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Phnom Penh

$417+ Cheap flights from Riverside, CA to Phnom Penh (PNH)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/27. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — PNH
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
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Cheapflights Tip: The best prices from Riverside to Phnom Penh Pochentong are usually found in March or February, booked 63 days in advance, depart on a Monday or Friday and return on a Wednesday

Cheap flight deals from Riverside to Phnom Penh

Keep the following information in mind while searching for Riverside to Phnom Penh flight deals. Data was last updated June 12, 2025.

Round-trip from

$914
(SmartFares)

One-way from

$417
(Asiana Airlines)

Popular in

June

Cheapest in

March

Average price

$1,456
From Riverside to Phnom Penh Pochentong
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One-way flight from Riverside to Phnom Penh Pochentong
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Highest demand for flights based on searches. 18% potential increase in price ($232 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($37 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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Find flight deals from Riverside to Phnom Penh

Cheapest flights from Riverside to Phnom Penh
Explore the most affordable flight options available from Riverside to Phnom Penh. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.

This SmartFares deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/1211:55 pmLAX - PNH
1 stop34h 20mPhilippine Airlines
Sat 8/161:15 amPNH - LAX
1 stop33h 25mPhilippine Airlines
Deal found 6/9$914
This Gurufare deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/2212:30 pmLAX - PNH
1 stop20h 45mChina Eastern
Sat 8/3012:10 amPNH - LAX
1 stop23h 55mChina Eastern
Deal found 6/11$916
This Korean Air deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/38:25 pmLAX - PNH
2 stops35h 45mKorean Air
Thu 10/3011:45 pmPNH - LAX
2 stops29h 08mKorean Air
Deal found 6/10$917
This FlightHub deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/1511:00 pmLAX - PNH
1 stop33h 55mMultiple Airlines
Sun 8/318:20 amPNH - LAX
2 stops22h 10mMultiple Airlines
Deal found 6/12$918
This Cathay Pacific deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/2412:30 amLAX - PNH
1 stop19h 45mCathay Pacific
Sat 11/87:05 pmPNH - LAX
1 stop29h 00mCathay Pacific
Deal found 6/11$920
This China Airlines deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/412:05 amLAX - PNH
1 stop26h 00mChina Airlines
Fri 11/711:35 amPNH - LAX
1 stop23h 00mChina Airlines
Deal found 6/12$949
This oojo deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/31:25 amLAX - PNH
1 stop19h 50mEVA Air
Sun 9/1412:35 pmPNH - LAX
1 stop32h 45mEVA Air
Deal found 6/12$970
This Asiana Airlines deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Asiana Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/511:00 pmLAX - PNH
1 stop33h 55mAsiana Airlines
Wed 7/1611:55 pmPNH - LAX
1 stop30h 35mAsiana Airlines
Deal found 6/10$980
This FlightHub deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/3010:05 pmLAX - PNH
1 stop43h 30mSingapore Airlines
Fri 1/169:35 amPNH - LAX
2 stops40h 40mSingapore Airlines
Deal found 6/10$987
This Air China deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air China is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/189:00 pmLAX - PNH
2 stops35h 10mAir China
Wed 12/312:25 amPNH - LAX
1 stop33h 35mAir China
Deal found 6/10$1,000
This KAYAK deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/3111:55 pmLAX - PNH
2 stops44h 55mXiamenAir
Thu 9/1812:20 pmPNH - LAX
1 stop21h 40mXiamenAir
Deal found 6/10$1,088

Cheapflights Fare Finder

Customize your flight search to find flights from Riverside to Phnom Penh 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, Cheapflights users made 2,558,603 searches. Data last updated June 12, 2025.
Use the filters below to find and compare flights from Riverside to Phnom Penh that are best for you.

