> 100 non-stop destinationsAirports with non-stop flights to 100+ destinations
> 30 non-stop destinationsAirports with non-stop flights to 30+ destinations
> 7 non-stop destinationsAirports with non-stop flights to 7 to 30 destinations
< 7 non-stop destinationsAirports with non-stop flights to less then 7 destinations
Blue means many direct routes, while red indicates fewer connections