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

Return flights

07 Oct - 21 Oct	easyJet
14 Oct - 21 Oct	easyJet
16 Oct - 22 Oct	Ryanair
02 Oct - 09 Oct	Ryanair
02 Oct - 23 Oct	Air Europa
30 Oct - 17 Nov	Ryanair
02 Oct - 22 Oct	Air Europa
03 Oct - 23 Oct	Ryanair
03 Oct - 20 Oct	Ryanair
01 Oct - 10 Oct	Ryanair
01 Oct - 15 Oct	easyJet
31 Oct - 16 Nov	Turkish Airlines
29 Oct - 17 Nov	Turkish Airlines
31 Oct - 17 Nov	Turkish Airlines
30 Oct - 16 Nov	KLM
31 Oct - 15 Nov	Turkish Airlines

Also check the deals for one-way flights from Porto to Bangkok in October.

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 October from 590€

Return flights