Cheap Flights Koh Samui to London from £437

Flight FAQs

• Which airlines offer the cheapest flights from Koh Samui (USM) to London (LON)?

  Based on Trip.com data, Scoot offers one-way fares as low as £437 on Cheapest nonstop routes (e.g. USM to LGW on Thu, Oct 8), while EVA Air offers Cheapest nonstop round-trips from £963 departing on Sun, Sep 27 and returning on Sun, Oct 4.

• Which airlines offer direct flights from Koh Samui to London?

  At the moment, you can catch a direct flight from Koh Samui to London with the following airlines, including: Bangkok Airways Thai Airways Scoot Gulf Air Selected airlines are based on historical data collected from flight bookings users made on Trip.com within the last 90 days.

• When is the best time to book flights from Koh Samui to London?

  By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from Koh Samui to London is around 40 days (6 weeks) in advance, and the best time to fly is usually on Tuesday, Wednesday, and Saturday. Tuesday typically offers the cheapest flights for departure, while Saturday offers the best return deals.

• How can I find the best deals on flights from Koh Samui to London?

  To find best deals on flights from Koh Samui to London, you can use various tools on Trip.com:
  · Be flexible with your travel dates to get the cheapest flight deal. Now the cheapest flight deal is on Thu, Oct 8, with one-way flights priced at just £437.
  · Compare airlines strategically. Budget carriers often provide the lowest base fares, while we found the most affordable airline currently operating on this route is Scoot.
  · Set up price alerts to easily monitor ticket prices without having to check every day.
  · Check Trip.com flight deals and promo codes frequently.
  · Avoid peak season unless you book very early. It seems the peak season for London travel is around January.
  · Get exclusive promo codes for Trip.com app users.

• When is the best time to book a flight from Koh Samui to London to get the best price?

  The cheapest months to fly from Koh Samui to London is November, when demand for travel is lower.

• Which upcoming date is the cheapest for flights from Koh Samui to London?

  After crunching the numbers on our August flight calendar, it's currently cheapest to fly from Koh Samui to London on August 26, 2026 with Bangkok Airways, with prices starting at £508.

• Which airports can I fly through when travelling to London from Koh Samui?

  You can land at any one of the following hubs in London, with Samui Airport to Heathrow Airport (USM-LHR) is by far the most common option on this route: London City Airport (LCY) London Gatwick Airport (LGW) Heathrow Airport (LHR) London Luton Airport (LTN) London Southend Airport (SEN) London Stansted Airport (STN).

• What is the time difference between Koh Samui and London?

  The time difference between London and Koh Samui is 7h.

• How can I change or cancel my flight ticket from Koh Samui to London?

  Tickets can only be changed or cancelled if permitted by airline policy. To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy. However, if the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.

• What is the average cost of a one-way flight from Koh Samui to London?

  Based on Trip.com data for flights departing in the next 30 days, the average one-way fare from Koh Samui to London is £918. Fares vary by travel date, airline and availability.

• How do I book flights from Koh Samui to London on Trip.com?

  Enter Koh Samui and London, choose your travel dates and passengers, then compare flights by price, duration and baggage. Select a fare, review the change and cancellation rules, enter traveller details and complete payment to receive your confirmation.

• Are there budget airlines on the Koh Samui to London route?

  Scootare the most popular budget airlines flying from Koh Samui to London. Check baggage, seat and payment fees before comparing the final price.