Cheapest return ATH–OSL flights, September

AirHint found the following cheapest return flights from Athens (ATH) to Oslo (OSL) in September 2026 (see full year).

Return flights

23 Sep - 28 Sep Wizz Air Malta
08 Sep - 16 Sep LOT
24 Sep - 28 Sep Ryanair
10 Sep - 13 Sep Ryanair
25 Sep - 27 Sep Air Serbia
25 Sep - 30 Sep Air Serbia
18 Sep - 23 Sep Air Serbia
19 Sep - 23 Sep Air Serbia
04 Sep - 06 Sep Air Serbia
21 Sep - 30 Sep Air Serbia
25 Sep - 04 Oct Air Serbia
26 Sep - 04 Oct Air Serbia
28 Sep - 17 Oct Norwegian direct
28 Sep - 19 Oct Norwegian direct
28 Sep - 18 Oct Norwegian direct
26 Sep - 17 Oct Norwegian direct
16 Sep - 04 Oct Norwegian direct
25 Sep - 04 Oct Aegean Airlines direct
16 Sep - 06 Oct Norwegian
30 Sep - 17 Oct Norwegian Air Sweden AOC

Also check the deals for one-way flights from Athens to Oslo in September.

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