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

Return flights

11 Jun - 26 Jun	Icelandair
24 Jun - 01 Jul	Icelandair
19 Jun - 26 Jun	Icelandair
11 Jun - 26 Jun	British Airways	direct
28 Jun - 03 Jul	Icelandair
04 Jun - 11 Jun	Icelandair
09 Jun - 16 Jun	Icelandair
16 Jun - 26 Jun	Delta
14 Jun - 21 Jun	Icelandair
30 Jun - 06 Jul	Icelandair
11 Jun - 09 Jul	Delta
21 Jun - 11 Jul	Delta
30 Jun - 05 Jul	Icelandair
21 Jun - 11 Jul	British Airways	direct
12 Jun - 27 Jun	Delta
12 Jun - 29 Jun	Delta
30 Jun - 05 Jul	British Airways	direct
30 Jun - 06 Jul	British Airways	direct
28 Jun - 04 Jul	Finnair

Also check the deals for one-way flights from Portland to London 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 London in June from 803€

Return flights