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

Return flights

17 Sep - 22 Oct	Ryanair
22 Sep - 29 Sep	easyJet
01 Sep - 16 Sep	Ryanair
03 Sep - 25 Sep	easyJet
16 Sep - 15 Oct	Ryanair
06 Sep - 05 Oct	Ryanair
22 Sep - 22 Oct	easyJet
26 Sep - 03 Oct	Wizz Air Malta
30 Sep - 31 Oct	easyJet
11 Sep - 24 Sep	SWISS
12 Sep - 28 Sep	Wizz Air Malta
16 Sep - 22 Oct	Ryanair
17 Sep - 26 Oct	Ryanair
24 Sep - 28 Oct	Ryanair
24 Sep - 29 Oct	Lufthansa
02 Sep - 30 Sep	Ryanair
11 Sep - 20 Sep	Ryanair
20 Sep - 23 Sep	British Airways
02 Sep - 09 Sep	KLM

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 468€

Return flights