The average cost for a domestic flight out of Indianapolis International Airport exceeds the national average by about the average cost of fast food fries.
That's just $4 more than the average for all U.S. airports.
Zoom in: Washington Dulles International ($473), John Wayne Airport in Los Angeles ($428) and San Francisco International ($425) are the most expensive U.S. airports for domestic travel.
Fort Lauderdale is the cheapest, with average airfare of only $252.
Caveat: This is a snapshot in time, and airfare for some destinations can rise and fall over the year. Plus, lots of factors affect airports' average fares.
If an airport has more work travelers buying business- or first-class tickets, for example, that could drive up the average fare.
Conversely, a heavy presence of budget airlines could reduce the average fare.