Cheapest return flights from Chicago to Lisbon in August from $560

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 August 2025 (see full year).

Return flights

16 Aug - 28 Sep Turkish Airlines
18 Aug - 28 Sep Turkish Airlines
19 Aug - 28 Sep Turkish Airlines
20 Aug - 28 Sep Turkish Airlines
21 Aug - 28 Sep Turkish Airlines
13 Aug - 24 Aug Icelandair
02 Aug - 24 Aug Icelandair
23 Aug - 31 Aug Icelandair
17 Aug - 28 Sep Turkish Airlines
04 Aug - 19 Aug United
12 Aug - 19 Aug United
03 Aug - 18 Aug British Airways
02 Aug - 23 Aug Air Canada
02 Aug - 12 Aug Air Canada
14 Aug - 20 Aug Finnair
15 Aug - 21 Aug Finnair
17 Aug - 28 Sep TAP direct
18 Aug - 28 Sep TAP direct
16 Aug - 28 Sep TAP direct
21 Aug - 28 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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