The cheapest times to fly from ONT to ATL are
- August 6th to November 18th
- December 3rd to February 25th (except the week of December 17th)
based on data collected exclusively by Champion Traveler across tens of millions of flights. Among all the dates above, the very cheapest time to fly from ONT to ATL is late October to early November. Prices can be as high as $1048 for Sunday flights during mid May, or as low as $282 for Tuesday flights around late October to early November.
When to Fly to Atlanta
Flying from Ontario, CA (ONT) to Atlanta, GA (ATL) will usually cost between $311 to $570 per person if booking more than four weeks in advance. On average the very cheapest time to fly is late October to early November with an average ticket price of $318. Due to high demand the most expensive time to fly is mid May, with an average price of $595. Planning your trip to low-cost times can easily save you $277 on economy flights and even more on first-class flights. Generally, any price below $417 can be considered a good price for a round-trip ONT to ATL flight.
See below for a graph of average weekly prices for the ONT to ATL route. All prices are for round-trip tickets in USD.
Compared to other flights, the ONT to ATL flight is much cheaper than the average and costs much less than the average flight leaving from Ontario. The average price per mile (for a direct flight) is $0.14, which is far below average.
Flight Prices by Day of the Week
Tuesday is usually the cheapest day to depart and return on this flight. Sundays are the most expensive days to fly out or take a return trip. Selecting flights on the least expensive days could save you up to $89 (19%) on this flight.
Departing prices are for round-trip flights returning on the day of departure. For example, a flight departing on Tuesday and returning a week later will cost an average of $381. Return trip prices are from the ATL to ONT flight, and often highlight the quality of our data in showing the same trend.
Departing Prices by Day
Return Trip Prices by Day
Nonstop Flights and Layovers
Travelers looking to fly from ONT to ATL can generally find a 0-layover flight. Because there is a direct flight option the real-world direct flight time of 4 hour 24 minutes may be realistic.
Flight Questions Answered
Still have questions about flying from ONT to ATL? We’ve got answers.
Which airlines fly this route?
You can find 7 major airlines flying this route most often: Alaska, American, Delta, Frontier, JetBlue, Southwest, United, and potentially more during busy seasons.
How far away is it from Hartsfield-Jackson Atlanta International Airport to Ontario International Airport?
The distance between the two airports is roughly 1895 miles or 3050 kilometers.
How long does it take to fly from ONT to ATL?
The real-world flight time for a nonstop ONT to ATL flight is about 4 hour 24 minutes.
How many flights go between Ontario, CA and Atlanta, GA?
It depends on the day of the week and the date, but a typical day might have around 96 available flights from ONT to ATL.
Airport Location Info
|Origination airport name||Ontario International Airport|
|Country||the United States|
|Destination airport name||Hartsfield-Jackson Atlanta International Airport|
|Country||the United States|
Late and Early Flight Data
Flights from ONT to ATL tend to depart late almost never compared to the average flight. According to our recently updated data, 13% of flights departed 5 or more minutes late, and 13% of flights left 5 or more minutes early. On average you can expect to leave ATL heading for ONT about 10 minutes late. This does significantly impact arrival time, as the average landing time in Atlanta, GA is about 2 minutes late. The numbers below show a recent average of take-off times versus the scheduled departure flight:
- Delta: 10 minutes late
- Some airlines not reporting
Please note that while we’ve worked hard to analyzed tens of millions of flights to get you this data, we do not calculate current live prices or guarantee pricing. Please see our partners using the links above for current offers.