$497 Cheap Flights from Phnom Penh (PNH) to San Francisco (SFO)

View $497 flight on Sun, Oct 19, 2025Opens in a new window

Popular airlines from Phnom Penh Intl. Airport (PNH) to San Francisco Intl. Airport (SFO)

  • Plan, book, fly with confidence

  • trending down icon

    Be in the know

    Get alerts if flight prices drop or rise*
  • bex rewards loyalty icon

    Book smarter

    Save up to 30% on select hotels after you book a flight*
  • one key icon

    Earn twice

    Earn your airline miles on top of our OneKeyCash
    Learn about One Key

Cheap Flights from Phnom Penh to San Francisco (PNH-SFO)

Prices were available within the past 7 days and start at $497 for one-way flights and $718 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Korean Air
Mon, Sep 1 - Mon, Oct 13
PNH
Phnom Penh
SFO
San Francisco
$718 Roundtrip, found 7 hours ago
$718
Roundtrip
found 7 hours ago
Select Korean Air flight, departing Mon, Sep 1 from Phnom Penh to San Francisco, returning Mon, Oct 13, priced at $718 found 7 hours ago
Philippine Airlines
Wed, Aug 27 - Sun, Oct 12
PNH
Phnom Penh
SFO
San Francisco
$753 Roundtrip, found 7 hours ago
$753
Roundtrip
found 7 hours ago
Select Philippine Airlines flight, departing Wed, Aug 27 from Phnom Penh to San Francisco, returning Sun, Oct 12, priced at $753 found 7 hours ago
Singapore Airlines
Sat, Dec 27 - Sat, Jan 17
PNH
Phnom Penh
SFO
San Francisco
$812 Roundtrip, found 3 days ago
$812
Roundtrip
found 3 days ago
Select Singapore Airlines flight, departing Sat, Dec 27 from Phnom Penh to San Francisco, returning Sat, Jan 17, priced at $812 found 3 days ago
Asiana Airlines
Mon, Sep 1 - Thu, Sep 11
PNH
Phnom Penh
SFO
San Francisco
$838 Roundtrip, just found
$838
Roundtrip
just found
Select Asiana Airlines flight, departing Mon, Sep 1 from Phnom Penh to San Francisco, returning Thu, Sep 11, priced at $838 just found
Korean Air
Mon, Sep 1 - Thu, Sep 11
PNH
Phnom Penh
SFO
San Francisco
$942 Roundtrip, just found
$942
Roundtrip
just found
Select Korean Air flight, departing Mon, Sep 1 from Phnom Penh to San Francisco, returning Thu, Sep 11, priced at $942 just found
Cathay Pacific
Mon, Sep 1 - Thu, Sep 11
PNH
Phnom Penh
SFO
San Francisco
$947 Roundtrip, just found
$947
Roundtrip
just found
Select Cathay Pacific flight, departing Mon, Sep 1 from Phnom Penh to San Francisco, returning Thu, Sep 11, priced at $947 just found
Delta
Thu, Jan 15 - Fri, Jan 30
PNH
Phnom Penh
SFO
San Francisco
$953 Roundtrip, found 17 hours ago
$953
Roundtrip
found 17 hours ago
Select Delta flight, departing Thu, Jan 15 from Phnom Penh to San Francisco, returning Fri, Jan 30, priced at $953 found 17 hours ago
Vietnam Airlines
Sat, Jan 10 - Sat, Jan 24
PNH
Phnom Penh
SFO
San Francisco
$980 Roundtrip, found 17 hours ago
$980
Roundtrip
found 17 hours ago
Select Vietnam Airlines flight, departing Sat, Jan 10 from Phnom Penh to San Francisco, returning Sat, Jan 24, priced at $980 found 17 hours ago
China Eastern Airlines
Mon, Sep 1 - Thu, Sep 11
PNH
Phnom Penh
SFO
San Francisco
$1,050 Roundtrip, just found
$1,050
Roundtrip
just found
Select China Eastern Airlines flight, departing Mon, Sep 1 from Phnom Penh to San Francisco, returning Thu, Sep 11, priced at $1,050 just found
China Airlines
Mon, Sep 1 - Thu, Sep 11
PNH
Phnom Penh
SFO
San Francisco
$1,091 Roundtrip, just found
$1,091
Roundtrip
just found
Select China Airlines flight, departing Mon, Sep 1 from Phnom Penh to San Francisco, returning Thu, Sep 11, priced at $1,091 just found

Find the cheapest month to fly from Phnom Penh (PNH) to San Francisco (SFO)

October is typically the cheapest month to fly

From $743 - $1,138 per traveler.

