$51 Car Rental Hamilton, OH

Search and Compare from Car Companies in Hamilton

I have a discount code

Featured car rental suppliers

Compare from agencies

car suppliers logo

  • protection illustration

    Change your mind

    Penalty-free cancellation on many/select car rentals
  • trophy illustration

    Treat yourself

    One Key members save 10% or more on over 1 million car rentals
    Learn about One Key
  • package illustration

    Shop smart

    Compare car suppliers and package your flight, hotel, and car to save

Top Car Deals in Hamilton

* Price found within the past 6 days. Click for updated prices.

Standard SUV

Chevrolet Equinox
  • 5 people
  • Unlimited mileage
Hebron, Kentucky, USA
Chevrolet Equinox

$51

includes taxes & fees
$32 per day
found 4 hours ago
Standard SUV Chevrolet Equinox

Fullsize Recreational Vehicle

Nissan Pathfinder
  • 7 people
  • Unlimited mileage
Hebron, Kentucky, USA
Nissan Pathfinder

$53

includes taxes & fees
$34 per day
found 4 hours ago
Fullsize Recreational Vehicle Nissan Pathfinder

Midsize Special

Kia Niro
  • 5 people
  • Unlimited mileage
Hebron, Kentucky, USA
Kia Niro

$71

includes taxes & fees
$46 per day
found 4 hours ago
Midsize Special Kia Niro

Fullsize Elite Pickup Regular Cab

Ram 2500 Crew
  • 5 people
  • Unlimited mileage
Hebron Ky/Cincinnati, Ohio, USA
Ram 2500 Crew

$71

includes taxes & fees
$47 per day
found 4 hours ago
Fullsize Elite Pickup Regular Cab Ram 2500 Crew

Standard Elite Special

Ford Mustang Mach-E
  • 5 people
  • Unlimited mileage
Hebron, Kentucky, USA
Ford Mustang Mach-E

$72

includes taxes & fees
$47 per day
found 4 hours ago
Standard Elite Special Ford Mustang Mach-E

Midsize Elite

Tesla Short Range Model 3
  • 5 people
  • Unlimited mileage
Hebron, Kentucky, USA
Tesla Short Range Model 3

$82

includes taxes & fees
$55 per day
found 4 hours ago
Midsize Elite Tesla Short Range Model 3

Special

Managers Special
  • 4 people
  • Unlimited mileage
Hebron, Kentucky, USA
Managers Special

$81

includes taxes & fees
$55 per day
found 4 hours ago
Special Managers Special

Mini Van

Chrysler Pacifica
  • 7 people
  • Unlimited mileage
Hebron, Kentucky, USA
Chrysler Pacifica

$84

includes taxes & fees
$57 per day
found 4 hours ago
Mini Van Chrysler Pacifica

Premium

Nissan Maxima
  • 5 people
  • Unlimited mileage
Hebron Ky/Cincinnati, Ohio, USA
Nissan Maxima

$85

includes taxes & fees
$58 per day
found 4 hours ago
Premium Nissan Maxima

Luxury

Chrysler 300
  • 5 people
  • Unlimited mileage
Hebron Ky/Cincinnati, Ohio, USA
Chrysler 300

$91

includes taxes & fees
$63 per day
found 4 hours ago
Luxury Chrysler 300

Compact

Kia Soul
  • 5 people
  • Unlimited mileage
Fairfield, Ohio, USA
Kia Soul

$73

includes taxes & fees
$65 per day
found 1 day ago
Compact Kia Soul

Economy

Chevrolet Spark
  • 5 people
  • Unlimited mileage
Fairfield, Ohio, USA
Chevrolet Spark

$73

includes taxes & fees
$65 per day
found 1 day ago
Economy Chevrolet Spark

Premium Elite Crossover

Genesis GV80
  • 5 people
  • Unlimited mileage
Hebron, Ohio, USA
Genesis GV80

$127

includes taxes & fees
$93 per day
found 4 hours ago
Premium Elite Crossover Genesis GV80

Luxury Elite

Volvo XC90
  • 7 people
  • Unlimited mileage
Hebron, Ohio, USA
Volvo XC90

$232

includes taxes & fees
$176 per day
found 4 hours ago
Luxury Elite Volvo XC90

Don't see what you're looking for?

