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Cheap flights from London Luton Airport to Siem Reap from £289

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 5/9. Fares are subject to change and may not be available on all flights or dates of travel.
LTN — SAI
4 Sep — 11 Sep1
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 5 August 2026.

Mon 31/805:40 -
3 stops30h 25m
Thu 10/917:55 -
3 stops36h 55m
Deal found 1/8£671
Thu 8/1021:40 -
3 stops31h 35m
Fri 23/1019:20 -
3 stops34h 30m
Deal found 4/8£692
Mon 31/805:40 -
3 stops30h 25m
Fri 11/915:35 -
3 stops28h 20m
Deal found 4/8£802
Tue 6/1007:05 -
2 stops19h 40m
Thu 17/1220:30 -
2 stops20h 55m
Deal found 5/8£995
Sun 20/906:05 -
2 stops20h 40m
Sat 3/1018:30 -
2 stops33h 45m
Deal found 3/8£1,007
Mon 14/1206:00 -
3 stops32h 00m
Sun 3/119:05 -
3 stops33h 50m
Deal found 31/7£1,145
Thu 10/906:05 -
2 stops25h 10m
Wed 23/918:05 -
2 stops21h 20m
Deal found 2/8£1,236
Thu 17/1214:05 -
3 stops21h 40m
Wed 6/110:10 -
3 stops39h 00m
Deal found 3/8£1,385

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 5 August 2026.

Round-trip from

£671

One-way from

£289

Popular in

December

Cheapest in

July

Average price

£928
31/8-10/9
  • 31/8-10/9
  • 6 total stops
  • 67h 20m total
  • London to Siem Reap
Search Deals
5/9
  • 5/9
  • 3 total stops
  • 39h 30m total
  • London to Siem Reap
Search Deals
Highest demand for flights based on searches. 11% potential increase in price (£74 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£27 potential savings vs. average return price).
Search Deals
Average for round-trip flights in August 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 5 August 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 London Luton - SAI Siem Reap–Angkor Intl

LTNSAI

London Luton

Mon 31/8

05:40-18:05

3 stops30h 25m

Siem Reap–Angkor Intl

Thu 10/9

17:55-00:50

3 stops36h 55m

£671

LondonSiem Reap

LTN London Luton - SAI Siem Reap–Angkor Intl

LTNSAI

London Luton

Thu 8/10

21:40-11:15

3 stops31h 35m

Siem Reap–Angkor Intl

Fri 23/10

19:20-23:50

3 stops34h 30m

£692

LondonSiem Reap

LTN London Luton - SAI Siem Reap–Angkor Intl

LTNSAI

London Luton

Mon 31/8

05:40-18:05

3 stops30h 25m

Siem Reap–Angkor Intl

Fri 11/9

15:35-13:55

3 stops28h 20m

£802
Fastest return journey

LondonSiem Reap

LTN London Luton - SAI Siem Reap–Angkor Intl

LTNSAI

London Luton

Tue 6/10

07:05-08:45

2 stops19h 40m

Siem Reap–Angkor Intl

Thu 17/12

20:30-10:25

2 stops20h 55m

£995

LondonSiem Reap

LTN London Luton - SAI Siem Reap–Angkor Intl

LTNSAI

London Luton

Sun 20/9

06:05-08:45

2 stops20h 40m

Siem Reap–Angkor Intl

Sat 3/10

18:30-22:15

2 stops33h 45m

£1,007

LondonSiem Reap

LTN London Luton - SAI Siem Reap–Angkor Intl

LTNSAI

London Luton

Mon 14/12

06:00-21:00

3 stops32h 00m

Siem Reap–Angkor Intl

Sun 3/1

19:05-21:55

3 stops33h 50m

£1,145

LondonSiem Reap

LTN London Luton - SAI Siem Reap–Angkor Intl

LTNSAI

London Luton

Thu 10/9

06:05-13:15

2 stops25h 10m

Siem Reap–Angkor Intl

Wed 23/9

18:05-09:25

2 stops21h 20m

£1,236

LondonSiem Reap

LTN London Luton - SAI Siem Reap–Angkor Intl

LTNSAI

London Luton

Thu 17/12

14:05-18:45

3 stops21h 40m

Siem Reap–Angkor Intl

Wed 6/1

10:10-18:10

3 stops39h 00m

£1,385
Cheapest one-way

LondonSiem Reap

LTN London Luton - SAI Siem Reap–Angkor Intl

LTNSAI

London Luton

Thu 3/9

05:40-17:10

3 stops29h 30m

£326

LondonSiem Reap

LTN London Luton - SAI Siem Reap–Angkor Intl

LTNSAI

London Luton

Fri 4/9

20:35-17:10

3 stops38h 35m

£330

Flights are sorted by cheapest return flights first.

Deals found on 1/8

Showing 1-10 of 17 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?

Need flexible booking options for your flight to Siem Reap from Luton? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

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Not ready to book yet? You can track prices for flights from Luton to Siem Reap on Cheapflights with our Price Alert feature and get notified when better prices are available.

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