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

Return flights

04 Mar - 11 Mar	Air Europa
19 Mar - 26 Mar	easyJet
02 Mar - 23 Mar	British Airways
02 Mar - 14 Mar	British Airways
04 Mar - 14 Mar	Qatar Airways
06 Mar - 14 Mar	Qatar Airways
01 Mar - 16 Mar	Qatar Airways
10 Mar - 31 Mar	Qatar Airways
26 Mar - 14 Apr	Austrian Airlines
26 Mar - 13 Apr	Austrian Airlines
26 Mar - 02 Apr	Turkish Airlines
01 Mar - 21 Mar	Lufthansa
27 Mar - 11 Apr	Air France

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 $690

Return flights