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Cheap flights from London Luton Airport to Siem Reap from £373

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 16/5. Fares are subject to change and may not be available on all flights or dates of travel.
LTN — SAI
3 May — 10 May1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Luton to Siem Reap

Enter your travel dates to find the best prices.

Cheapest flights from Luton to Siem Reap
Explore the most affordable flight options available from Luton to Siem Reap. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 3 April 2026.

Tue 5/505:40
LTN
-
SAI
3 stops27h 10m
Multiple Airlines
Sat 9/513:05
SAI
-
LTN
3 stops34h 50m
Multiple Airlines
Deal found 1/4£731
Sun 17/505:40
LTN
-
SAI
3 stops30h 25m
Multiple Airlines
Sun 24/513:05
SAI
-
LTN
3 stops28h 20m
Multiple Airlines
Deal found 2/4£754
Sun 10/505:40
LTN
-
SAI
3 stops27h 10m
Multiple Airlines
Mon 18/515:35
SAI
-
LTN
3 stops28h 45m
Multiple Airlines
Deal found 31/3£763
Fri 4/906:20
LTN
-
SAI
3 stops23h 55m
Multiple Airlines
Sat 3/1012:55
SAI
-
LTN
3 stops37h 05m
Multiple Airlines
Deal found 31/3£819
Wed 4/1106:50
LTN
-
SAI
3 stops26h 15m
Multiple Airlines
Wed 30/1210:10
SAI
-
LTN
3 stops42h 40m
Multiple Airlines
Deal found 30/3£875
Wed 29/405:40
LTN
-
SAI
3 stops30h 25m
Multiple Airlines
Wed 20/510:00
SAI
-
LTN
3 stops34h 25m
Multiple Airlines
Deal found 31/3£1,044
Wed 12/806:15
LTN
-
SAI
3 stops33h 15m
Multiple Airlines
Sun 30/819:30
SAI
-
LTN
2 stops25h 05m
Multiple Airlines
Deal found 30/3£1,063
Sat 2/506:00
LTN
-
SAI
3 stops31h 05m
Multiple Airlines
Sat 9/513:05
SAI
-
LTN
3 stops31h 40m
Multiple Airlines
Deal found 3/4£1,121
Tue 7/409:45
LTN
-
SAI
3 stops27h 00m
Multiple Airlines
Thu 16/419:30
SAI
-
LTN
3 stops35h 20m
Multiple Airlines
Deal found 29/3£1,709
Mon 13/406:05
LTN
-
SAI
3 stops30h 40m
Multiple Airlines
Mon 27/410:30
SAI
-
LTN
2 stops32h 35m
Multiple Airlines
Deal found 2/4£1,973

Find flight deals from Luton to Siem Reap

Keep the following information in mind while searching for Luton to Siem Reap flight deals. Data was last updated 3 April 2026.

Round-trip from

£731

One-way from

£373

Popular in

December

Cheapest in

September

Average price

£813
5/5-9/5
  • 5/5-9/5
  • 6 total stops
  • 62h 00m total
  • London to Siem Reap
Search Deals
16/5
  • 16/5
  • 3 total stops
  • 46h 05m total
  • London to Siem Reap
Search Deals
Highest demand for flights based on searches. 7% potential increase in price (£50 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£24 potential savings vs. average return price).
Search Deals
Average for round-trip flights in April 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Luton to 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, Cheapflights users made 858,174 searches. Data last updated 3 April 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 5/5

05:40-14:50

3 stops27h 10m

Siem Reap–Angkor Intl

Sat 9/5

13:05-17:55

3 stops34h 50m

£731

LondonSiem Reap

LTN - SAI

LTNSAI

London Luton

Sun 17/5

05:40-18:05

3 stops30h 25m

Siem Reap–Angkor Intl

Sun 24/5

13:05-11:25

3 stops28h 20m

£754

LondonSiem Reap

LTN - SAI

LTNSAI

London Luton

Fri 4/9

06:20-12:15

3 stops23h 55m

Siem Reap–Angkor Intl

Sat 3/10

12:55-20:00

3 stops37h 05m

£819

LondonSiem Reap

LTN - SAI

LTNSAI

London Luton

Wed 29/4

05:40-18:05

3 stops30h 25m

Siem Reap–Angkor Intl

Wed 20/5

10:00-14:25

3 stops34h 25m

£1,044
Fastest return journey

LondonSiem Reap

LTN - SAI

LTNSAI

London Luton

Wed 12/8

06:15-21:30

3 stops33h 15m

Siem Reap–Angkor Intl

Sun 30/8

19:30-14:35

2 stops25h 05m

£1,063

LondonSiem Reap

LTN - SAI

LTNSAI

London Luton

Sat 2/5

06:00-19:05

3 stops31h 05m

Siem Reap–Angkor Intl

Sat 9/5

13:05-14:45

3 stops31h 40m

£1,121

LondonSiem Reap

LTN - SAI

LTNSAI

London Luton

Mon 13/4

06:05-18:45

3 stops30h 40m

Siem Reap–Angkor Intl

Mon 27/4

10:30-13:05

2 stops32h 35m

£1,973
Cheapest one-way

LondonSiem Reap

LTN - SAI

LTNSAI

London Luton

Sun 14/6

05:40-14:50

3 stops27h 10m

£379

LondonSiem Reap

LTN - SAI

LTNSAI

London Luton

Thu 9/4

07:05-06:20

3 stops41h 15m

£386

LondonSiem Reap

LTN - SAI

LTNSAI

London Luton

Wed 1/7

07:00-11:10

3 stops46h 10m

£540

Flights are sorted by cheapest return flights first.

Deals found on 1/4

Showing 1-10 of 14 resultsSorted by cheapest first
1
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Best time to book a flight from Luton to Siem Reap

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

Cheapflights Insights

Everything you need to know about your flight from London Luton Airport to Siem Reap
No data available for this route at this time. Please check back soon.

Related info for your journey

Find useful and relevant information for your journey from Luton to Siem Reap. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

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

  • How can I find direct flights from Luton to Siem Reap?

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

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

    Yes. Cheapflights offers flight deals from Luton 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.

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

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