So how much to green my India trip ?

So lately the biggest perk at work is trips to India, very welcome if you have folks back home. But these trips come at an expense, a total of 3,300 kg of carbon dioxide, say 4000lb of carbon dioxide including trips to/from the airport, very carbon intensive accommodation and food that has definitely a lot of miles. So for a mere $ 23.80 I can be absolved of my carbon indiscretion. On the other hand, a tree is estimated to offset about 2000 lb of CO2 in its lifetime. So I am off to planting two trees which I hope to do over the weekend.