AirHint found the following cheapest return flights from St. John's (YYT) to Barcelona (BCN) in September 2025 (see full year).

Return flights

23 Sep - 15 Oct	WestJet
23 Sep - 08 Oct	WestJet
26 Sep - 08 Oct	WestJet
30 Sep - 08 Oct	WestJet
23 Sep - 01 Oct	WestJet
23 Sep - 06 Oct	WestJet
30 Sep - 06 Oct	WestJet
26 Sep - 01 Oct	WestJet
26 Sep - 20 Oct	WestJet
23 Sep - 09 Oct	WestJet
23 Sep - 30 Sep	WestJet

Also check the deals for one-way flights from St. John's to Barcelona 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 St. John's to Barcelona in September from $412

Return flights