Which airport is the most popular for stopovers for flights between London and Siem Reap?

Singapore (SIN) was the most common stop: 53% of momondo users choosing one-stop flights on this route connected there.

Which stopover airport has the shortest connection time from London to Siem Reap?

Bangkok (BKK) has the shortest average stopover time for this route: 1h 54m.

Which airlines fly to Siem Reap?

Singapore Airlines, Vietnam Airlines and Thai Airways are the top three most popular airlines that fly to Siem Reap from London according to our data. Singapore Airlines is the first choice among our users, with 44% of people opting to fly with this airline when travelling to Siem Reap. Keep in mind that there are 4 different airlines that fly to Siem Reap on a routine basis, so you have a few additional options to choose from.

Which stopover airport offers the lowest fares from London to Siem Reap?

Flights via Kuala Lumpur (KUL) offer the lowest average return price of £564.

Which stopover airport has the shortest travel time from London to Siem Reap?

Flights connecting via Bangkok (BKK) have the shortest average one-way travel time: 13h 55m.

When did momondo last update prices for flights from London to Siem Reap–Angkor Intl Airport?

Prices for flights from London to Siem Reap–Angkor Intl Airport are updated daily.

How old do you have to be to fly from London to Siem Reap–Angkor Intl Airport?

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from London to Siem Reap–Angkor Intl Airport.

What documentation or ID do you need to fly to Siem Reap–Angkor Intl Airport?

The travel and health documents you'll need for your trip to Siem Reap–Angkor Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Siem Reap–Angkor Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

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How to get the cheapest flight ticket from London to Siem Reap

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What is the cheapest month to fly to Siem Reap?

The month of March is, on average, the cheapest month to fly to Siem Reap from London, with most prices found around £748. If you don’t want to visit Siem Reap in March, then you should wait until January to fly from London, when ticket prices are also cheap, with an average price of £756.

Can stopping save me money on London to Siem Reap flights?

You could potentially save up to 11% on your flight if you consider stops on a London to Siem Reap flight.

How have London to Siem Reap flight prices changed over time?

As of September 2026, prices for London to Siem Reap flights are approximately 14% cheaper when compared to flights at the same time last year.

When to book flights from London to Siem Reap

Are you open to changing your travel dates? Check out the ideal times to fly from London to Siem Reap according to our flight data. Find out which month and days have the cheapest flights.

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Fastest flight time	14h 10m
Direct flights	None

The fastest flight from London to Siem Reap takes 14h 10m

There are no direct flights from London to Siem Reap. There are no popular flight routes from London to Siem Reap.

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Frequently asked questions about flying from London to Siem Reap

How far is London to Siem Reap–Angkor Intl by plane?
The straight-line distance from London to Siem Reap–Angkor Intl is 6077.6 mi. By plane, this route typically takes 14h 10m.
When did momondo last update prices for flights from London to Siem Reap–Angkor Intl Airport?
Prices for flights from London to Siem Reap–Angkor Intl Airport are updated daily.
How old do you have to be to fly from London to Siem Reap–Angkor Intl Airport?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from London to Siem Reap–Angkor Intl Airport.
What documentation or ID do you need to fly to Siem Reap–Angkor Intl Airport?
The travel and health documents you'll need for your trip to Siem Reap–Angkor Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Siem Reap–Angkor Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular airline from London to Siem Reap?
Based on momondo bookings for this flight route, the most popular airline on flight routes from London to Siem Reap is Singapore Airlines (57% of total bookings). The next most popular airlines are British Airways (19%), Vietnam Airlines (17%), and Austrian Airlines (7%).

Best airlines flying from London to Siem Reap

Compare and see reviews for airlines that fly from London to Siem Reap with momondo

Airline	Rating	Free Cancellation	Price
Austrian Airlines	PriceFrom £542	Free Cancellation	Rating 7.6 967 reviews	Search Austrian Airlines flights
Vietnam Airlines	PriceFrom £620	Free Cancellation	Rating 7.7 289 reviews	Search Vietnam Airlines flights
Singapore Airlines	PriceFrom £668	Free Cancellation	Rating 8.2 1,608 reviews	Search Singapore Airlines flights
Thai Airways	PriceFrom £895	Free Cancellation	Rating 7.9 423 reviews	Search Thai Airways flights

Why use momondo?

Why should I use momondo to find a flight deal from London to Siem Reap?

Finding the right flight to Siem Reap from London is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Siem Reap quick and easy, saving you time and money.

Can I find flights from London to Siem Reap with flexible booking policies on momondo?

Yes. All flights to Siem Reap from London on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from London to Siem Reap?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from London to Siem Reap.

I’m not ready to book a flight from London to Siem Reap right now. Can momondo alert me if prices change?

Yes. momondo can track prices for London to Siem Reap flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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How to get the cheapest flight ticket from London to Siem Reap

What is the cheapest month to fly to Siem Reap?

Can stopping save me money on London to Siem Reap flights?

How have London to Siem Reap flight prices changed over time?

Which airlines fly to Siem Reap?

Which airport is the most popular for stopovers for flights between London and Siem Reap?

Which stopover airport offers the lowest fares from London to Siem Reap?

Which stopover airport has the shortest travel time from London to Siem Reap?

Which stopover airport has the shortest connection time from London to Siem Reap?

When to book flights from London to Siem Reap

Cheap London to Siem Reap (LON to SAI) flight deals and tips

Fastest flight time

Direct flights

Frequently asked questions about flying from London to Siem Reap

Best airlines flying from London to Siem Reap

Compare and see reviews for airlines that fly from London to Siem Reap with momondo

Why use momondo?

An easier way to manage your Siem Reap trip

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Cambodia

Fly your favourite airline to Siem Reap

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Cabin classes currently available on flights to Siem Reap

List of cabin classes available on flights landing in Siem Reap. Availability may vary depending on flight origin and airline.

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