See all car rentals in Hamilton
View all cars
Lowest prices found within the past 4 hours. Prices and availability subject to change. Additional terms may apply.

What you need to know for your Hamilton car rental

Reasons to book a car rental in and around Hamilton

Renting a car in Hamilton provides the freedom and flexibility to explore the city and its surroundings at your own pace. With attractions like the Butler County Courthouse, Pyramid Hill Sculpture Park, and the Fitton Center for Creative Arts, having a rental car allows you to easily manage your luggage and enjoy a variety of cultural and outdoor experiences. Families will find it convenient, as a car offers ample space for strollers and gear while keeping everyone together during your travels.

Additionally, a rental car makes it simple to visit nearby destinations such as Fairfield, just 4 miles away, which features the same key attractions as Hamilton. Other nearby cities like Ross and New Miami also offer attractions, including Stricker's Grove and Kings Island. With a car, you can explore these locations without the constraints of public transportation schedules. Hamilton's roads are easy to navigate, making it an ideal base for your adventures. Whether you're interested in culture, family activities, or outdoor fun, renting a car ensures you make the most of your visit to Hamilton and its surrounding areas.

Most popular car rental in Hamilton

  • Economy: The most booked car option in Hamilton, the Economy car accommodates up to 5 travelers and offers space for 2 medium suitcases. This makes it a perfect choice for solo travelers, couples, or small families wanting to explore the area comfortably, with the added benefit of managing luggage easily. Renting an Economy car allows for flexible travel plans, giving you the freedom to discover Hamilton at your own pace.

Top rated car suppliers in Hamilton

  • Enterprise: With 1 rental location in Hamilton, Enterprise is a top choice for travelers seeking flexibility. Known for their reliable service, they offer popular options such as Midsize SUVs and Fullsize vehicles, perfect for exploring the area at your leisure. Renting from Enterprise ensures a smooth experience, allowing you to manage your luggage and adjust your itinerary easily.

Where to stay around Hamilton

  • Fairfield: Located 4 miles from Hamilton, Fairfield is ideal for those seeking a family-friendly and business-themed experience. Attractions such as the historic Butler County Courthouse offer a glimpse into local culture. For outdoor fun, visit Pyramid Hill Sculpture Park, which is perfect for family outings. Fairfield also features various dining options, including restaurants and wineries, catering to diverse tastes.
  • West Chester: Just 9 miles from Hamilton, West Chester is another great choice for families and business travelers. It boasts access to Kings Island, an amusement park suitable for outdoor adventures. EnterTrainment Junction offers a unique cultural experience, making it a worthwhile visit. With ample shopping centers and restaurants nearby, West Chester provides a vibrant atmosphere for your stay.
  • Mason: Situated 14 miles away from Hamilton, Mason is well-known for its family-oriented outdoor adventures. Kings Island amusement park is a major draw for visitors, while Great Wolf Lodge Cincinnati Mason offers a comfortable lodging option. Food and drink enthusiasts can explore local restaurants and distilleries, making Mason a lively destination for those looking to combine relaxation and adventure.

10 tips to save on your car rental in and around Hamilton

  1. Use filters to find the right car: Refine your search by selecting vehicle type and desired features. Whether you require an SUV for additional space, a convertible for summer drives, or an economical car for cost-effectiveness, utilize the filters on Expedia to discover the best option for your journey.
  2. Book in advance to help lower costs: Rental prices can vary based on demand, making it wise to secure your car well in advance of your trip. By booking early, you are more likely to lock in lower rates and enjoy greater availability, particularly during peak travel seasons.
  3. Consider a smaller car for savings: Smaller vehicles typically come with lower rental costs and are easier to maneuver and park in crowded areas. Mid-size rentals strike a good balance between affordability, comfort, and fuel efficiency.
  4. Age guidelines: Drivers under 30 may encounter higher deposits or daily fees, and certain vehicle types—such as SUVs or luxury models—might not be available. This also applies to renters over the age of 70. Always verify the age restrictions prior to making a reservation.
  5. Check fuel policies: Some rentals operate on a full-to-full fuel policy, requiring you to return the car with a full tank to avoid additional charges. This is often the most beneficial option. Other policies may include full-to-empty or prepaid fueling options, which are acceptable as well. Just remember to return the vehicle empty in that scenario.
  6. Save on city and airport pickups: Picking up your rental car at the airport often incurs a surcharge, but the added convenience may justify the cost.
  7. Know your payment options: Many car rental companies only accept credit cards for payment.
  8. Understand your insurance coverage: Car rental insurance can protect you from unexpected expenses and provide peace of mind during your trip. Adding rental insurance is a straightforward process when booking through Expedia.
  9. Consider unlimited mileage: If you’re planning extended road trips, seek rentals that offer unlimited mileage to avoid incurring extra charges.
  10. Bring your driver's license and ID: A valid driver's license is mandatory for renting a car.

