Another way to go would be to keep burning jet fuel but purchase bricks of carbon from a sequestration company that captures it from the air.
I know there are more efficient types of carbon credits, like investing in cleaner energy in the first place, or increased efficient at the point of usage such as insulation, or preserving rainforest that would otherwise be developed.
The problem is all that gets complicated and thus subjective. Maybe carbon credits could work if it is based on a new type of 'coin' that is 1 kg of pure carbon that is chucked into an old mine.