Cheap flights from England to Siem Reap from £329

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from England to Siem Reap departing on 21/11. 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
1 adult, Economy, 0 bags

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Find the cheapest flights from England to Siem Reap

Cheap return flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
19:30 - 18:55
LHR
-
SAI
17h 25m
2 stops
Multiple Airlines Logo
09:40 - 21:45
SAI
-
LHR
18h 05m
2 stops
£600Multiple Airlines
Tue, 1 Sep - Wed, 23 Sep
Austrian Airlines Logo
09:05 - 18:55
LHR
-
SAI
27h 50m
2 stops
Austrian Airlines Logo
19:35 - 08:20
SAI
-
LHR
18h 45m
2 stops
£601Austrian Airlines
Wed, 19 Aug - Wed, 16 Sep
SWISS Logo
08:45 - 18:55
LHR
-
SAI
28h 10m
2 stops
SWISS Logo
09:40 - 07:55
SAI
-
LHR
28h 15m
2 stops
£602SWISS
Tue, 15 Sep - Thu, 24 Sep
SWISS Logo
09:25 - 18:55
LGW
-
SAI
27h 30m
2 stops
SWISS Logo
09:40 - 08:25
SAI
-
LGW
28h 45m
2 stops
£602SWISS
Wed, 2 Sep - Wed, 23 Sep
SWISS Logo
12:10 - 18:55
LHR
-
SAI
24h 45m
2 stops
SWISS Logo
09:40 - 21:45
SAI
-
LHR
18h 05m
2 stops
£603SWISS
Wed, 2 Sep - Wed, 23 Sep
China Eastern Logo
10:30 - 21:00
LGW
-
SAI
51h 30m
2 stops
China Eastern Logo
22:00 - 06:30
SAI
-
LGW
39h 30m
3 stops
£605China Eastern
Thu, 12 Nov - Thu, 26 Nov
Multiple Airlines Logo
19:30 - 18:55
LHR
-
SAI
17h 25m
2 stops
Multiple Airlines Logo
09:40 - 21:45
SAI
-
LHR
18h 05m
2 stops
£615Multiple Airlines
Thu, 17 Sep - Wed, 23 Sep
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
£626China Eastern
Tue, 27 Oct - Sat, 21 Nov
Emirates Logo
21:05 - 21:30
STN
-
SAI
18h 25m
2 stops
Emirates Logo
12:55 - 12:55
SAI
-
STN
30h 00m
2 stops
£763Emirates
Wed, 19 Aug - Wed, 16 Sep
Emirates Logo
14:05 - 21:10
STN
-
SAI
24h 05m
2 stops
Emirates Logo
23:50 - 17:55
SAI
-
STN
25h 05m
2 stops
£767Emirates
Wed, 28 Oct - Sat, 21 Nov

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Emirates flights from England to Region of Siem Reap

Our best Emirates deals on England to Region of Siem Reap flight tickets
Emirates
19 Aug
STN21:05London Stansted
18h 25m
2 stops
SAI21:30Siem Reap–Angkor Intl
16 Sept
SAI12:55Siem Reap–Angkor Intl
30h 00m
2 stops
STN12:55London Stansted
£763
Emirates
28 Oct
STN14:05London Stansted
24h 05m
2 stops
SAI21:10Siem Reap–Angkor Intl
21 Nov
SAI23:50Siem Reap–Angkor Intl
25h 05m
2 stops
STN17:55London Stansted
£767
Emirates
17 Aug
STN14:55London Stansted
24h 35m
2 stops
SAI21:30Siem Reap–Angkor Intl
19 Sept
SAI23:50Siem Reap–Angkor Intl
24h 55m
2 stops
STN18:45London Stansted
£770

KLM flights from England to Region of Siem Reap

Our best KLM deals on England to Region of Siem Reap flight tickets
KLM
2 Sept
LCY08:25London City
21h 50m
2 stops
SAI12:15Siem Reap–Angkor Intl
23 Sept
SAI19:35Siem Reap–Angkor Intl
42h 20m
2 stops
LCY07:55London City
£1,105
KLM
19 Aug
LCY10:00London City
20h 15m
2 stops
SAI12:15Siem Reap–Angkor Intl
16 Sept
SAI19:35Siem Reap–Angkor Intl
42h 20m
2 stops
LCY07:55London City
£1,181
KLM
19 Aug
LCY10:00London City
20h 15m
2 stops
SAI12:15Siem Reap–Angkor Intl
16 Sept
SAI19:35Siem Reap–Angkor Intl
42h 20m
2 stops
LCY07:55London City
£1,193

momondo Fare Finder

 
Customise your flight search to find flights from England 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 19 June 2026.
Use the filters below to find and compare flights from England to Siem Reap that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight
Fastest return journey