Best time to rent a car in and around Hamilton

The best value period to rent a car in and around Hamilton is November, when prices are slightly low and demand is moderate. January and February also offer lower demand, making them decent shoulder months for rentals. However, July tends to be the most expensive month, with slightly high prices and moderately high demand. June and May can also be busy, as demand peaks during these months, pushing prices higher. August returns to average demand and pricing.

calendar iconCalendar Monthtemperature iconTemperaturerain iconPrecipitationmostly cloudy iconCloudinessoccupation rate iconDemandprice iconPricing
January30.4°F (-0.9°C)Light RainMostly CloudyModerately LowAverage
February33.3°F (0.7°C)Light RainMostly CloudyModerately LowSlightly Low
March43.5°F (6.4°C)Light RainMostly CloudyAverageAverage
April53.2°F (11.8°C)Light RainMostly SunnyAverageAverage
May63.9°F (17.7°C)Light RainMostly SunnyModerately HighAverage
June72.0°F (22.2°C)Light RainMostly SunnyModerately HighAverage
July75.6°F (24.2°C)Light RainMostly SunnyModerately HighSlightly High
August74.3°F (23.5°C)Light RainMostly SunnyAverageAverage
September68.4°F (20.2°C)Light RainMostly SunnyAverageSlightly Low
October56.7°F (13.7°C)Light RainMostly SunnyAverageSlightly High
November44.2°F (6.8°C)Light RainMostly SunnyAverageSlightly Low
December36.7°F (2.6°C)Light RainMostly CloudyModerately LowSlightly High

Finding the cheapest car rentals in Hamilton

Using our Search Wizard

If the deals that are available on our page do not suit your needs, then enter Hamilton into the search wizard at the top of the page. We will compare all the best deals available for your car rental in Hamilton and provide you with a list of the cheapest options, with no added fees.

Renting a car in Hamilton

Pay at pickup is available, so you don’t have to worry about spending your money until you arrive at your vehicle in Hamilton. We partner with reliable partners that guarantee an enjoyable experience for solo travelers, couples, and families. Package your car with a flight or hotel to unlock even more savings from Expedia.

Expected prices in Hamilton

Prices are subject to seasonal change depending on when you decide to arrange your car rental but right now you can book from $51.

Flexibility & Cancellation

Most car suppliers offer penalty-free cancellations, so you don’t have to worry about losing money if your plans change. To cancel your booking log into your account through the Trips portal. Click manage booking and cancel this car. If you needed to alter your booking, then you can create a new one once you have canceled.

We all love being rewarded

One Key members save 10% or more on select hotels, cars, activities and vacation rentals. Not only that, earn OneKeyCash for every dollar spent on eligible hotels, vacation rentals, flights, car rentals, and more when you book across our family of brands: Expedia, Hotels.com and VRBO. Learn more and join today.

Car classes available from Expedia in 2026

The classes of vehicles available will change depending on your chosen location.

Car Rental Information

Popular car types
SUV, Full Size, Economy
Car suppliers available
Our best deal of the day
$51
Our second best deal of the day
$53
Our third best deal of the day
$71
From the airport to your hotel
Airport Transportation
From popular domestic and international airports
Airport Car Rentals

