Opening hours at Porto Francisco Sá Carneiro Airport: Autounion, 08:00–20:00 daily; Carfast Rent A Car, 06:00–22:30 daily; closed 25 Dec and 1 Jan; OPO Rent, 09:00–19:00 daily; Hertz, 06:00–23:59 daily; GoDrive, 08:00–20:00 daily; out-of-hours service available; PRO RENT, 08:00–20:00 daily; out-of-hours 20:00–22:30 and before 08:00 on request; CAEL, 06:30–19:59 daily; OK Mobility, 06:00–23:00 daily (06:00–07:00 and 22:00–23:00 only for confirmed bookings); 24 and 31 Dec until 19:00; Guerin, 06:00–23:00 daily (as of 1 Nov 2026); no after-hours pick-up; after-hours returns via drop box at no charge; Record Go, 07:00–23:00 daily; 24h key mailbox; Klass Wagen, not confirmed yet; International Car, 08:00–20:00 daily; Tangerine Rent A Car, 08:00–20:00 daily; out-of-hours service on request; Goldcar, 06:59–23:01 daily; Avis, 07:00–24:00 daily; 24h drop-off; Europcar, 06:30–23:59 daily; Sixt, 07:00–23:59 daily; Drive on Holidays, 08:00–20:00 daily (representative at arrivals 08:00–20:30); Budget, 07:00–24:00 daily; after-hours returns available; Centauro, 07:00–23:00 daily; Sicily by Car, 07:00–23:00 daily including holidays; out-of-hours supplement; Drive4Move, 08:00–20:00 daily; Green Motion, 07:00–21:00 daily; Drivalia, 08:00–20:00 daily; Surprice, 08:00–20:00 daily; Bravacar, 08:00–20:00 daily (DiscoverCars: 08:01–19:59); out-of-hours on request; Freerent, 07:00–23:30 daily. If your flight lands late, check the hours before you book.