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

Return flights

16 Sep - 24 Sep	easyJet
06 Sep - 10 Sep	easyJet
01 Sep - 07 Sep	easyJet
10 Sep - 20 Sep	Wizz Air
16 Sep - 23 Sep	easyJet
08 Sep - 14 Sep	easyJet
02 Sep - 09 Sep	Wizz Air Malta
06 Sep - 09 Sep	Wizz Air
13 Sep - 20 Sep	Ryanair
01 Sep - 10 Sep	Wizz Air
27 Sep - 14 Oct	Wizz Air	direct
27 Sep - 02 Oct	Wizz Air	direct
27 Sep - 16 Oct	Wizz Air	direct
27 Sep - 11 Oct	Wizz Air	direct
27 Sep - 07 Oct	Wizz Air	direct
20 Sep - 09 Oct	Wizz Air	direct
27 Sep - 04 Oct	Wizz Air	direct
20 Sep - 02 Oct	Wizz Air	direct
18 Sep - 02 Oct	Wizz Air	direct
13 Sep - 02 Oct	Wizz Air	direct

Also check the deals for one-way flights from Budapest to Keflavik 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 Budapest to Keflavik in September from $162

Return flights