AirHint found the following cheapest return flights from Tampa (TPA) to Lisbon (LIS) in September 2025 (see full year).

Return flights

09 Sep - 17 Sep	Frontier Airlines
06 Sep - 14 Sep	Frontier Airlines
09 Sep - 15 Sep	Frontier Airlines
07 Sep - 27 Sep	Frontier Airlines
13 Sep - 27 Sep	Frontier Airlines
06 Sep - 13 Sep	Frontier Airlines
24 Sep - 04 Oct	Frontier Airlines
28 Sep - 05 Oct	United
10 Sep - 17 Sep	United
16 Sep - 23 Sep	United
04 Sep - 17 Sep	United
22 Sep - 29 Sep	United
26 Sep - 03 Oct	United

Also check the deals for one-way flights from Tampa to Lisbon in September.

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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Cheapest return flights from Tampa to Lisbon in September from $576

Return flights