Cheapest return flights from Ontario to Barcelona in September from $920

AirHint found the following cheapest return flights from Ontario (ONT) to Barcelona (BCN) in September 2026 (see full year).

Return flights

18 Sep - 26 Sep Iberia
12 Sep - 21 Sep Turkish Airlines
02 Sep - 13 Sep SWISS
03 Sep - 20 Sep jetBlue
06 Sep - 19 Sep jetBlue
06 Sep - 20 Sep jetBlue
04 Sep - 19 Sep jetBlue
03 Sep - 19 Sep jetBlue
04 Sep - 20 Sep jetBlue
04 Sep - 11 Sep Turkish Airlines
20 Sep - 02 Oct jetBlue

Also check the deals for one-way flights from Ontario to Barcelona in September.

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