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

Return flights

08 Dec - 14 Dec	Ryanair
11 Dec - 15 Dec	Iberia
08 Dec - 15 Dec	Ryanair
10 Dec - 31 Jan	easyJet
09 Dec - 16 Dec	Vueling Airlines
09 Dec - 13 Dec	Ryanair
10 Dec - 17 Dec	easyJet
06 Dec - 21 Dec	Ryanair
15 Dec - 25 Dec	Wizz Air Malta
08 Dec - 13 Dec	TAP
06 Dec - 23 Dec	Ryanair
27 Dec - 12 Jan	Iberia
27 Dec - 10 Jan	Iberia
26 Dec - 10 Jan	Air Europa
17 Dec - 02 Jan	Ryanair
27 Dec - 06 Jan	Air Europa
12 Dec - 02 Jan	Ryanair
18 Dec - 04 Jan	Ryanair
25 Dec - 01 Jan	TAP
28 Dec - 04 Jan	Ryanair

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 525€

Return flights