Cheap flights from London Gatwick Airport to Siem Reap from £303

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 29/6. 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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Cheap return flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
10:05 - 14:30
LGW
-
SAI
22h 25m
2 stops
Multiple Airlines Logo
10:00 - 06:40
SAI
-
LGW
26h 40m
2 stops
£858Multiple Airlines
Sun, 5 Apr - Fri, 1 May
Multiple Airlines Logo
09:45 - 14:50
LGW
-
SAI
23h 05m
2 stops
Multiple Airlines Logo
15:35 - 21:30
SAI
-
LGW
35h 55m
2 stops
£859Multiple Airlines
Sat, 4 Apr - Thu, 30 Apr
Multiple Airlines Logo
21:30 - 11:10
LGW
-
SAI
31h 40m
3 stops
Multiple Airlines Logo
11:55 - 08:45
SAI
-
LGW
26h 50m
2 stops
£865Multiple Airlines
Sat, 4 Apr - Thu, 30 Apr
Multiple Airlines Logo
10:05 - 14:30
LGW
-
SAI
22h 25m
2 stops
Multiple Airlines Logo
10:00 - 06:40
SAI
-
LGW
26h 40m
2 stops
£909Multiple Airlines
Sun, 5 Apr - Fri, 1 May
Qatar Airways Logo
09:00 - 18:45
LGW
-
SAI
27h 45m
2 stops
Qatar Airways Logo
19:30 - 13:25
SAI
-
LGW
23h 55m
2 stops
£912Qatar Airways
Sat, 16 May - Sat, 30 May
Singapore Airlines Logo
10:15 - 09:40
LGW
-
SAI
17h 25m
1 stop
Singapore Airlines Logo
10:30 - 06:55
SAI
-
LGW
50h 25m
1 stop
£925Singapore Airlines
Sat, 16 May - Sat, 30 May
Multiple Airlines Logo
06:25 - 14:50
LGW
-
SAI
26h 25m
3 stops
Multiple Airlines Logo
10:00 - 06:40
SAI
-
LGW
26h 40m
2 stops
£947Multiple Airlines
Sun, 5 Apr - Fri, 1 May
Multiple Airlines Logo
11:35 - 18:45
LGW
-
SAI
25h 10m
2 stops
Multiple Airlines Logo
19:30 - 06:40
SAI
-
LGW
41h 10m
2 stops
£986Multiple Airlines
Sun, 5 Apr - Sun, 12 Apr
Multiple Airlines Logo
08:10 - 12:15
LGW
-
SAI
22h 05m
2 stops
Multiple Airlines Logo
19:30 - 13:25
SAI
-
LGW
23h 55m
2 stops
£993Multiple Airlines
Sun, 5 Apr - Sun, 3 May
Multiple Airlines Logo
10:15 - 09:40
LGW
-
SAI
17h 25m
1 stop
Multiple Airlines Logo
12:55 - 08:45
SAI
-
LGW
25h 50m
2 stops
£1,016Multiple Airlines
Sat, 16 May - Sat, 30 May

Qatar Airways flights from London Gatwick Airport to Region of Siem Reap

Our best Qatar Airways deals on London Gatwick Airport to Region of Siem Reap flight tickets
Qatar Airways
16 May
LGW09:00London Gatwick
27h 45m
2 stops
SAI18:45Siem Reap–Angkor Intl
30 May
SAI19:30Siem Reap–Angkor Intl
23h 55m
2 stops
LGW13:25London Gatwick
£912
Qatar Airways
5 Apr
LGW14:55London Gatwick
21h 50m
2 stops
SAI18:45Siem Reap–Angkor Intl
3 May
SAI19:30Siem Reap–Angkor Intl
23h 55m
2 stops
LGW13:25London Gatwick
£1,088
Qatar Airways
8 Mar
LGW08:40London Gatwick
17h 35m
2 stops
SAI09:15Siem Reap–Angkor Intl
1 Apr
SAI19:30Siem Reap–Angkor Intl
23h 55m
2 stops
LGW13:25London Gatwick
£1,089

