I've been to
LHR a couple of times and, like most, I have pretty mixed feelings about it. It is just a great airport as a spotter, but for a passenger, I can come pretty close to a nightmare.
Flying into or out of
LHR is alright when you use
T4, same goes for connections, but everything else is something I try to avoid. T1-3 seem like an utter mess connecting between them isn't very nice either, and connecting from T1-3 to
T4 or vv gives you a bit of a headache. 60 minutes connection time is hardly doable under normal conditions.
But on the other hand I must say, many European and U.S. airports I have been to can easily join the club.
LAX and
JFK have been mentioned a couple of times,
LGW can get pretty nasty too, not to mention the old
DTW. I really didn't like to fly
IB via
MAD, because I really felt unsafe in the airport (I don't want to talk about the flights really), long overcrowded tunnels, no fire surpression system, no emergency exists, imho the airport is a deathtrap. Let's hope it doesn't end up like
DUS did. Another airport which joins this list is
LIN, connections were hardly doable, especially the connection tunnel, gateway or whatever it was was closed every time I was there, so I had to go through the arrivals hall and back to departures. Very comfy.
MXP isn't much better.
All this is only surpassed by
CDG. No matter what I do fly, or where I do fly, I shall only use
CDG if I must (read: someone holds me at gunpoint to do so). The architecture is actually pretty interesting, but that's it. The gates seem to be just randomly placed around, connections from T1 to
T2 don't deserve that name, the constant lack of english language doesn't help much either. It's a no-go for me.
On the other hand, there are positive things. I liked
ZRH during Swissair times. It was a decent airport with good connection possibilities, I was VERY positivly surprised by both
ATL and
ORD, they are good facilities where I never encountered problem despite their sheer size, also
MSP was definately thumbs up.
A decent airport to be, for me, is
FRA. Not really pretty, but serves its purpose really well, I am somewhat looking forward to
T3 in 2015. I also like
MUC because of it's simplicity, although I have never connected through it (might be because it's my home airport), but from most people, I heard mostly good things. And another two thumbs up from me gets
AMS.
LHR just needs to tear down T1-3 and build one new, modern terminal.
SailorOrion