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

Return flights

01 Dec - 21 Dec	easyJet
24 Dec - 16 Jan	easyJet
26 Dec - 11 Jan	British Airways
18 Dec - 28 Jan	KLM
17 Dec - 10 Jan	easyJet
09 Dec - 02 Jan	British Airways
19 Dec - 26 Dec	KLM
16 Dec - 13 Jan	KLM
19 Dec - 10 Jan	British Airways
10 Dec - 02 Jan	British Airways

Also check the deals for one-way flights from Belfast 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 Belfast to Bangkok in December from 654€

Return flights