Cheapest return flights from Portland to London in April from $596

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

Return flights

06 Apr - 02 May Icelandair
07 Apr - 02 May Icelandair
18 Apr - 09 May Icelandair
09 Apr - 02 May Icelandair
11 Apr - 02 May Icelandair
29 Apr - 14 May British Airways
14 Apr - 23 Apr Delta
21 Apr - 30 Apr Delta
07 Apr - 16 Apr Icelandair
05 Apr - 25 Apr British Airways direct
08 Apr - 02 May Air Canada
20 Apr - 27 Apr Icelandair
10 Apr - 02 May KLM
08 Apr - 02 May British Airways direct
10 Apr - 02 May British Airways direct

Also check the deals for one-way flights from Portland to London in April.

Powered by

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.

Book a cheap hotel in London

Cheap car rent in London

Feel free to contact us with any feedback or request another flight research.