Cheapest one-way flights from Chicago to Lisbon in May from 259€

Best time to book flights for Chicago (ORD) to Lisbon (LIS) flights at AirHint

AirHint found the following cheapest one-way flights from Chicago (ORD) to Lisbon (LIS) in May 2025 (see full year).

One-Way flights

13 May Spirit Airlines
14 May Spirit Airlines
04 May Icelandair
05 May Spirit Airlines
15 May Spirit Airlines
16 May Spirit Airlines
19 May Spirit Airlines
18 May Spirit Airlines
28 May Icelandair
29 May Icelandair

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

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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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