Cheapest one-way flights from Chicago to Lisbon in April from $327

AirHint found the following cheapest one-way flights from Chicago (MDW) to Lisbon (LIS) in April 2026 (see full year).

One-Way flights

25 Apr Frontier Airlines
08 Apr Frontier Airlines
26 Apr Frontier Airlines
01 Apr Porter Airlines (Canada) Ltd
07 Apr Delta
12 Apr Delta
03 Apr Porter Airlines (Canada) Ltd
10 Apr Delta
11 Apr Delta
09 Apr Delta

Also check the deals for return flights from Chicago to Lisbon in April.

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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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