How many times have you flown somewhere in the last 10 years? How many commutes have you made?
Travel is the most inefficient, wasteful, and anti-climate activity I can think of because for many cases it is simply unnecessary or discretionary. Beyond having some 100,000 flights per day pumping greenhouse gases directly into the atmosphere think of the infrastructure and workforce involved in running airports, hotels, car rentals, shuttles, parking lots, restaurants, uber/taxis, etc.
I think air travel should be rare and expensive especially for business and vacations. Perhaps a heavy tax on business and pleasure travel would be good place to start.
While we are at it work should be done remotely whenever possible and empty office buildings should be renovated into affordable housing.