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

Return flights

17 Sep - 23 Sep	easyJet
18 Sep - 23 Sep	easyJet
29 Sep - 06 Oct	easyJet
24 Sep - 26 Sep	Ryanair
24 Sep - 01 Oct	Ryanair
23 Sep - 26 Sep	Ryanair
21 Sep - 26 Sep	Ryanair	direct
23 Sep - 30 Sep	easyJet
22 Sep - 24 Sep	easyJet
20 Sep - 24 Sep	easyJet
19 Sep - 26 Sep	Ryanair
21 Sep - 03 Oct	Ryanair	direct
21 Sep - 10 Oct	Ryanair	direct
24 Sep - 30 Sep	Ryanair
28 Sep - 03 Oct	Wizz Air Malta
21 Sep - 05 Oct	Ryanair	direct
28 Sep - 10 Oct	Ryanair
25 Sep - 01 Oct	easyJet
28 Sep - 05 Oct	Ryanair
19 Sep - 03 Oct	Ryanair	direct

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 $142

Return flights