Welcome to European Tribune. It's gone a bit quiet around here these days, but it's still going.
Wikipedia does say
There are approximately 50 daily departures from Dublin to all five London airports (Stansted, Luton, Gatwick, Heathrow and London City), The Dublin-London route is the second busiest route in the world after the Hong Kong-Taipei route.
50 daily departures times (say) 350 days times (say) 200 passengers per flight gives 3.5M passengers.
During the 1980s, major competition, especially on the Dublin-London routes, resulted in passenger numbers swelling to 5.1 million in 1989.
Top 10 International Arrivals Figures for 2008.
Rank	Origin				     Number of Passengers
1	   London Heathrow Airport, England, United Kingdom	894,536
2	London Gatwick Airport,  England, United Kingdom	541,593
3	   London Stansted Airport, England, United Kingdom	462,756
for a total of 1.9M

Conclusions: the Eurostar figures count both departing and arriving passengers, otherwise the Heathrow figures for 2008 would be way off between different sources. The total Dublin-London traffic is over twice that for Dublin-Heathrow and it probably does exceed the Madrid-Barcelona traffic but it didn't in 2007 (Madrid-Barcelona was 33% higher a year earlier).

100 passengers per flight is a better average than 200 at least for the Dublin-London distance range.

En un viejo país ineficiente, algo así como España entre dos guerras civiles, poseer una casa y poca hacienda y memoria ninguna. -- Gil de Biedma

by Carrie (migeru at eurotrib dot com) on Fri Dec 18th, 2009 at 04:04:36 PM EST
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