This included 14 hour flights to and from Japan where we lived 1988-2002. When it got boring they slept or Dad and Mom would walk the aisles with them until they got tired enough to sleep or go back to their sticker books or coloring books or baby dolls or (in my youngest daughter's case) hand tools.
Saying that necessary travel with your children wasn’t really any more awful than necessary travel without your children is not at all the same as, “Traveling with kids can be fun ...”.