I’ll share mine after I see everyones choices 
I've been to many , Karachi , UAE are the best
Hmmm Manchester and Uk based are just ok , Toronto was bad due to the stupid traffic system and the complicated over head bridge around the enterence
Lahore old one was a bad one . But I heard the new one is a kool one
Best: Shipol, Amsterdam. (They have loads of shops)
Worst: Isb.
Boston's Logan is all Security check....Stupid airport is all Jewish controlled & they would try to sniff you ....even if you are 1% muslim,...
Yeah baby! I agree 
Sahar Airport Mumbai - worst - well its the crowd part which irritates me..ek aadmi ko chodne hazaar log aate hain...
Dubai International Airport - Thats impressive
lahore airport - worst by far
I could mention airports in some third world african countries that ive been to, but i dont think it would be fair to nominate them, since all they have is a small airstrip and a lounge the size of my room.
Good ones:
Changi - Singapore
Frankfurt
Bad ones:
Chennai (Madras)
Columbo
Bahrain Airport is very boring.
I like Heathrow and Karachi's airport. Will check out Queen Alia (Jordan) and Jeddah's airport soon enough.
The best airport is Honolulu's International Airport. It is just like any other major city airport BUT OPEN AIR. You can feel the ocean breeze as soon as you come off the gateway into the boarding lounge. The breeze hits you right in the face and it feels so welcoming coming off a 10 hr flight.
You can also buy lei's (those fresh flower garlands) right at the airport... it's just very refreshing.
The worst has got to be London's Heathrow... piece of shiit seats and too many people in transit. It seems like it's nobody's final destination...everybody just wants to get the hell out of Heathrow.
I hate Toronto Airport... too clumsy and round-about ways to get to where you want to go. I try to avoid it at all costs... I'd rather drive to Buffalo and catch my flight from there.
Heathrow follows a close second.
Best one I've been to - Dubai, and Riyadh.
Not bad: Montreal, Orlando, Rome.
Too simple / no one wants to fly in/out of here: St. Johns, New Brunswick.
You can't really compare most of the Asian airports to the western ones. I mean, comparing Dubai airport to Heathrow or Dulles is ok but to compare Islamabad to them is not fair.
In USA, I was disappointed with LGA.
[QUOTE]
*Originally posted by Umar Talib: *
I hate Toronto Airport... too clumsy and round-about ways to get to where you want to go.
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I don't particularly like it myself, but the revamped terminal (1) is really nice. Been there recently? It almost reminds me of Frankfurt Main.
I absolutely loved Schiphol, Amsterdam. Shinz ;-) The one in Frankfurt is also really nice.
And I don't like Heathrow.
my 5 favorite airports in the world
karachi airport & islamabad airports
dubai - i jus love this airport. such a lush place and has a luxurious and hospitable feel. and its a Muslim airport. their restrooms r the best in the whole world. and they prayer rooms. and i love seeing those young guys dressed in those arab robes and those indoor palm trees. and their duty free shops r DA BEST! and u see crowds of pakistani laborers dressed in shalwaar kameez. this is my favorite airport outside pakistan.
heathrow - i love the desi ambience there, they even have urdu announcements on the PA system! u see so many desis, all those pakis and darjis around..feels totally at home el o el. and the cleaning ladies r all punjabans. luv it.
sanfrancisco - this is the airport i used to land in when i used to go to amreeka for college. my first time in amreeka i landed in SFO airport. a lot of personal memories attached to sfo airport.
awww, I like Heathrow. I guess I'm the only one!
That’s because u had good company 
i love it too chick..im sure they have a Gucci there…
anyway…heathrow airport
Good: karachi , heathrow, paris
Bad: Zurich, islamabad.
Cairo was the shiitiest I went to - too bad to describe.
Dubai - the best (and of course Heathrow cos its in the UK!)
I havent been to many. Dubai airport is really good but Riyadh airport is really picturesque, was voted third biggest and fifth most beautiful airport in its prime some 8 years back.