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

Return flights

04 Apr - 19 Apr	Icelandair
19 Apr - 30 Apr	Air Canada
18 Apr - 29 Apr	Air Canada
22 Apr - 29 Apr	TAP	direct
01 Apr - 08 Apr	TAP	direct
04 Apr - 19 Apr	TAP	direct
18 Apr - 29 Apr	TAP	direct
12 Apr - 19 Apr	TAP	direct
21 Apr - 28 Apr	United
11 Apr - 18 Apr	TAP	direct
25 Apr - 10 May	SWISS
25 Apr - 10 May	TAP	direct

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

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 April from 495€

Return flights