Well that clarifies "flights" and other issues.

And changes things quite a bit.

Sill not clear on whether overland sectors count as a continental "flight" or not.

I'd obviously have to change things quite a bit.

How about

SFO
xMIA (1)
UIO (2)
EXE (3/1)
GRU (4/2)
surface to
GIG (5/3?)
BCN (6)
TLV (7/1)
surface
BCN (8/2?)
xLHR (9/3)
BUD (10/4)
BKK (11/1)
HGK(11/2)
DEL (12/3)
xSIN (13/4)
PER (14/1)
SYD (15/2)
AKL (16/3)
xLAX (17)
SFO (18)