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

Return flights

04 Sep - 15 Sep	Spirit Airlines
29 Sep - 21 Oct	Norse Atlantic Airways (UK)
05 Sep - 15 Sep	Spirit Airlines
09 Sep - 23 Sep	Spirit Airlines
20 Sep - 27 Sep	Norse Atlantic Airways (UK)
22 Sep - 11 Oct	Frontier Airlines
09 Sep - 12 Sep	Spirit Airlines
13 Sep - 04 Oct	Norse Atlantic Airways (UK)
27 Sep - 18 Oct	Norse Atlantic Airways (UK)
12 Sep - 15 Sep	Frontier Airlines
16 Sep - 21 Oct	Spirit Airlines
23 Sep - 30 Sep	United
29 Sep - 06 Oct	United
17 Sep - 24 Sep	United
27 Sep - 04 Oct	United
25 Sep - 02 Oct	United
21 Sep - 28 Sep	United
19 Sep - 26 Sep	United

Also check the deals for one-way flights from Orlando 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 Orlando to Lisbon in September from $600

Return flights