If you're travelling by car just leave them wet in a tray and dry them at home. I know someone who did it just like that. He used to print in a university darkroom till late at night. One night he picked me up on his way back home. We started talking about the photos. At one point he stopped the car under a street light, took the tray out of the trunk, and we spread the wet 30x40cm pictures all over the car bonnet to continue our talk there