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

Return flights

01 May - 04 May	SWISS
08 May - 11 May	SWISS
19 May - 09 Jun	Air Canada
10 May - 16 May	TAP	direct
26 May - 04 Jun	Lufthansa
27 May - 08 Jun	Air Canada
19 May - 09 Jun	TAP	direct
01 May - 04 May	TAP	direct
08 May - 11 May	TAP	direct
15 May - 18 May	SWISS
15 May - 18 May	TAP	direct
26 May - 04 Jun	TAP	direct
23 May - 30 May	TAP	direct
27 May - 08 Jun	TAP	direct

Also check the deals for one-way flights from New York 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 New York to Lisbon in May from 403€

Return flights