Cheapest return flights from St. Petersburg to Rockford in September from $111

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

Return flights

05 Sep - 08 Sep Allegiant Air direct
26 Sep - 29 Sep Allegiant Air direct
12 Sep - 15 Sep Allegiant Air direct
19 Sep - 22 Sep Allegiant Air direct
05 Sep - 12 Sep Allegiant Air direct
29 Sep - 06 Oct Allegiant Air direct
15 Sep - 26 Sep Allegiant Air direct
26 Sep - 06 Oct Allegiant Air direct
22 Sep - 26 Sep Allegiant Air direct
29 Sep - 10 Oct Allegiant Air direct
26 Sep - 10 Oct Allegiant Air direct
22 Sep - 06 Oct Allegiant Air direct
05 Sep - 15 Sep Allegiant Air direct
22 Sep - 10 Oct Allegiant Air direct
15 Sep - 22 Sep Allegiant Air direct
05 Sep - 22 Sep Allegiant Air direct

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