LondonSiem Reap

LHR - SAI

LHRSAI

London Heathrow

Tue 1/9

19:30-18:55

2 stops17h 25m

Siem Reap–Angkor Intl

Wed 23/9

09:40-21:45

2 stops18h 05m

£600

LondonSiem Reap

LHR - SAI

LHRSAI

London Heathrow

Wed 19/8

09:05-18:55

2 stops27h 50m

Siem Reap–Angkor Intl

Wed 16/9

19:35-08:20

2 stops18h 45m

£601

LondonSiem Reap

LHR - SAI

LHRSAI

London Heathrow

Tue 15/9

08:45-18:55

2 stops28h 10m

Siem Reap–Angkor Intl

Thu 24/9

09:40-07:55

2 stops28h 15m

£602

LondonSiem Reap

LGW - SAI

LGWSAI

London Gatwick

Wed 2/9

09:25-18:55

2 stops27h 30m

Siem Reap–Angkor Intl

Wed 23/9

09:40-08:25

2 stops28h 45m

£602

LondonSiem Reap

LHR - SAI

LHRSAI

London Heathrow

Wed 2/9

12:10-18:55

2 stops24h 45m

Siem Reap–Angkor Intl

Wed 23/9

09:40-21:45

2 stops18h 05m

£603

LondonSiem Reap

LGW - SAI

LGWSAI

London Gatwick

Thu 12/11

10:30-21:00

2 stops51h 30m

Siem Reap–Angkor Intl

Thu 26/11

22:00-06:30

3 stops39h 30m

£605

LondonSiem Reap

LHR - SAI

LHRSAI

London Heathrow

Thu 17/9

19:30-18:55

2 stops17h 25m

Siem Reap–Angkor Intl

Wed 23/9

09:40-21:45

2 stops18h 05m

£615

LondonSiem Reap

LGW - SAI

LGWSAI

London Gatwick

Tue 27/10

10:30-21:00

2 stops51h 30m

Siem Reap–Angkor Intl

Sat 21/11

22:00-14:00

2 stops47h 00m

£626

LondonSiem Reap

STN - SAI

STNSAI

London Stansted

Wed 19/8

21:05-21:30

2 stops18h 25m

Siem Reap–Angkor Intl

Wed 16/9

12:55-12:55

2 stops30h 00m

£763

LondonSiem Reap

STN - SAI

STNSAI

London Stansted

Wed 28/10

14:05-21:10

2 stops24h 05m

Siem Reap–Angkor Intl

Sat 21/11

23:50-17:55

2 stops25h 05m

£767

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 England 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

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

If you’re not able to fly to Region of Siem Reap in December, then November is your next best option. Flight prices from England to Region of Siem Reap during November average around £189.

Can stopping save me money on England to Region of Siem Reap flights?

You could potentially save up to 55% on your flight if you consider stops on a England to Region of Siem Reap flight.

Cheap England to Region of Siem Reap flight deals and tips

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

Fastest flight time

17h 25m

Direct flights

None
The fastest flight from England to Region of Siem Reap takes 17h 25m
There are no direct flights from England to Region of Siem Reap. There are no popular flight routes from England to Region of Siem Reap.

Frequently asked questions about flying from England to Siem Reap

  • When did momondo last update prices for flights from England to Siem Reap?

    Prices for flights from England to Siem Reap were last updated today.

  • How many operators does momondo search for flights from England to Siem Reap?

  • How old do you have to be to fly from England to Siem Reap?

    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 England to Siem Reap.

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

    The travel and health documents required for your trip to Siem Reap can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Siem Reap. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Best airlines flying from England to Region of Siem Reap

Compare and see reviews for airlines that fly from England to Region of Siem Reap with momondo
Airline
Rating
Free Cancellation
Price
Austrian AirlinesPriceFrom £547Free CancellationRating
7.6
937 reviews
Search Austrian Airlines flights
Vietnam AirlinesPriceFrom £625Free CancellationRating
7.7
272 reviews
Search Vietnam Airlines flights
Singapore AirlinesPriceFrom £673Free CancellationRating
8.2
1,545 reviews
Search Singapore Airlines flights
Thai AirwaysPriceFrom £834Free CancellationRating
7.9
407 reviews
Search Thai Airways flights
EmiratesPriceFrom £864Free CancellationRating
8.1
3,592 reviews
Search Emirates flights

Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Siem Reap from England.

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

Yes. momondo enables you to select and highlight flights to Siem Reap from England with this policy.

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

momondo helps you find the best flight between England 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 England to Siem Reap right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Siem Reap from England. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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1 adult
Sun 19/7
Sun 26/7

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