How long is the flight from Siem Reap to London?

A quick flight from Siem Reap to London can take about 22h. Emirates provides one of the quickest options available for as low as £948. The distance from Siem Reap to London is about 6106 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

In terms of precipitation, rainfall in London ranges from 40.0 - 70.0 inches per month. January is typically the wettest month, when rainfall can reach 70.0 mm. July is typically the driest time to visit London when rainfall is around 40.0 mm.

If weather is an important factor for your trip to London, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 4.0 C).

What is the cheapest time of day to fly from SAI to LON?

When flying from Siem Reap to London, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

What airport do you fly from for flights from Siem Reap to London?

Siem Reap–Angkor Intl (SAI), located 24.7 mi from the city center, is the airport you fly out of when you book flights from Siem Reap to London. 0 airlines have flights from Siem Reap–Angkor Intl to London on a regular basis. Booking flights from Siem Reap–Angkor Intl to London should not be difficult; the airport handles an average of 0 outbound flights to London per day.

Can I find deals for flights from Siem Reap to London that include hotel bookings?

Yes. In addition to deals on Siem Reap to London flights, Cheapflights offers holiday packages that include both flights and hotel.

How can I find direct flights from Siem Reap to London?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Siem Reap to London.

Can I find deals for business class flights from Siem Reap to London?

Yes. Cheapflights offers flight deals from Siem Reap to London by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

£288+ Cheap Flights from Siem Reap, Cambodia to London

Cheap flight deals from Siem Reap to London

Enter your travel dates to find the best prices.

Cheapest

Best

Last-minute

One-way

Cheapest flights from Siem Reap to London
Explore the most affordable flight options available from Siem Reap to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 10 May 2026.

Sun 24/513:05

SAI

LHR

2 stops32h 15m

Multiple Airlines

Sun 31/522:05

LHR

SAI

2 stops39h 00m

Multiple Airlines

Deal found 8/5£679

Sun 24/513:05

SAI

LGW

2 stops36h 40m

Emirates

Sun 31/514:35

LGW

SAI

2 stops39h 45m

Emirates

Deal found 8/5£761

Fri 18/1219:25

SAI

LHR

2 stops44h 45m

Finnair

Mon 4/116:15

LHR

SAI

2 stops37h 25m

Finnair

Deal found 6/5£791

Fri 18/1221:30

SAI

LHR

1 stop16h 45m

Vietnam Airlines

Mon 4/111:00

LHR

SAI

1 stop22h 55m

Vietnam Airlines

Deal found 9/5£876

Sun 31/516:00

SAI

LHR

1 stop22h 00m

Singapore Airlines

Thu 25/609:25

LHR

SAI

1 stop18h 15m

Singapore Airlines

Deal found 5/5£948

Sun 24/512:25

SAI

LGW

2 stops32h 35m

Multiple Airlines

Sun 31/513:55

LGW

SAI

3 stops23h 10m

Multiple Airlines

Deal found 8/5£1,043

Sun 24/516:00

SAI

LGW

1 stop20h 55m

Singapore Airlines

Sun 31/510:10

LGW

SAI

1 stop17h 30m

Singapore Airlines

Deal found 8/5£2,016

Find flight deals from Siem Reap to London

Round-trip from	£679
One-way from	£288

24/5-31/5
4 total stops
71h 15m total
Siem Reap to London

Search Deals

15/6
2 total stops
24h 00m total
Siem Reap to London

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

Siem ReapLondon

SAI - LHR

SAILHR

Siem Reap–Angkor Intl

Sun 24/5

13:05-15:20

2 stops32h 15m

London Heathrow

Sun 31/5

22:05-19:05

2 stops39h 00m

£679

Siem ReapLondon

SAI - LGW

SAILGW

Siem Reap–Angkor Intl

Sun 24/5

13:05-19:45

2 stops36h 40m

London Gatwick

Sun 31/5

14:35-12:20

2 stops39h 45m

£761

Siem ReapLondon

SAI - LHR

SAILHR

Siem Reap–Angkor Intl

Sun 31/5

16:00-08:00

1 stop22h 00m

London Heathrow

Thu 25/6

09:25-09:40

1 stop18h 15m

£948

Siem ReapLondon

SAI - LGW

SAILGW

Siem Reap–Angkor Intl

Sun 24/5

12:25-15:00

2 stops32h 35m

London Gatwick

Sun 31/5

13:55-19:05

3 stops23h 10m

£1,043

Fastest return journey

Siem ReapLondon

SAI - LGW

SAILGW

Siem Reap–Angkor Intl

Sun 24/5

16:00-06:55

1 stop20h 55m

London Gatwick

Sun 31/5

10:10-09:40

1 stop17h 30m

£2,016

Cheapest one-way

Siem ReapLondon

SAI - LHR

SAILHR

Siem Reap–Angkor Intl

Mon 15/6

12:55-06:55

2 stops24h 00m

£288

Siem ReapLondon

SAI - LHR

SAILHR

Siem Reap–Angkor Intl

Sun 21/6

12:55-06:55

2 stops24h 00m

£293

Siem ReapLondon

SAI - LHR

SAILHR

Siem Reap–Angkor Intl

Sun 24/5

09:45-15:20

2 stops35h 35m

£295

Siem ReapLondon

SAI - LHR

SAILHR

Siem Reap–Angkor Intl

Sun 14/6

12:55-06:55

2 stops24h 00m

£298

Siem ReapLondon

SAI - LGW

SAILGW

Siem Reap–Angkor Intl

Sun 21/6

19:05-06:35

3 stops41h 30m

£354

Flights are sorted by cheapest return flights first.

