AirHint found the following cheapest return flights from Charlotte (CLT) to Lisbon (LIS) in May 2026 (see full year).

Return flights

05 May - 12 May	Finnair
04 May - 12 May	Finnair
05 May - 13 May	Finnair
04 May - 14 May	British Airways
11 May - 19 May	Finnair
11 May - 22 May	Finnair
08 May - 15 May	Finnair
12 May - 20 May	Iberia
01 May - 09 May	Lufthansa
02 May - 09 May	British Airways
28 May - 02 Jun	Spirit Airlines
28 May - 01 Jun	Spirit Airlines
25 May - 02 Jun	Spirit Airlines
26 May - 03 Jun	Lufthansa
31 May - 08 Jun	British Airways
24 May - 01 Jun	Lufthansa
30 May - 07 Jun	Lufthansa
29 May - 05 Jun	Finnair
27 May - 04 Jun	Air Canada
28 May - 04 Jun	Iberia

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

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 Charlotte to Lisbon in May from $468

Return flights