Cheap United Rentacar Car Hire Deals at Porto Airport, OPO

Planning to rent a car with for more than a couple of weeks? No problem! Simply enter your desired dates when searching, and we'll show you available options. Remember, renting for a full month might be cheaper than renting for three weeks.

Prefer an automatic car? offers automatic car rentals at Airport. Just select ‘automatic’ when searching, and we'll handle the rest, ensuring you get the convenience of an automatic transmission without any hassle.

Before your trip, confirm if your rental includes roadside assistance. This can be crucial in case of breakdowns or emergencies during your rental period.

Some rental agreements come with mileage limits, while others offer unlimited mileage. Make sure to review the mileage policy to avoid unexpected fees.

Determine if your rental provider has an airport desk or if you’ll need to take a shuttle to reach them.

When renting a car, understand the fuel policy. A 'Full-to-Full' policy means you return the car with a full tank, while 'Same-to-Same' means you return it with the same level of fuel. Full-to-Full is often more cost-effective.

Some rental companies offer a free tank of fuel with your rental. Be sure to understand the terms, including how much fuel you need to return the car with and any potential fees for not meeting these conditions.

Check the operating hours of your rental company, as some may have limited hours at airports.