Which altitude and layer of the atmosphere do large passenger planes fly at? What is the outside temperature?

Question

This is refering to a long distance trip. For example, Toronto(yyz) to Venezuela.

Answer 1

I love YYZ

-.-- -.-- --..

Answer 2

u will usu fly between 30,000 feet - 37,000 feet altitude.  outside temp depends on climate where u fly over of course, but is always WAY colder than on the ground.  usually the temp @ high altitude ranges from 40* F to -50*F!!  SOO that means if u get window seat on long flight, u will most always get colder halfway into the flight and toward the end than at the start.  bring a blanket or grab 1 or 2 AS SOON AS u board the aircraft.  there arent always blankets available to each person. they run out sometimes. think about your needs way in advance and u will have a much better flight.  the SAME goes for food.  buy some snacks at least at the airport news stand and put in your carryon before u get on that long flight since u may not like the food or it may not be enough food.  

i've flown over 10 million miles if this helps.