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

Return flights

29 Jul - 19 Aug	Finnair
29 Jul - 05 Aug	Air Canada
20 Jul - 30 Jul	Air Canada
28 Jul - 04 Aug	Iberia
30 Jul - 06 Aug	Air Canada
14 Jul - 21 Jul	Air Canada
16 Jul - 23 Jul	Air Canada
23 Jul - 30 Jul	Air Canada
15 Jul - 22 Jul	Finnair
01 Jul - 08 Jul	Air Canada
01 Jul - 09 Jul	Air Canada
19 Jul - 26 Jul	Finnair
27 Jul - 03 Aug	Finnair
13 Jul - 20 Jul	Air Canada
03 Jul - 21 Jul	British Airways
31 Jul - 07 Aug	Air Canada
29 Jul - 05 Aug	TAP	direct
30 Jul - 06 Aug	TAP	direct
31 Jul - 07 Aug	TAP	direct
25 Jul - 01 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 $595

Return flights