Perhaps this has been recently discussed already, but the only thread I could find dates back 8+ years... I am wondering, which are the southernmost and northernmost international airports with regular, scheduled airline services?
I am thinking of perhaps Ushuaia (USH), at 54°50' to the South, and Keflavik (KEF), at 63°59' North... I know Murmansk or Svalvard lie farther up North, but they do not seem to have regular international flights to/from them.
And the highest? Still Bangda (BPX), Qamdo, Tibet, with 4334 meters - but is it served internationally? Otherwise, could it be La Paz (LPB) with 4061 meters and regular, international scheduled flights?
Any input will be appreciated,