Cheapest return flights from Chicago to Lisbon in July from $639

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 July 2025 (see full year).

Return flights

28 Jul - 06 Aug Aer Lingus
28 Jul - 07 Aug Aer Lingus
15 Jul - 22 Jul Aer Lingus
22 Jul - 29 Jul Aer Lingus
09 Jul - 16 Jul British Airways
16 Jul - 23 Jul British Airways
29 Jul - 05 Aug British Airways
30 Jul - 06 Aug British Airways
08 Jul - 15 Jul Iberia
30 Jul - 05 Aug British Airways
02 Jul - 09 Jul Finnair
23 Jul - 30 Jul British Airways
08 Jul - 21 Jul British Airways
21 Jul - 04 Aug British Airways
22 Jul - 05 Aug British Airways
17 Jul - 24 Jul Finnair
31 Jul - 07 Aug Finnair
30 Jul - 04 Aug British Airways
24 Jul - 31 Jul British Airways
27 Jul - 03 Aug Aer Lingus

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

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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