Cheapest one-way flights from Philadelphia (PHL) to St. Petersburg (PIE), September

Select a price to book. see full year.

Dates, airline, and price
Dates Airline Price
06 Sep Allegiant Air
Direct Flight
21 Sep Allegiant Air
14 Sep Allegiant Air
15 Sep Frontier Airlines
13 Sep Allegiant Air
17 Sep Allegiant Air
09 Sep Frontier Airlines
16 Sep Frontier Airlines
24 Sep Frontier Airlines
08 Sep Frontier Airlines
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deals for return flights from Philadelphia to St. Petersburg in September.

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Updated Aug 26, 2026.

About these fares

These results come from our latest search across airlines for your currency. Prices change quickly and are not locked until you complete booking—always confirm the total and fare rules on the partner site.

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