Deals found on 8/5

Showing 1-10 of 26 resultsSorted by cheapest first

Best time to book a flight from Siem Reap to London

Have a flexible travel schedule? Discover the best time to fly to London from Siem Reap with our price prediction graph.

SAI-LON

SAI-LHR

SAI-LGW

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 Siem Reap to London

SAI-LON

SAI-LHR

SAI-LGW

No data available for this route at this time. Please check back soon.

Related info for your journey

What airport do you fly from for flights from Siem Reap to London?
Siem Reap–Angkor Intl (SAI), located 24.7 mi from the city center, is the airport you fly out of when you book flights from Siem Reap to London. 0 airlines have flights from Siem Reap–Angkor Intl to London on a regular basis. Booking flights from Siem Reap–Angkor Intl to London should not be difficult; the airport handles an average of 0 outbound flights to London per day.
How long is the flight from Siem Reap to London?
A quick flight from Siem Reap to London can take about 22h. Emirates provides one of the quickest options available for as low as £948. The distance from Siem Reap to London is about 6106 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.
Can I find deals for flights from Siem Reap to London that include hotel bookings?
Yes. In addition to deals on Siem Reap to London flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Siem Reap to London?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Siem Reap to London.
Can I find deals for business class flights from Siem Reap to London?
Yes. Cheapflights offers flight deals from Siem Reap to London by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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Why should you use Cheapflights to find cheap flight tickets from Siem Reap to London?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Siem Reap to London.

Can Cheapflights find flights from Siem Reap to London with no change fees?

Certainly. Search results for flights to London from Siem Reap shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from Siem Reap to London become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to London from Siem Reap today and book when prices fit your budget.

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Cheap flights from Siem Reap, Cambodia to London from £288

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 15/6. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Siem Reap to London

Cheapest flights from Siem Reap to LondonExplore the most affordable flight options available from Siem Reap to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 10 May 2026.

Explore the most affordable flight options available from Siem Reap to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 10 May 2026.

Best flights from Siem Reap to LondonDiscover carefully curated flight deals from Siem Reap to London that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 10 May 2026.

Discover carefully curated flight deals from Siem Reap to London that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 10 May 2026.

Last-minute flights from Siem Reap to LondonDiscover last-minute flight deals from Siem Reap to London. Data last updated 10 May 2026 and is based on user searches.

Discover last-minute flight deals from Siem Reap to London. Data last updated 10 May 2026 and is based on user searches.

One-way flights from Siem Reap to LondonSearch for one-way flight options from Siem Reap to London. Find affordable one-way fares based on user searches. Data last updated 10 May 2026.

Search for one-way flight options from Siem Reap to London. Find affordable one-way fares based on user searches. Data last updated 10 May 2026.

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Best time to book a flight from Siem Reap to London

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Cheapflights Insights

Everything you need to know about your flight from Siem Reap to London

Related info for your journey

Find useful and relevant information for your journey from Siem Reap to London. 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 from for flights from Siem Reap to London?

How long is the flight from Siem Reap to London?

Can I find deals for flights from Siem Reap to London that include hotel bookings?

How can I find direct flights from Siem Reap to London?

Can I find deals for business class flights from Siem Reap to London?

Travelling to a place near London?

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Alternative routes for Siem Reap to London

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

Complete your trip

Complete your trip to London by adding a car hire and/or hotel booking to your travel itinerary.

Direct flights to England

Book a non-stop flight to one of these other cities located in England.

Search flights from Siem Reap to London by cabin class

Find flights from Siem Reap to London, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Other flights to London

Explore flights to London departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 10 May 2026.

Siem Reap and London flights

Browse other Siem Reap and London flight options. Last updated on 10 May 2026.

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How does Cheapflights help users find flights from Siem Reap to London?

Why should you use Cheapflights to find cheap flight tickets from Siem Reap to London?

Can Cheapflights find flights from Siem Reap to London with no change fees?

Can Cheapflights notify me if prices for flights from Siem Reap to London become cheaper?

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Cheapest flights from Siem Reap to London
Explore the most affordable flight options available from Siem Reap to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 10 May 2026.

Best flights from Siem Reap to London
Discover carefully curated flight deals from Siem Reap to London that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 10 May 2026.

Last-minute flights from Siem Reap to London
Discover last-minute flight deals from Siem Reap to London. Data last updated 10 May 2026 and is based on user searches.

One-way flights from Siem Reap to London
Search for one-way flight options from Siem Reap to London. Find affordable one-way fares based on user searches. Data last updated 10 May 2026.