AirHint found the following cheapest return flights from Chicago (ORD) to Lisbon (LIS) in July 2026 (see full year).

Return flights

01 Jul - 08 Jul	Finnair
14 Jul - 21 Jul	Iberia
22 Jul - 29 Jul	Aer Lingus
26 Jul - 06 Aug	Aer Lingus
01 Jul - 05 Jul	Finnair
18 Jul - 25 Jul	Lufthansa
04 Jul - 26 Jul	Aer Lingus
22 Jul - 29 Jul	TAP	direct
18 Jul - 25 Jul	TAP	direct
10 Jul - 02 Aug	WestJet
04 Jul - 26 Jul	TAP	direct
01 Jul - 09 Jul	Delta
23 Jul - 01 Aug	Turkish Airlines
10 Jul - 02 Aug	TAP	direct

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

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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Cheapest return flights from Chicago to Lisbon in July from 613€

Return flights