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

Return flights

04 Sep - 17 Sep	easyJet
06 Sep - 19 Sep	Norwegian Air Sweden AOC
24 Sep - 28 Sep	TAP
20 Sep - 26 Sep	IndiGo
25 Sep - 28 Sep	IndiGo
23 Sep - 27 Sep	IndiGo
24 Sep - 30 Sep	IndiGo
21 Sep - 28 Sep	IndiGo
24 Sep - 29 Sep	IndiGo
23 Sep - 29 Sep	IndiGo
24 Sep - 01 Oct	IndiGo
30 Sep - 08 Oct	IndiGo
29 Sep - 03 Oct	IndiGo
29 Sep - 05 Oct	IndiGo
28 Sep - 12 Oct	IndiGo

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

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 Abu Dhabi in September from 399€

Return flights