Registered: 21/05/1999
Posts: 5335
Loc: Cambridge UK
I use United because they're the cheapest airline with good US connections that isn't utterly crap. The fare is often half that of BA or Virgin. Upgrades and miles are a bonus.
So who does fly direct to Logan from Heathrow? They would also need Logan - LA and LA - Heathrow routes for it to make sense to switch airline.