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

Return flights

28 May - 11 Jun	Norwegian	direct
28 May - 31 May	Norwegian	direct
28 May - 07 Jun	Norwegian	direct
31 May - 11 Jun	Norwegian	direct
31 May - 07 Jun	Norwegian	direct
27 May - 11 Jun	Vueling Airlines
27 May - 31 May	Vueling Airlines
27 May - 07 Jun	Vueling Airlines
26 May - 31 May	easyJet
29 May - 09 Jun	Wizz Air
30 May - 06 Jun	KLM
14 May - 17 May	easyJet

Also check the deals for one-way flights from Basel 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.

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Cheapest return flights from Basel to Oslo in May from 96€

Return flights