June is by far the best month, wherein you can get cheapest flights for Bangkok to Ko Samui. Meanwhile, November is perceived as the expensive month due to the varying factors. That’s why it’s highly advised to make advanced online flight booking to save huge amounts of money.
June- During this month the footfall is less so, the flight is gradually inexpensive.
June - is the cheapest month to book round trip flights.
Cheapest Fare- Currently, this is the fare price based on the current demand.
Disclaimer - All the mentioned fares were found within last 48 hrs. The displayed fares are based on historical data and are subject to change. The fares cannot be guaranteed at the time of booking.

Bangkok
07:30
Suvarnabhumi Airport [BKK]
Sun , 14 Jun 2026

Ko Samui
08:35
Samui Airport [USM]
Sun, 14 Jun 2026

Bangkok
07:10
Suvarnabhumi Airport [BKK]
Sun , 14 Jun 2026

Ko Samui
08:15
Samui Airport [USM]
Sun, 14 Jun 2026

Bangkok
06:50
Suvarnabhumi Airport [BKK]
Sun , 14 Jun 2026

Ko Samui
11:55
Samui Airport [USM]
Sun, 14 Jun 2026

Bangkok
10:20
Suvarnabhumi Airport [BKK]
Sun , 14 Jun 2026

Ko Samui
16:55
Samui Airport [USM]
Sun, 14 Jun 2026

Bangkok
13:25
Suvarnabhumi Airport [BKK]
Sun , 14 Jun 2026

Ko Samui
18:00
Samui Airport [USM]
Sun, 14 Jun 2026

Bangkok
06:05
Suvarnabhumi Airport [BKK]
Sun , 14 Jun 2026

Ko Samui
07:10
Samui Airport [USM]
Sun, 14 Jun 2026

Bangkok
19:45
Suvarnabhumi Airport [BKK]
Sun , 14 Jun 2026

Ko Samui
16:55
Samui Airport [USM]
Mon, 15 Jun 2026

Bangkok
19:45
Suvarnabhumi Airport [BKK]
Sun , 14 Jun 2026

Ko Samui
13:55
Samui Airport [USM]
Mon, 15 Jun 2026

Bangkok
18:40
Suvarnabhumi Airport [BKK]
Sun , 14 Jun 2026

Ko Samui
13:55
Samui Airport [USM]
Mon, 15 Jun 2026











To crack the better offer on Bangkok to Ko Samui flights, it’s better to make advanced bookings at least few weeks prior of your intended date because price might rise eventually due to the delay.
Weekdays are the best day to get low-cost flight tickets from Bangkok to Ko Samui. However, it depends on a certain factor. If the demand is high and festivals are there, then prices could be a little high.