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

Return flights

08 May - 14 May	SWISS
04 May - 16 May	TAP	direct
11 May - 25 May	Air Canada
11 May - 25 May	TAP	direct
14 May - 28 May	TAP	direct
22 May - 26 May	Air Canada
22 May - 26 May	TAP	direct
25 May - 31 May	TAP	direct
08 May - 14 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 393€

Return flights