When I first started travelling I remember that many international airports had large “Welcome to [insert country here]”. Over the past few years they seem to have dissappeared and been replaced with signs about security checks. There are no welcome signs at Heathrow (Gatwick as well buts I have rarely been there, did’nt see one in Dubai or Athens or Istanbul or Paris or Singapore.
Whats up, people have become less welcoming.
At San Francisco International (SFO) you’re welcomed at baggage claim with a sign saying “Mayor Gavin Newsom welcomes you to San Francisco” or something like that. It should have his picture too so you will REALLY feel cheered up after a long trip, if you catch my drift. (He’s easy on the eyes.)
Like you said though there are about 50 other signs about bathrooms and taxis and hotel shuttles, etc. so it tends to get lost in the shuffle.
Someone in Milwaukee painted “Welcome to Cleveland” on his roof big enough to confuse airplane passengers, but I don’t think that’s what your looking for.
I remember them being rather prominent and a staple of most airports. They seem to have gone.
There are signs along the roads leading away from Lambert Airport in St. Louis that say “Welcome to Missouri” in about a half-dozen different languages.
I think Northwest has signs in all their jetbridges at airports. I saw “Welcome to Kansas City,” “Welcome to Minneapolis” and “Welcome to LaCrosse” on my last trip. (Welcome to the wrong city and 24 hours late, but that’s another post…)
We were in a small airport in the Bahamas and it was so small we wanted to take a picture of it. (It was small enough to fit in frame). Anyway this really upset the local TSA. Maybe it’s possible they’ve removed these signs to discourage people from taking pictures in the airports. This apparently poses some security threat.
I think Westlife welcome you to Dublin Airport. 
At least a couple of airports I can think of (Chicago O’Hare and Detroit) have signs that are prominently visible when you’re driving out of the airport.
OTOH I have been at quite a few airports that DO still post the “welcome to” signs inside the facility. You may be flying to many airports where redesigns to the terminal layout have made them impractical – or limited the available signage space so that it’s more efficiently used for informational signage (e.g. security notices and directions to baggage claim)
I remember L.A. having such a sign at their international terminal in July. I was before customs I think. It was Welcome to the United States and was over a doorway. What I really remember was it was flanked by what looked like badly copied pictures of President Bush and Vice-President Cheney in really cheap black plastic frames. It managed to be creepy and tacky at the same time.
I think there is a welcome sign in Atlanta airport, but only at the escalator you go up if Atlanta is your final destination.
Which makes sense - I think being welcomed to Atlanta would be silly if you were just catching another flight somewhere else.
Also, maybe it is a good idea only to welcome people to the United States once they’ve made it through customs and immigration!
I don’t think they want to make you feel too welcome these days, in case you stay.
At Cape Town International there’s a “Welcome to the Western Cape” sign (the Western Cape being the province that Cape Town is in) at the beginning of the highway leading out of the airport. IIRC there’s a “Welcome to South Africa” sign in the vicinity of passport control, but it’s a while since I’ve been through there.
In the US, the trend seems to be to move the signs out of the airport and put big ones (with flowers, natch) at the exit of the parking lots.
Presumably at the airports in Signs, wherever that is.
SFO has one, as well.
Good point - why are you assuming you’re so welcome? 
Troy, quit picking on my boyfriend…and his hair! 
At Charlotte’s airport, there are half a dozen “welcome” signs in various languages along the road away from the airport.
Personally, I always thought they should put up a mirror set along the other side of the road saying “fine, be that way” in various languages.