What is the flight path from Los Angeles to Frankfurt?

The exact routing between these two locations will vary based on factors such as wind direction or the jet stream.

A very good example of a flight path between Frankfurt and Los Angeles would be to fly northwest out of Frankfurt towards Cologne and the Northern Netherlands, then the flight would cross the North Sea and head towards the UK (Newcastle-upon-Tyne) and alongside the border with Scotland before leaving UK airspace. Then the flight would head northwest towards Iceland and just passing over the tip before coming in over Eastern Canada before descending into the United States.

Of course, the exact routing will vary based on the factors above.

Sometimes a flight from Frankfurt to Los Angeles will head westwards towards Belgium and head over the English Channel before crossing the south of the UK (passing over cities such as London and Bristol) and then over Wales and southern Ireland.

Other times a flight from Frankfurt to Los Angeles will shoot up towards the north of Germany towards Denmark and then over the North Sea and then turning northwest (just hugging the Shetland Islands before heading towards Iceland).

Oh sorry, I answered the Frankfurt to Los Angeles flight path instead of the Los Angeles to Frankfurt flight path but I imaging both the flight path going both ways will have a similar routing.