"See actual flight paths with flightpaths.com"
Weather, politics and local regulations can affect the choice of airspace and flight corridors. Flightpaths.com lets you see the real flight paths and compare passenger airlines and flight times simplified on an interactive map.
Flights from Portland (PDX), USA to London (LHR), United Kingdom illustrated on a map. Based on 11 recorded flights, the distance can vary between 5041 and 5609 miles.
Canada
Ireland
Greenland
United Kingdom
Over water
Canada
United Kingdom
Over water
Ireland
Greenland
You can also check the reverse route: London to Portland