Car rental prices drop when you book through flight search sites, but you'll pay more if you rent at the airport

When you book a flight through Kayak, Google Flights, or Skyscanner, those same sites let you add a car rental to your itinerary. The rental companies offer lower daily rates on these bundled bookings than they do on their own websites — sometimes 20 to 40 percent less — because the flight site handles the booking and takes a commission. The catch is that airport rental locations charge facility fees (sometimes called airport concession fees) that can add $10 to $25 per day on top of the base rate. Off-airport locations in the same city rarely charge these fees.

The cheapest approach is to book your flight and rental separately: search for the flight on a flight comparison site, then search for the car on a rental company's own website or on Autoslash and Hotwire, which specialize in rental rates. Compare the total cost — base rate plus taxes, fees, and insurance — before you assume the bundled price is lowest. Some travelers find that booking the flight and rental together saves money despite the airport fees; others save more by splitting them.

Key Takeaways

  • Flight comparison sites offer lower car rental rates than rental company websites, but only at airport locations where facility fees can erase the savings.
  • Off-airport rental locations in the same city usually have no facility fees and may offer better total prices than airport branches of the same company.
  • Rental rates vary by pickup date, return date, and location, so compare the full cost (base rate plus all fees and taxes) across at least three sources before booking.
  • Your personal auto insurance or credit card may cover rental car damage, which can save you $15 to $30 per day if you decline the rental company's damage waiver.
  • Book your rental as soon as you book your flight, because prices rise as the travel date approaches, especially for popular destinations.

Where to search for the lowest rental rates

Start with the flight comparison sites where you booked your ticket: Kayak, Google Flights, Skyscanner, and Expedia all show rental cars alongside flights. These sites pull rates from the major rental companies (Enterprise, Hertz, Budget, Avis, National, Alamo) and some regional operators. The rates are often 15 to 40 percent lower than what you'd see on the rental company's own website, but the discount applies mainly to airport locations.

Then check Autoslash.com and Hotwire.com, which specialize in rental car rates and often show deals the flight sites miss. Autoslash lets you enter your dates and location, then tracks price changes and emails you if the rate drops — useful if you're booking weeks in advance. Hotwire shows discounted rates for same-day or next-day rentals and sometimes offers opaque bookings (you don't see the exact rental company until after you pay, but the price is lower).

Finally, visit the websites of the rental companies themselves — Enterprise, Hertz, Budget, Avis, National, and Alamo. Their direct websites sometimes show loyalty discounts or regional promotions that don't appear on comparison sites. Compare the total cost at each source, including all taxes and fees, before you decide.

Why airport rental locations cost more, and how to avoid it

Rental car facilities at airports charge concession fees to the airport authority — a percentage of each rental or a flat daily fee. These fees typically range from $10 to $25 per day depending on the airport and the rental company. The rental company passes this cost to you. An off-airport location of the same company in the same city usually has no such fee, so the base rate is lower even if the daily rental price looks the same on the website.

To find off-airport locations, search for the rental company by city name rather than airport code. Enterprise and Budget have locations in most neighborhoods; Hertz and Avis are less common away from airports. You'll need to arrange your own transportation to the off-airport lot — a taxi, rideshare, or rental shuttle — which costs money and time. For a one-week rental, saving $15 per day off-airport ($105 total) often justifies a $20 Uber ride to get there. For a one-day rental, the savings may not be worth the trip.

Some airports have off-airport rental centers a short shuttle ride away, which split the difference: lower fees than the terminal location but easier access than a neighborhood branch. Check the airport's website or call the rental company to ask whether this option exists at your destination.

Insurance and damage waivers: what you actually need to buy

Rental companies offer a damage waiver (called Loss Damage Waiver or Collision Damage Waiver) that costs $15 to $30 per day and covers dents, scratches, and theft. You do not have to buy it. Your personal auto insurance likely covers rental cars — check your policy or call your insurer before you travel. If your policy does cover rentals, declining the rental company's waiver saves you hundreds of dollars on a week-long trip.

Credit card companies also offer rental car coverage. American Express, Visa Signature, Mastercard World Elite, and some premium cards cover collision and theft if you charge the entire rental to that card. Read the card's benefits guide or call the card issuer to confirm the coverage applies to your destination (some exclude certain countries) and whether it's primary (pays first) or secondary (pays only after your auto insurance).

