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

Return flights

26 Nov - 07 Dec	Icelandair
12 Nov - 18 Nov	Spirit Airlines
26 Nov - 07 Dec	TAP	direct
26 Nov - 05 Dec	TAP	direct
30 Nov - 10 Dec	TAP	direct
26 Nov - 30 Nov	Icelandair
27 Nov - 07 Dec	Scandinavian Airlines
07 Nov - 16 Nov	TAP	direct
20 Nov - 27 Nov	Air Canada
15 Nov - 23 Nov	United
26 Nov - 30 Nov	TAP	direct
22 Nov - 29 Nov	Air Canada
21 Nov - 28 Nov	Aer Lingus
21 Nov - 27 Nov	SWISS
25 Nov - 30 Nov	SWISS

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

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 November from 401€

Return flights