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Phnom Penh

$375+ 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 8/12. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — PNH
Aug 6 — Aug 131
Wed 8/6
Wed 8/13
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 75 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 August 1, 2025.

Round-trip from

$737
(CrystalTravel)

One-way from

$375
(oojo)

Popular in

June

Cheapest in

March

Average price

$972
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. 16% potential increase in price ($200 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($35 potential savings vs. average RT price).
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Average for round-trip flights in August 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 August 1, 2025.

This FlightHub deal was found by Cheapflights users on 7/31. 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.
Thu 11/610:25 pmLAX - PNH
1 stop33h 45mAir China
Wed 3/2512:25 amPNH - LAX
1 stop33h 35mAir China
Deal found 7/31$737
This oojo deal was found by Cheapflights users on 7/31. 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.
Tue 11/49:00 pmLAX - PNH
1 stop22h 40mMultiple Airlines
Sun 12/2112:25 amPNH - LAX
1 stop33h 35mMultiple Airlines
Deal found 7/31$738
This CrystalTravel deal was found by Cheapflights users on 7/31. 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 CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/812:30 pmLAX - PNH
1 stop20h 45mChina Eastern
Fri 10/312:10 amPNH - LAX
1 stop23h 55mChina Eastern
Deal found 7/31$740
This FlightHub deal was found by Cheapflights users on 7/31. 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.
Wed 10/111:40 pmLAX - PNH
1 stop28h 00mSingapore Airlines
Wed 11/52:40 pmPNH - LAX
1 stop20h 15mSingapore Airlines
Deal found 7/31$741
This Ovago deal was found by Cheapflights users on 7/30. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/211:25 pmLAX - PNH
1 stop37h 55mCathay Pacific
Mon 9/811:25 amPNH - LAX
1 stop19h 40mCathay Pacific
Deal found 7/30$751
This KAYAK deal was found by Cheapflights users on 7/30. 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.
Fri 11/1410:55 amLAX - PNH
1 stop22h 20mPhilippine Airlines
Sat 11/291:15 amPNH - LAX
1 stop21h 45mPhilippine Airlines
Deal found 7/30$758
This oojo deal was found by Cheapflights users on 7/29. 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.
Mon 10/2012:40 pmLAX - PNH
1 stop19h 30mKorean Air
Wed 11/511:45 pmPNH - LAX
1 stop28h 55mKorean Air
Deal found 7/29$762

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 August 1, 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

