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Cheap flights from London City Airport to Siem Reap from £427

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 26/8. Fares are subject to change and may not be available on all flights or dates of travel.
LCY — SAI
11 Aug — 18 Aug1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from London City to Siem Reap

Enter your travel dates to find the best prices.

Cheapest flights from London City to Siem Reap
Explore the most affordable flight options available from London City to Siem Reap. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 12 July 2026.

Sat 19/912:15
LCY
-
SAI
2 stops24h 40m
SWISS
Mon 28/909:40
SAI
-
LCY
2 stops29h 00m
SWISS
Deal found 11/7£610
Mon 31/813:10
LCY
-
SAI
2 stops23h 45m
SWISS
Tue 8/909:40
SAI
-
LCY
2 stops29h 00m
SWISS
Deal found 9/7£648
Sun 30/814:20
LCY
-
SAI
2 stops22h 35m
SWISS
Tue 8/909:40
SAI
-
LCY
2 stops29h 00m
SWISS
Deal found 7/7£649
Tue 1/909:15
LCY
-
SAI
2 stops27h 40m
SWISS
Tue 8/909:40
SAI
-
LCY
2 stops29h 00m
SWISS
Deal found 7/7£664
Wed 18/1113:30
LCY
-
SAI
2 stops22h 15m
SWISS
Wed 2/1209:55
SAI
-
LCY
2 stops29h 45m
SWISS
Deal found 7/7£688
Tue 17/1109:15
LCY
-
SAI
2 stops26h 30m
SWISS
Thu 3/1209:55
SAI
-
LCY
2 stops29h 45m
SWISS
Deal found 8/7£688
Tue 24/1113:30
LCY
-
SAI
2 stops22h 15m
SWISS
Thu 3/1209:55
SAI
-
LCY
2 stops29h 45m
SWISS
Deal found 11/7£691
Tue 24/1113:30
LCY
-
SAI
2 stops22h 15m
SWISS
Wed 9/1209:55
SAI
-
LCY
2 stops29h 45m
SWISS
Deal found 7/7£728

Find flight deals from London City to Siem Reap

Keep the following information in mind while searching for London City to Siem Reap flight deals. Data was last updated 12 July 2026.

Round-trip from

£610

One-way from

£427

Popular in

December

Cheapest in

July

Average price

£624
SWISS
  • SWISS
  • 19/9-28/9
  • 4 total stops
  • 53h 40m total
  • London to Siem Reap
Search Deals
SWISS
  • SWISS
  • 26/8
  • 2 total stops
  • 23h 45m total
  • London to Siem Reap
Search Deals
Highest demand for flights based on searches. 13% potential increase in price (£91 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£28 potential savings vs. average return price).
Search Deals
Average for round-trip flights in July 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from London City 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 12 July 2026.
Use the filters below to find and compare flights from London City Airport to Siem Reap that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonSiem Reap

LCY - SAI

LCYSAI

London City

Sat 19/9

12:15-18:55

2 stops24h 40m

Siem Reap–Angkor Intl

Mon 28/9

09:40-08:40

2 stops29h 00m

£610

LondonSiem Reap

LCY - SAI

LCYSAI

London City

Mon 31/8

13:10-18:55

2 stops23h 45m

Siem Reap–Angkor Intl

Tue 8/9

09:40-08:40

2 stops29h 00m

£648

LondonSiem Reap

LCY - SAI

LCYSAI

London City

Tue 1/9

09:15-18:55

2 stops27h 40m

Siem Reap–Angkor Intl

Tue 8/9

09:40-08:40

2 stops29h 00m

£648

LondonSiem Reap

LCY - SAI

LCYSAI

London City

Wed 25/11

13:30-18:45

2 stops22h 15m

Siem Reap–Angkor Intl

Mon 7/12

09:55-08:40

2 stops29h 45m

£688

LondonSiem Reap

LCY - SAI

LCYSAI

London City

Wed 18/11

13:30-18:45

2 stops22h 15m

Siem Reap–Angkor Intl

Wed 2/12

09:55-08:40

2 stops29h 45m

£688

LondonSiem Reap

LCY - SAI

LCYSAI

London City

Wed 18/11

13:30-18:45

2 stops22h 15m

Siem Reap–Angkor Intl

Thu 3/12

09:55-08:40

2 stops29h 45m

£688

LondonSiem Reap

LCY - SAI

LCYSAI

London City

Tue 24/11

13:30-18:45

2 stops22h 15m

Siem Reap–Angkor Intl

Wed 9/12

09:55-08:40

2 stops29h 45m

£728
Fastest return journey

LondonSiem Reap

LCY - SAI

LCYSAI

London City

Mon 31/8

13:10-18:55

2 stops23h 45m

Siem Reap–Angkor Intl

Sun 6/9

09:40-07:25

2 stops27h 45m

£747

LondonSiem Reap

LCY - SAI

LCYSAI

London City

Tue 1/9

09:15-18:55

2 stops27h 40m

Siem Reap–Angkor Intl

Sun 6/9

09:40-07:25

2 stops27h 45m

£764

LondonSiem Reap

LCY - SAI

LCYSAI

London City

Mon 23/11

09:15-18:45

2 stops26h 30m

Siem Reap–Angkor Intl

Mon 7/12

09:55-08:40

2 stops29h 45m

£822

Flights are sorted by cheapest return flights first.

Deals found on 8/7

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

Best time to book a flight from London City to Siem Reap

Have a flexible travel schedule? Discover the best time to fly to Siem Reap from London City 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 City 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 London City to Siem Reap. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from London City Airport to Region of Siem Reap?

    SWISS can get you from London City Airport to Region of Siem Reap in just under 24h 40m. Your travel time can differ by up to . London City Airport and Region of Siem Reap are separated by a distance of 6084 mi.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from London City 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.

See more FAQs

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How does Cheapflights help users find flights from London City to Siem Reap?

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Why should you use Cheapflights to find cheap flight tickets from London City to Siem Reap?

Cheapflights helps you find that perfect flight to Siem Reap from London City by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

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

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

Can Cheapflights notify me if prices for flights from London City to Siem Reap become cheaper?

Of course! You can now track prices for flights from London City to Siem Reap and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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