Code:
AMS (Amsterdam): IIIIIIIIII
JFK (New York): IIIII
MEX (Mexico City): IIIII
LAX (Los Angeles): IIII
CDG (Paris): III
CUN (Cancun): II
PTY (Panama City): II
GIG (Rio de Janeiro): II
GRU (Sao Paulo): II
SAW (Istanbul): II
IST (Istanbul): II
ATL (Atlanta): I
EWR (New York): I
TRN (Turin): I
MXP (Milan): I
MAD (Madrid): I
CGH (Sao Paulo): I
SDU (Rio de Janeiro): I
BEG (Belgrade): I
DXB (Dubai): I
DCA (Washington DC): I
LGA (New York): I
CUR (Curacao): I
YVR (Vancouver): I
KEF (Reykjavik): I
TBS (Tbilisi): I
ARN (Stockholm): I
