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

Return flights

06 May - 10 May	Icelandair
12 May - 22 May	Air Europa
10 May - 20 May	Air Europa
05 May - 30 May	Air Europa
08 May - 18 May	Iberia For Level
10 May - 20 May	TAP	direct
12 May - 22 May	TAP	direct
24 May - 31 May	Air Europa
23 May - 30 May	Air Europa
24 May - 30 May	Air Europa
15 May - 01 Jun	British Airways
27 May - 02 Jun	Iberia
27 May - 01 Jun	Iberia
16 May - 06 Jun	British Airways
28 May - 11 Jun	Iberia
23 May - 08 Jun	Iberia
26 May - 10 Jun	Iberia For Level
25 May - 10 Jun	Iberia For Level
23 May - 13 Jun	Iberia
15 May - 01 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 $378

Return flights