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

One-Way flights

04 Oct	Spirit Airlines
02 Oct	Frontier Airlines
10 Oct	KLM
16 Oct	Frontier Airlines
25 Oct	Frontier Airlines
11 Oct	Lufthansa
05 Oct	Porter Airlines (Canada) Ltd
18 Oct	Air Canada
21 Oct	United
20 Oct	United

Also check the deals for return 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.

Book a cheap hotel in Lisbon

Cheap car rent in Lisbon

Cheapest one-way flights from New York to Lisbon in October from 225€

One-Way flights