Frequently asked questions

How much is a rental car per day in Hamilton?
Traveling around Hamilton doesn't have to break the bank, with daily car rental prices starting at $51 within the past seven days.
Can I rent a car from Cincinnati - Northern Kentucky Intl. Airport (CVG)?
With Payless and Thrifty Car Rental within a quick commute of Cincinnati - Northern Kentucky Intl. Airport (CVG), getting off the plane and out onto the road is easy.
What happens if I need to cancel my Hamilton car reservation?
We realize that plans change at the last minute. That's why many reservations allow for your money back if you cancel at least six hours before pickup. Your cancellation policy should include all the information you need. If you can't find the answer there, our Customer Service Portal is always accessible.
Where can I go on a road trip from Hamilton?
When you've covered all the well-known places in Hamilton, there's a lot more to discover in the surrounding region. Pick up the keys to a rental car, toss your bags in the trunk and get on the road. We've come up with some drives we're confident you'll enjoy:
  • Lexington is approximately 95 miles from Hamilton. Notable attractions like Keeneland Racing Course deserve to be high on your list here.
  • Why not check out the best of Louisville too? Top sights in this happening city include Churchill Downs. Louisville is around 100 miles from Hamilton.
  • Make your way to Stan Hywet Hall and Gardens to discover some local nature. Take a picnic to enjoy or just recharge your batteries in the fresh air. From Hamilton, it's about 200 miles away.
How do I find the best car rental deals in Hamilton with Expedia?
Getting the best deal on your Hamilton rental car is a piece of cake with Expedia. Choose your preferred car class, add some details and compare the offers from big-name suppliers. Why not add flights and hotels to your booking? You'll get access to even bigger savings when you combine your bookings into a package.
How old do you have to be to rent a car in Hamilton?
Usually, the rules are 21 years and over in Hamilton. It should be noted that most outlets will charge extra fees for young renters. Check before you pick your ride, as rules may differ between rental car providers. Keep in mind that if you're planning to rent a specialty vehicle or a large car like a premium SUV, rules may require drivers to be older than 21.
What do you need to rent a car in Hamilton?
While rules may differ between outlets, the two main things you'll need are your driver's license and a credit card in the same name. You don't need to take out the company's auto insurance. However, proof of alternative coverage may be required.
What is the cheapest car rental in Hamilton?
Based on prices found over the past seven days, you could've jumped into the driver's seat of a rental car for just $51 a day. The second lowest daily rate on offer in Hamilton was $53. These rates were available on Expedia, with a rental starting date within the next year. Prices and availability are subject to change and additional terms apply.
Can I rent a car for a month or longer in Hamilton?
Yes, so you won't need to rebook a rental car mid-vacation. Visit our long-term car rental deals page, enter your trip details and find a set of wheels to call your own for however long you need.
Where can I find a Hamilton car rental if I am younger than 25?
Age policies differ between rental companies, so you'll have to do a little homework. Managed to find a Hamilton supplier that does rent to under 25s? Great! Just bear in mind that a surcharge often applies to drivers aged between 21 and 24. The terms and conditions of each rental car you're considering should have all the information you need.
What insurance should I choose for my car rental in Hamilton?
A thorough insurance plan is a smart choice for your upcoming Hamilton escape. That's why we suggest adding collision protection while organizing your car rental with Expedia. This insures your vehicle against theft, accident damage and vandalism. Some destinations may need you to have a minimum level of liability insurance. It's possible that this is included in your rental cost or your personal auto insurance, so check what you're covered for.
What are the best cheap car rental companies in Hamilton?
You can find cheap car rentals in Hamilton from $11 a day with Dollar Rent A Car's special. Budget offers fullsize 2 or 4 door cars starting from $17 a day, and economy 2 or 4 door cars starting from $18 a day. Enterprise provides midsize 2 or 4 door cars starting from $18 a day, and standard SUV cars also starting from $18 a day. Comparing these suppliers on Expedia can help you find a car rental in Hamilton that fits your budget. For more options, explore Economy Car Rentals in Hamilton.
What are the best luxury car companies in Hamilton?
For luxury car rentals in Hamilton, you can find premium options through providers like Enterprise, Alamo Rent A Car, and Sixt. Enterprise offers premium pickup regular cab vehicles starting from $31 a day. Alamo Rent A Car provides premium crossover vehicles starting from $27 a day. Sixt also has premium options available. These luxury rentals often come with enhanced comfort and features, making them suitable for travelers seeking a more upscale experience. For more options, explore Luxury Car Rentals in Hamilton.
