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Results refresh when you open or revisit this page. Last snapshot: May 21, 2026.

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

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Dates, airline, and price
Dates	Airline	Price
23 Sep	Air France
11 Sep	Icelandair
28 Sep	British Airways Direct Flight
13 Sep	British Airways Direct Flight
23 Sep	British Airways Direct Flight
12 Sep	British Airways Direct Flight

deals for return flights from Portland to London in September.

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Updated May 21, 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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Cheapest one-way flights from Portland (PDX) to London (LHR), September

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