Question 1

E

Accepted Answer

In terms of precipitation, rainfall in Region of Siem Reap ranges from 0.0 - 260.0 inches per month. September is typically the wettest month, when rainfall can reach 260.0 mm. January is typically the driest time to visit Region of Siem Reap when rainfall is around 0.0 mm.

Question 2

E

Accepted Answer

If weather is an important factor for your trip to Region of Siem Reap, 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 24.0 C).

Question 3

What are the most popular airlines that fly from London to Region of Siem Reap?

Accepted Answer

Consider Lufthansa, Singapore Airlines or Thai Airways when booking your flight. These represent the most popular airlines when flying from London to Region of Siem Reap.

Question 4

How far in advance should I book a flight from London to Region of Siem Reap?

Accepted Answer

When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 46 days in advance, which can save you up to 61% on flights from London to Region of Siem Reap compared to booking the week you need them. Waiting 46 days out may not be for everyone, so we have options available for flights within the next two weeks, with the lowest price starting at £725. For sooner than that we have options available in the next 3 days from £884.

Question 5

What is the cheapest month to fly from London to Region of Siem Reap?

Accepted Answer

September is one of the best times of the year to fly to Region of Siem Reap from London. Prices for September average £845 per person but you can even find prices for as low as £669. The most expensive prices can be found in the month of December. Opting for a September flight can save you 46% on your journey compared to booking in December

Question 6

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

Accepted Answer

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

Question 7

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

Accepted Answer

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

Question 8

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

Accepted Answer

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

Question 9

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

Accepted Answer

Yes. Cheapflights offers flight deals from London to Siem Reap 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 10

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

Accepted Answer

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from London to Siem Reap. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Question 11

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

Accepted Answer

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from London to Siem Reap for you. Better yet — we are completely free to use.

Question 12

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

Accepted Answer

Users can book flights with no change fees policies with our dedicated filters. Book flights from London to Siem Reap flexibly with Cheapflights today.

Question 13

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

Accepted Answer

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

Popular in	December
Cheapest in	September
Average price	£768

Airline	Cheapest	Average	Flexibility	On-time
Vietnam Airlines	Cheapest£628	Average£725	FlexibilityNo cancel fee	On-time81%	Search Vietnam Airlines flights
Singapore Airlines	Cheapest£632	Average£724	FlexibilityNo cancel fee	On-time81%	Search Singapore Airlines flights
Lufthansa	Cheapest£728	Average£764	FlexibilityNo cancel fee	On-time76%	Search Lufthansa flights
Thai Airways	Cheapest£818	Average£941	FlexibilityNo cancel fee	On-time77%	Search Thai Airways flights

Cheap flight deals from London to Siem Reap

Keep the following information in mind while searching for London to Siem Reap flight deals. Data was last updated 29 8月 2025.

Popular in

Cheapest in

Average price

Reviews of airlines servicing Siem Reap

Check out reviews from past customers who have flown with Singapore Airlines, Thai Airways, andVietnam Airlines from London to Siem Reap to help guide your decision. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from London to Siem Reap. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

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

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

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 London to Siem Reap

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

Complete your trip

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

Direct flights to

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

Search flights from London to Siem Reap by cabin class

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

London and Siem Reap flights

Browse other London and Siem Reap flight options. Last updated on 29 8月 2025.

Popular flight searches

Check out other popular destinations found by fellow travellers in 2025

Top 4 airlines flying from London to Siem Reap

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 London to Siem Reap?

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

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

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

100% Free

Book with Flexibility

Travel Smart

Cheap flights from London to Siem Reap

Cheap flight deals from London to Siem Reap

Keep the following information in mind while searching for London to Siem Reap flight deals. Data was last updated 29 8月 2025.

Popular in

Cheapest in

Average price

Reviews of airlines servicing Siem Reap

Check out reviews from past customers who have flown with Singapore Airlines, Thai Airways, andVietnam Airlines from London to Siem Reap to help guide your decision. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from London to Siem Reap. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

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

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

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 London to Siem Reap

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

Top 4 airlines flying from London to Siem Reap

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 London to Siem Reap?

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

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

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

100% Free

Book with Flexibility

Travel Smart