Fly from

Riverside

Fly to

Phnom Penh

Route

Depart

Return

Price

Los AngelesPhnom Penh

LAX - PNH

LAXPNH

Los Angeles

Tue 8/12

11:55 pm-12:15 am

1 stop34h 20m

Phnom Penh Pochentong

Sat 8/16

1:15 am-8:40 pm

1 stop33h 25m

$914

Los AngelesPhnom Penh

LAX - PNH

LAXPNH

Los Angeles

Tue 7/22

12:30 pm-11:15 pm

1 stop20h 45m

Phnom Penh Pochentong

Sat 8/30

12:10 am-10:05 am

1 stop23h 55m

$916

Los AngelesPhnom Penh

LAX - PNH

LAXPNH

Los Angeles

Fri 10/3

8:25 pm-10:10 pm

2 stops35h 45m

Phnom Penh Pochentong

Thu 10/30

11:45 pm-2:53 pm

2 stops29h 08m

$917

Los AngelesPhnom Penh

LAX - PNH

LAXPNH

Los Angeles

Tue 7/15

11:00 pm-10:55 pm

1 stop33h 55m

Phnom Penh Pochentong

Sun 8/31

8:20 am-4:30 pm

2 stops22h 10m

$918

Los AngelesPhnom Penh

LAX - PNH

LAXPNH

Los Angeles

Wed 9/24

12:30 am-10:15 am

1 stop19h 45m

Phnom Penh Pochentong

Sat 11/8

7:05 pm-9:05 am

1 stop29h 00m

$920

Los AngelesPhnom Penh

LAX - PNH

LAXPNH

Los Angeles

Sat 10/4

12:05 am-4:05 pm

1 stop26h 00m

Phnom Penh Pochentong

Fri 11/7

11:35 am-7:35 pm

1 stop23h 00m

$949

Los AngelesPhnom Penh

LAX - PNH

LAXPNH

Los Angeles

Sun 8/3

1:25 am-11:15 am

1 stop19h 50m

Phnom Penh Pochentong

Sun 9/14

12:35 pm-7:20 am

1 stop32h 45m

$970

Los AngelesPhnom Penh

LAX - PNH

LAXPNH

Los Angeles

Sat 7/5

11:00 pm-10:55 pm

1 stop33h 55m

Phnom Penh Pochentong

Tue 7/15

11:55 pm-10:20 am

1 stop24h 25m

$980

Los AngelesPhnom Penh

LAX - PNH

LAXPNH

Los Angeles

Tue 11/18

9:00 pm-11:10 pm

2 stops35h 10m

Phnom Penh Pochentong

Wed 12/3

12:25 am-7:00 pm

1 stop33h 35m

$1,000

Los AngelesPhnom Penh

LAX - PNH

LAXPNH

Los Angeles

Fri 10/10

8:40 pm-1:10 pm

1 stop26h 30m

Phnom Penh Pochentong

Sun 10/19

9:35 am-12:50 pm

2 stops41h 15m

$1,002

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

Showing 1-10 of 25 results
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Best time to book a flight from Riverside to Phnom Penh

Have a flexible travel schedule? Discover the best time to fly to Phnom Penh from Riverside with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Riverside to Phnom Penh

How far ahead should I book a flight from Riverside to Phnom Penh?

Use this chart to determine the optimal time to book a round-trip flight from Riverside to Phnom Penh. Price data was last updated on June 9, 2025.

The price you pay for your flight from Riverside to Phnom Penh may vary depending on when you book. For the best chance of a lower fare, look to book 63 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from Riverside to Phnom Penh?

Currently, March is the cheapest month in which you can book a flight from Riverside to Phnom Penh (average of $991). Flying from Riverside to Phnom Penh in June is currently the most expensive (average of $1,570). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from R1V to PNH?

Find hourly flight availability from Riverside to Phnom Penh. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 12, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Riverside to Phnom Penh as you normally would.

What is the cheapest day to fly from Riverside to Phnom Penh?

Use this chart to determine the cheapest time to fly round-trip from Riverside to Phnom Penh. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Riverside to Phnom Penh flight should consider departing on Thursday at noon when fares are most often at their lowest. Thursday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

Rainfall in Phnom Penh by month

Plan your trip to Phnom Penh by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Phnom Penh ranges from 0.0 - 9.8 inches per month. October is typically the wettest month, when rainfall can reach 9.8 in. January is typically the driest time to visit Phnom Penh when rainfall is around 0.0 in.

