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

Return flights

21 Jul - 28 Jul	Air Canada
22 Jul - 29 Jul	Finnair
16 Jul - 23 Jul	Air Canada
30 Jul - 06 Aug	Air Canada
31 Jul - 07 Aug	Lufthansa
14 Jul - 21 Jul	Air Canada
17 Jul - 24 Jul	SWISS
19 Jul - 26 Jul	Finnair
01 Jul - 08 Jul	Air Canada
15 Jul - 22 Jul	Finnair
02 Jul - 09 Jul	Air Canada
13 Jul - 20 Jul	Finnair
31 Jul - 07 Aug	TAP	direct
30 Jul - 06 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 515€

Return flights