Cheapest return flights from Chicago to Lisbon in October from $441

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

Return flights

29 Oct - 02 Nov Icelandair
07 Oct - 16 Oct Air Canada
20 Oct - 07 Nov Air Canada
28 Oct - 11 Nov Air Canada
16 Oct - 23 Oct TAP direct
16 Oct - 24 Oct TAP direct
09 Oct - 15 Oct TAP direct
22 Oct - 09 Nov TAP direct
08 Oct - 16 Oct Air Canada
15 Oct - 22 Oct Lufthansa
17 Oct - 24 Oct TAP direct
09 Oct - 14 Oct Air Canada
07 Oct - 14 Oct jetBlue
29 Oct - 02 Nov TAP direct
09 Oct - 17 Oct Air Canada
30 Oct - 06 Nov United

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

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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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