Join Date: Mar 2009
Location: NYC
Programs: AS MVPG, DL KM, Bee Six, Bonvoy Plat, Choice Plat, BW DS, Avis PC, Natl Exec, Greyhound Road Rewards
Posts: 19,972
As of last week, Greyhound is now showing FlixBus routes and fares on their booking engine. If you click on one, it redirects you to the FlixBus site.
Between NYC and Philadelphia, FlixBus is consistently cheaper.
-J.