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Cheap flights from the United Kingdom to Phnom Penh

LHR — KTI
10 Oct — 17 Oct1
1 adult
1 adult, Economy, 0 bags

Find flight deals from United Kingdom to Phnom Penh

Popular in

July

Cheapest in

November

Average price

£624
Highest demand for flights based on searches. 14% potential increase in price (£82 potential increase over avg. return price).
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Cheapest flight prices on average. 3% potential price decrease (£17 potential savings vs. average return price).
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Average for round-trip flights in September 2026
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Cheapflights Insights

Everything you need to know about your flight from the United Kingdom to Phnom Penh

How far ahead should I book a flight from United Kingdom to Phnom Penh?

The price you pay for your flight from United Kingdom to Phnom Penh may vary depending on when you book. For the best chance of a lower fare, look to book 83 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 United Kingdom to Phnom Penh?

Currently, November is the cheapest month in which you can book a flight from United Kingdom to Phnom Penh (average of £593). Flying from United Kingdom to Phnom Penh in July is currently the most expensive (average of £954). 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.

Reviews of airlines servicing Phnom Penh

Read reviews from past customers who have flown with Singapore Airlines,Thai Airways, andAir China from the United Kingdom to Phnom Penh. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Singapore Airlines
8.2
Very Good
1,599 reviews
Check prices

Entertainment

8.1

Boarding

8.3

Comfort

8.0

Crew

8.6

Overall

8.2

Food

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,Sept 2026

SIN - JFK

On schedule, courteous, and attentive crew. Really old aircraft and restrooms are not looking good.
Singapore Airlines
8.2
Very Good
1,599 reviews
Singapore Airlines
8.2
Very Good
1,599 reviews
Check prices

Entertainment

8.1

Boarding

8.3

Comfort

8.0

Crew

8.6

Overall

8.2

Food

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,Sept 2026

SIN - JFK

On schedule, courteous, and attentive crew. Really old aircraft and restrooms are not looking good.
Thai Airways
7.9
Good
418 reviews
Singapore Airlines
8.2
Very Good
1,599 reviews
Check prices

Entertainment

8.1

Boarding

8.3

Comfort

8.0

Crew

8.6

Overall

8.2

Food

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,Sept 2026

SIN - JFK

On schedule, courteous, and attentive crew. Really old aircraft and restrooms are not looking good.
Air China
7.5
Good
164 reviews
Singapore Airlines
8.2
Very Good
1,599 reviews
Check prices

Entertainment

8.1

Boarding

8.3

Comfort

8.0

Crew

8.6

Overall

8.2

Food

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,Sept 2026

SIN - JFK

On schedule, courteous, and attentive crew. Really old aircraft and restrooms are not looking good.
Etihad Airways
7.3
Good
1,535 reviews
Singapore Airlines
8.2
Very Good
1,599 reviews
Check prices

Entertainment

8.1

Boarding

8.3

Comfort

8.0

Crew

8.6

Overall

8.2

Food

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,Sept 2026

SIN - JFK

On schedule, courteous, and attentive crew. Really old aircraft and restrooms are not looking good.
China Southern
7.3
Good
172 reviews
Singapore Airlines
8.2
Very Good
1,599 reviews
Check prices

Entertainment

8.1

Boarding

8.3

Comfort

8.0

Crew

8.6

Overall

8.2

Food

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,Sept 2026

SIN - JFK

On schedule, courteous, and attentive crew. Really old aircraft and restrooms are not looking good.

Related info for your journey

  • What airport do you fly into for flights to Phnom Penh from United Kingdom?

    Most people fly into Phnom Penh Techo Intl (KTI) if they book a flight to Phnom Penh from United Kingdom. Techo Intl is conveniently located just 14.1 mi from Phnom Penh’s city center.

  • What are the cheapest airlines to fly from United Kingdom to Phnom Penh one-way?

    One-way options have recently been found by users for as low as £239 on Etihad Airways. Other airlines that offer cheap prices include China Southern from £251 and XiamenAir from £289 one-way.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from United Kingdom 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 United Kingdom to Phnom Penh?

    Currently, November is the cheapest month in which you can book a flight from United Kingdom to Phnom Penh (average of £593). Flying from United Kingdom to Phnom Penh in July is currently the most expensive (average of £954). 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

Top 10 airlines flying from United Kingdom to Phnom Penh

AirlineCheapestAverageFlexibilityOn-time
China SouthernCheapest£234Average£459FlexibilityNo cancel feeOn-time69%
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Air ChinaCheapest£265Average£397FlexibilityNo cancel feeOn-time67%
Search Air China flights
Singapore AirlinesCheapest£358Average£812FlexibilityNo cancel feeOn-time81%
Search Singapore Airlines flights
Shenzhen AirlinesCheapest£406Average£601FlexibilityNo cancel feeOn-time63%
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Etihad AirwaysCheapest£501Average£673FlexibilityNo cancel feeOn-time75%
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China EasternCheapest£572Average£627FlexibilityNo cancel feeOn-time62%
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Malaysia AirlinesCheapest£583Average£801FlexibilityNo cancel feeOn-time67%
Search Malaysia Airlines flights
Qatar AirwaysCheapest£586Average£820FlexibilityNo cancel feeOn-time68%
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Cathay PacificCheapest£700Average£1,016FlexibilityNo cancel feeOn-time72%
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EmiratesCheapest£711Average£878FlexibilityNo cancel feeOn-time75%
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Can Cheapflights notify me if prices for flights from United Kingdom to Phnom Penh become cheaper?

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