Pan Am
At&t
At&T or united airlines
UNICEF
Firefox
Ryanair (small Irish airline)
Unicef
The Globe had a sign of Atlas holding the Earth on his back.
Did you really mean "airplane" - or did you mean airline . -If airline it is Qantas.
Blue Eye Technologies have a logo that is a blue eye.
Eastpak
You can see the Indigo airline emblem on it's wikipedia page here.
Ryanair