What's the least difference in latitude on a flight between a pair of IATA airports?
I flew from CBR - Canberra [35.2809° S, 149.1300° E] to ADL - Adelaide [34.9285° S, 138.6007° E] on Tuesday and noticed on the inflight map that it was very close to being perfectly west. As you can see from the lat/long pairs, it's not far off.
I was wondering if there were other airports closer to 'straight' east-west that actually have flights between them?
To clarify, the difference between Canberra and Adelaide is 0.3524 deg latitude. The 'straightest east-west (or west-east) would have the smallest difference in degrees latitude.
To avoid same-city airports or terminals, the pair should be at least 50km apart.
Partner question: What's the straightest north-south flight?
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