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

Return flights

30 Jun - 08 Jul	SWISS
13 Jun - 22 Jun	Air Canada
06 Jun - 14 Jun	Air Canada
06 Jun - 10 Jun	Air Canada
10 Jun - 04 Jul	Iberia
05 Jun - 10 Jun	Iberia
06 Jun - 27 Jun	Air Canada
04 Jun - 21 Jun	Air Canada
03 Jun - 21 Jun	Air Canada
05 Jun - 27 Jun	Iberia
05 Jun - 21 Jun	Air Canada
04 Jun - 21 Jun	TAP	direct

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

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 June from $689

Return flights