This thread is what I love about FT. Never knew the 1776 PHL flight which is great.

I grew up on UA 1/2 ORD <> HNL and remember being genuinely if not unjustifiably sad when those were changed post-merger.

As noted up thread the LAX <> LHR routes were 10x a year for me when I lived in LA and it was helpful that the flight #s never changed even just for filling out customs form purposes.