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

Return flights

25 Sep - 07 Oct	WestJet
29 Sep - 13 Oct	WestJet
25 Sep - 08 Oct	WestJet
29 Sep - 06 Oct	WestJet
29 Sep - 08 Oct	WestJet
25 Sep - 06 Oct	WestJet
25 Sep - 04 Oct	WestJet
29 Sep - 19 Oct	WestJet
30 Sep - 07 Oct	WestJet
23 Sep - 07 Oct	WestJet
23 Sep - 30 Sep	WestJet

Also check the deals for one-way flights from Halifax 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 Halifax to Oslo in September from $519

Return flights