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

Return flights

26 Sep - 06 Oct	Ryanair
25 Sep - 07 Oct	Ryanair
25 Sep - 06 Oct	Ryanair
26 Sep - 08 Oct	Ryanair
24 Sep - 29 Sep	Ryanair
25 Sep - 02 Oct	Ryanair
23 Sep - 26 Sep	Ryanair
15 Sep - 20 Sep	Ryanair
22 Sep - 26 Sep	Ryanair
22 Sep - 25 Sep	Vueling Airlines
16 Sep - 19 Sep	easyJet
11 Sep - 18 Sep	Vueling Airlines
09 Sep - 16 Sep	Ryanair
11 Sep - 15 Sep	Vueling Airlines
08 Sep - 15 Sep	Ryanair

Also check the deals for one-way flights from Porto to Vilnius 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 Vilnius in September from 164€

Return flights