$16,619.85

Wolfgang Schwanke writes:

It's undisputed that flying is considerably cheaper in the US.

The debate is whether flying in Europe is so astronomically expensive
that it's out of reach for normal people, and specifically if the
prices that "Dallas" found are typical.

That requires that you define "out of reach" and "normal people."

For most people in both Europe and the U.S., flying is either absolutely out
of reach (meaning that they cannot possibly afford it, no matter what
sacrifices are made), or practically out of reach (meaning that the sacrifices
required to scrape up the money are so great that they eclipse any desire to
fly).

A lot has changed since those halcyon days of the 1970s (which, incidentally,
also were very near the peak of buying power for Americans).