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

Return flights

14 Mar - 22 Mar	Ryanair
19 Mar - 28 Mar	Iberia
04 Mar - 18 Mar	Qatar Airways
12 Mar - 19 Mar	Qatar Airways
07 Mar - 14 Mar	Qatar Airways
17 Mar - 29 Mar	Qatar Airways
22 Mar - 04 Apr	KLM
13 Mar - 01 Apr	SWISS
23 Mar - 03 Apr	Qatar Airways
21 Mar - 05 Apr	easyJet
25 Mar - 02 Apr	KLM
30 Mar - 09 Apr	KLM
28 Mar - 25 Apr	Turkish Airlines
06 Mar - 22 Mar	SWISS
28 Mar - 10 Apr	KLM
27 Mar - 05 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 651€

Return flights