Cheapest return flights from St. Petersburg to Key West in August from $81

AirHint found the following cheapest return flights from St. Petersburg (PIE) to Key West (EYW) in August 2025 (see full year).

Return flights

14 Aug - 17 Aug Allegiant Air direct
08 Aug - 11 Aug Allegiant Air direct
15 Aug - 15 Aug Allegiant Air direct
15 Aug - 16 Aug Allegiant Air direct
15 Aug - 23 Aug Allegiant Air direct
15 Aug - 27 Aug Allegiant Air direct
15 Aug - 29 Aug Allegiant Air direct
15 Aug - 30 Aug Allegiant Air direct
15 Aug - 31 Aug Allegiant Air direct
15 Aug - 18 Aug Allegiant Air direct
15 Aug - 03 Sep Allegiant Air direct
13 Aug - 03 Sep Allegiant Air direct
16 Aug - 03 Sep Allegiant Air direct
17 Aug - 03 Sep Allegiant Air direct
20 Aug - 03 Sep Allegiant Air direct
25 Aug - 03 Sep Allegiant Air direct
28 Aug - 03 Sep Allegiant Air direct
27 Aug - 03 Sep Allegiant Air direct
31 Aug - 03 Sep Allegiant Air direct
23 Aug - 03 Sep Allegiant Air direct

Also check the deals for one-way flights from St. Petersburg to Key West in August.

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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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