AirHint found the following cheapest return flights from Portland (PDX) to Lisbon (LIS) in June 2026 (see full year).

Return flights

02 Jun - 10 Jun	Air Canada
03 Jun - 10 Jun	Air Canada
02 Jun - 09 Jun	Alaska Airlines
08 Jun - 16 Jun	Air Canada
17 Jun - 25 Jun	Icelandair
30 Jun - 07 Jul	Air Canada
30 Jun - 08 Jul	Air Canada
29 Jun - 07 Jul	Air Canada
09 Jun - 17 Jun	Air Canada
04 Jun - 11 Jun	Icelandair
01 Jun - 09 Jun	Air Canada
09 Jun - 16 Jun	Air Canada
10 Jun - 17 Jun	Air Canada
29 Jun - 06 Jul	Finnair
23 Jun - 01 Jul	British Airways
24 Jun - 02 Jul	Air Canada
28 Jun - 06 Jul	Air Canada
25 Jun - 03 Jul	Air Canada
27 Jun - 05 Jul	Air Canada
26 Jun - 04 Jul	Air Canada

Also check the deals for one-way flights from Portland to Lisbon in June.

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 Portland to Lisbon in June from 773€

Return flights