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

Return flights

01 Oct - 07 Oct	Air Canada
09 Oct - 18 Oct	Air Canada
22 Oct - 26 Oct	Icelandair
11 Oct - 15 Oct	Air Canada
03 Oct - 08 Oct	Air Canada
29 Oct - 02 Nov	Icelandair
30 Oct - 13 Nov	Delta
12 Oct - 20 Oct	TAP
23 Oct - 31 Oct	SWISS
24 Oct - 31 Oct	SWISS
30 Oct - 18 Nov	Virgin Atlantic
16 Oct - 25 Nov	TAP	direct
16 Oct - 30 Oct	United	direct
20 Oct - 30 Oct	United	direct
27 Oct - 10 Nov	TAP
30 Oct - 06 Nov	United	direct
26 Oct - 03 Nov	TAP
29 Oct - 05 Nov	United	direct
30 Oct - 13 Nov	United	direct
30 Oct - 18 Nov	United	direct

Also check the deals for one-way flights from Newark 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 Newark to Lisbon in October from 323€

Return flights