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- Flights from London to Siem Reap
What’s the cost of a flight from London Heathrow to Siem Reap?
Prices vary based on date, airline, and availability. Compare several options if you're flying between London and Siem Reap.
Choose a date to explore the best fares now.
If possible, avoid holiday periods: ticket prices tend to rise quickly and availability drops, especially on busy routes. Morning and evening flights are often in high demand too — book early to get a good fare.
Are there multiple airports in London and Siem Reap?
If your departure or arrival city has more than one airport, it's worth comparing all of them for timing and pricing.
- Airports in London: 6 airports are active in London - City Airport, Gatwick, Heathrow, Luton, Southend, Stansted.
- Airports in Siem Reap: Siem Reap is the only airport currently running.
If you're traveling with a group or bulky luggage, look into parking or transport options. Alternative airports may offer faster transfers or better rates.
Plan smarter: flights from London Heathrow to Siem Reap
Find the flight that fits your plans with Jetcost. You can filter results by stops, agencies, budget, time of day, and airline — all in one search.
Other popular destinations
Travelers flying to Cambodia also checked out: Phnom Penh, Siem Reap, Sihanoukville.
Comparing offers from multiple agencies helps you find the best price for the same route. You can also spot exclusive deals from individual airlines right in the results list.
Frequently asked questions about flights from London Heathrow to Siem Reap.
How much does an airline ticket from London Heathrow to Siem Reap cost?
How far is London from Siem Reap?
What are the airports in Siem Reap?
What are the airports in London?
What are the most popular cities in Cambodia?
When should I book a flight from London to Siem Reap?
What is the cheapest month to fly from London to Siem Reap?
What is the most expensive month to fly from London to Siem Reap?
What is the best day of the week to fly from London to Siem Reap?
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