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£130 Cheap Flights from Ontario Intl. Airport (ONT) to Atlanta (ATL)

View £130 flight on Thu, 10 Sept 2026Opens in a new window

Popular airlines from Ontario Intl. Airport (ONT) to Hartsfield-Jackson Atlanta International Airport (ATL)

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Cheap Flights from Ontario Intl. Airport (ONT) to Atlanta (ATL)

Prices were available within the past 7 days and start at £130 for one-way flights and £328 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Fri, 16 Oct - Fri, 30 Oct
ONT
Ontario
ATL
Atlanta
£328 Return, found 5 days ago
£328
Return
found 5 days ago
Select Alaska Airlines flight, departing Fri, 16 Oct from Ontario to Atlanta, returning Fri, 30 Oct, priced at £328 found 5 days ago
Delta
Sun, 20 Dec - Mon, 4 Jan
ONT
Ontario
ATL
Atlanta
£338 Return, found 3 days ago
£338
Return
found 3 days ago
Select Delta flight, departing Sun, 20 Dec from Ontario to Atlanta, returning Mon, 4 Jan, priced at £338 found 3 days ago
Alaska Airlines
Wed, 16 Sept - Wed, 23 Sept
ONT
Ontario
ATL
Atlanta
£352 Return, found 3 days ago
£352
Return
found 3 days ago
Select Alaska Airlines flight, departing Wed, 16 Sept from Ontario to Atlanta, returning Wed, 23 Sept, priced at £352 found 3 days ago
American Airlines
Wed, 5 Aug - Tue, 18 Aug
ONT
Ontario
ATL
Atlanta
£366 Return, found 3 days ago
£366
Return
found 3 days ago
Select American Airlines flight, departing Wed, 5 Aug from Ontario to Atlanta, returning Tue, 18 Aug, priced at £366 found 3 days ago
Alaska Airlines
Thu, 10 Sept - Thu, 17 Sept
ONT
Ontario
ATL
Atlanta
£372 Return, found 3 days ago
£372
Return
found 3 days ago
Select Alaska Airlines flight, departing Thu, 10 Sept from Ontario to Atlanta, returning Thu, 17 Sept, priced at £372 found 3 days ago
Alaska Airlines
Wed, 16 Sept - Wed, 23 Sept
ONT
Ontario
ATL
Atlanta
£390 Return, found 3 days ago
£390
Return
found 3 days ago
Select Alaska Airlines flight, departing Wed, 16 Sept from Ontario to Atlanta, returning Wed, 23 Sept, priced at £390 found 3 days ago
Delta
Wed, 25 Nov - Fri, 11 Dec
ONT
Ontario
ATL
Atlanta
£395 Return, found 3 days ago
£395
Return
found 3 days ago
Select Delta flight, departing Wed, 25 Nov from Ontario to Atlanta, returning Fri, 11 Dec, priced at £395 found 3 days ago
Alaska Airlines
Wed, 16 Sept - Wed, 23 Sept
ONT
Ontario
ATL
Atlanta
£395 Return, found 3 days ago
£395
Return
found 3 days ago
Select Alaska Airlines flight, departing Wed, 16 Sept from Ontario to Atlanta, returning Wed, 23 Sept, priced at £395 found 3 days ago
American Airlines
Sat, 15 Aug - Thu, 3 Sept
ONT
Ontario
ATL
Atlanta
£396 Return, found 3 days ago
£396
Return
found 3 days ago
Select American Airlines flight, departing Sat, 15 Aug from Ontario to Atlanta, returning Thu, 3 Sept, priced at £396 found 3 days ago
JetBlue Airways
Tue, 18 Aug - Fri, 21 Aug
ONT
Ontario
ATL
Atlanta
£10,699 Return, found 20 hours ago
£10,699
Return
found 20 hours ago
Select JetBlue Airways flight, departing Tue, 18 Aug from Ontario to Atlanta, returning Fri, 21 Aug, priced at £10,699 found 20 hours ago

