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

Return flights

03 May - 11 May	TAP	direct
15 May - 19 May	Aer Lingus
14 May - 17 May	Aer Lingus
14 May - 24 May	Aer Lingus
06 May - 13 May	TAP	direct
06 May - 30 May	British Airways
09 May - 30 May	British Airways
16 May - 29 May	British Airways
21 May - 26 May	SWISS
21 May - 01 Jun	SWISS
21 May - 02 Jun	SWISS
26 May - 06 Jun	Iberia
28 May - 12 Jun	Iberia
28 May - 11 Jun	Iberia
25 May - 31 May	Aer Lingus
25 May - 17 Jun	British Airways
14 May - 06 Jun	SWISS
15 May - 06 Jun	Brussels Airlines
19 May - 13 Jun	Brussels Airlines
20 May - 13 Jun	Brussels Airlines

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 378€

Return flights