Flights tailored to your budget
- Flights from London to Siem Reap
How much is a flight from London Heathrow to Siem Reap?
There’s no fixed price — fares between London and Siem Reap can vary a lot by day or time.
Pick a travel date to see today’s available fares.
Flying during the week can be more affordable, as weekend flights tend to be pricier. Also consider demand and availability: the last remaining seats often come at higher fares!
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 your journey from London Heathrow to Siem Reap with ease
Use Jetcost to tailor your search — direct or connecting flights, round-trip or one-way, filtered by airline, price, travel time, or agency.
Other popular destinations
Exploring options in Cambodia? These cities are trending: Phnom Penh, Siem Reap, Sihanoukville.
Flight availability can change quickly — refresh the results if you’ve been away from the page for a while.
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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