That is the classic problem of a correlation. If you are sitting in a room that is warm and you notice that when you are using your laptop the room is slightly warmer and when your laptop is off the room is slightly cooler would you say that the driving force for the temperature of the room is your laptop? Or could it also be the oven, the outside temperature, the heating/air conditioning, the number of people in the room, etc. we do have enough evidence that global air travel is a significant contributor to ghg and therefore climate change but it’s estimated to be 2.5% compared to agriculture which is 10%