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Cheap flights from London Gatwick Airport to Siem Reap from £312

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from London Gatwick Airport to Siem Reap departing on 10/4. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags
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Find the cheapest flights from London Gatwick Airport to Siem Reap

Cheap return flights

Enter your travel dates to find the best prices.
SWISS Logo
09:15 - 18:45
LGW
-
SAI
27h 30m
2 stops
SWISS Logo
09:40 - 08:20
SAI
-
LGW
28h 40m
2 stops
£541SWISS
Wed, 3 Jun - Wed, 10 Jun
China Eastern Logo
10:30 - 21:00
LGW
-
SAI
51h 30m
2 stops
China Eastern Logo
22:00 - 14:00
SAI
-
LGW
47h 00m
2 stops
£599China Eastern
Tue, 3 Mar - Thu, 26 Mar
China Eastern Logo
10:30 - 21:00
LGW
-
SAI
27h 30m
3 stops
China Eastern Logo
22:00 - 14:00
SAI
-
LGW
47h 00m
2 stops
£641China Eastern
Wed, 18 Feb - Sat, 7 Mar
SWISS Logo
09:25 - 18:45
LGW
-
SAI
27h 20m
2 stops
SWISS Logo
16:00 - 08:25
SAI
-
LGW
22h 25m
2 stops
£643SWISS
Tue, 14 Apr - Sun, 26 Apr
China Eastern Logo
18:25 - 20:10
LGW
-
SAI
43h 45m
3 stops
China Eastern Logo
21:10 - 15:10
SAI
-
LGW
48h 00m
3 stops
£652China Eastern
Wed, 3 Jun - Wed, 10 Jun
Singapore Airlines Logo
09:20 - 09:50
LGW
-
SAI
17h 30m
1 stop
Singapore Airlines Logo
16:45 - 06:25
SAI
-
LGW
20h 40m
1 stop
£653Singapore Airlines
Thu, 26 Feb - Wed, 25 Mar
China Eastern Logo
10:30 - 21:00
LGW
-
SAI
27h 30m
2 stops
China Eastern Logo
21:10 - 15:00
SAI
-
LGW
47h 50m
2 stops
£665China Eastern
Mon, 16 Mar - Mon, 30 Mar
SWISS Logo
09:15 - 18:45
LGW
-
SAI
27h 30m
2 stops
SWISS Logo
16:00 - 08:25
SAI
-
LGW
22h 25m
2 stops
£668SWISS
Mon, 13 Apr - Sun, 26 Apr
SWISS Logo
09:15 - 18:45
LGW
-
SAI
27h 30m
2 stops
SWISS Logo
16:00 - 08:25
SAI
-
LGW
22h 25m
2 stops
£669SWISS
Mon, 13 Apr - Sun, 26 Apr
China Eastern Logo
10:30 - 21:00
LGW
-
SAI
27h 30m
3 stops
China Eastern Logo
22:00 - 14:00
SAI
-
LGW
47h 00m
2 stops
£690China Eastern
Mon, 16 Mar - Thu, 26 Mar

SWISS flights from London Gatwick Airport to Region of Siem Reap

Our best SWISS deals on London Gatwick Airport to Region of Siem Reap flight tickets
SWISS
3 Jun
LGW09:15London Gatwick
27h 30m
2 stops
SAI18:45Siem Reap–Angkor Intl
10 Jun
SAI09:40Siem Reap–Angkor Intl
28h 40m
2 stops
LGW08:20London Gatwick
£541
SWISS
13 Apr
LGW09:15London Gatwick
27h 30m
2 stops
SAI18:45Siem Reap–Angkor Intl
26 Apr
SAI16:00Siem Reap–Angkor Intl
22h 25m
2 stops
LGW08:25London Gatwick
£668
SWISS
7 Apr
LGW09:25London Gatwick
27h 20m
2 stops
SAI18:45Siem Reap–Angkor Intl
26 Apr
SAI16:00Siem Reap–Angkor Intl
22h 25m
2 stops
LGW08:25London Gatwick
£709

China Eastern flights from London Gatwick Airport to Region of Siem Reap

Our best China Eastern deals on London Gatwick Airport to Region of Siem Reap flight tickets
China Eastern
18 Feb
LGW10:30London Gatwick
27h 30m
3 stops
SAI21:00Siem Reap–Angkor Intl
7 Mar
SAI22:00Siem Reap–Angkor Intl
47h 00m
2 stops
LGW14:00London Gatwick
£641
China Eastern
3 Jun
LGW18:25London Gatwick
43h 45m
3 stops
SAI20:10Siem Reap–Angkor Intl
10 Jun
SAI21:10Siem Reap–Angkor Intl
48h 00m
3 stops
LGW15:10London Gatwick
£652
China Eastern
16 Mar
LGW10:30London Gatwick
27h 30m
3 stops
SAI21:00Siem Reap–Angkor Intl
30 Mar
SAI21:10Siem Reap–Angkor Intl
47h 50m
2 stops
LGW15:00London Gatwick
£665

momondo Fare Finder

 
Customise your flight search to find flights from London Gatwick Airport to Region of Siem Reap that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 279,928 searches. Data last updated 20 January 2026.
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

