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

Return flights

02 Dec - 14 Dec	Ryanair
02 Dec - 09 Dec	Ryanair
01 Dec - 13 Dec	Iberia
01 Dec - 10 Dec	Wizz Air Malta
04 Dec - 22 Dec	Air Europa
06 Dec - 20 Dec	Air Europa
11 Dec - 23 Dec	Ryanair
06 Dec - 16 Dec	Air France
07 Dec - 11 Dec	Air France
17 Dec - 31 Dec	Ryanair
24 Dec - 06 Jan	Ryanair
28 Dec - 12 Jan	KLM
27 Dec - 12 Jan	KLM
22 Dec - 05 Jan	Qatar Airways
28 Dec - 11 Jan	KLM
27 Dec - 11 Jan	KLM
22 Dec - 02 Jan	British Airways
28 Dec - 10 Jan	SWISS
26 Dec - 04 Jan	Emirates
20 Dec - 04 Jan	Emirates

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.

Book a cheap hotel in Bangkok

Cheap car rent in Bangkok

Cheapest return flights from Porto to Bangkok in December from $631

Return flights