Originally Posted by
gfunkdave
If you're visiting NYC proper, I'd suggest flying into JFK instead of EWR...getting from EWR to the city on public transportation takes some planning, while you can just take the airtrain/subway in from JFK.
In both cases you take the AirTrain to the railroad. Depending on where you're going in Manhattan there might be another transfer, but it really is not much harder. And from the airport to NYPenn is roughly the same amount of time, though the trains are more frequent from JFK. Not enough to skew things though.
Originally Posted by
B747forever
My number one choice would be BA, not only is it the cheapest, you get to fly more, and on different airplanes. Furthermore BA's service is a bit better than CO/SK and as BA uses T5 at LHR, the connection will be seamless.
A 'seamless' transfer at T5 (and that is most definitely not a guarantee) is still more painful than a non-stop flight. Getting to fly an extra plane also means having the extra opportunity for things to go wrong.