Cheapest one-way RFD–BCN flights, September

AirHint found the following cheapest one-way flights from Rockford (RFD) to Barcelona (BCN) in September 2026 (see full year).

One-Way flights

20 Sep Allegiant Air
10 Sep Allegiant Air
06 Sep Allegiant Air
18 Sep Allegiant Air
17 Sep Allegiant Air
22 Sep Allegiant Air
23 Sep Allegiant Air
09 Sep Allegiant Air
03 Sep Allegiant Air
01 Sep Allegiant Air

Also check the deals for return flights from Rockford to Barcelona in September.

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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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