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

Return flights

31 Aug - 07 Sep	TAP
18 Aug - 25 Aug	Air Canada
21 Aug - 28 Aug	Air Canada
20 Aug - 05 Sep	Scandinavian Airlines
19 Aug - 26 Aug	Air Canada
29 Aug - 05 Sep	Scandinavian Airlines
25 Aug - 01 Sep	Air Canada
26 Aug - 02 Sep	Air Canada
27 Aug - 03 Sep	Air Canada
20 Aug - 27 Aug	Air Canada
13 Aug - 28 Aug	Air Canada
06 Aug - 31 Aug	Air Canada
14 Aug - 21 Aug	Air Canada
17 Aug - 24 Aug	Air Canada
30 Aug - 07 Sep	TAP
29 Aug - 06 Sep	Icelandair
28 Aug - 04 Sep	Scandinavian Airlines
30 Aug - 06 Sep	TAP
24 Aug - 31 Aug	Air Canada
18 Aug - 27 Aug	Air Canada

Also check the deals for one-way flights from Newark 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 Newark to Lisbon in August from 451€

Return flights