I mean, if you ignore cargo, sure. If you don't ignore it nor that more fuel is being burned by an average cargo flight (due to more weight compared to a commercial flight), it'd inconvenience everyone.
Expect cargo flight are responsible for a fraction of CO2 emissions from commercial aviation[1].
If you really want to push there are solutions:
Packages just take longer over sea (10-15 days) until we switch to an air ship (2-3) based transport system which doesn't have to pay so much energy of lifting.
I'm not saying we should leave it as is, but there are easier and more impactful things to focus on.