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

Return flights

02 Jul - 28 Aug	SWISS
17 Jul - 20 Jul	Delta
09 Jul - 19 Jul	Delta
17 Jul - 21 Jul	Delta
10 Jul - 14 Jul	Delta
17 Jul - 26 Jul	Delta
04 Jul - 14 Jul	Delta
07 Jul - 14 Jul	Delta
21 Jul - 28 Jul	Air France
30 Jul - 11 Aug	Air France
08 Jul - 29 Jul	Delta
22 Jul - 27 Jul	Delta
23 Jul - 06 Aug	Delta
22 Jul - 05 Aug	Delta
22 Jul - 10 Aug	Delta
24 Jul - 03 Aug	SWISS
25 Jul - 06 Aug	SWISS
15 Jul - 24 Aug	SWISS
25 Jul - 11 Aug	SWISS
22 Jul - 06 Aug	SWISS

Also check the deals for one-way flights from Lisbon to Newark 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 Lisbon to Newark in July from $576

Return flights