To save up to 14% on this flight, we recommend booking at least 18 days prior to travel. The price may fluctuate and will likely increase closer to your departure date. Users on Cheapflights have found tickets from Koh Samui to Narita from ฿10,632 1-2 weeks out and tickets from ฿12,690 for flights departing within the next 72 hours.
Due to multiple factors, expect to potentially pay more when booking in April. For low rates, June can be a great choice for travel to Narita. Flights to Narita from Koh Samui in June are about ฿10,203 on average during June, but can be found for as low as ฿5,955.
When travelling, it's generally smart to pack in preparation for rain or any other conditions that may arise. The rainfall in Koh Samui is roughly less than Narita. You can assume this to be the case over the next 8 days.
You can imagine temperatures to be in the 33 °C range in May. The weather in Narita is generally colder than Koh Samui's. As flight availability is subject to become more limited as peak season approaches it is ideal to book in a timely manner.