LondonSiem Reap

LGW - SAI

LGWSAI

London Gatwick

Wed 3/6

09:15-18:45

2 stops27h 30m

Siem Reap–Angkor Intl

Wed 10/6

09:40-08:20

2 stops28h 40m

£541

LondonSiem Reap

LGW - SAI

LGWSAI

London Gatwick

Tue 3/3

10:30-21:00

2 stops51h 30m

Siem Reap–Angkor Intl

Thu 26/3

22:00-14:00

2 stops47h 00m

£599

LondonSiem Reap

LGW - SAI

LGWSAI

London Gatwick

Wed 18/2

10:30-21:00

3 stops27h 30m

Siem Reap–Angkor Intl

Sat 7/3

22:00-14:00

2 stops47h 00m

£641

LondonSiem Reap

LGW - SAI

LGWSAI

London Gatwick

Tue 14/4

09:25-18:45

2 stops27h 20m

Siem Reap–Angkor Intl

Sun 26/4

16:00-08:25

2 stops22h 25m

£643

LondonSiem Reap

LGW - SAI

LGWSAI

London Gatwick

Wed 3/6

18:25-20:10

3 stops43h 45m

Siem Reap–Angkor Intl

Wed 10/6

21:10-15:10

3 stops48h 00m

£652

LondonSiem Reap

LGW - SAI

LGWSAI

London Gatwick

Thu 26/2

09:20-09:50

1 stop17h 30m

Siem Reap–Angkor Intl

Wed 25/3

16:45-06:25

1 stop20h 40m

£653

LondonSiem Reap

LGW - SAI

LGWSAI

London Gatwick

Mon 16/3

10:30-21:00

2 stops27h 30m

Siem Reap–Angkor Intl

Mon 30/3

21:10-15:00

2 stops47h 50m

£665

LondonSiem Reap

LGW - SAI

LGWSAI

London Gatwick

Mon 13/4

09:15-18:45

2 stops27h 30m

Siem Reap–Angkor Intl

Sun 26/4

16:00-08:25

2 stops22h 25m

£668

LondonSiem Reap

LGW - SAI

LGWSAI

London Gatwick

Mon 13/4

09:15-18:45

2 stops27h 30m

Siem Reap–Angkor Intl

Sun 26/4

16:00-08:25

2 stops22h 25m

£669

LondonSiem Reap

LGW - SAI

LGWSAI

London Gatwick

Mon 16/3

10:30-21:00

3 stops27h 30m

Siem Reap–Angkor Intl

Thu 26/3

22:00-14:00

2 stops47h 00m

£690

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Siem Reap from

How to get the cheapest flight ticket from London Gatwick Airport to Region of Siem Reap

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Can stopping save me money on London Gatwick Airport to Region of Siem Reap flights?

You could potentially save up to 7% on your flight if you consider stops on a London Gatwick Airport to Region of Siem Reap flight.

Cheap London Gatwick Airport to Region of Siem Reap flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from London Gatwick Airport to Region of Siem Reap

Fastest flight time

24h 40m

Direct flights

None
The fastest flight from London Gatwick Airport to Region of Siem Reap takes 24h 40m
There are no direct flights from London Gatwick Airport to Region of Siem Reap. There are no popular flight routes from London Gatwick Airport to Region of Siem Reap.
Search flight deals

  • When did momondo last update prices for flights from London Gatwick Airport to Siem Reap?

    Prices for flights from London Gatwick Airport to Siem Reap refresh daily.

  • How many operators does momondo search for flights from London Gatwick Airport to Siem Reap?

  • How old do you have to be to fly from London Gatwick Airport to Siem Reap?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from London Gatwick Airport to Siem Reap.

  • What documentation or ID do you need to fly to Siem Reap?

    The required travel and health documents for your Siem Reap trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Siem Reap. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best airlines flying from London Gatwick Airport to Region of Siem Reap

Compare and see reviews for airlines that fly from London Gatwick Airport to Region of Siem Reap with momondo
Airline
Rating
Free Cancellation
Price
Singapore AirlinesPriceFrom £696Free CancellationRating
8.1
1,433 reviews
Search Singapore Airlines flights

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from London to Siem Reap . Millions of users trust and use momondo every year so you are in good hands.

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

Yes. momondo allows you to filter the results for London to Siem Reap flights to just show those with flexible booking policies.

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

momondo helps you find the best flight between London and Siem Reap by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

If you are not ready to book a flight from London to Siem Reap now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Siem Reap and let you know when they change.

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