$79 Find Cheap Flights from Atlanta to Ontario - Compare and Save

These are the earliest and latest flight times available from Atlanta to Ontario:

• Earliest: departs at 8:10 am and lands at 12:47 pm
• Latest: departs at 9:52 pm and lands at 2:29 am.

The flight takes about 4h 37m.

Three cabin classes are available on flights from Atlanta to Ontario:

• Economy Class
• Business Class
• First Class

A nonstop flight from Atlanta to Ontario takes 4h 37m, covering 1,894 miles.

No, a passport is not required for this domestic route, but you will need a real ID-compliant driver's license, a state ID or another TSA-accepted form of identification.

Round-trip flights from Atlanta to Ontario range from $309 to $542, with an average of $429 over the past 12 months. Anything below $309 counts as a good deal.

Last-minute fares on this route (booked within two weeks of departure) run 26% above the $429 route average. Book 3 weeks before departure for the lowest fares.

On this route, layover flights are cheaper than nonstop options on average. Layover fares average $270 round-trip via Houston George Bush Intcntl (IAH), compared to $507 for nonstop.

Delta is the only airline operating Atlanta to Ontario flights. 79% of its flights are on time.

There is no standard. Checked-bag policies vary by airline on this route. Most carriers charge $35–$90 for the first checked bag in economy. Premium fares and elite-status bookings typically include a free checked bag.

The Airbus A321-100/200 family is used most often on this route, operated mainly by Delta and Alaska Airlines. Other aircraft seen on the route include Airbus A321neo variants.

Morning is the busiest departure period on Atlanta to Ontario flights, with 50% of flights leaving in that window. Evening departures account for 50%, afternoon flights for 0%, and night flights for 0%.

Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $255 to $1,585. That means the highest observed fare was about 6x higher than the lowest one.

Two airlines offer in-flight Wi-Fi on Atlanta to Ontario flights:

• Delta
• JetBlue

Pricing varies by airline and fare class. Some plans are included with the ticket or loyalty program; others are paid add-ons priced by flight length.

One-way fares from Atlanta to Ontario are currently in line with typical prices for this route. Average one-way fares are about $224.

Ontario Airport (ONT) hosts 5 major car rental companies, with daily rates starting from around $18 for economy cars. Top options include:

• Fox
• Thrifty
• Europcar
• Dollar
• Alamo

Flights from Atlanta to Ontario usually depart from Atlanta Hartsfield-Jackson (ATL) and arrive at Ontario (ONT).

Morning flights have the fewest delays on this route, while night departures tend to have the most.

A flight is considered delayed when it departs 15 minutes or more after its scheduled time. This is the standard used by the US Department of Transportation and most airline industry reporting. On the Atlanta to Ontario route, 21% of flights were delayed in the past 3 months, with delays averaging 2h 08m.

One-stop flights from Atlanta to Ontario most commonly connect through:

• Denver Intl (DEN) - 43% of one-stop connections
• Las Vegas Harry Reid Intl (LAS) - 19% of one-stop connections
• Dallas/Fort Worth (DFW) - 17% of one-stop connections
• Houston George Bush Intcntl (IAH) - 9% of one-stop connections

Yes. Flexible dates can save you up to 36% on flights from Atlanta to Ontario. Tuesday is the cheapest departure day at $359 round-trip on average, while Sunday is the most expensive at $559, a difference of $200.

KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

Only Delta operates flights between Atlanta and Ontario.

Flying via Austin Bergstrom (AUS) gives the shortest average 1-stop total travel time at 6h, compared with 6h 27m via Dallas Love Field (DAL) and 6h 28m via Houston Hobby (HOU).

Ontario is 3 hours behind Atlanta (Pacific Time vs Eastern Time). Plan for the time shift when scheduling connections or first-day activities.

Some of the most popular sights in Ontario are Ontario Convention Center and Cucamonga-Guasti Regional Park. These are among the most viewed places in Ontario on KAYAK.

Among airlines operating Atlanta to Ontario flights:

• Delta: offers extra legroom; offers free seat selection

Extra legroom and free seat selection availability depends on fare class and route.

Here are some options for this route, based on selected ticket types and cabin classes:

• Delta: a cabin bag and a checked bag in First Class
• JetBlue: a cabin bag in Economy Class class

Bag allowance can vary by ticket type, cabin class, route and airline, so always check the fare details before booking.

If you need to sleep after flights from Atlanta to Ontario, you can find a number of accommodation options close to the airport. There are three hotels that are within a 10min to 30min distance from the airport and include: the Azure Hotel and Suites Ontario Airport, the Candlewood Suites Ontario Convention Center and the Conform Suites Ontario Convention Center. The Comfort Suites Ontario Convention Center has an added advantage over the others since there is the provision of a free airport shuttle from the airport.

You might get hungry when at the airport or are just looking for a place where you may grab a snack when on the go. There are a variety of food concessions for you to choose from such as the Wolfgang Puck Pizza, Harvest and Grounds and the Cross Grain Brewhouse in Terminal 2 and the Wahoo’s Fish Taco, Rock and Brews, Einstein Bros and Bagels and Coffee Bean and Tea Leaf in Terminal 4. All the food concessions run on separate schedules and it is important to know none runs for 24h.

Traveler's Aid has workers that are dispersed across the Ontario airport and are available to help with issues like finding temporary housing, mailing money, recovering lost or stolen money, providing transportation, etc. In Terminal 2 and Terminal 4, respectively, the Traveler's Aid offices are situated between the escalator and baggage claim.

There are several of transport options because you might want to hunt for dependable transportation when heading to the airport. The most popular transportation choices are buses and cabs, with only MARTA bus 191 operating on the airport route. There are more taxis since they are plentiful, practical, and quick. You might also think about renting a car, with rental locations adjacent to the terminals and reachable through the ATL SkyTrain, the airport's inter-terminal transit system.