AirHint found the following cheapest return flights from St. Petersburg (PIE) to Rockford (RFD) in October 2025 (see full year).

Return flights

03 Oct - 06 Oct	Allegiant Air	direct
13 Oct - 20 Oct	Allegiant Air	direct
03 Oct - 20 Oct	Allegiant Air	direct
03 Oct - 10 Oct	Allegiant Air	direct
14 Oct - 17 Oct	Allegiant Air
24 Oct - 26 Oct	Allegiant Air

Also check the deals for one-way flights from St. Petersburg to Rockford in October.

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. Petersburg to Rockford in October from $120

Return flights