[sardonicbryan]

I'm pretty sure UA has more than 48 flights a week to the NY area as well if you're aggregating JFK, LGA and EWR,the number should be closer to 20 per day. I just arbitrarily picked Friday, 10/17 from SFO => NYC and there are 23 flights. Your number might be right if excluding EWR, which like SFO is a major UA hub.

[nikhizzle]

yeah, EWR comes under Newark. Though I should consider merging metropolitan areas beyond cities.

http://flightsphere.com/flight-time/from/newark/to/san-franc...

[sardonicbryan]

Most cities actually have an airport code as well, ie CHI for Chicago and NYC for New York. It might be worthwhile to piggyback off of that for consistencies sake.