Originally Posted by
reed2x
Delta has about 700 US destinations, given they are all linked through the network that is 700^2=490,000 city pairs, well exceeding 10,000.
I agree with your logic just not the final number. Delta (including outsourced DL connection flying) flies to just 315 cities world wide. It's probably closer to 175 cities in the US. Ether way, it's still way over 10,000 possible city-pairs (or routes)
http://www.delta.com/content/www/en_...ly/routes.html