Thu 11/6

10:25 pm-11:10 pm

1 stop33h 45m

Phnom Penh Pochentong

Sun 12/21

12:25 am-7:00 pm

1 stop33h 35m

$737

Los AngelesPhnom Penh

LAX - PNH

LAXPNH

Los Angeles

Tue 11/4

9:00 pm-10:40 am

1 stop22h 40m

Phnom Penh Pochentong

Sun 12/21

12:25 am-7:00 pm

1 stop33h 35m

$738

Los AngelesPhnom Penh

LAX - PNH

LAXPNH

Los Angeles

Mon 9/8

12:30 pm-11:15 pm

1 stop20h 45m

Phnom Penh Pochentong

Fri 10/3

12:10 am-10:05 am

1 stop23h 55m

$740

Los AngelesPhnom Penh

LAX - PNH

LAXPNH

Los Angeles

Wed 10/1

11:40 pm-5:40 pm

1 stop28h 00m

Phnom Penh Pochentong

Wed 11/5

2:40 pm-7:55 pm

1 stop20h 15m

$741

Los AngelesPhnom Penh

LAX - PNH

LAXPNH

Los Angeles

Thu 8/21

1:25 pm-5:20 pm

1 stop37h 55m

Phnom Penh Pochentong

Mon 9/8

11:25 am-5:05 pm

1 stop19h 40m

$751

Los AngelesPhnom Penh

LAX - PNH

LAXPNH

Los Angeles

Fri 11/14

10:55 am-12:15 am

1 stop22h 20m

Phnom Penh Pochentong

Sat 11/29

1:15 am-8:00 am

1 stop21h 45m

$758

Los AngelesPhnom Penh

LAX - PNH

LAXPNH

Los Angeles

Mon 10/20

12:40 pm-10:10 pm

1 stop19h 30m

Phnom Penh Pochentong

Wed 11/5

11:45 pm-8:30 am

1 stop23h 45m

$762

Los AngelesPhnom Penh

LAX - PNH

LAXPNH

Los Angeles

Tue 8/12

12:25 am-5:20 pm

1 stop26h 55m

$375

Los AngelesPhnom Penh

LAX - PNH

LAXPNH

Los Angeles

Wed 9/3

12:30 pm-11:15 pm

1 stop20h 45m

$380

Los AngelesPhnom Penh

LAX - PNH

LAXPNH

Los Angeles

Mon 8/18

12:30 pm-10:10 pm

1 stop19h 40m

$383

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/30

Showing 1-10 of 14 results
1
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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 July 25, 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 75 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 $988). Flying from Riverside to Phnom Penh in June is currently the most expensive (average of $1,549). 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 August 1, 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.

How much does it cost to fly round-trip from Riverside to Phnom Penh?

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 August 1, 2025.
Peruse reviews from past customers who have flown with Korean Air, China Airlines, and Asiana Airlines from Riverside to Phnom Penh to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Korean Air
8.4
Very good
1,121 reviews

Food

8.1

Crew

8.7

Overall

8.4

Boarding

8.5

Comfort

8.2

Entertainment

8.2

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Korean Air
8.4
Very good
1,121 reviews
Korean Air
8.4
Very good
1,121 reviews

Food

8.1

Crew

8.7

Overall

8.4

Boarding

8.5

Comfort

8.2

Entertainment

8.2

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
China Airlines
8.3
Very good
754 reviews
Korean Air
8.4
Very good
1,121 reviews

Food

8.1

Crew

8.7

Overall

8.4

Boarding

8.5

Comfort

8.2

Entertainment

8.2

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Asiana Airlines
8.2
Very good
468 reviews
Korean Air
8.4
Very good
1,121 reviews

Food

8.1

Crew

8.7

Overall

8.4

Boarding

8.5

Comfort

8.2

Entertainment

8.2

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Singapore Airlines
8.1
Very good
1,338 reviews
Korean Air
8.4
Very good
1,121 reviews

Food

8.1

Crew

8.7

Overall

8.4

Boarding

8.5

Comfort

8.2

Entertainment

8.2

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Cathay Pacific
7.6
Good
949 reviews
Korean Air
8.4
Very good
1,121 reviews

Food

8.1

Crew

8.7

Overall

8.4

Boarding

8.5

Comfort

8.2

Entertainment

8.2

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.

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 XiamenAir. According to our data, you can fly for as low as $375. Users have also found prices from $376 and $380 on Cathay Pacific and China Eastern, 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 $988). Flying from Riverside to Phnom Penh in June is currently the most expensive (average of $1,549). 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

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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 August 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
China SouthernCheapest$628Average$943FlexibilityNo cancel feeOn-time69%
Air ChinaCheapest$644Average$712FlexibilityNo cancel feeOn-time67%
China EasternCheapest$660Average$797FlexibilityNo cancel feeOn-time62%
Philippine AirlinesCheapest$661Average$784FlexibilityNo cancel feeOn-time60%
Singapore AirlinesCheapest$674Average$946FlexibilityNo cancel feeOn-time81%
Cathay PacificCheapest$707Average$863FlexibilityNo cancel feeOn-time72%
Asiana AirlinesCheapest$708Average$882FlexibilityNo cancel feeOn-time76%
Korean AirCheapest$750Average$990FlexibilityNo cancel feeOn-time81%
China AirlinesCheapest$826Average$1,042FlexibilityNo cancel feeOn-time70%
EVA AirCheapest$907Average$1,060FlexibilityNo cancel feeOn-time74%

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