Can I rent a car one-way in Hamilton?
Yes, a one-way car rental in Hamilton is available, with prices starting from $19 a day. This option is excellent for regional road trips where you plan to pick up your vehicle in Hamilton and drop it off at a different location. Providers like Enterprise and Alamo Rent A Car may offer flexible one-way policies, providing convenience for travelers who do not intend to return to Hamilton. For more options, explore Standard Car Rentals in Hamilton.
Can I rent a car round-trip in Hamilton?
Yes, Hamilton is well suited to round-trip rentals, with options starting from $13 a day. Picking up and dropping off your rental car at the same location generally helps you avoid one-way drop-off fees, making it a cost-effective choice for exploring the areas around Hamilton. Providers like Enterprise and Alamo Rent A Car offer wide round-trip availability, ensuring you have plenty of options for your travel plans. For more options, explore Fullsize Car Rentals in Hamilton.
What are the best car rentals in Hamilton?
Car rentals in Hamilton offer extensive vehicle variety. The most popular car classes available include:
  • Midsize 2 or 4 door
  • Standard SUV
  • Midsize SUV
  • Compact 2 or 4 door
  • Special
Most vehicles come with automatic transmission, and both automatic and manual transmissions are available. Families often prefer SUVs or minivans for space and comfort, while couples and solo travelers might find economy or compact cars more suitable for city navigation and fuel efficiency. Choose a vehicle based on your passenger count, luggage needs, and budget. For more options, explore Minivan Car Rentals in Hamilton.
What are the best car rentals in Hamilton for solo travelers?
The best car rentals in Hamilton for solo travelers are economy and compact classes, as they are small, easy to park, and fuel-efficient for one person exploring at their own pace:
  • Economy 2 or 4 door, starting from $18 a day — this class is nimble on city streets and simple to slot into small parking spaces
  • Compact 2 or 4 door, starting from $21 a day — offers a little more room for luggage while remaining fuel-efficient
Both comfortably fit a solo traveler plus a bag or two. For longer scenic drives, consider sizing up to a compact SUV for extra comfort and a higher ride. For more options, explore Compact Car Rentals in Hamilton.
What are the best car rentals in Hamilton for couples?
The best car rentals in Hamilton for couples balance comfort and easy handling for two:
  • Midsize 2 or 4 door, starting from $18 a day — offers smooth cruising for two
  • Compact SUV, starting from $21 a day — provides a higher ride for day trips around the region
Both options give a couple comfortable seating and trunk space without being difficult to park. For a bit more space and stability on longer drives, a standard SUV, starting from $18 a day, is also a great choice. For more options, explore Midsize Car Rentals in Hamilton.
What are the best car rentals in Hamilton for families?
The best car rentals in Hamilton for families are those with ample room for everyone and their gear:
  • Midsize SUV, starting from $23 a day — seats up to 5 people and offers space for up to 3 large suitcases
  • Mini passenger van, starting from $24 a day — seats up to 8 people and can accommodate up to 6 large suitcases, ideal for larger families with strollers and full luggage
SUVs and minivans provide the necessary space for the whole family, including car seats, strollers, and luggage, making them the most comfortable fit for trips around Hamilton. July and May tend to be peak months, so booking 4+ weeks ahead is advisable, as family-sized vehicles can have lower availability during these busy periods. For more options, explore SUV Car Rentals in Hamilton.
Are there any car rental companies that provide electric cars in Hamilton?
Yes, Hamilton offers electric and hybrid vehicle options from several providers. Sixt, Budget, and Avis all offer electric vehicles starting from $19 a day. Enterprise and Alamo Rent A Car provide hybrid options starting from $57 a day. These eco-friendly choices are widely available on Expedia. Electric vehicles can offer savings on fuel costs. Planning your route and potential charging stops is recommended for longer trips.
What is the best time to book a car in Hamilton?
From January, prices in Hamilton are typically lower—rentals can start from as little as $17 a day during this period. July tends to be the busiest month, when high demand can lead to higher prices. May is also a peak month for car rental demand. Booking 3-4 weeks ahead can help with availability and pricing, especially during these busier times. Many bookings allow free cancellation 24+ hours before pickup, giving you the flexibility to book early and rebook if rates drop.
What are the best car companies in Hamilton?
Car rentals in Hamilton are available from providers like Enterprise, Alamo Rent A Car, Sixt, Budget, and Avis, offering a variety of vehicles suited to different driving needs. Enterprise provides midsize 2 or 4 door cars and standard SUVs. Alamo Rent A Car offers midsize SUVs and special vehicles. Sixt features compact SUVs and fullsize 2 or 4 door cars. Budget has fullsize 2 or 4 door cars and economy 2 or 4 door cars. Avis rounds out the choices with economy 2 or 4 door cars and special vehicles. For city driving, a compact or economy car offers easy maneuverability and better fuel efficiency, while an SUV provides more space and stability for longer trips or if you anticipate varied road conditions. For more options, explore Premium Car Rentals in Hamilton.
