AirHint found the following cheapest return flights from New York (NYC) to Lisbon (LIS) in October 2025 (see full year).

Return flights

15 Oct - 19 Oct	Icelandair
04 Oct - 12 Oct	Icelandair
23 Oct - 28 Oct	Iberia For Level
29 Oct - 11 Nov	Norse Atlantic Airways
05 Oct - 13 Oct	Air Canada
21 Oct - 27 Oct	Iberia For Level
07 Oct - 14 Oct	Aer Lingus
13 Oct - 19 Oct	Air Canada
08 Oct - 14 Oct	Iberia For Level
08 Oct - 13 Oct	Lufthansa
30 Oct - 10 Nov	Norse Atlantic Airways
30 Oct - 11 Nov	Iberia
09 Oct - 14 Oct	Air Canada
18 Oct - 03 Nov	Iberia
29 Oct - 02 Nov	Icelandair
28 Oct - 01 Nov	Iberia
30 Oct - 11 Nov	TAP	direct
30 Oct - 10 Nov	TAP	direct
29 Oct - 02 Nov	TAP	direct
18 Oct - 03 Nov	TAP	direct

Also check the deals for one-way flights from New York to Lisbon in October.

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 October from $372

Return flights