travel between venice and canary islands

The only way to get from Venice to the Canary Islands is to fly, unless you're a VERY good swimmer. Look at http://www.skyscanner.com/ for flights. Even if you only need a one-way ticket, see if it's cheaper to buy a round trip ticket and discard the unused portion. Have you booked your trans-Atlantic ticket yet? If not, figure out where you are starting and ending your trip (the Canaries or somewhere else) and book an open jaw ("multi-city") ticket; for instance, from North America to Rome, then from Gran Canaria back to North America. This will not be much more expensive than a round trip to the same city, and will save you lots of time and money in the end.

airplane

I need to clarify my question-what city would I travel to after leaving Venice to get to Canary Islands.

Madrid.