AirHint found the following cheapest return flights from Hamburg (HAM) to Oslo (OSL) in September 2025 (see full year).

Return flights

16 Sep - 19 Sep	Wizz Air
21 Sep - 22 Sep	Wizz Air
23 Sep - 24 Sep	Wizz Air
16 Sep - 17 Sep	Wizz Air
16 Sep - 23 Sep	Wizz Air
21 Sep - 24 Sep	Wizz Air
21 Sep - 25 Sep	Wizz Air
17 Sep - 24 Sep	Wizz Air
30 Sep - 07 Oct	Wizz Air
29 Sep - 02 Oct	Wizz Air
11 Sep - 15 Sep	Wizz Air
17 Sep - 23 Sep	Wizz Air
30 Sep - 01 Oct	Wizz Air
29 Sep - 06 Oct	Norwegian
30 Sep - 05 Oct	Norwegian
30 Sep - 13 Oct	Norwegian	direct
30 Sep - 16 Oct	Norwegian	direct
30 Sep - 09 Oct	Norwegian	direct
30 Sep - 21 Oct	Norwegian	direct
30 Sep - 12 Oct	Norwegian	direct

Also check the deals for one-way flights from Hamburg to Oslo 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 Hamburg to Oslo in September from $81

Return flights