HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Phnom Penh

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

LAX — PNH
Nov 29 — Dec 61
Sat 11/29
Sat 12/6
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Riverside to Phnom Penh with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheapflights Tip: The best prices from Riverside to Phnom Penh Pochentong are usually found in September or October, 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 October 30, 2025.

Most accurate provider

Justfly.com
3 stars

Most trusted provider

Justfly.com
3 stars

Popular in

June

Cheapest in

September

Average price

$823
Provider with most accurate pricing for Los Angeles-Phnom Penh Pochentong flight deals.
Search Deals
Provider most trusted by Cheapflights users for Los Angeles-Phnom Penh Pochentong flights.
Search Deals
Highest demand for flights based on searches. 18% potential increase in price ($221 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($40 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
Search 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 October 24, 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, September is the cheapest month in which you can book a flight from Riverside to Phnom Penh (average of $566). Flying from Riverside to Phnom Penh in June is currently the most expensive (average of $872). 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 October 30, 2025.

When flying from Riverside to Phnom Penh, the time of day you fly usually plays a role in the price. Save by searching for a flight at noon, which can drop the price by up to 25% versus a flight in the afternoon.

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. Sunday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

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 October 30, 2025.
Peruse reviews from past customers who have flown with EVA 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.
EVA Air
8.4
Very good
1,267 reviews

Overall

8.4

Boarding

8.4

Entertainment

8.0

Crew

8.6

Comfort

8.3

Food

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Oct 2025

TPE - YYZ

All was well. Despite the flight being delayed a few minutes, passengers were made sure to be informed and updated on the status of the delay.
EVA Air
8.4
Very good
1,267 reviews
EVA Air
8.4
Very good
1,267 reviews

Overall

8.4

Boarding

8.4

Entertainment

8.0

Crew

8.6

Comfort

8.3

Food

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Oct 2025

TPE - YYZ

All was well. Despite the flight being delayed a few minutes, passengers were made sure to be informed and updated on the status of the delay.
China Airlines
8.3
Very good
776 reviews
EVA Air
8.4
Very good
1,267 reviews

Overall

8.4

Boarding

8.4

Entertainment

8.0

Crew

8.6

Comfort

8.3

Food

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Oct 2025

TPE - YYZ

All was well. Despite the flight being delayed a few minutes, passengers were made sure to be informed and updated on the status of the delay.
Asiana Airlines
8.2
Very good
484 reviews
EVA Air
8.4
Very good
1,267 reviews

Overall

8.4

Boarding

8.4

Entertainment

8.0

Crew

8.6

Comfort

8.3

Food

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Oct 2025

TPE - YYZ

All was well. Despite the flight being delayed a few minutes, passengers were made sure to be informed and updated on the status of the delay.
Singapore Airlines
8.1
Very good
1,388 reviews
EVA Air
8.4
Very good
1,267 reviews

Overall

8.4

Boarding

8.4

Entertainment

8.0

Crew

8.6

Comfort

8.3

Food

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Oct 2025

TPE - YYZ

All was well. Despite the flight being delayed a few minutes, passengers were made sure to be informed and updated on the status of the delay.
Cathay Pacific
7.6
Good
1,044 reviews
EVA Air
8.4
Very good
1,267 reviews

Overall

8.4

Boarding

8.4

Entertainment

8.0

Crew

8.6

Comfort

8.3

Food

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Oct 2025

TPE - YYZ

All was well. Despite the flight being delayed a few minutes, passengers were made sure to be informed and updated on the status of the delay.

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.

  • 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, September is the cheapest month in which you can book a flight from Riverside to Phnom Penh (average of $566). Flying from Riverside to Phnom Penh in June is currently the most expensive (average of $872). 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

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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 October 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
China SouthernCheapest$560Average$912FlexibilityNo cancel feeOn-time69%
Air ChinaCheapest$644Average$702FlexibilityNo cancel feeOn-time67%
China EasternCheapest$651Average$765FlexibilityNo cancel feeOn-time62%
Philippine AirlinesCheapest$661Average$778FlexibilityNo cancel feeOn-time60%
Singapore AirlinesCheapest$671Average$904FlexibilityNo cancel feeOn-time81%
Cathay PacificCheapest$675Average$845FlexibilityNo cancel feeOn-time72%
Asiana AirlinesCheapest$709Average$846FlexibilityNo cancel feeOn-time76%
Korean AirCheapest$750Average$985FlexibilityNo cancel feeOn-time81%
China AirlinesCheapest$821Average$1,194FlexibilityNo cancel feeOn-time70%
EVA AirCheapest$890Average$1,122FlexibilityNo cancel feeOn-time74%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.