Guardian reports: > Dozens of charter planes have been brought in from as far afield as Malaysia to assist with the mass airlift. Getting a charter plane has been quite difficult since the 737MAX grounding. Any excess capacity has been soaked up. There have been lots of unusual chartering by airlines that don’t usually charter. Air Canada had been using some, and it’s exceptionally rare for them to not use AC-branded…
Why are extra planes even necessary? There were already return flights planned, right? Why not have those fly anyway? Maybe they're owned by Thomas Cook and the crew won't get paid anymore, but it'd be nice if the government could step in and let those parts of the company continue operating until every is home again. That's much less disruptive than keeping the original planes grounded, and chartering different plan…
I would suspect airports are very unwilling to let those aircraft go anywhere until all the bills are paid as they might be only guaranteed way of getting money at this point.