Cheapest return flights from Chicago to Lisbon in May from $498

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

04 May - 10 May TAP direct
07 May - 21 May TAP direct
07 May - 23 May TAP direct
04 May - 12 May Turkish Airlines
05 May - 13 May Turkish Airlines
07 May - 22 May Finnair
06 May - 13 May Finnair
03 May - 16 May TAP direct
03 May - 11 May TAP direct
05 May - 12 May Turkish Airlines
21 May - 01 Jun Icelandair
28 May - 11 Jun British Airways
28 May - 18 Jun Iberia
16 May - 11 Jun Lufthansa
18 May - 01 Jun Lufthansa
28 May - 06 Jun Finnair
21 May - 04 Jun Aer Lingus
29 May - 05 Jun Icelandair
27 May - 01 Jun Finnair
28 May - 07 Jun Finnair

Also check the deals for one-way 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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