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

Return flights

11 May - 19 May	TAP	direct
04 May - 11 May	TAP	direct
12 May - 19 May	TAP	direct
08 May - 15 May	Iberia
15 May - 22 May	Iberia
15 May - 23 May	Aer Lingus
03 May - 23 May	Aer Lingus
05 May - 30 May	Iberia
07 May - 30 May	Iberia
01 May - 23 May	Iberia
16 May - 06 Jun	Air Canada
26 May - 02 Jun	Air Canada
18 May - 13 Jun	SWISS
26 May - 20 Jun	Air Canada
21 May - 01 Jun	SWISS
15 May - 06 Jun	SWISS
30 May - 07 Jun	Iberia
20 May - 13 Jun	British Airways
21 May - 13 Jun	SWISS
26 May - 02 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 $386

Return flights