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

Return flights

06 May - 13 May	Air Canada
06 May - 13 May	TAP	direct
21 May - 27 May	SWISS
22 May - 01 Jun	Air Canada
17 May - 24 May	TAP
22 May - 01 Jun	TAP	direct
01 May - 15 May	SWISS
17 May - 24 May	United	direct
01 May - 15 May	Brussels Airlines	direct

Also check the deals for one-way flights from Newark to Lisbon 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 Newark to Lisbon in May from 374€

Return flights