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

Return flights

30 Apr - 11 May	SWISS
29 Apr - 09 May	SWISS
10 Apr - 20 Apr	SWISS
20 Apr - 04 May	SWISS
24 Apr - 13 May	SWISS
13 Apr - 26 Apr	SWISS
14 Apr - 29 Apr	Qatar Airways
27 Apr - 13 May	Qatar Airways
19 Apr - 29 Apr	SWISS
14 Apr - 27 Apr	SWISS
10 Apr - 24 Apr	Norwegian
24 Apr - 03 May	Qatar Airways
01 Apr - 15 Apr	SWISS
02 Apr - 13 Apr	SWISS
01 Apr - 12 Apr	Norwegian
06 Apr - 20 Apr	Turkish Airlines
20 Apr - 02 May	SWISS

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

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 April from 602€

Return flights