Cheap flights London — Siem Reap from $551

Q: How long is the flight from London to Siem Reap?

Approximate flight time — 12h 1m.

Q: How much do flights from London to Siem Reap cost?

The minimum price over 3 months — from $551 on 15.11.2026.

Q: Which airlines fly from London to Siem Reap?

This route is served by 2 airlines: Shenzhen Airlines, Wizz Air UK.

Q: From which airports does London operate flights?

From London: LHR (London Heathrow Airport), LTN (London Luton Airport).

Q: To which airports in Siem Reap do flights arrive?

To Siem Reap: SAI (Siem Reap International Airport).

Q: Which day of the week is cheapest?

The cheapest day of the week — Monday.

Q: When is the best time to buy tickets London — Siem Reap?

Optimal — 1–3 months before departure. Check the calendar above — it shows the best dates.

How many travellers?

Adults

12+ years

Children

2–11 years

Infants

under 2

Choose your departure date

Cheapest: $551 on 15.11.2026

Prices shown are from searches by other travellers over the last 24 hours. Missing a date? Click any day — we'll find tickets anyway.

November 2026

December 2026

January 2027

Prices found for 3 of 90 days. Prices update as more travellers search. Click any date to search live.

Depart

—

Return

—

Cheapest flights found

16 Nov 2026, Mon

Shenzhen Airlines ZH 888

00:10

LHR London Heathrow Airport

16:05

SAI Siem Reap International Airport

15h 55m 2 stops

View this ticket

04 Jan 2027, Mon

Wizz Air UK W9 2604

22:05

LTN London Luton Airport

13:55

SAI Siem Reap International Airport

15h 50m 3 stops

View this ticket

Route characteristics

Distance

9 787 km

Flight time

12h 1m

Time difference

+7h

Minimum price

from $551 (15.11.2026)

Average price

$561

Maximum price

$582

Cheapest day

Monday

Departure airports (2)

LHR London Heathrow Airport LTN London Luton Airport

Arrival airports (1)

SAI Siem Reap International Airport

Airlines (2)

ZH Shenzhen Airlines W9 Wizz Air UK

Agencies (2)

Tickets Kupi.com

Price trend by month

Airlines — cheapest prices 2

Shenzhen Airlines

1 flights · 1 days

$551

Wizz Air UK

1 flights · 1 days

$582

Where to buy tickets 2

Tickets

1 tickets · 1 days

from $551

Kupi.com

1 tickets · 1 days

from $582

Airports

From — London (2)

LHR London Heathrow Airport
LTN London Luton Airport

To — Siem Reap (1)

SAI Siem Reap International Airport

Other destinations from London

Frequently asked questions about the route London — Siem Reap

How long is the flight from London to Siem Reap?

Approximate flight time — 12h 1m. This is an average for a direct flight. With connections, the time may be longer.

What is the distance from London to Siem Reap?

The straight-line distance — 9 787 km.

How much do flights from London to Siem Reap cost?

The minimum price over 3 months — from $551 on 15.11.2026.

What is the average ticket price?

The average price — $561. Range: $551 — $582.

What is the time difference between London and Siem Reap?

The difference — +7h.

From which airports does London operate flights?

From London: LHR (London Heathrow Airport), LTN (London Luton Airport).

To which airports in Siem Reap do flights arrive?

To Siem Reap: SAI (Siem Reap International Airport).

Which airlines fly this route?

This route is served by 2 airlines: Shenzhen Airlines, Wizz Air UK.

Which day of the week is cheapest?

The cheapest day of the week — Monday.

When is the best time to buy tickets?

Optimal — 1–3 months before departure. Check the calendar above — it shows the best dates.

How do I book flights?

Click "View this ticket" on any flight card — you'll be redirected to the booking page with this specific ticket pre-selected.

About the route London — Siem Reap

Flights London — Siem Reap is a popular route. The straight-line distance is 9 787 km. Flight time 12h 1m. Time difference +7h.

From London (LON) flights depart from 2 airports: LHR, LTN. To Siem Reap (SAI) — 1 arrival airport: SAI.

2 airlines operate on this route: Shenzhen Airlines, Wizz Air UK.

The minimum price for the next 3 months — from $551 (15.11.2026). The cheapest dates are highlighted in the calendar above.

The average ticket price — $561, ranging from $551 to $582. Book 1–3 months in advance to get the best deals.

Cheapest day to fly — Monday.

Other destinations in Cambodia from London

Phnom Penh

Cheap flights London — Siem Reap

From — London (2)

To — Siem Reap (1)

Flights

Data

Documents

Contacts