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

Return flights

09 Dec - 16 Dec	Ryanair
09 Dec - 21 Dec	easyJet
13 Dec - 20 Dec	easyJet
20 Dec - 24 Dec	Ryanair
27 Dec - 10 Jan	Air Europa
09 Dec - 19 Dec	Ryanair
24 Dec - 07 Jan	easyJet
20 Dec - 22 Dec	Ryanair
21 Dec - 29 Dec	Air Europa
27 Dec - 06 Jan	Iberia
23 Dec - 27 Dec	Vueling Airlines
27 Dec - 12 Jan	Ryanair
16 Dec - 19 Dec	Wizz Air Malta
26 Dec - 12 Jan	Air Europa
12 Dec - 02 Jan	Ryanair
26 Dec - 10 Jan	transavia
20 Dec - 02 Jan	Ryanair
26 Dec - 31 Dec	easyJet
29 Dec - 04 Jan	Ryanair
16 Dec - 04 Jan	easyJet

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 $784

Return flights