Can I change a round-trip reservation to a one-way after i've booked or picked up my car?

No, you must return your car to the drop-off location you indicated in your booking reservation. Hotwire can only guarantee the quoted rate for the prearranged length and rental locations of your reservation. If you have made a regular-rate reservation and have not yet picked up the car, you can cancel the reservation without penalty and create a new reservation. To cancel your reservation, log in to your Hotwire account.

If you have made a regular-rate reservation and have already picked up the car, contact the car agency to see if they would be able to make a change.  Please note there may be additional fees that apply.