Cheap National Car Rentals at Houston George Bush Intercntl. Airport, IAH

Planning to rent a car with at Airport but are under 25? No worries! You can still rent a car. Just note that rental companies might have additional fees and restrictions for younger drivers. When you search for a car, simply deselect ‘Driver aged between 25 - 75’ and enter your actual age.

If you have a specific vehicle in mind, opt for rentals that guarantee your chosen car type. This ensures that you receive the vehicle you expect, rather than being offered an alternative.

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.

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.

Always keep your rental agreement, identification, and insurance information easily accessible during your rental period. This can help resolve any issues quickly.

Research fuel prices in the area where you'll return the vehicle. Filling up at a local station may be cheaper than paying for fuel through the rental company, especially if they charge higher rates.

Many rental companies require payment by credit card and may not accept debit cards. If you only have a debit card, check the rental company's payment policies in advance and look for suitable options.

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