How long is the flight from London Gatwick Airport to Siem Reap?

SWISS and British Airways can get you from London Gatwick Airport to Siem Reap in just under 14h 25m. Your travel time can differ by up to 12h 45m. The distance between London Gatwick Airport and Siem Reap is about 6102 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

What is the cheapest airline to fly from London Gatwick Airport to Siem Reap round-trip?

Currently priced at £715, Singapore Airlines will fly you from London Gatwick Airport to Siem Reap and back. In addition to Singapore Airlines, many other airlines offer competitively priced options for your trip.

In terms of precipitation, rainfall in 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 Siem Reap when rainfall is around 0.0 mm.

If weather is an important factor for your trip to 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).

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

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from London Gatwick Airport to Siem Reap as you normally would.

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

Most people fly into Siem Reap–Angkor Intl (SAI) if they book a flight to Siem Reap from London Gatwick. On average, Siem Reap–Angkor Intl has 0 inbound flights from London Gatwick per day from 1 airline. Siem Reap–Angkor Intl is conveniently located just 24.7 mi from Siem Reap’s city center.

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

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

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

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

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

Yes. Cheapflights offers flight deals from Gatwick 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.

£301+ Cheap Flights from London Gatwick Airport to Siem Reap, Cambodia

Cheap flight deals from Gatwick to Siem Reap

Enter your travel dates to find the best prices.

Cheapest

Best

Last-minute

One-way

Cheapest flights from Gatwick to Siem Reap
Explore the most affordable flight options available from Gatwick to Siem Reap. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 1 September 2026.

Thu 10/911:15 -

2 stops24h 50m

Thu 8/1019:05 -

2 stops41h 55m

Deal found 28/8£529

Mon 16/1111:35 -

2 stops23h 30m

Mon 30/1119:05 -

2 stops42h 50m

Deal found 26/8£560

Mon 30/1111:35 -

2 stops23h 30m

Sun 13/1213:20 -

1 stop33h 15m

Deal found 28/8£647

Thu 3/911:15 -

2 stops24h 50m

Thu 24/912:55 -

2 stops24h 00m

Deal found 29/8£653

Mon 16/1118:40 -

2 stops32h 15m

Mon 30/1116:50 -

2 stops22h 00m

Deal found 29/8£666

Sun 29/1111:35 -

2 stops23h 30m

Tue 15/1209:50 -

1 stop18h 15m

Deal found 28/8£678

Mon 30/1111:05 -

2 stops22h 50m

Tue 15/1209:50 -

1 stop18h 15m

Deal found 28/8£684

Wed 18/1111:35 -

2 stops25h 05m

Thu 3/1209:55 -

1 stop18h 10m

Deal found 26/8£687

Wed 2/1211:35 -

2 stops22h 20m

Tue 15/1209:50 -

1 stop18h 15m

Deal found 28/8£689

Mon 16/1111:05 -

2 stops22h 50m

Thu 3/1209:55 -

1 stop18h 10m

Deal found 26/8£690

Find flight deals from Gatwick to Siem Reap

Round-trip from	£529
One-way from	£301
Popular in	December
Cheapest in	July
Average price	£765

10/9-8/10
4 total stops
66h 45m total
London to Siem Reap

Search Deals

7/9
3 total stops
39h 50m total
London to Siem Reap

Search Deals

Highest demand for flights based on searches. 9% potential increase in price (£62 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 4% potential price decrease (£24 potential savings vs. average return price).

Search Deals

Average for round-trip flights in September 2026

Search Deals

Cheapflights Fare Finder

Use the filters below to find and compare flights from London Gatwick Airport to Siem Reap that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonSiem Reap

