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

Return flights

11 Mar - 14 Mar	Ryanair
08 Mar - 14 Mar	Ryanair
05 Mar - 13 Mar	Air Europa
08 Mar - 23 Mar	Ryanair
03 Mar - 10 Mar	Vueling Airlines
08 Mar - 13 Mar	Air Europa
07 Mar - 22 Mar	Ryanair
03 Mar - 13 Mar	Air Europa
09 Mar - 22 Mar	Ryanair
10 Mar - 23 Mar	Ryanair
20 Mar - 07 Apr	Vueling Airlines
28 Mar - 02 Apr	Ryanair
21 Mar - 10 Apr	Ryanair
19 Mar - 05 Apr	Ryanair
28 Mar - 16 Apr	Ryanair
18 Mar - 10 Apr	easyJet
27 Mar - 08 Apr	Ryanair
28 Mar - 10 Apr	Ryanair
31 Mar - 14 Apr	Wizz Air Malta
27 Mar - 10 Apr	Ryanair

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 497€

Return flights