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

Return flights

30 May - 31 May	Norwegian	direct
27 May - 31 May	Norwegian	direct
05 May - 09 May	KLM
01 May - 05 May	LOT
02 May - 06 May	KLM
01 May - 09 May	Norwegian Air Sweden AOC
12 May - 31 May	Norwegian Air Sweden AOC
02 May - 09 May	Norwegian	direct
01 May - 06 May	Norwegian Air Sweden AOC
02 May - 23 May	Norwegian	direct

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

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.

Book a cheap hotel in Oslo

Cheap car rent in Oslo

Cheapest return flights from Athens to Oslo in May from $139

Return flights