Cheapest one-way ATL–LIS flights, September

AirHint found the following cheapest one-way flights from Atlanta (ATL) to Lisbon (LIS) in September 2026 (see full year).

One-Way flights

27 Sep British Airways
23 Sep British Airways
20 Sep American Airlines
21 Sep American Airlines
22 Sep American Airlines
30 Sep British Airways
26 Sep Delta
19 Sep Delta
12 Sep Frontier Airlines
05 Sep Frontier Airlines

Also check the deals for return flights from Atlanta to Lisbon in September.

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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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