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

Return flights

24 Mar - 03 Apr	Qatar Airways
05 Mar - 12 Mar	easyJet
15 Mar - 22 Mar	Ryanair
19 Mar - 02 Apr	Ryanair
02 Mar - 18 Mar	Qatar Airways
24 Mar - 02 Apr	Qatar Airways
28 Mar - 05 Apr	TAP
08 Mar - 22 Mar	Qatar Airways
20 Mar - 27 Mar	Qatar Airways
05 Mar - 14 Mar	Qatar Airways
15 Mar - 15 Apr	Lufthansa
29 Mar - 05 Apr	Vueling Airlines
30 Mar - 09 Apr	SWISS
31 Mar - 09 Apr	SWISS
30 Mar - 10 Apr	SWISS
31 Mar - 11 Apr	Turkish 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 672€

Return flights