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

Return flights

15 Oct - 22 Oct	Air Canada
13 Oct - 23 Oct	Delta
12 Oct - 24 Oct	KLM
07 Oct - 20 Oct	KLM
09 Oct - 13 Oct	Delta
16 Oct - 20 Oct	Delta
16 Oct - 26 Oct	Delta
14 Oct - 22 Oct	Air Canada
31 Oct - 09 Nov	Delta
17 Oct - 20 Oct	Delta
24 Oct - 31 Oct	Lufthansa
29 Oct - 03 Nov	Delta
28 Oct - 03 Nov	Delta

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 398€

Return flights