What is the closest airport to Downtown Montreal?

Question

What is the closest airport to Downtown Montreal?

Answer 1

dorval airport is the closest major airport.  It is located on the western end of the isle of Montreal.

Answer 2

Montreal only has one commercial airport - Trudeau International (formerly called Montreal Dorval).  

There was formerly a second airport (Mirabel), but it is now closed to commercial passenger service.

Answer 3

The second answer is right, you can only fly into Trudeau, you can get on the bus right from there, transfer to the 211 or 212 bus and get downtown in about 30 minutes arriving at Lionel Groulx Metro.

Cabs are $20 flat (could be $25 now) from airport to Downtown.