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Cheap flights from Portsmouth to Phnom Penh from £871

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 17/5. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — PNH
29 Apr — 6 May1
1 adult

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 24 April 2025.

Round-trip from

£871

Popular in

August

Cheapest in

November

Average price

£774
17/5-25/5
  • 17/5-25/5
  • 4 total stops
  • 85h 50m total
  • Portsmouth to Phnom Penh
Search Deals
Highest demand for flights based on searches. 10% potential increase in price (£59 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£13 potential savings vs. average return price).
Search Deals
Average for round-trip flights in April 2025
Search Deals

Find flight deals from Portsmouth to Phnom Penh

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 24 April 2025.

Sat 17/518:05SOU - PNH
2 stops47h 10mMultiple Airlines
Sun 25/500:10PNH - SOU
2 stops38h 40mMultiple Airlines
Deal found 23/4£871
Sat 17/509:20SOU - PNH
2 stops27h 15mKLM
Mon 26/518:20PNH - SOU
2 stops20h 30mKLM
Deal found 23/4£944

Cheapflights Fare Finder

Customise your flight search to find flights from Portsmouth 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 858,174 searches. Data last updated 24 April 2025.
Use the filters below to find and compare flights from Portsmouth to Phnom Penh that are best for you.

Fly from

Portsmouth

Fly to

Phnom Penh

Route

Depart

Return

Price

SouthamptonPhnom Penh

SOU - PNH

SOUPNH

Southampton Eastleigh

Sat 17/5

18:05-23:15

2 stops47h 10m

Phnom Penh Pochentong

Sun 25/5

00:10-08:50

2 stops38h 40m

£871

SouthamptonPhnom Penh

SOU - PNH

SOUPNH

Southampton Eastleigh

Sat 17/5

09:20-18:35

2 stops27h 15m

Phnom Penh Pochentong

Mon 26/5

18:20-08:50

2 stops20h 30m

£944

Flights are sorted by cheapest return flights first.

Deals found on 23/4

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.
Estimated return 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 Portsmouth to Phnom Penh

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

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.

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 24 April 2025.

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.

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 - 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.

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 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).

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 24 April 2025.
KLM
7.8
Good
1,333 reviews
Check prices

Crew

8.4

Overall

7.8

Boarding

7.8

Comfort

7.7

Food

7.2

Entertainment

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Mar 2025

LBA - AMS

Overall, the flight from Leeds Bradford to Amsterdam was at expected. The crew were efficient at boarding and professional on board. The only issue was extremely slow check in at Leeds Bradford which was very frustrating.
KLM
7.8
Good
1,333 reviews
KLM
7.8
Good
1,333 reviews
Check prices

Crew

8.4

Overall

7.8

Boarding

7.8

Comfort

7.7

Food

7.2

Entertainment

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Mar 2025

LBA - AMS

Overall, the flight from Leeds Bradford to Amsterdam was at expected. The crew were efficient at boarding and professional on board. The only issue was extremely slow check in at Leeds Bradford which was very frustrating.

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?

    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. 12 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.

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

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

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

    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.

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

    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.

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

    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.

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 Portsmouth to Phnom Penh

Discover the top 10 airlines that operate flights from Portsmouth 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 858,174 searches. Data last updated 24 April 2025.
AirlineCheapestAverageFlexibilityOn-time
Air ChinaCheapest£310Average£578FlexibilityNo cancel feeOn-time67%
Search Air China flights
Shenzhen AirlinesCheapest£387Average£458FlexibilityNo cancel feeOn-time63%
Search Shenzhen Airlines flights
China SouthernCheapest£406Average£522FlexibilityNo cancel feeOn-time69%
Search China Southern flights
China EasternCheapest£578Average£639FlexibilityNo cancel feeOn-time62%
Search China Eastern flights
Singapore AirlinesCheapest£611Average£714FlexibilityNo cancel feeOn-time81%
Search Singapore Airlines flights
Malaysia AirlinesCheapest£653Average£748FlexibilityNo cancel feeOn-time67%
Search Malaysia Airlines flights
British AirwaysCheapest£654Average£866FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Cathay PacificCheapest£666Average£786FlexibilityNo cancel feeOn-time72%
Search Cathay Pacific flights
Qatar AirwaysCheapest£667Average£801FlexibilityNo cancel feeOn-time68%
Search Qatar Airways flights
Vietnam AirlinesCheapest£682Average£759FlexibilityNo cancel feeOn-time81%
Search Vietnam Airlines flights

Fly with Cheapflights

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

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.

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

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!

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

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.

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

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