Car rental prices at Ontario Airport

Ontario Airport car hire starts at around $61 a day for an Intermediate car, like a Volkswagen Jetta, when you book around a month before your trip in October 2026. A Compact car such as a Nissan Versa is about $59 a day, while a Fullsize car like a Chevrolet Malibu averages $73. Booking in the last 2 weeks drops the Intermediate price slightly to $59. Across the year, prices swing from $59 a day in November 2026 for an Economy car up to $108 in July 2027 for a Fullsize, so use the price checker for your exact dates.

For October 2026 at Ontario Airport, timing barely moves the price: an Intermediate is $61 a day booked a month before your trip and $59 in the last 2 weeks. Booking 9 months before your trip averages $80 across the year, so if you have not arranged a car yet you have not missed a discount. Across the 395 airports we track car hire prices for, 48% of our customers book within 16 days of pickup. If your dates fall in July 2027, prepare for Fullsize cars to reach $108 a day compared to $59 for an Economy car in November 2026.

Budget is the cheapest company at Ontario Airport for an Intermediate car, averaging $54 a day over the last 12 months from 1,865 prices. Budget operates directly at the airport but requires a credit card, turning away debit cards for the deposit. Alamo costs $69 a day over the same period but holds a customer review score of 91/100 from 80 recent reviews. If you need to pay with a debit card, Thrifty accepts them and averages $57 a day from 1,227 prices.

The cheapest company can cost you a longer queue or a bigger deposit, so check the review score and desk wait beside each car in the results before you book.

National is the best-reviewed company at Ontario Airport, scoring 92/100 from 92 reviews with an average desk wait of 24 minutes. National is among the pricier options, averaging $74 a day for an Intermediate car across 4,238 prices. Budget is the cheapest scored supplier at $54 a day, rating 82/100 from 45 reviews with a shorter 15-minute wait. Europcar also averaged $54 a day over the last 12 months, but it does not yet have enough reviews for a score.

Review scores are CarTrawler customers' own, from the last five months; the score and the desk wait sit beside each car in the results.

At Ontario Airport, card deposits range from $200 with Budget to $299 with Avis, and only 1 of the 9 counters accepts a standard debit card. 6 counters insist on a credit card in the lead driver's name, while 2 accept debit cards for some cars only. Filter for debit cards in the price checker before you compare rates rather than after. Any mandatory extras charged at the desk are displayed beside each car with their price.

If you bring your own child seat, check your airline's rules first: most carry one free, some charge.

The biggest catch at Ontario Airport is paying your deposit, as 6 of the 9 rental counters refuse debit cards entirely. All 9 suppliers have counters on site, but long queues can delay your start, with National averaging 24 minutes and Alamo 23 minutes at the counter. Bring a credit card in the main driver's name or your booking will be cancelled before you leave the terminal. If you must use a debit card, Thrifty is the single desk that takes one without car restrictions.

Only 48% of prices at Ontario Airport are full tank out, full tank back, so read the fuel line under the car before you book.

For comfort on Southern California freeways, pick an Intermediate car like the Volkswagen Jetta at Ontario Airport, which costs around $61 a day in October 2026. An Intermediate seats 5 people and fits 4 bags, whereas stepping down to a Compact like the Nissan Versa costs $59 but holds only 3 bags. Stepping up to a Fullsize Chevrolet Malibu costs $73 for 6 seats and 4 bags. Every car offered is an automatic, so you will not pay extra to avoid shifting gears in stop-and-go traffic, but there are no electric or hybrid models in the fleet.