Cheapest one-way ORD–LIS flights, October

AirHint found the following cheapest one-way flights from Chicago (ORD) to Lisbon (LIS) in October 2026 (see full year).

One-Way flights

21 Oct American Airlines
03 Oct Spirit Airlines
02 Oct Icelandair
12 Oct Aer Lingus
23 Oct American Airlines
22 Oct Iberia
11 Oct American Airlines
01 Oct Icelandair
09 Oct American Airlines
11 Oct TAP direct

Also check the deals for return flights from Chicago to Lisbon in October.

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