Cheapest one-way flights from St. Petersburg to Key West in October from $48

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

One-Way flights

04 Oct Allegiant Air direct
17 Oct Allegiant Air direct

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

Skyscanner

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.

Book a cheap hotel in Key West

Cheap car rent in Key West

Feel free to contact us with any feedback or request another flight research.