Generally, I see that airlines with 5th freedom rights do match fares offered by the carries of the two points they serve. I have seen competitive prices on SQ
-NYC, Phillipine's discontinued YVR
flight that forced AC
to slash their fares on those days that PR
flew the route (about 3x per week), Ethiopian's BKK
which is half what others offer to name a few...
And if anyone cares to know, it now costs less to fly from London to New York than to fly Vancouver to Las Vegas (both return)! When will we be libereated?