Question 1

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

Accepted Answer

Currently, September is the cheapest month in which you can book a flight from Portsmouth to Phnom Penh (average of £689). Flying from Portsmouth to Phnom Penh in July is currently the most expensive (average of £1,232). 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.

Question 2

E

Accepted Answer

In terms of precipitation, rainfall in Phnom Penh ranges from 0.0 - 250.0 inches per month. October is typically the wettest month, when rainfall can reach 250.0 mm. January is typically the driest time to visit Phnom Penh when rainfall is around 0.0 mm.

Question 3

E

Accepted Answer

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 29.0 C. Travellers hoping to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 25.0 C).

Question 4

What are the most popular airlines that fly from Portsmouth to Phnom Penh?

Accepted Answer

Before booking your flight from Portsmouth to Phnom Penh check out the most popular airlines for this route: British Airways, Air China or Cathay Pacific.

Question 5

How far in advance should I book a flight from Portsmouth to Phnom Penh?

Accepted Answer

To save on the cost of your flight from Portsmouth to Phnom Penh, book at least 54 days before your planned departure. Booking around this time can save you about 16% on the cost of this flight compared to booking a flight leaving this week. We have found prices from £528 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as £809.

Question 6

What is the cheapest month to fly from Portsmouth to Phnom Penh?

Accepted Answer

Flights from Portsmouth to Phnom Penh lean towards being more expensive in December. Prices are generally better when you fly from Portsmouth to Phnom Penh in November, with the cheapest ticket starting at £406.

Question 7

What is the cheapest time of day to fly from P0R to PNH?

Accepted Answer

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

Question 8

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

Accepted Answer

Phnom Penh Pochentong (PNH), located 5.0 mi from the city center, is the airport you fly into when you book flights from Portsmouth to Phnom Penh. 13 airlines have flights to Pochentong from Portsmouth on a regular basis. Booking flights from Portsmouth to Phnom Penh Pochentong should not be difficult; the airport handles an average of 0 inbound flights from Portsmouth per day.

Question 9

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

Accepted Answer

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

Question 10

How can I find direct flights from Portsmouth to Phnom Penh?

Accepted Answer

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

Question 11

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

Accepted Answer

Yes. Cheapflights offers flight deals from Portsmouth 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.

Question 12

How does Cheapflights help users find flights from Portsmouth to Phnom Penh?

Accepted Answer

Cheapflights helps you search for flights from Portsmouth to Phnom Penh via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Question 13

Why should you use Cheapflights to find cheap flight tickets from Portsmouth to Phnom Penh?

Accepted Answer

Cheapflights helps you find that perfect flight to Phnom Penh from Portsmouth by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Question 14

Can Cheapflights find flights from Portsmouth to Phnom Penh with no change fees?

Accepted Answer

Cheapflights does show flights with no change fees to all users. To see these options for flights from Portsmouth to Phnom Penh, users can toggle the no change fees filter when performing a flight search.

Question 15

Can Cheapflights notify me if prices for flights from Portsmouth to Phnom Penh become cheaper?

Accepted Answer

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

Round-trip from	£809
Popular in	December
Cheapest in	November
Average price	£797

Airline	Cheapest	Average	Flexibility	On-time
China Southern	Cheapest£358	Average£467	FlexibilityNo cancel fee	On-time69%	Search China Southern flights
Shenzhen Airlines	Cheapest£378	Average£451	FlexibilityNo cancel fee	On-time63%	Search Shenzhen Airlines flights
Air China	Cheapest£422	Average£492	FlexibilityNo cancel fee	On-time67%	Search Air China flights
China Eastern	Cheapest£506	Average£585	FlexibilityNo cancel fee	On-time62%	Search China Eastern flights
Etihad Airways	Cheapest£512	Average£589	FlexibilityNo cancel fee	On-time75%	Search Etihad Airways flights
Singapore Airlines	Cheapest£586	Average£699	FlexibilityNo cancel fee	On-time81%	Search Singapore Airlines flights
Malaysia Airlines	Cheapest£589	Average£705	FlexibilityNo cancel fee	On-time67%	Search Malaysia Airlines flights
British Airways	Cheapest£640	Average£790	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
Vietnam Airlines	Cheapest£650	Average£742	FlexibilityNo cancel fee	On-time81%	Search Vietnam Airlines flights
Cathay Pacific	Cheapest£666	Average£785	FlexibilityNo cancel fee	On-time72%	Search Cathay Pacific flights

Cheap flights from Portsmouth to Phnom Penh from £809

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 24/8. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Portsmouth to Phnom Penh

Keep the following information in mind while searching for Portsmouth to Phnom Penh flight deals. Data was last updated 11 July 2025.

Round-trip from

Popular in

Cheapest in

Average price

Find flight deals from Portsmouth to Phnom Penh

Cheapest flights from Portsmouth to Phnom PenhExplore the most affordable flight options available from Portsmouth to Phnom Penh. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 11 July 2025.

Explore the most affordable flight options available from Portsmouth to Phnom Penh. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 11 July 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Portsmouth to Phnom Penh that are best for you.

Best time to book a flight from Portsmouth to Phnom Penh

Have a flexible travel schedule? Discover the best time to fly to Phnom Penh from Portsmouth with our price prediction graph.

Cheapflights Insights

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

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

What is the cheapest time of day to fly from P0R to PNH?

Find hourly flight availability from Portsmouth 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 11 July 2025.

Related info for your journey

Find useful and relevant information for your journey from Portsmouth 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 Portsmouth?

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

How can I find direct flights from Portsmouth to Phnom Penh?

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

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

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.

Alternative routes for Portsmouth to Phnom Penh

See prices for flight routes from nearby airports that may be better suited for you.

Top 10 airlines flying from Portsmouth to Phnom Penh

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Portsmouth to Phnom Penh?

Why should you use Cheapflights to find cheap flight tickets from Portsmouth to Phnom Penh?

Can Cheapflights find flights from Portsmouth to Phnom Penh with no change fees?

Can Cheapflights notify me if prices for flights from Portsmouth to Phnom Penh become cheaper?

100% Free

Book with Flexibility

Travel Smart

Cheapest flights from Portsmouth to Phnom Penh
Explore the most affordable flight options available from Portsmouth to Phnom Penh. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 11 July 2025.