Well for Enplanements for October of 2009

1) SWA 8.8M
2) AMR 7.1M
3) Delta 5.7M
4) UAL 4.7M
5) USAir 4.2M
6) CAL 3.5M
7) NWA 3.1M
8) AirTran 1.995M
9) Skywest 1.9M
10) Jetblue 1.7M

Add NWA and Delta and you have 8.9M, so we're bigger than SWA right?

International AMR had, in those numbers above, 1.543M travel international and we had 951K followed by CAL at 864K and UAL 859K. NWA comes in at 604K so add NWA and DAL and you get 1.555M, yeah we win.

International airports in terms of volume from, not just Oct 09, but Jan 09-Oct 09 is MIA (4.1M), JFK (3.6M), ATL (3.3M), EWR (3.3M), IAH (2.6M), ORD (2.5M), DFW (1.6M), PHL (1.4M), IAD (1.3M) and SFO (1.3M).

I'm still trying to figure out which airline is #1 in airports served... or did I miss the answer?