Singapore Airlines flights from London Gatwick Airport to Region of Siem Reap

Our best Singapore Airlines deals on London Gatwick Airport to Region of Siem Reap flight tickets
Singapore Airlines
16 May
LGW10:15London Gatwick
17h 25m
1 stop
SAI09:40Siem Reap–Angkor Intl
30 May
SAI10:30Siem Reap–Angkor Intl
50h 25m
1 stop
LGW06:55London Gatwick
£925
Singapore Airlines
5 Apr
LGW10:15London Gatwick
17h 25m
1 stop
SAI09:40Siem Reap–Angkor Intl
1 May
SAI16:00Siem Reap–Angkor Intl
20h 55m
1 stop
LGW06:55London Gatwick
£1,028
Singapore Airlines
4 Apr
LGW10:15London Gatwick
17h 25m
1 stop
SAI09:40Siem Reap–Angkor Intl
30 Apr
SAI10:30Siem Reap–Angkor Intl
26h 25m
1 stop
LGW06:55London Gatwick
£1,061

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 7 March 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

Cheapest return flight

LondonSiem Reap

LGW - SAI

LGWSAI

London Gatwick

Sun 5/4

10:05-14:30

2 stops22h 25m

Siem Reap–Angkor Intl

Fri 1/5

10:00-06:40

2 stops26h 40m

£858

LondonSiem Reap

LGW - SAI

LGWSAI

London Gatwick

Sat 4/4

09:45-14:50

2 stops23h 05m

Siem Reap–Angkor Intl

Thu 30/4

15:35-21:30

2 stops35h 55m

£859

LondonSiem Reap

LGW - SAI

LGWSAI

London Gatwick

Sat 4/4

21:30-11:10

3 stops31h 40m

Siem Reap–Angkor Intl

Thu 30/4

11:55-08:45

2 stops26h 50m

£865

LondonSiem Reap

LGW - SAI

LGWSAI

London Gatwick

Sun 5/4

10:05-14:30

2 stops22h 25m

Siem Reap–Angkor Intl

Fri 1/5

10:00-06:40

2 stops26h 40m

£909

LondonSiem Reap

LGW - SAI

LGWSAI

London Gatwick

Sat 16/5

09:00-18:45

2 stops27h 45m

Siem Reap–Angkor Intl

Sat 30/5

19:30-13:25

2 stops23h 55m

£912

LondonSiem Reap

LGW - SAI

LGWSAI

London Gatwick

Sat 16/5

10:15-09:40

1 stop17h 25m

Siem Reap–Angkor Intl

Sat 30/5

10:30-06:55

1 stop50h 25m

£925

LondonSiem Reap

LGW - SAI

LGWSAI

London Gatwick

Sun 5/4

06:25-14:50

3 stops26h 25m

Siem Reap–Angkor Intl

Fri 1/5

10:00-06:40

2 stops26h 40m

£947

LondonSiem Reap

LGW - SAI

LGWSAI

London Gatwick

Sun 5/4

11:35-18:45

2 stops25h 10m

Siem Reap–Angkor Intl

Sun 12/4

19:30-06:40

2 stops41h 10m

£986

LondonSiem Reap

LGW - SAI

LGWSAI

London Gatwick

Sun 5/4

08:10-12:15

2 stops22h 05m

Siem Reap–Angkor Intl

Sun 3/5

19:30-13:25

2 stops23h 55m

£993
Fastest return journey

LondonSiem Reap

LGW - SAI

LGWSAI

London Gatwick

Sat 16/5

10:15-09:40

1 stop17h 25m

Siem Reap–Angkor Intl

Sat 30/5

12:55-08:45

2 stops25h 50m

£1,016

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

17h 25m

Direct flights

None
The fastest flight from London Gatwick Airport to Region of Siem Reap takes 17h 25m
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.
  • 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 £698Free CancellationRating
8.2
1,470 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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1 adult
Mon 6/4
Mon 13/4

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