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

Return flights

25 Jul - 07 Aug	United	direct
30 Jul - 28 Aug	Icelandair
30 Jul - 07 Aug	Icelandair
28 Jul - 29 Aug	Air France
28 Jul - 22 Aug	United
29 Jul - 12 Aug	Delta
18 Jul - 25 Jul	United	direct
21 Jul - 29 Jul	United	direct
21 Jul - 21 Aug	Delta
18 Jul - 21 Jul	United
22 Jul - 31 Jul	United
28 Jul - 29 Aug	TAP	direct
29 Jul - 05 Aug	United	direct
28 Jul - 06 Aug	TAP	direct
08 Jul - 15 Jul	Air Canada
20 Jul - 29 Jul	United
25 Jul - 29 Jul	United	direct
20 Jul - 28 Jul	TAP
18 Jul - 23 Jul	United	direct
23 Jul - 28 Jul	Turkish Airlines

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 404€

Return flights