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

Return flights

11 Oct - 19 Oct	Icelandair
11 Oct - 16 Oct	Icelandair
12 Oct - 16 Oct	Air Europa
16 Oct - 25 Nov	Air Europa
01 Oct - 05 Oct	Icelandair
01 Oct - 09 Oct	Icelandair
21 Oct - 03 Nov	Air Canada
29 Oct - 05 Nov	Air Europa
15 Oct - 20 Oct	Aer Lingus
14 Oct - 22 Oct	SWISS
08 Oct - 19 Oct	Icelandair
21 Oct - 02 Nov	Air Canada
15 Oct - 23 Oct	SWISS
05 Oct - 07 Oct	Air Europa
30 Oct - 18 Nov	Iberia For Level
23 Oct - 15 Nov	Air Canada
27 Oct - 05 Nov	Lufthansa
27 Oct - 02 Nov	Air Canada
27 Oct - 05 Nov	Air France	direct
13 Oct - 08 Nov	Aer Lingus

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 $373

Return flights