$72 Cheap Flights to Koh Samui

Book in advance or search for cheap flights to Koh Samui during off-peak months like May and September. Flying off on a Thursday can also save you 16% on average compared to a Sunday flight.* The Expedia app makes it even easier to know the right time to book. Just activate the toggle for "Watch prices" and get notified when there's a better deal.*Best day of the week to book, depart and ideal booking window recommendations based on average round-trip ticket prices for January through August 2023, sourced from Airline Reporting Corporation's (ARC) global airline sales database. Percentages noted are averages.

Find the departure dates you want and a fare that fits your budget by booking your domestic flight to Koh Samui up to 28 days in advance. Lock in tickets two to four months ahead if you're traveling to Koh Samui from an international destination.**Best day of the week to book, depart and ideal booking window recommendations based on average round-trip ticket prices for January through August 2023, sourced from Airline Reporting Corporation's (ARC) global airline sales database. Percentages noted are averages.

Sundays are typically the best day to book a cheap flight to Koh Samui, with savings of about 8% on average compared to a Friday. If you choose to purchase on a Friday, expect to pay more as this is typically the most expensive day.**Best day of the week to book, depart and ideal booking window recommendations based on average round-trip ticket prices for January through August 2023, sourced from Airline Reporting Corporation's (ARC) global airline sales database. Percentages noted are averages.