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

Return flights

30 Sep - 07 Oct	easyJet
29 Sep - 07 Oct	easyJet
29 Sep - 01 Oct	easyJet
30 Sep - 01 Oct	Ryanair
30 Sep - 04 Oct	Ryanair
29 Sep - 30 Sep	easyJet
21 Sep - 05 Oct	Ryanair
27 Sep - 04 Oct	Ryanair
29 Sep - 06 Oct	easyJet
30 Sep - 09 Oct	Ryanair
27 Sep - 07 Oct	Ryanair
21 Sep - 24 Sep	Ryanair
23 Sep - 30 Sep	Ryanair
17 Sep - 24 Sep	Ryanair
17 Sep - 23 Sep	Ryanair
17 Sep - 20 Sep	Ryanair
17 Sep - 27 Sep	Ryanair
24 Sep - 30 Sep	Ryanair
21 Sep - 23 Sep	Ryanair
16 Sep - 20 Sep	Ryanair

Also check the deals for one-way flights from Porto to Budapest 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 Budapest in September from $147

Return flights