Air distance: ~5,680 km (3,529 mi) great-circle.
Flight time: 7–8 hrs nonstop (YYZ→LHR/LGW).
Geographic midpoint (on land): Southern Greenland (~64.7°N, 30.7°W), ~1,600 km from Toronto, ~4,080 km from London. No settlements; nearest town: Paamiut (pop. ~1,300) ~200 km away.
Midpoint on a typical flight path: Over the North Atlantic, south of Iceland—no land.