Cheapest one-way flights from Portland (PDX) to London (LHR), September

Select a price to book. see full year.

Dates, airline, and price
Dates Airline Price
21 Sep Alaska Airlines
23 Sep Alaska Airlines
09 Sep Alaska Airlines
28 Sep Alaska Airlines
13 Sep Alaska Airlines
12 Sep Scandinavian Airlines
20 Sep Iberia
25 Sep Alaska Airlines
04 Sep Air France
20 Sep Iberia
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deals for return flights from Portland to London in September.

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Updated Sep 3, 2026.

About these fares

These results come from our latest search across airlines for your currency. Prices change quickly and are not locked until you complete booking—always confirm the total and fare rules on the partner site.

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