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

Return flights

03 Mar - 16 Mar	Iberia
01 Mar - 09 Mar	Lufthansa
19 Mar - 28 Mar	Ryanair
16 Mar - 24 Mar	British Airways
05 Mar - 19 Mar	Qatar Airways
04 Mar - 19 Mar	Qatar Airways
09 Mar - 19 Mar	Qatar Airways
18 Mar - 01 Apr	Qatar Airways
04 Mar - 20 Mar	Qatar Airways
28 Mar - 05 Apr	KLM
14 Mar - 30 Mar	Qatar Airways
20 Mar - 10 Apr	SWISS
26 Mar - 11 Apr	KLM
20 Mar - 11 Apr	KLM
21 Mar - 11 Apr	KLM
22 Mar - 11 Apr	KLM
23 Mar - 11 Apr	KLM
27 Mar - 11 Apr	Air France
27 Mar - 05 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 641€

Return flights