Here's passenger figures for the 20 busiest routes from Heathrow for 2005:

1.New York (JFK) 2,939,596
2.Dublin 2,089,220
3.Paris (CDG) 2,010,765
4.Amsterdam 1,894,927
5.Frankfurt 1,530,543
6.Chicago 1,522,096
7.Los Angeles 1,383,191
8.Hong Kong 1,258,551
9.Dubai 1,183,020
10.Madrid 1,119,006
11.Washington (IAD) 1,074,286
12.Toronto 1,067,261
13.San Francisco 1,005,375
14.Singapore 995,935
15.Johannesburg 994,900
16.Tokyo 992,095
17.Rome 972,911
18.Boston 929,167
19.Munich 918,860
20.Zurich 904,671

Where did you get the data from? Not many airlines disclose route-specific passenger count information! Is there more for other airports?

^ He probably got it from the CAA.

So the intercontinental destinations are:

1.New York (JFK) 2,939,596
2.Dublin 2,089,220
3.Paris (CDG) 2,010,765
4.Amsterdam 1,894,927
5.Frankfurt 1,530,543
6.Chicago 1,522,096
7.Los Angeles 1,383,191
8.Hong Kong 1,258,551
9.Dubai 1,183,020
10.Madrid 1,119,006
11.Washington (IAD) 1,074,286
12.Toronto 1,067,261
13.San Francisco 1,005,375
14.Singapore 995,935
15.Johannesburg 994,900
16.Tokyo 992,095
17.Rome 972,911
18.Boston 929,167
19.Munich 918,860
20.Zurich 904,671[/QUOTE]

Thats quite a sizeable amount of cities.

And how much of Singapore is bound for Australia one wonders.

probably most of the singapore destined ones... probably half or more...

^ It's certainly not all Kangaroo route traffic. There is a good deal of O&D traffic as well. Singapore is the second largest base for British business in Asia after Hong Kong. There are loads of British expats living and working in Singapore (just walk around Boat Quay one evening and see for yourself....). There are also loads of Singaporean students at British universities and a sizable chunk of Britain's permanent Chinese population are Straits Chinese from either Singapore or Malaysia.

Interesting list :)

Yes, source is the CAA.

Wahtt !! KL is not on the list !!??

Those are O&D passengers, or total? Total of two directions, or one direction?

Wahtt !! KL is not on the list !!??No KL is at just 545,000 - or 660,000 for the whole of Malaysia. That's nowhere near enough to make the top 20 on this list.

what about UK domestic routes...wouldn't Manchester, Belfast, Edinburgh come near or at the top of that list???