Metrolinx says the Union Pearson Express is busier than usual this morning, the first day it's dropped its rates.

Metrolinx spokesperson Vanessa Barrassa says the agency doesn't have this morning's ridership numbers yet, but said the goal of reducing fares is to boost ridership.

Starting today, a new one-way fare from downtown Toronto to Pearson airport will be $9 with a Presto card, which is a whopping $10 less than it was yesterday.

If you don't have the green transit card, a one-way trip will cost $12. Previously, the cost to ride without a Presto card was $27.90 per one-way trip or $19 with a Presto card.

For a full one way ride, seniors will be charged $5.64 with a Presto card and $6 without one while children 12 years of age and younger can ride the UPX free of charge.

A new one-way fare from downtown Toronto to Pearson airport will be $9 with a Presto card, which is a whopping $10 less than it was yesterday. (Metrolinx)

Once dubbed by MPP Michael Harris as a transit route that was "becoming a white elephant on the rails," the Ontario Liberals had a change of heart when they opted to drop the cost to ride last month.

Torontonians bemoaned the relatively high cost to ride the airport link, saying other transit options were much cheaper. When Metrolinx made the service free for Family Day weekend, thousands of people waited up to three hours to catch a ride.

Last September, it was reported that the link between Toronto's downtown Union Station and Pearson airport in Mississauga had seen ridership drop to 10 per cent capacity with only 2,500 commuters on board each day.

The airport link opened last June. It takes 25 minutes to travel the three-stop route and departs every 15 minutes during airport hours.