when it comes to flights on a Friday. Tuesdays are often the quietest.* But this can change based on the season, carrier and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from San Francisco Intl. Airport (SFO) to Sihanoukville Airport (KOS)?
To avoid possible delays on the San Francisco Intl. Airport (SFO) to Sihanoukville Airport (KOS) route, fly before 3 PM. Later flights are 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from San Francisco Intl. Airport (SFO) to Sihanoukville Airport (KOS) last-minute?
Booking your flight from SFO to KOS right before your journey is usually more expensive. But if there's some wiggle room with your departure times and dates, you could grab a cheap last-minute fare.
Is it cheaper to book a SFO to KOS flight and hotel package?
You'll generally save money by booking a SFO to KOS flight and hotel package compared to booking separately. In fact, travelers could save hundreds of dollars by bundling with Expedia. And it's easy to manage it all in one convenient place. After selecting your ideal flights and accommodations, consider other add-ons like tours, activities and car rentals.
Can I cancel or change the date of my flight from San Francisco Intl. Airport (SFO) to Sihanoukville Airport (KOS)?
In most cases, you can modify or cancel your SFO to KOS flight. However, there may be additional charges, especially if your booking was made more than 24 hours ago. Check your itinerary for the airline's policies and fees on flight changes, or if you'd like more details, go to our Customer Service portal.

Travel information

Origin airport
San Francisco Intl.
Destination airport
Sihanoukville
Roundtrip price
$981
Distance
7971 mi

Book with confidence

San Francisco to Sihanoukville Flights

The cheapest times to fly from San Francisco to Sihanoukville

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from San Francisco to Sihanoukville are during the month of March. You can find some of the cheapest flights from San Francisco to Sihanoukville with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from San Francisco to Sihanoukville

Sunday is one of the best days to book for cheap flights from San Francisco to Sihanoukville: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from San Francisco to Sihanoukville

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from San Francisco to Sihanoukville in 2025. You can also book with separate airlines for your outbound and return journeys, from $606 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap San Francisco to Sihanoukville flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your San Francisco to Sihanoukville airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

San Francisco to Sihanoukville Flights

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*Available to One Key members.