Cheapest one-way flights from Chicago to Lisbon in August from $321

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

One-Way flights

23 Aug Aer Lingus
17 Aug Aer Lingus
15 Aug Lufthansa
07 Aug WestJet
11 Aug WestJet
14 Aug WestJet
23 Aug TAP direct
07 Aug TAP direct
14 Aug TAP direct
15 Aug TAP direct

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

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