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

Return flights

16 May - 20 May	Aer Lingus
04 May - 10 May	Aer Lingus
07 May - 19 May	British Airways
05 May - 13 May	SWISS
18 May - 25 May	Aer Lingus
15 May - 25 May	Aer Lingus
15 May - 26 May	Aer Lingus
03 May - 11 May	SWISS
15 May - 27 May	Aer Lingus
22 May - 25 May	Aer Lingus
31 May - 15 Jun	SWISS
29 May - 07 Jun	SWISS
28 May - 01 Jun	British Airways
20 May - 01 Jun	LEVEL
25 May - 02 Jun	Azores Airlines
28 May - 02 Jun	Norse Atlantic Airways
28 May - 01 Jun	Virgin Atlantic	direct
31 May - 15 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 411€

Return flights