Oh gosh, that's 36 hours in the air, Hans? Ouch!! I'm counting total transit time -- for example, a flight I almost booked from Amsterdam to Cape Town had a 2 hour hop to Vienna with an 11 hour layover, followed by a 6.5 hour flight to Ethiopia with a 17 hour layover, followed by a 9 hour flight to Cape Town. Total transit = 45+ hours. Pretty rough!
As with all types of photography, smart business sense is key. There are many ways to make a living with travel photography, and much of it extends well beyond your photo gear into social media marketing, content development, negotiation and sales. But the first step is to get out into the world and shoot. Start with anyplace you've been dreaming of traveling, and go! Plan ahead, do some research, and don't shoot like a tourist. Can't afford to travel? Search for opportunities in your nearest city to begin building your portfolio.
After spending the last 6 years fiddling and learning photography, my wife and I are about to move to Cambridge, UK from Melbourne. We are planning to post and write about our European trips in a capacity that is more than just telling our family what we are doing with the goal of allowing our work to eventually pay for our travel. Our first real post will be up soon, looking at our short weekend trip into the Wimmera/Mallee to visit the new Silo Art in the region. My Wife is a much better writer than I am and is currently editing!