I just added some research and numbers about that in section “3. If you must fly”. The tips now contained there already enable emission savings of 50-70%, compared to an average “mindless” flight, and depending on the situation at hand.
(And @ilaria, I propose you submit this manual to C-KIC as a companion document for the Distributed Collaboration Manual. Because it is relevant for their goal of reducing emissions from business travel. Not commissioned by them, but let’s say it’s a free bonus 
)