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

Return flights

28 Apr - 05 May	Air Canada
01 Apr - 08 Apr	Air Canada
24 Apr - 06 May	Scandinavian Airlines
01 Apr - 10 Apr	United
17 Apr - 09 May	Scandinavian Airlines
23 Apr - 07 May	Turkish Airlines
24 Apr - 08 May	United
29 Apr - 10 May	United
20 Apr - 16 May	United
07 Apr - 12 Apr	Delta
09 Apr - 15 Apr	Delta
01 Apr - 25 Apr	KLM
30 Apr - 23 May	Turkish Airlines
29 Apr - 10 May	TAP	direct
03 Apr - 25 Apr	Air France
03 Apr - 12 Apr	Delta
01 Apr - 08 Apr	TAP	direct
01 Apr - 10 Apr	TAP	direct
05 Apr - 12 Apr	TAP	direct
30 Apr - 07 May	TAP

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 456€

Return flights