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

Return flights

20 May - 25 May	TAP
27 May - 03 Jun	TAP
19 May - 24 May	SWISS
21 May - 24 May	SWISS
12 May - 21 May	SWISS
15 May - 21 May	SWISS
19 May - 31 May	Lufthansa
01 May - 10 May	SWISS
06 May - 20 May	TAP
14 May - 22 May	SWISS
23 May - 29 May	SWISS
19 May - 19 Jun	TAP	direct
27 May - 03 Jun	TAP	direct

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

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 May from 428€

Return flights