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

Return flights

01 Dec - 16 Dec	Ryanair
01 Dec - 06 Dec	Ryanair
01 Dec - 17 Dec	Wizz Air Malta
11 Dec - 20 Dec	Ryanair
02 Dec - 09 Dec	Ryanair
06 Dec - 14 Dec	easyJet
01 Dec - 20 Dec	Iberia
07 Dec - 20 Dec	Iberia
07 Dec - 27 Dec	Ryanair
02 Dec - 10 Dec	Qatar Airways
31 Dec - 16 Jan	Ryanair
29 Dec - 19 Jan	Ryanair
20 Dec - 03 Jan	Vueling Airlines
26 Dec - 09 Jan	Ryanair
26 Dec - 11 Jan	Ryanair
22 Dec - 04 Jan	Ryanair
26 Dec - 08 Jan	Ryanair
26 Dec - 03 Jan	Ryanair
21 Dec - 24 Jan	KLM
25 Dec - 01 Jan	Air France

Also check the deals for one-way flights from Porto 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 Porto to Bangkok in December from 574€

Return flights