Every month, an airline printed advertisement, minus airline name and logo, is displayed for your guessing pleasure on Guess The Airline. The following is the answer to a previous game.
Once again, this was an advertisement published on an issue of The Economist from 1999. Are you ready? Scroll down!

How to guess it?
The Dublin and Shannon airport hubs were pretty much the only clues. Those airports indeed offer United States immigration pre-clearance facilities (such as those at major Canadian airports).
Statistics
Correct answers: 89% | Wrong answers: 11% | Wrong answers submitted: Air Italy, Alitalia, Continental, Transamerica.