AirHint found the following cheapest return flights from Rotterdam (RTM) to Bangkok (BKK) in December 2025 (see full year).

Return flights

29 Dec - 26 Jan	Pegasus Airlines
12 Dec - 30 Dec	transavia
25 Dec - 28 Jan	transavia
05 Dec - 29 Dec	transavia
30 Dec - 27 Jan	British Airways
29 Dec - 25 Jan	British Airways
29 Dec - 27 Jan	British Airways
29 Dec - 31 Jan	British Airways
05 Dec - 05 Jan	transavia
01 Dec - 07 Jan	British Airways
04 Dec - 06 Jan	British Airways
28 Dec - 27 Jan	British Airways
19 Dec - 23 Dec	British Airways

Also check the deals for one-way flights from Rotterdam to Bangkok in December.

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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Cheapest return flights from Rotterdam to Bangkok in December from $926

Return flights