Cheapest return flights from Chicago to Lisbon in May from 510€

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

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

Return flights

21 May - 29 May Icelandair
07 May - 22 May Icelandair
04 May - 14 May Finnair
13 May - 20 May Iberia
04 May - 14 May TAP direct
14 May - 21 May Air Canada
12 May - 19 May Air Canada
10 May - 16 May TAP direct
12 May - 23 May British Airways
04 May - 12 May KLM
27 May - 11 Jun Air Canada
28 May - 12 Jun Air Canada
28 May - 18 Jun Air Canada
27 May - 05 Jun Aer Lingus
25 May - 01 Jun Air Canada
02 May - 10 Jun Icelandair
28 May - 15 Jun Finnair
29 May - 05 Jun United
28 May - 12 Jun TAP direct
31 May - 15 Jun Air Canada

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

Skyscanner

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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