Cheap flights from London Heathrow Airport to Phnom Penh from £278
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from London Heathrow Airport to Phnom Penh departing on 6/5. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
Discover deals from 900+ travel sites with momondo.
Save money when you book flights with momondo
Big names, great deals
Big names, great deals
Search 100s of travel sites to compare prices.Filter for what you want
Filter for what you want
Free Wi-Fi? Stopover? Instantly customise your results.Trusted and free
Trusted and free
We’re completely free to use - no hidden charges or fees.Price Alerts
Price Alerts
Not ready to book? to track prices.Find the cheapest flights from London Heathrow Airport to Phnom Penh
Cheap return flights
Cheap one-way flights
Cheap last-minute flights
China Southern flights from London Heathrow Airport to Phnom Penh
Our best China Southern deals on London Heathrow Airport to Phnom Penh flight tickets
Air China flights from London Heathrow Airport to Phnom Penh
Our best Air China deals on London Heathrow Airport to Phnom Penh flight tickets
See travel insights to Phnom Penh from
How to get the cheapest flight ticket from London Heathrow Airport to Phnom Penh
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the typical price of a round-trip flight between London Heathrow Airport and Phnom Penh?
What is the cheapest month to fly to Phnom Penh?
The month of November is another great option to travel to Phnom Penh, with average flight prices from London Heathrow Airport averaging around £588.
What is the cheapest day to depart on your flight to Phnom Penh?
Our data shows that Monday is the least expensive day to fly to Phnom Penh. Tickets to fly out on this day can be as low as £621. Be sure to avoid booking your departure on a Friday as prices are generally higher than usual. According to our data, the average ticket price to Phnom Penh on Friday is £723.
What is the cheapest time of day to depart on your flight to Phnom Penh?
Our data shows that the cheapest London Heathrow Airport to Phnom Penh flights are usually those with departure times in the evening. Our users have found flights to Phnom Penh in the evening for as low as £530. At midday is when there is more demand to fly to Phnom Penh, so prices are often more expensive at around £815 per ticket.
How far in advance should I book a flight to Phnom Penh?
You are more likely to see cheaper flights to Phnom Penh from London Heathrow Airport when booking 2 weeks ahead of your departure date. In general, you can expect to find flights to Phnom Penh for around £721 when searching 2 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Phnom Penh from London Heathrow Airport for as low as £619 on momondo.
What is the cheapest airline that flies from London Heathrow to Phnom Penh Pochentong?
Shenzhen Airlines, Singapore Airlines, and China Southern are the most popular carriers operating from London Heathrow to Phnom Penh Pochentong
Which airlines fly to Phnom Penh?
China Southern, Air China and Singapore Airlines are the top three most popular airlines that fly to Phnom Penh from London Heathrow Airport according to our data. China Southern is the first choice among our users, with 37% of people opting to fly with this airline when travelling to Phnom Penh. Keep in mind that there are 12 different airlines that fly to Phnom Penh on a routine basis, so you have a few additional options to choose from.
When to book flights from London Heathrow Airport to Phnom Penh
Cheap London Heathrow Airport to Phnom Penh (LHR to PNH) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from London Heathrow Airport to Phnom Penh
How far is London Heathrow to Phnom Penh Pochentong by plane?
Phnom Penh Pochentong is 6233.8 mi away from London Heathrow. A reasonable flight in good conditions will take 15h 05m.
When did momondo last update prices for flights from London Heathrow Airport to Phnom Penh Pochentong Airport?
Prices for flights from London Heathrow Airport to Phnom Penh Pochentong Airport are updated daily.
How many operators does momondo search for flights from London Heathrow Airport to Phnom Penh Pochentong Airport?
The number of operators available for flights from London Heathrow Airport to Phnom Penh Pochentong Airport is 12 as of April 2025.
How old do you have to be to fly from London Heathrow Airport to Phnom Penh Pochentong Airport?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from London Heathrow Airport to Phnom Penh Pochentong Airport.
What documentation or ID do you need to fly to Phnom Penh Pochentong Airport?
The required travel and health documents for your Phnom Penh Pochentong Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Phnom Penh Pochentong Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular airline from London Heathrow Airport to Phnom Penh?
Based on momondo bookings for this flight route, the most popular airline on flight routes from London Heathrow Airport to Phnom Penh is China Southern (27% of total bookings). The next most popular airlines are Air China (20%), Singapore Airlines (14%), and Thai Airways (13%).
Best airlines flying from London Heathrow Airport to Phnom Penh
Compare and see reviews for airlines that fly from London Heathrow Airport to Phnom Penh with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom £384 | Free Cancellation | Rating 6.1 11 reviews | |||
| PriceFrom £436 | Free Cancellation | Rating 7.2 88 reviews | |||
| PriceFrom £446 | Free Cancellation | Rating 7.5 96 reviews | |||
| PriceFrom £575 | Free Cancellation | Rating 7.1 148 reviews | |||
| PriceFrom £610 | Free Cancellation | Rating 8.1 1,292 reviews | |||
| PriceFrom £651 | Free Cancellation | Rating 6.6 6,834 reviews | |||
| PriceFrom £651 | Free Cancellation | Rating 7.3 254 reviews | |||
| PriceFrom £663 | Free Cancellation | Rating 7.5 852 reviews | |||
| PriceFrom £679 | Free Cancellation | Rating 7.5 196 reviews | |||
| PriceFrom £705 | Free Cancellation | Rating 7.4 3,561 reviews |
Why use momondo?
Why should I use momondo to find a flight deal from London to Phnom Penh?
We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from London to Phnom Penh for you.
Can I find flights from London to Phnom Penh with flexible booking policies on momondo?
All flight searches from London to Phnom Penh on momondo can be filtered to show those which offer flexible booking policies.
How can momondo help me find flights from London to Phnom Penh?
Once all potential London to Phnom Penh flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.
I’m not ready to book a flight from London to Phnom Penh right now. Can momondo alert me if prices change?
Of course. momondo tracks the price of London to Phnom Penh flights. All you need is a valid email address and we will do the rest; it is that quick and easy.