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

Return flights

13 Oct - 27 Oct	easyJet
16 Oct - 30 Oct	Ryanair
01 Oct - 31 Oct	easyJet
01 Oct - 08 Oct	easyJet
05 Oct - 23 Oct	easyJet
07 Oct - 21 Oct	easyJet
09 Oct - 22 Oct	Ryanair
07 Oct - 14 Oct	Ryanair
01 Oct - 15 Oct	easyJet
06 Oct - 20 Oct	easyJet
29 Oct - 17 Nov	Iberia
30 Oct - 17 Nov	Qatar Airways
30 Oct - 16 Nov	British Airways

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 $612

Return flights