AirHint found the following cheapest return flights from Newark (EWR) to Lisbon (LIS) in July 2025 (see full year).

Return flights

30 Jul - 07 Aug	Icelandair
30 Jul - 28 Aug	Icelandair
30 Jul - 03 Aug	Icelandair
15 Jul - 22 Jul	Air Canada
27 Jul - 13 Aug	Air Canada
26 Jul - 10 Aug	Icelandair
22 Jul - 12 Aug	Delta
27 Jul - 12 Aug	Air Canada
21 Jul - 21 Aug	Delta
28 Jul - 22 Aug	Delta
28 Jul - 13 Aug	Air Canada
16 Jul - 27 Jul	Icelandair
16 Jul - 25 Jul	Air Canada
14 Jul - 22 Jul	Air Canada
19 Jul - 31 Jul	Icelandair
15 Jul - 21 Jul	Air Canada
18 Jul - 25 Jul	Air Canada
17 Jul - 22 Jul	Air Canada
16 Jul - 23 Jul	Air Canada
16 Jul - 28 Jul	Air Canada

Also check the deals for one-way flights from Newark to Lisbon in July.

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 July from $442

Return flights