Cheapest one-way flights from Key West to St. Petersburg in March from $53

AirHint found the following cheapest one-way flights from Key West (EYW) to St. Petersburg (PIE) in March 2026 (see full year).

One-Way flights

13 Mar Allegiant Air direct
20 Mar Allegiant Air direct
01 Mar Allegiant Air direct

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

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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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