Cheapest return flights from Chicago to Lisbon in October from $489

Best time to book flights for Chicago (ORD) to Lisbon (LIS) flights at AirHint

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

Return flights

27 Oct - 03 Nov Finnair
24 Oct - 05 Nov Finnair
21 Oct - 28 Oct Finnair
22 Oct - 29 Oct British Airways
14 Oct - 21 Oct British Airways
22 Oct - 29 Oct TAP direct
10 Oct - 17 Oct Finnair
31 Oct - 07 Nov TAP direct
24 Oct - 05 Nov TAP direct
02 Oct - 10 Oct Turkish Airlines
11 Oct - 15 Oct Turkish Airlines
14 Oct - 18 Oct Turkish Airlines
02 Oct - 10 Oct TAP direct
11 Oct - 18 Oct TAP direct

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

Skyscanner

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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