AirHint found the following cheapest return flights from New York (NYC) to Lisbon (LIS) in August 2026 (see full year).

Return flights

20 Aug - 27 Aug	Air Europa
27 Aug - 03 Sep	Air Europa
13 Aug - 21 Aug	Air Europa
26 Aug - 02 Sep	Scandinavian Airlines
19 Aug - 27 Aug	Iberia
18 Aug - 25 Aug	Air Europa
28 Aug - 05 Sep	Scandinavian Airlines
28 Aug - 04 Sep	Air Europa
23 Aug - 05 Sep	Scandinavian Airlines
19 Aug - 26 Aug	Scandinavian Airlines
18 Aug - 26 Aug	Air Europa
04 Aug - 20 Aug	Air Europa
19 Aug - 03 Sep	United
21 Aug - 28 Aug	Aer Lingus
06 Aug - 25 Aug	Air Europa
11 Aug - 25 Aug	Air Europa
19 Aug - 04 Sep	Iberia
27 Aug - 03 Sep	TAP	direct
26 Aug - 02 Sep	TAP	direct
19 Aug - 03 Sep	TAP	direct

Also check the deals for one-way flights from New York to Lisbon in August.

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 New York to Lisbon in August from 445€

Return flights