LGW London Gatwick - SAI Siem Reap–Angkor Intl

LGWSAI

London Gatwick

Mon 30/11

08:35-18:45

2 stops27h 10m

Siem Reap–Angkor Intl

Sun 13/12

09:55-07:50

2 stops28h 55m

£753

Fastest return journey

LondonSiem Reap

LGW London Gatwick - SAI Siem Reap–Angkor Intl

LGWSAI

London Gatwick

Thu 3/12

21:20-18:45

1 stop14h 25m

Siem Reap–Angkor Intl

Mon 14/12

19:25-05:25

1 stop17h 00m

£754

LondonSiem Reap

LGW London Gatwick - SAI Siem Reap–Angkor Intl

LGWSAI

London Gatwick

Tue 1/12

21:20-18:45

1 stop14h 25m

Siem Reap–Angkor Intl

Fri 11/12

19:25-05:25

1 stop17h 00m

£754

LondonSiem Reap

LGW London Gatwick - SAI Siem Reap–Angkor Intl

LGWSAI

London Gatwick

Tue 17/11

21:20-18:45

1 stop14h 25m

Siem Reap–Angkor Intl

Tue 1/12

19:25-05:25

1 stop17h 00m

£766

LondonSiem Reap

LGW London Gatwick - SAI Siem Reap–Angkor Intl

LGWSAI

London Gatwick

Thu 3/12

23:55-21:10

2 stops38h 15m

Siem Reap–Angkor Intl

Mon 14/12

13:20-11:40

2 stops29h 20m

£811

LondonSiem Reap

LGW London Gatwick - SAI Siem Reap–Angkor Intl

LGWSAI

London Gatwick

Fri 13/11

09:40-21:10

2 stops28h 30m

Siem Reap–Angkor Intl

Sat 28/11

23:50-06:40

2 stops37h 50m

£842

LondonSiem Reap

LGW London Gatwick - SAI Siem Reap–Angkor Intl

LGWSAI

London Gatwick

Thu 1/10

07:30-09:00

2 stops19h 30m

Siem Reap–Angkor Intl

Wed 7/10

19:35-09:55

2 stops20h 20m

£953

Cheapest one-way

LondonSiem Reap

LGW London Gatwick - SAI Siem Reap–Angkor Intl

LGWSAI

London Gatwick

Wed 14/10

16:55-09:15

2 stops34h 20m

£422

LondonSiem Reap

LGW London Gatwick - SAI Siem Reap–Angkor Intl

LGWSAI

London Gatwick

Wed 27/1

09:50-16:05

1 stop23h 15m

£427

LondonSiem Reap

LGW London Gatwick - SAI Siem Reap–Angkor Intl

LGWSAI

London Gatwick

Mon 12/10

11:40-18:05

2 stops24h 25m

£438

Flights are sorted by cheapest return flights first.

Deals found on 27/8

Showing 1-10 of 15 resultsSorted by cheapest first

Best time to book a flight from Gatwick to Siem Reap

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

LGW-SAI

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.

Reviews of airlines servicing Siem Reap

See what other customers who have flown with Singapore Airlines from London Gatwick Airport to Siem Reap have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Singapore Airlines

8.2

Very Good

1,591 reviews

Check prices

Reviews

1 / 20

6.0

Good

Anonymous,Feb 2026

SAI - SIN

The only issue we had was seat selection. Was not easy to change, after they assigned seats. Also, the premium economy seats, are nothing special.. All and all safe flight with minor back issues.

Singapore Airlines

8.2

Very Good

1,591 reviews

Singapore Airlines

8.2

Very Good

1,591 reviews

Check prices

Reviews

1 / 20

6.0

Good

Anonymous,Feb 2026

SAI - SIN

The only issue we had was seat selection. Was not easy to change, after they assigned seats. Also, the premium economy seats, are nothing special.. All and all safe flight with minor back issues.

Related info for your journey

What airport do you fly into for flights to Siem Reap from London Gatwick?
Most people fly into Siem Reap–Angkor Intl (SAI) if they book a flight to Siem Reap from London Gatwick. On average, Siem Reap–Angkor Intl has 0 inbound flights from London Gatwick per day from 1 airline. Siem Reap–Angkor Intl is conveniently located just 24.7 mi from Siem Reap’s city center.
How long is the flight from London Gatwick Airport to Siem Reap?
SWISS and British Airways can get you from London Gatwick Airport to Siem Reap in just under 14h 25m. Your travel time can differ by up to 12h 45m. The distance between London Gatwick Airport and Siem Reap is about 6102 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.
What is the cheapest airline to fly from London Gatwick Airport to Siem Reap round-trip?
Currently priced at £715, Singapore Airlines will fly you from London Gatwick Airport to Siem Reap and back. In addition to Singapore Airlines, many other airlines offer competitively priced options for your trip.
Can I find deals for flights from Gatwick to Siem Reap that include hotel bookings?
Yes. In addition to deals on Gatwick to Siem Reap flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Gatwick to Siem Reap?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Gatwick to Siem Reap.
Can I find deals for business class flights from Gatwick to Siem Reap?
Yes. Cheapflights offers flight deals from Gatwick 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.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Alternative routes

