You can donate to The Conservation Fund at any time for past, current, or future trips. Or you can offset a trip during your booking on Travelocity.

Here's how

1. After choosing your Flight + Hotel Vacation or Hotel, you'll be given the option of adding an Activity.
2. Select or scroll down to the Other Services category.
3. Under Other Services, choose Donate to The Conservation Fund.
4. Use the estimates to customize a carbon offset for your trip.
5. Complete your booking

Booking just a flight? Purchase your airfare first and then come back to make a donation.