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

Return flights

25 Sep - 11 Oct	easyJet
25 Sep - 08 Oct	easyJet
25 Sep - 10 Oct	easyJet
21 Sep - 07 Oct	Ryanair
24 Sep - 15 Oct	easyJet
22 Sep - 29 Sep	Wizz Air Malta
09 Sep - 05 Oct	Transavia France
15 Sep - 19 Oct	Wizz Air Malta
11 Sep - 27 Sep	Ryanair
18 Sep - 25 Sep	easyJet
11 Sep - 24 Sep	KLM
29 Sep - 29 Oct	Ryanair
09 Sep - 16 Sep	Ryanair
30 Sep - 31 Oct	Ryanair
08 Sep - 15 Sep	Air Europa
08 Sep - 30 Sep	easyJet
16 Sep - 23 Sep	Ryanair
05 Sep - 17 Sep	easyJet
05 Sep - 12 Sep	easyJet
25 Sep - 30 Oct	SWISS

Also check the deals for one-way flights from Porto to Delhi 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 Delhi in September from 429€

Return flights