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

Return flights

20 Apr - 05 May	SWISS
29 Apr - 12 May	SWISS
20 Apr - 06 May	SWISS
20 Apr - 07 May	SWISS
20 Apr - 08 May	SWISS
21 Apr - 08 May	SWISS
02 Apr - 14 Apr	SWISS
02 Apr - 13 Apr	SWISS
19 Apr - 29 Apr	SWISS
03 Apr - 12 Apr	Turkish Airlines
02 Apr - 11 Apr	Turkish Airlines
29 Apr - 05 May	Turkish Airlines
01 Apr - 08 Apr	Air France

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 $784

Return flights