Graph displaying average flight prices per month

Alternative airports near San Francisco

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to San Francisco Intl. SFO. Cheapest and Closest option available. Average driving time to city center is 19 minutes. Flights from $1,252
SFO
San Francisco Intl.
CheapestClosest
Average driving time to city center19 min
Flights from $1,252
Flights from Phnom Penh (PNH) to San Francisco (SFO)
Origin airport
Phnom Penh Intl.
Destination airport
San Francisco Intl.
Airlines serving
Air Canada, Asiana Airlines, British Airways, Cathay Pacific, China Airlines, China Eastern Airlines, China Southern Airlines, Delta, EVA Airways, Emirates, Etihad Airways, Korean Air, Lufthansa, Philippine Airlines, Qatar Airways, Singapore Airlines, Swiss International Air Lines, Turkish Airlines, Vietnam Airlines
Roundtrip price
$717
Distance
7867 mi

Phnom Penh to San Francisco Flights

The cheapest times to fly from Phnom Penh to San Francisco

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 Phnom Penh to San Francisco are during the month of September. You can find some of the cheapest flights from Phnom Penh to San Francisco with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Phnom Penh to San Francisco

Sunday is one of the best days to book for cheap flights from Phnom Penh to San Francisco: 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 Phnom Penh to San Francisco

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 Phnom Penh to San Francisco in 2025. You can also book with separate airlines for your outbound and return journeys, from $497 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 Phnom Penh to San Francisco 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 Phnom Penh to San Francisco 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.

 

Frequently asked questions

How much does a flight from Phnom Penh Intl. Airport (PNH) to San Francisco Intl. Airport (SFO) cost?
Discover the latest flight deals from PNH to SFO by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from PNH to SFO?
The cheapest flights from PNH to SFO are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
What is the cheapest airline that flies from PNH to SFO?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll take you from PNH to SFO. Sort your results by "Price (lowest to highest)" to snap up a great deal.
How many flights per day from Phnom Penh Intl. Airport (PNH) to San Francisco Intl. Airport (SFO)?
You'll need to book a flight with a layover when traveling from Phnom Penh Intl. Airport (PNH) to San Francisco Intl. Airport (SFO). There are no daily direct flights on this route. However, just filter your search to include one or more stops to find an option that works for you.
What day of the week has the most flights from PNH to SFO?
You'll generally find Tuesday the quietest day for flights, while Fridays tend to be the busiest.* However this can change from season to season and during peak travel times or public holidays.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Phnom Penh Intl. Airport (PNH) to San Francisco Intl. Airport (SFO)?
To land at San Francisco Intl. Airport (SFO) on schedule, opt for a flight that takes off from Phnom Penh Intl. Airport (PNH) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this time.**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 Phnom Penh Intl. Airport (PNH) to San Francisco Intl. Airport (SFO) last-minute?
Booking your ticket from PNH to SFO just before your getaway is usually more expensive. However, if there's some wiggle room with your departure dates and times, you could snag a cheap last-minute fare.
Is it cheaper to book a PNH to SFO flight and hotel package?
Compared with arranging hotels and flights separately, booking a PNH to SFO flight and hotel package with Expedia could lead to significant savings. What's more, having everything in one easy place takes the hassle out of travel planning. Just secure your flights and choose from our wide range of hotels, then customize your trip with other add-ons like car rentals and activities.
Can I cancel or change the date of my flight from Phnom Penh Intl. Airport (PNH) to San Francisco Intl. Airport (SFO)?
If you reserved your PNH to SFO flight within the last 24 hours, you may be able to cancel or modify it without fees. Depending on the airline and the ticket type you purchased, additional charges may apply for changes after that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal for more details.

Explore a world of travel with Expedia

*Available to One Key members.