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Cheap flights from London Luton Airport to Siem Reap from £285

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 Luton Airport to Siem Reap departing on 17/3. 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 Luton Airport to Siem Reap

Cheap return flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
07:05 - 14:50
LTN
-
SAI
25h 45m
2 stops
Multiple Airlines Logo
15:35 - 11:00
SAI
-
LTN
25h 25m
3 stops
£1,032Multiple Airlines
Tue, 7 Apr - Tue, 28 Apr
Multiple Airlines Logo
07:20 - 08:45
LTN
-
SAI
18h 25m
2 stops
Multiple Airlines Logo
14:50 - 10:25
SAI
-
LTN
26h 35m
3 stops
£1,069Multiple Airlines
Mon, 16 Mar - Tue, 17 Mar
Multiple Airlines Logo
07:20 - 08:45
LTN
-
SAI
18h 25m
3 stops
Multiple Airlines Logo
14:50 - 10:25
SAI
-
LTN
26h 35m
3 stops
£1,178Multiple Airlines
Mon, 16 Mar - Tue, 17 Mar
Multiple Airlines Logo
09:15 - 17:30
LTN
-
SAI
25h 15m
3 stops
Multiple Airlines Logo
23:50 - 21:10
SAI
-
LTN
27h 20m
3 stops
£1,469Multiple Airlines
Fri, 27 Mar - Sat, 11 Apr
Multiple Airlines Logo
07:00 - 20:30
LTN
-
SAI
30h 30m
2 stops
Multiple Airlines Logo
23:50 - 18:00
SAI
-
LTN
24h 10m
3 stops
£1,570Multiple Airlines
Fri, 27 Mar - Sat, 11 Apr

momondo Fare Finder

 
Customise your flight search to find flights from London Luton 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 5 March 2026.
Use the filters below to find and compare flights from London Luton Airport to Siem Reap that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonSiem Reap

LTN - SAI

LTNSAI

London Luton

Tue 7/4

07:05-14:50

2 stops25h 45m

Siem Reap–Angkor Intl

Tue 28/4

15:35-11:00

3 stops25h 25m

£1,032
Fastest return journey

LondonSiem Reap

LTN - SAI

LTNSAI

London Luton

Mon 16/3

07:20-08:45

2 stops18h 25m

Siem Reap–Angkor Intl

Tue 17/3

14:50-10:25

3 stops26h 35m

£1,069

LondonSiem Reap

LTN - SAI

LTNSAI

London Luton

Mon 16/3

07:20-08:45

3 stops18h 25m

Siem Reap–Angkor Intl

Tue 17/3

14:50-10:25

3 stops26h 35m

£1,178

LondonSiem Reap

LTN - SAI

LTNSAI

London Luton

Fri 27/3

09:15-17:30

3 stops25h 15m

Siem Reap–Angkor Intl

Sat 11/4

23:50-21:10

3 stops27h 20m

£1,469

LondonSiem Reap

LTN - SAI

LTNSAI

London Luton

Fri 27/3

07:00-20:30

2 stops30h 30m

Siem Reap–Angkor Intl

Sat 11/4

23:50-18:00

3 stops24h 10m

£1,570
Cheapest one-way

LondonSiem Reap

LTN - SAI

LTNSAI

London Luton

Tue 17/3

20:50-08:20

3 stops52h 30m

£285

LondonSiem Reap

LTN - SAI

LTNSAI

London Luton

Mon 13/4

07:00-14:30

3 stops49h 30m

£298

LondonSiem Reap

LTN - SAI

LTNSAI

London Luton

Tue 28/4

06:35-14:50

3 stops50h 15m

£304

LondonSiem Reap

LTN - SAI

LTNSAI

London Luton

Sun 3/5

06:20-14:50

3 stops50h 30m

£316

LondonSiem Reap

LTN - SAI

LTNSAI

London Luton

Fri 13/3

20:50-08:45

3 stops52h 55m

£319

Flights are sorted by cheapest return flights first.

Showing 1-10 of 15 resultsSorted by cheapest first
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Cheap London Luton Airport to Region of Siem Reap flight deals and tips

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

Fastest flight time

18h 25m

Direct flights

None
The fastest flight from London Luton Airport to Region of Siem Reap takes 18h 25m
There are no direct flights from London Luton Airport to Region of Siem Reap. There are no popular flight routes from London Luton Airport to Region of Siem Reap.
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  • When did momondo last update prices for flights from London Luton Airport to Siem Reap?

    Prices for flights from London Luton Airport to Siem Reap were last updated today.

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

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from London Luton Airport 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.

  • How do I get Price Alerts for flights from London Luton Airport to Region of Siem Reap?

    Price Alerts will notify you by email when the price for flights to Region of Siem Reap from London Luton Airport decreases. To activate this, select your desired travel dates and search for offers. While browsing through offers you’ll see the Price Alert widget toggle. Click it to turn on notifications.

  • How can I save money on flights from London Luton Airport to Region of Siem Reap with momondo?

    Plan your trips smart with the “Price Forecast” feature, which uses flight data to help you pick the best days to fly for the lowest fares. Our “Price Calendar” helps you get the most for your money by showing you when it’s most advantageous to fly. Curate your own travel experiences for less with “Explore”. Expert travel hacks to fuel your next adventure are a click away with “Discover” by momondo. Set up our “Price Alerts” to track fare changes and book when prices are at their lowest point.

  • How does momondo find its flight prices?

    momondo shows deals across 700+ competitors all at once. momondo is active in 30 international markets, so you can have access to a wide range of options from airlines and OTAs alike.

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?

All flight searches from London to Siem Reap on momondo can be filtered to show those which offer flexible booking policies.

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

Once all potential London to Siem Reap flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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 simply researching potential flights to Siem Reap, momondo offers a useful price alert feature which will track prices for flights to Siem Reap from London and alert you when they change.

An easier way to manage your Region of Siem Reap trip

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