Five minutes from the AP-8, BIO rental cars are built for side-trips, not city hops
Pick up your car in Terminal T1 at Bilbao Airport and you’re on the AP-8 or N-637 within about 5 minutes, which is why people use BIO as a launch pad for San Juan de Gaztelugatxe, Getaria, or Rioja Alavesa rather than just the 12 km run into Bilbao. Multiple brands sit together in the on-site car hire area, and with traffic light, you’ll be at Bilbao city limits in 15–20 minutes.
Most week-long rentals for a small car run around €25–30 per day in low to shoulder season if booked early, but prices spike in August and over Spanish national holidays. Desks open from the first departures to the last arrivals (roughly 06:00–23:00), though some lower-tier brands shorten weekend hours, so check your exact pick-up and drop-off times when you book.
Regulars point out that picking up and returning at the airport lets you skip Bilbao’s one-way grid and residential parking rules, which are enforced with fines of around €90. Reddit threads on r/Bilbao flag that many central hotels charge nightly parking fees of €15–25, which quickly wipes out the benefit of having a car if you’re only staying inside the city.
For itineraries limited to Bilbao and San Sebastián, r/spain users note that buses between the two cities run roughly every 30–60 minutes and take about 1 hour 15 minutes, so they only rent at BIO when heading into smaller villages or the Rioja countryside. FlyerTalk posters often do Bilbao city by public transport first, then collect a car the day they drive out, sometimes from a downtown branch near Abando station.
Queues at the counters can stretch to 30–45 minutes on summer Saturdays and around puente (long weekend) holidays when several flights land close together. Some frequent visitors deliberately schedule pick-up for a mid-week afternoon, roughly 14:00–16:00, reporting shorter lines and faster handover times.
Common complaints in Google reviews: aggressive add-ons for extra insurance, fuel policies that lead to extra €50+ charges, and claims about minor scratches, especially from budget brands. A lot of drivers recommend photographing the car from every angle, with time stamps, and getting the fuel level noted in writing on the contract before leaving the T1 car park.
Finding the return can be awkward if you just follow sat-nav; several reviews say GPS tries to send you past the access road, which adds an extra 5–10 minutes. Follow the blue “Rent a Car” signs once you’re within about 3 km of the airport instead of the map, and keep your final fuel stop within that radius so you’re not hunting for a station under time pressure.
Quick tip: book the smallest car that fits your group; streets in Basque coastal towns can pinch to under 2 meters wide, and a compact hatchback is much easier to thread into older village parking than an SUV.