What are good day trip destinations from Hamilton by rental car?
Exploring the area around Hamilton by rental car offers several excellent day trip opportunities for families, couples, and small groups. You can easily reach these destinations with a comfortable rental car:
  • Spooky Nook Sports Champion Mill: Located just 1 mile from Hamilton, this sports complex is a great option for families and sports enthusiasts looking for local activities.
  • Liberty Center: Approximately 13 miles away, this destination in West Chester offers shopping and entertainment, suitable for couples or families.
  • Miami University: About 15 miles from Hamilton in Oxford, this charming university town is perfect for a leisurely visit for couples or those interested in a cultural experience.
  • Hueston Woods State Park: For nature lovers and active families, this state park is approximately 19 miles away, offering hiking and outdoor activities.
  • Kings Island: An amusement park located about 20 miles from Hamilton, Kings Island is an ideal day trip for families seeking thrills and entertainment.
For these day trips, a midsize car starting from $18 a day or a compact car starting from $23 a day provides good value and comfort for couples or small groups. Families or those needing more space for luggage and gear, especially for trips to Hueston Woods State Park or Kings Island, might prefer an SUV like a standard SUV starting from $18 a day, a midsize SUV starting from $23 a day, or a mini passenger van starting from $31 a day. Remember to fuel up before heading out and check the operating hours for attractions or park conditions for a smooth trip. For more options, explore Convertible Car Rentals in Hamilton.
Are there any hidden fees when renting a car on Expedia?
Expedia aims to show the key price and important rental details clearly during booking, so you know what to expect before you reserve. In some cases, car rental companies may apply additional charges at pick-up or during the rental, such as security deposits, tolls, fuel charges, extra driver fees, or local requirements, so it's worth checking the supplier's rental terms before you book.
Are there any long-term car rentals in Hamilton?
Yes, there are several long-term car rental options available in Hamilton. Whether you're planning an extended holiday with the family, relocating temporarily, or simply need a vehicle for several weeks or months, many car rental providers offer flexible long-term rental plans tailored to your needs. Click on our long-term car rental deals page, enter your trip information and then book a ride that suits.
Do you need insurance to rent a car in Hamilton?
No, you don't need personal auto insurance to rent a car in most cases. You will, however, be required to purchase some insurance to cover the duration of the rental. Rental companies will offer this insurance when you rent the car. Certain personal car insurance policies can also be applied to rental cars, and travelers can even use non-owner car insurance if they rent cars often but don't have a car of their own. Additionally, some car rentals simply include rental car insurance within the price of the rental.
How much does it cost to rent a car in Hamilton?
Budget car rental in Hamilton can be easy to find, with prices based on rates seen within the past seven days from $51. To find some of the cheapest options, sort your search results by price and use filters to match your budget and travel needs. For added flexibility, it's also worth exploring one-way car rentals.
What are the top car rental deals in Hamilton?
No matter what kind of vehicle you're looking for, Expedia makes it easy to find a great car rental deal in Hamilton. The easiest way to get a good deal on a rental car is to use our filters. At the top of the filter list, you'll find a section featuring our best car rental offers. Check the filter for "Great Deal," and your search results will be filled with specials. Compare offers from trusted rental providers, choose the option that fits your trip, and book with confidence. For even more value, bundle your Hamilton car rental with a hotel or flight to unlock additional savings.
What do I need to rent a car in Hamilton?
To rent a car in Hamilton, a current driver's license and a credit card in the same name are essential. If you're opting out of the company's insurance plan, then you may also need proof of other coverage. Rules may differ between rental companies, so read through your policy.
What happens if I need to cancel my Hamilton car rental?
If you need to cancel your Hamilton car rental, read over the policy to be sure, but almost all prepaid rentals are eligible for a complete refund if you notify us at least six hours prior to the pickup time, though there may be some exclusions so check your itinerary for more information, or just click through to our Customer Service Portal.

Explore a world of travel with Expedia