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

Return flights

02 May - 10 May	KLM
12 May - 17 May	Air Europa
17 May - 22 May	Air Europa
07 May - 11 May	LEVEL
13 May - 19 May	LEVEL
05 May - 25 May	Iberia
15 May - 22 May	British Airways
19 May - 26 May	Brussels Airlines
14 May - 18 May	Air Europa
13 May - 18 May	Aer Lingus
17 May - 09 Jun	LEVEL
27 May - 05 Jun	Iberia
27 May - 04 Jun	British Airways
28 May - 02 Jun	SWISS
24 May - 09 Jun	British Airways
08 May - 12 Jun	Aer Lingus
31 May - 30 Jun	SWISS
26 May - 09 Jun	SWISS
29 May - 15 Jun	SWISS
29 May - 07 Jun	SWISS

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 438€

Return flights