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

Return flights

24 Jul - 31 Aug	SWISS
19 Jul - 21 Jul	Delta
23 Jul - 27 Jul	Delta
19 Jul - 25 Aug	Delta
14 Jul - 22 Jul	KLM
14 Jul - 21 Jul	KLM
22 Jul - 30 Jul	Delta
22 Jul - 28 Jul	Delta
21 Jul - 27 Aug	Delta
17 Jul - 23 Jul	KLM
22 Jul - 29 Jul	Air France
18 Jul - 21 Jul	Air France
25 Jul - 11 Aug	Air France
25 Jul - 06 Aug	Delta
30 Jul - 11 Aug	Air France
18 Jul - 23 Jul	Delta
25 Jul - 03 Aug	Delta
30 Jul - 04 Aug	Delta
20 Jul - 31 Aug	SWISS
26 Jul - 03 Aug	Brussels Airlines	direct

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 508€

Return flights