The cheapest way to travel from Toronto to Niagara Falls is almost always via a discount bus service such as Megabus or FlixBus. If booked in advance, one-way tickets can often be found for as little as $15 to $25 CAD. These buses typically depart from the Union Station Bus Terminal in downtown Toronto and arrive at the Niagara Falls Transit Terminal. Another very affordable option, especially for seniors or those with a PRESTO card, is the GO Transit system. During the weekends, GO Transit offers a special "Niagara Falls Weekend Travel Pass" for roughly $10 CAD (one-way) or $18 CAD (unlimited weekend travel), which includes a combination of the Lakeshore West train and a connecting bus from Burlington. While there are private casino shuttles (like the Safeway Guest Bus) that were historically very cheap or free with a players' card, they have become more restrictive in 2026, making the standard public bus or the weekend GO Train the most reliable and budget-friendly methods for the general public.