Find flights
FAQs

Cheap flights from London Heathrow Airport to Siem Reap

LHR — SAI
2 Jun — 9 Jun1
1 adult
So 2/6
So 9/6

What is the cheapest day to fly round-trip from London Heathrow Airport to Siem Reap?

Leaving on a Sunday is a viable option for saving on travel. Heavily demanded days of the week can typically drive up the prices you see. Booking your travel for a less competitive day can save up to 22% on the overall cost on flights from London Heathrow Airport to Siem Reap.

What is the cheapest month to fly from London Heathrow Airport to Siem Reap?

Due to multiple factors, expect to potentially pay more when booking in December. For low rates, April can be a great choice for travel to Siem Reap. Flights to Siem Reap from London Heathrow Airport in April are about £842 on average during April, but can be found for as low as £442.

When is the cheapest time to fly from London Heathrow Airport to Siem Reap (LHR - SAI)?

Unlike in the morning, when flights are generally more expensive, you can save up to 14% on flights from London Heathrow Airport to Siem Reap by exploring options for tickets at midday.

When is the cheapest time to fly from London Heathrow Airport to Siem Reap?

Use this chart to determine the cheapest time to fly return from Heathrow to Siem Reap. Price data was last updated on 26 May 2024.
Morning
Midday
Afternoon
Evening
All times are departure.
Travellers seeking maximum savings on their London Heathrow Airport to Siem Reap flight should consider departing on Monday evenings when fares are most often at their lowest. Saturday mornings flights should be avoided if possible as fares are typically the most expensive at this time.
Search Deals

Best time to book a flight from Heathrow to Siem Reap

Have a flexible travel schedule? Discover the best time to fly to Siem Reap from Heathrow 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 Heathrow 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 Heathrow?

    For a flight from London Heathrow to Siem Reap, you will be flying into Siem Reap–Angkor Intl. Siem Reap–Angkor Intl (SAI) is just 24.7 mi from the center of the city. Siem Reap–Angkor Intl is the only Siem Reap airport and it handles 0 inbound flights from London Heathrow per day. 2 airlines have flights to Siem Reap–Angkor Intl from London Heathrow on a regular basis.

  • What does LHR to SAI mean?

    These are just IATA (International Air Transport Association) codes. They are used in aviation to identify and differentiate airports. That’s why a London Heathrow Airport to Siem Reap–Angkor Intl Airport flight would often be abbreviated as a LHR to SAI flight.

  • Can I find deals for flights from Heathrow to Siem Reap that include extra baggage allowance?

    The amount of baggage you can bring on your Heathrow to Siem Reap flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

  • Can I find deals on flights from Heathrow to Siem Reap with specific airlines?

    Yes, Cheapflights allows you to browse and filter Heathrow to Siem Reap flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

  • Can I find deals for flights from Heathrow to Siem Reap that include hotel bookings?

    Yes. In addition to deals on Heathrow to Siem Reap flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Heathrow to Siem Reap?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Heathrow to Siem Reap.

  • Can I find deals for business class flights from Heathrow to Siem Reap?

    Yes. Cheapflights offers flight deals from Heathrow 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.

  • Can I find deals for flights from Heathrow to Siem Reap that allow pets onboard?

    Many airlines flying from Heathrow to Siem Reap offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

  • Can I find deals on last-minute flights from Heathrow to Siem Reap?

    Yes, you can often find last-minute deals on Heathrow to Siem Reap flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top 2 airlines flying from Heathrow to Siem Reap

Discover the top 2 airlines that operate flights from Heathrow to Siem Reap. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 894,508 searches. Data last updated 28 Mai 2024.
AirlineCheapestAverageFlexibilityOn-time
Singapore AirlinesCheapest£666Average£782FlexibilityNo cancel feeOn-time81%
Search Singapore Airlines flights
Thai AirwaysCheapest£857Average£909FlexibilityNo cancel feeOn-time77%
Search Thai Airways flights

Search flights from Heathrow to Siem Reap by cabin class

Find flights from Heathrow to Siem Reap, based on your preferred cabin class, be it economy, premium economy, business, or first class.

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 Heathrow to Siem Reap?

When you search for this flight from Heathrow to Siem Reap, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Why should you use Cheapflights to find cheap flight tickets from Heathrow 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 Heathrow to Siem Reap.

Can Cheapflights find flights from Heathrow to Siem Reap with no change fees?

Need flexible booking options for your flight to Siem Reap from Heathrow? 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 Heathrow to Siem Reap become cheaper?

Not ready to book yet? You can track prices for flights from Heathrow to Siem Reap on Cheapflights with our Price Alert feature and get notified when better prices are available.

100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.