Cheapest one-way flights from Key West to St. Petersburg in December from $43

AirHint found the following cheapest one-way flights from Key West (EYW) to St. Petersburg (PIE) in December 2025 (see full year).

One-Way flights

01 Dec Allegiant Air direct
28 Dec Allegiant Air direct
29 Dec Allegiant Air direct
26 Dec Allegiant Air direct
22 Dec Allegiant Air direct
07 Dec Allegiant Air direct
10 Dec Allegiant Air direct
11 Dec Allegiant Air direct
12 Dec Allegiant Air direct
13 Dec Allegiant Air direct

Also check the deals for return flights from Key West to St. Petersburg in December.

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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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