Journey information
Overview: London to Siem Reap flight
Flights from London to Siem Reap depart on average 71 times per day, taking around 19h 0m. Cheap flight tickets for this journey start at $955 (€766) if you book in advance.
The earliest flight runs at 05:30, the last at 21:35. The fastest flight covers the distance in 19h 0m. August is the cheapest month to fly.
Average flight duration 19h 0m |
Cheapest ticket price $955 (€766) |
Flights per day 71 |
Fastest flight 19h 0m |
Cheapest month to travel August |
First flight 05:30 |
Last flight 21:35 |
FAQs: London to Siem Reap Flight
Find answers to the most common questions about traveling from London to Siem Reap by flight. From journey times and ticket prices to direct connections, first and last departures, and even whether the route is scenic, our FAQs cover everything you need to plan your trip. Whether you’re looking for the fastest flight, the cheapest option, or tips for making the most of your visit at Siem Reap, this guide helps you travel smarter and with confidence.

- Angkor Wat International Half Marathon, a unique race that takes participants through the stunning temples of Angkor Wat
- Bon Om Touk (Water Festival), a vibrant celebration marking the end of the rainy season with boat races and cultural performances
- Khmer New Year, a festive three-day celebration filled with traditional games, dances, and family gatherings.
- Khmer New Year, vibrant cultural celebrations with traditional games and festivities
- Pchum Ben, a unique opportunity to experience local customs and pay respects to ancestors
- Water Festival, spectacular boat races and lively street celebrations.
Typically, passengers are allowed one carry-on bag and one personal item (for example a purse, laptop bag, or backpack). Personal items must fit under the seat in front of you.
Budget Airlines (like Ryanair or Wizz Air) have stricter size and weight limits, often requiring fees for larger carry-ons. Full-Service Airlines have more lenient policies, sometimes including more spacious dimensions or higher weight limits depending on your ticket class.
popular airports
Popular airports from London to Siem Reap
- Free Wi-Fi available throughout the airport for 90 minutes.
- Shops are located in both terminals, including Harrods and World Duty Free.
- Short stay parking available at both terminals, approximately 6€ (£5) for 30 minutes.
- Available outside the terminal.
- Assistance.
- Available throughout the airport, including accessible facilities.
- Yes
- Lounges available in both terminals, including No1 Lounge and Club Aspire.
- Located in the South Terminal, inquiries can be made online or in person.
- Train: Gatwick Express, Southern, Thameslink
- Bus: National Express, Metrobus
- Free Wi-Fi available throughout the airport for up to 4 hours.
- Shops are located throughout all terminals, including Harrods and World Duty Free.
- Short Stay parking available near each terminal, approximately 6.3€ (£5.30) for 30 minutes.
- Available outside the terminal.
- Assistance.
- Available throughout the airport, including accessible facilities.
- Yes
- Lounges available in all terminals, including British Airways and Plaza Premium lounges.
- Located at each terminal, contact Heathrow Airport Lost Property.
- Bus: 105, 111, 140, 285, 423
- Metro: Piccadilly Line
- Train: Heathrow Express, TfL Rail
More options for your journey from London to Siem Reap
Here are some other resources that might have the information you need
