Doing a modern airfare search on Hipmunk.com (because it's their first birthday, yay!), we found the same roundtrips between LA and NYC for $278 on AirTran, or $319 if you're deadset on flying American Airlines. So in the last fifty years, the price of a cross-country flight has only gone up $133-ish. It's nearly doubled, but when you consider the higher incomes and better airplanes and airports, we're really on the winning end of this.
Now you know what we'll be giving thanks for at the dinner table come November Thanksgiving.
For more like this, check out our series on American Airlines in 1959.