Cheapest return flights from Porto to Bangkok in September from $694

Best time to book flights for Porto (OPO) to Bangkok (BKK) flights at AirHint

AirHint found the following cheapest return flights from Porto (OPO) to Bangkok (BKK) in September 2025 (see full year).

Return flights

16 Sep - 30 Sep easyJet
23 Sep - 30 Sep easyJet
09 Sep - 16 Sep easyJet
16 Sep - 05 Oct Austrian Airlines
14 Sep - 26 Sep Ryanair
22 Sep - 05 Oct Austrian Airlines
19 Sep - 29 Sep Lufthansa
08 Sep - 15 Sep Iberia
28 Sep - 29 Oct Austrian Airlines
01 Sep - 30 Sep Iberia
15 Sep - 29 Sep Austrian Airlines
18 Sep - 25 Sep KLM
13 Sep - 24 Sep KLM
30 Sep - 16 Oct Austrian Airlines
28 Sep - 12 Oct Air France

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

Skyscanner

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.

Book a cheap hotel in Bangkok

Cheap car rent in Bangkok