Temperature in Phnom Penh by month

Plan your trip to Phnom Penh by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Phnom Penh, use this chart to help with planning. For those seeking warmer temperatures, April is the ideal time of year to visit, when temperatures reach an average of 84.2 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 77.0 F).

Reviews of airlines servicing Phnom Penh

Get insights into the airlines that provide service to Phnom Penh. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Phnom Penh. Reviews last updated June 12, 2025.
Get a feel of what it's like to fly with EVA Air, Korean Air and China Airlines from Riverside to Phnom Penh by reading reviews from past customers. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
EVA Air
8.4
Very good
1,202 reviews

Food

8.1

Overall

8.4

Comfort

8.3

Entertainment

8.0

Boarding

8.4

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount
EVA Air
8.4
Very good
1,202 reviews
EVA Air
8.4
Very good
1,202 reviews

Food

8.1

Overall

8.4

Comfort

8.3

Entertainment

8.0

Boarding

8.4

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount
Korean Air
8.4
Very good
1,088 reviews
EVA Air
8.4
Very good
1,202 reviews

Food

8.1

Overall

8.4

Comfort

8.3

Entertainment

8.0

Boarding

8.4

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount
China Airlines
8.3
Very good
738 reviews
EVA Air
8.4
Very good
1,202 reviews

Food

8.1

Overall

8.4

Comfort

8.3

Entertainment

8.0

Boarding

8.4

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount
Asiana Airlines
8.2
Very good
440 reviews
EVA Air
8.4
Very good
1,202 reviews

Food

8.1

Overall

8.4

Comfort

8.3

Entertainment

8.0

Boarding

8.4

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount
Singapore Airlines
8.1
Very good
1,302 reviews
EVA Air
8.4
Very good
1,202 reviews

Food

8.1

Overall

8.4

Comfort

8.3

Entertainment

8.0

Boarding

8.4

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount

Related info for your journey

Find useful and relevant information for your journey from Riverside to Phnom Penh. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Phnom Penh from Riverside?

    Located just 5.0 mi from the city center, Phnom Penh Pochentong is the airport most travelers will use when flying to Phnom Penh from Riverside. Booking flights from Riverside to Pochentong (PNH) should be relatively easy as there are 0 daily inbound flights from Riverside from 10 different airlines.

  • What are the cheapest airlines to fly from Riverside to Phnom Penh one-way?

    For one-way options, check prices for Asiana Airlines. According to our data, you can fly for as low as $417. Users have also found prices from $418 and $476 on Korean Air and China Airlines, respectively.

  • Can I find deals for flights from Riverside to Phnom Penh that include hotel bookings?

    Yes. In addition to deals on Riverside to Phnom Penh flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Riverside to Phnom Penh?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Riverside to Phnom Penh.

  • Can I find deals for business class flights from Riverside to Phnom Penh?

    Yes. Cheapflights offers flight deals from Riverside to Phnom Penh by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Riverside to Phnom Penh?

    Currently, March is the cheapest month in which you can book a flight from Riverside to Phnom Penh (average of $991). Flying from Riverside to Phnom Penh in June is currently the most expensive (average of $1,570). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Top 10 airlines flying from Riverside to Phnom Penh

Discover the top 10 airlines that operate flights from Riverside to Phnom Penh. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
China SouthernCheapest$628Average$951FlexibilityNo cancel feeOn-time69%
Air ChinaCheapest$644Average$712FlexibilityNo cancel feeOn-time67%
China EasternCheapest$659Average$787FlexibilityNo cancel feeOn-time62%
Philippine AirlinesCheapest$692Average$781FlexibilityNo cancel feeOn-time60%
Asiana AirlinesCheapest$708Average$883FlexibilityNo cancel feeOn-time76%
Cathay PacificCheapest$709Average$863FlexibilityNo cancel feeOn-time72%
Singapore AirlinesCheapest$717Average$966FlexibilityNo cancel feeOn-time81%
Korean AirCheapest$750Average$1,017FlexibilityNo cancel feeOn-time81%
China AirlinesCheapest$850Average$1,084FlexibilityNo cancel feeOn-time70%
EVA AirCheapest$917Average$1,052FlexibilityNo cancel feeOn-time74%

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