If you don't have auto insurance and your credit card doesn't cover rentals, buy the rental company's damage waiver. If you do have coverage, decline it and pocket the savings. Some rental companies pressure you to buy the waiver at the counter by asking "Do you want to decline the damage waiver?" — the answer is yes if you have other coverage, no if you don't.

Booking timing: when prices rise and when they fall

Rental car prices are lowest when you book far in advance — typically 4 to 6 weeks before your travel date — and rise as the travel date approaches. Prices also rise during peak travel seasons (summer, winter holidays, spring break) and fall during shoulder seasons (April, September, October). A rental that costs $35 per day when you book two months early might cost $60 per day if you wait until two weeks before departure.

Book your rental as soon as you book your flight. If the price drops later, Autoslash will notify you and you can rebook at the lower rate (most rental companies allow free cancellation up to 24 hours before pickup). Prices can also spike if a major event (conference, festival, sporting event) is happening in your destination during your travel dates — book even earlier if you're traveling to a popular city during a known event.

What to watch for when comparing prices across sites

Rental rates vary by pickup location, return location, pickup time, and return time. A car picked up at 10 a.m. and returned at 10 a.m. five days later costs less than one picked up at 2 p.m. and returned at noon, because the second booking spans an extra day. Make sure you're comparing the same dates and times across all sites.

Also compare what's included in the rate. Some sites show the base rental price but add taxes and fees at checkout; others show the total upfront. Taxes vary by state and city (rental tax can be 10 to 20 percent of the base rate), and airport facility fees vary by location. A rate that looks cheapest on one site may be most expensive after all fees are added.

Check the fuel policy. Most rentals require you to return the car with a full tank or pay a refueling fee (usually $6 to $10 per gallon, much higher than gas station prices). Some sites offer prepaid fuel, where you pay for a full tank upfront at a lower per-gallon rate and can return the car empty. For a week-long rental, prepaid fuel often saves money if you won't use a full tank; for a short rental, it's usually a waste.

Bundling flights and rentals: when it saves money and when it doesn't

Flight comparison sites offer bundled flight-and-rental packages at discounted rates. The rental discount is real — you're getting a lower rate than the rental company's website shows — but the airport facility fees often eat into the savings. A bundled package might show a $40 per day rental rate, which looks cheap until you see the $18 daily airport fee added at checkout, bringing the true cost to $58 per day.

To decide whether bundling saves money, calculate the total cost of three scenarios: (1) flight and rental booked separately through their cheapest sources, (2) bundled flight and rental through the flight site, and (3) flight booked through the flight site and rental booked off-airport through a rental company website. The cheapest option depends on your specific dates, destination, and how much you value the convenience of one booking instead of two.

Bundling does offer one real advantage: if your flight is cancelled or delayed, some bundled packages let you reschedule the rental without penalty. Check the terms before you book. If you're booking a rental for a trip with a non-refundable flight, bundling can provide peace of mind, though it usually costs more than booking separately.

Frequently Asked Questions

Can I book a rental car without a credit card?

Most rental companies require a credit card to hold the reservation, even if you plan to pay with cash or debit at pickup. Some companies accept debit cards but charge a higher damage deposit (sometimes $500 or more). Call the rental company before you book to ask about their debit card policy at your specific location.

What happens if I return the car late?

Late returns are charged at the daily rate or a higher hourly rate, depending on how late you are. A 30-minute overage might cost $15 to $25; a full extra day might cost the full daily rate. Return the car on time or call the rental location to ask for a grace period if you're running late.

Do I need an international driver's license to rent a car abroad?

Most countries accept a valid U.S. driver's license for rentals, but some require an International Driving Permit (IDP) as a secondary document. Check the rental company's website for your destination country, or contact your local AAA office to obtain an IDP before you travel.

Is it cheaper to rent a car for a week or rent by the day?

Weekly rates are almost always cheaper per day than daily rates. A week-long rental might cost $35 per day; the same car rented for three days might cost $55 per day. If you need a car for five or six days, booking a full week is usually cheaper than paying daily rates.

What if the rental company charges me for damage I didn't cause?

Take photos of the car's condition before you leave the lot and keep them with your rental agreement. If the company charges you for pre-existing damage, dispute the charge with your credit card company or contact your auto insurance company — they may cover the dispute. Keep all documentation from the rental company and your correspondence with them.