Complete your trip

Flights by cabin class

Other flight options

Other flights from Gatwick

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Alternative routes for Gatwick to Siem Reap

Heathrow to Siem Reap flights

Stansted to Siem Reap flights

London City to Siem Reap flights

Luton to Siem Reap flights

Top airline flying from Gatwick to Siem Reap

Airline	Cheapest	Average	Flexibility	On-time
Singapore Airlines	Cheapest£715	Average£1,051	FlexibilityNo cancel fee	On-time81%	Search Singapore Airlines flights

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

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Siem Reap from Gatwick today with Cheapflights!

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

Cheapflights simply makes it quick and affordable to book flights from Gatwick to Siem Reap by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

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

Cheapflights does show flights with no change fees to all users. To see these options for flights from Gatwick to Siem Reap, users can toggle the no change fees filter when performing a flight search.

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

Of course! You can now track prices for flights from Gatwick to Siem Reap and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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Cheap flights from London Gatwick Airport to Siem Reap, Cambodia from £301

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 7/9. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Gatwick to Siem Reap

Cheapest flights from Gatwick to Siem ReapExplore the most affordable flight options available from Gatwick to Siem Reap. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 1 September 2026.

Explore the most affordable flight options available from Gatwick to Siem Reap. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 1 September 2026.

Best flights from Gatwick to Siem ReapDiscover carefully curated flight deals from Gatwick to Siem Reap that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 1 September 2026.

Discover carefully curated flight deals from Gatwick to Siem Reap that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 1 September 2026.

Last-minute flights from Gatwick to Siem ReapDiscover last-minute flight deals from Gatwick to Siem Reap. Data last updated 1 September 2026 and is based on user searches.

Discover last-minute flight deals from Gatwick to Siem Reap. Data last updated 1 September 2026 and is based on user searches.

One-way flights from Gatwick to Siem ReapSearch for one-way flight options from Gatwick to Siem Reap. Find affordable one-way fares based on user searches. Data last updated 1 September 2026.

Search for one-way flight options from Gatwick to Siem Reap. Find affordable one-way fares based on user searches. Data last updated 1 September 2026.

Find flight deals from Gatwick to Siem Reap

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Cheapflights Fare Finder

Use the filters below to find and compare flights from London Gatwick Airport to Siem Reap that are best for you.

Best time to book a flight from Gatwick to Siem Reap

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

Reviews of airlines servicing Siem Reap

See what other customers who have flown with Singapore Airlines from London Gatwick Airport to Siem Reap have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

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

How long is the flight from London Gatwick Airport to Siem Reap?

What is the cheapest airline to fly from London Gatwick Airport to Siem Reap round-trip?

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

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

Can I find deals for business class flights from Gatwick 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 Gatwick 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.

Search flights from Gatwick to Siem Reap by cabin class

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

Gatwick and Siem Reap flights

Browse other Gatwick and Siem Reap flight options. Last updated on 1 September 2026.

Other flights from Gatwick

Browse through other flights departing from Gatwick. Flights are based on user searches made on Cheapflights and were last updated on 1 September 2026.

Popular flight searches

Check out other popular destinations found by fellow travellers in 2026

Top airline flying from Gatwick to Siem Reap

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

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

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

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

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Cheapest flights from Gatwick to Siem Reap
Explore the most affordable flight options available from Gatwick to Siem Reap. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 1 September 2026.

Best flights from Gatwick to Siem Reap
Discover carefully curated flight deals from Gatwick to Siem Reap that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 1 September 2026.

Last-minute flights from Gatwick to Siem Reap
Discover last-minute flight deals from Gatwick to Siem Reap. Data last updated 1 September 2026 and is based on user searches.

One-way flights from Gatwick to Siem Reap
Search for one-way flight options from Gatwick to Siem Reap. Find affordable one-way fares based on user searches. Data last updated 1 September 2026.