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Cheap flights from London City Airport to Siem Reap, Cambodia from £540

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 17/5. Fares are subject to change and may not be available on all flights or dates of travel.
LCY — SAI
2 Jun — 9 Jun1
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 3 May 2026.

Tue 25/809:15
LCY
-
SAI
2 stops27h 40m
SWISS
Tue 22/909:40
SAI
-
LCY
2 stops29h 00m
SWISS
Deal found 3/5£690
Mon 1/609:15
LCY
-
SAI
2 stops27h 50m
SWISS
Mon 8/609:45
SAI
-
LCY
2 stops28h 55m
SWISS
Deal found 1/5£826
Tue 15/909:15
LCY
-
SAI
2 stops27h 40m
SWISS
Tue 29/909:40
SAI
-
LCY
2 stops29h 00m
SWISS
Deal found 28/4£827
Fri 12/613:10
LCY
-
SAI
2 stops23h 45m
SWISS
Tue 23/609:40
SAI
-
LCY
2 stops29h 00m
SWISS
Deal found 29/4£883
Fri 21/813:10
LCY
-
SAI
2 stops23h 45m
SWISS
Sun 6/909:40
SAI
-
LCY
2 stops27h 45m
SWISS
Deal found 2/5£908
Tue 1/913:10
LCY
-
SAI
2 stops23h 45m
SWISS
Tue 15/909:40
SAI
-
LCY
2 stops29h 00m
SWISS
Deal found 30/4£958
Tue 10/1113:30
LCY
-
SAI
2 stops22h 15m
SWISS
Mon 30/1109:55
SAI
-
LCY
2 stops29h 45m
SWISS
Deal found 1/5£965
Tue 10/1118:15
LCY
-
SAI
3 stops43h 55m
Multiple Airlines
Mon 30/1116:45
SAI
-
LCY
2 stops23h 30m
Multiple Airlines
Deal found 1/5£993
Fri 12/609:15
LCY
-
SAI
2 stops27h 40m
SWISS
Thu 25/609:40
SAI
-
LCY
2 stops29h 00m
SWISS
Deal found 1/5£1,001
Wed 12/809:15
LCY
-
SAI
2 stops27h 40m
SWISS
Wed 26/809:40
SAI
-
LCY
2 stops29h 00m
SWISS
Deal found 1/5£1,135
Thu 14/509:20
LCY
-
SAI
2 stops21h 00m
KLM
Thu 4/609:45
SAI
-
LCY
2 stops38h 45m
KLM
Deal found 1/5£1,162
Mon 11/509:15
LCY
-
SAI
2 stops27h 50m
SWISS
Sun 17/509:45
SAI
-
LCY
2 stops27h 40m
SWISS
Deal found 30/4£1,175

Find flight deals from London City to Siem Reap

Discover tips and strategies to find the most affordable flight options for your journey from London City (LCY) to Siem Reap (SAI). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 3 May 2026.

Round-trip from

£690

One-way from

£540

Popular in

December

Cheapest in

September

Average price

£739
SWISS
  • SWISS
  • 25/8-22/9
  • 4 total stops
  • 56h 40m total
  • London to Siem Reap
Search Deals
17/5
  • 17/5
  • 2 total stops
  • 20h 25m total
  • London to Siem Reap
Search Deals
Highest demand for flights based on searches. 7% potential increase in price (£47 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£23 potential savings vs. average return price).
Search Deals
Average for round-trip flights in May 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 3 May 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

Tue 15/9

09:15-18:55

2 stops27h 40m

Siem Reap–Angkor Intl

Tue 29/9

09:40-08:40

2 stops29h 00m

£827
Fastest return journey

LondonSiem Reap

LCY - SAI

LCYSAI

London City

Fri 21/8

13:10-18:55

2 stops23h 45m

Siem Reap–Angkor Intl

Sun 6/9

09:40-07:25

2 stops27h 45m

£908

LondonSiem Reap

LCY - SAI

LCYSAI

London City

Tue 1/9

13:10-18:55

2 stops23h 45m

Siem Reap–Angkor Intl

Tue 15/9

09:40-08:40

2 stops29h 00m

£958

LondonSiem Reap

LCY - SAI

LCYSAI

London City

Fri 12/6

09:15-18:55

2 stops27h 40m

Siem Reap–Angkor Intl

Thu 25/6

09:40-08:40

2 stops29h 00m

£1,001

LondonSiem Reap

LCY - SAI

LCYSAI

London City

Thu 14/5

09:20-12:20

2 stops21h 00m

Siem Reap–Angkor Intl

Thu 4/6

09:45-18:30

2 stops38h 45m

£1,162

LondonSiem Reap

LCY - SAI

LCYSAI

London City

Fri 23/10

13:10-18:55

2 stops23h 45m

Siem Reap–Angkor Intl

Sat 31/10

09:55-12:40

2 stops33h 45m

£1,357

LondonSiem Reap

LCY - SAI

LCYSAI

London City

Sun 26/7

14:20-18:55

2 stops22h 35m

Siem Reap–Angkor Intl

Tue 18/8

09:40-08:40

2 stops29h 00m

£1,359

LondonSiem Reap

LCY - SAI

LCYSAI

London City

Sat 25/7

09:00-18:55

2 stops27h 55m

Siem Reap–Angkor Intl

Mon 17/8

09:40-08:40

2 stops29h 00m

£1,359

LondonSiem Reap

LCY - SAI

LCYSAI

London City

Sun 26/7

14:20-18:55

2 stops22h 35m

Siem Reap–Angkor Intl

Wed 19/8

09:40-08:40

2 stops29h 00m

£1,359

LondonSiem Reap

LCY - SAI

LCYSAI

London City

Sun 26/7

14:20-18:55

2 stops22h 35m

Siem Reap–Angkor Intl

Mon 17/8

09:40-08:40

2 stops29h 00m

£1,359

Flights are sorted by cheapest return flights first.

Deals found on 2/5

Showing 1-10 of 21 resultsSorted by cheapest first
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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.

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.

  • What airport do you fly into for flights to Siem Reap from London City?

    Most people fly into Siem Reap–Angkor Intl (SAI) if they book a flight to Siem Reap from London City. On average, Siem Reap–Angkor Intl has 0 inbound flights from London City per day from 0 airlines. Siem Reap–Angkor Intl is conveniently located just 24.7 mi from Siem Reap’s city center.

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

    Airlines like SWISS and KLM fly from London City Airport to Siem Reap in about 21h. The time it takes to get you to your destination can typically vary by up to 6h 40m. The distance from London City Airport to Siem Reap is about 6084 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

  • 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

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for London City to Siem Reap

See prices for flight routes from nearby airports that may be better suited for you.
Heathrow to Siem Reap flights
Stansted to Siem Reap flights
Gatwick to Siem Reap flights
Luton to Siem Reap flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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

Cheapflights makes it easy to find London City to Siem Reap flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

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

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from London City to Siem Reap.

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?

Yes, Cheapflights offers price alerts on London City to Siem Reap flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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