AirHint found the following cheapest return flights from Porto (OPO) to Bangkok (BKK) in March 2026 (see full year).

Return flights

05 Mar - 11 Mar	Ryanair
05 Mar - 18 Mar	Ryanair
05 Mar - 19 Mar	Ryanair
08 Mar - 19 Mar	KLM
07 Mar - 19 Mar	Ryanair
10 Mar - 23 Mar	Vueling Airlines
10 Mar - 19 Mar	Ryanair
07 Mar - 21 Mar	Ryanair
06 Mar - 28 Mar	easyJet
09 Mar - 18 Mar	Iberia
05 Mar - 02 Apr	Ryanair
20 Mar - 01 Apr	easyJet
20 Mar - 03 Apr	easyJet
21 Mar - 01 Apr	easyJet
20 Mar - 05 Apr	easyJet
26 Mar - 14 Apr	Ryanair
22 Mar - 03 Apr	KLM
26 Mar - 13 Apr	Ryanair
26 Mar - 06 Apr	Ryanair
29 Mar - 13 Apr	Vueling Airlines

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

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 March from $625

Return flights