Cheapest return flights from Chicago to Lisbon in August from 424€

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

Return flights

15 Aug - 23 Aug TAP direct
11 Aug - 22 Aug TAP direct
15 Aug - 22 Aug TAP direct
18 Aug - 25 Aug TAP direct
10 Aug - 21 Aug TAP direct
14 Aug - 21 Aug TAP direct
14 Aug - 25 Aug TAP direct
15 Aug - 25 Aug TAP direct
16 Aug - 23 Aug TAP direct
19 Aug - 17 Sep United
13 Aug - 20 Aug SWISS
29 Aug - 06 Sep Aer Lingus
28 Aug - 01 Sep Icelandair
28 Aug - 04 Sep TAP direct
29 Aug - 06 Sep TAP direct
31 Aug - 07 Sep TAP direct
28 Aug - 01 Sep TAP direct

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

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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