Frequently asked questions

How much does a flight from Ontario Intl. Airport (ONT) to Atlanta, GA (ATL-Hartsfield-Jackson Atlanta Intl.) cost?
You can find one-way and return flights from ONT to ATL with Expedia. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see our cheapest fares first, and use the Price Tracking tool to receive alerts when ONT to ATL ticket fares go up or down.
What is the cheapest month to fly from Ontario Intl. Airport (ONT) to Atlanta, GA (ATL-Hartsfield-Jackson Atlanta Intl.)?
If you're looking for the most budget-friendly time to fly from Ontario Intl. Airport (ONT) to Atlanta, GA (ATL-Hartsfield-Jackson Atlanta Intl.), August is typically the cheapest month. You can expect average return fares around £320 during this time. August often sees lower prices as it's outside the peak summer travel season, and many families are preparing for the school year, leading to reduced demand. Other cheap months to fly from Ontario Intl. Airport (ONT) to Atlanta, GA (ATL-Hartsfield-Jackson Atlanta Intl.) include February and April.
Which airlines fly direct from Ontario Intl. Airport (ONT) to Atlanta, GA (ATL)?
Enter ONT to ATL and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
How do I find cheap flights from Ontario Intl. Airport (ONT) to Atlanta, GA (ATL-Hartsfield-Jackson Atlanta Intl.)?
To find a cheap flight from Ontario Intl. Airport (ONT) to Atlanta, GA (ATL-Hartsfield-Jackson Atlanta Intl.), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best airline to fly with from Ontario Intl. Airport (ONT) to Atlanta, GA (ATL-Hartsfield-Jackson Atlanta Intl.)?
The best airline to fly with from Ontario Intl. Airport (ONT) to Atlanta, GA (ATL-Hartsfield-Jackson Atlanta Intl.) will differ from traveler to traveler. If you like to fly early, Delta offers early morning flights. If price is the most important factor, Delta typically offers the lowest fares. Southwest Airlines offers the most daily flights from Ontario Intl. Airport (ONT) to Atlanta, GA (ATL-Hartsfield-Jackson Atlanta Intl.), which is great if flexibility is what you value most. The best carrier for this journey could also be the one you have a loyalty membership with, as flying with that airline or another airline within the same alliance could help you collect points or enjoy lounge access.
What is the best time to fly from Ontario Intl. Airport (ONT) to Atlanta, GA (ATL-Hartsfield-Jackson Atlanta Intl.)?
When looking for the best time to fly from Ontario Intl. Airport (ONT) to Atlanta, GA (ATL-Hartsfield-Jackson Atlanta Intl.), it's all about balancing good prices with flight availability. You'll find the cheapest flights in August or February, with average return fares around £320. While July is a popular month with plenty of flight options, it might not offer the lowest prices. If you're flexible, aiming for August or February could give you a great deal, and you'll still find good flight schedules to choose from.
How many flights per day from Ontario Intl. Airport (ONT) to Atlanta, GA (ATL-Hartsfield-Jackson Atlanta Intl.)?
You'll find around 3 nonstop flights per day from Ontario Intl. Airport (ONT) to Atlanta, GA (ATL-Hartsfield-Jackson Atlanta Intl.). For even more choices, look at flights that include layovers, as there are approximately 51 connecting flights per day. Some common connection points include Seattle - Tacoma Intl. (SEA), Dallas-Fort Worth Intl. (DFW), and Portland Intl. (PDX).
What is the earliest flight from Ontario Intl. Airport (ONT) to Atlanta, GA (ATL)?
Sort flights by "Departure (earliest)" on Expedia to find the earliest flight from Ontario Intl. Airport (ONT) to Atlanta, GA (ATL). To compare more early flights, use the "Early Morning" and "Morning" filters in your search.
What day of the week has the most flights from Ontario Intl. Airport (ONT) to Atlanta, GA (ATL-Hartsfield-Jackson Atlanta Intl.)?
You'll typically find the most flights from Ontario Intl. Airport (ONT) to Atlanta, GA (ATL-Hartsfield-Jackson Atlanta Intl.) on a Friday, with around 55 flights available. This gives you a good selection of options for your travel plans. Major airlines on this route include Southwest Airlines, American Airlines, and Alaska Airlines. Flight schedules are fairly consistent throughout the week, with Fridays having only slightly more flights than other days.
What are the most popular departure times for flights from Ontario Intl. Airport (ONT) to Atlanta, GA (ATL-Hartsfield-Jackson Atlanta Intl.)?
The most popular departure times for flights from Ontario Intl. Airport (ONT) to Atlanta, GA (ATL-Hartsfield-Jackson Atlanta Intl.) are in the early morning, from 6am to 9am. Many major carriers, including Southwest Airlines, American Airlines and Delta, offer flights during this window. Many travellers prefer this because it allows for an early arrival at your destination, giving you more time to settle in or start your day.
How long does it take to fly from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Atlanta, GA (ATL-Hartsfield-Jackson Atlanta Intl.)?
Direct flights from ONT to ATL usually take about 4 hours 20 minutes, traveling roughly 3,048 kilometers. If you opt for a connecting flight, expect to add around 1 hour 40 minutes to your journey. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Ontario Intl. Airport (ONT) to Atlanta, GA (ATL-Hartsfield-Jackson Atlanta Intl.)?
Yes, you can fly business class or first class between Ontario Intl. Airport (ONT) and Atlanta, GA (ATL-Hartsfield-Jackson Atlanta Intl.).Airlines that offer business class service on this route include:
  • Frontier Airlines
  • Delta
First class cabins are available on:
  • Alaska Airlines
  • Delta
  • United
  • American Airlines
How do I earn miles on a Ontario Intl. Airport (ONT) to Atlanta, GA (ATL) flight with Expedia?
It's easy to earn miles on a Ontario Intl. Airport (ONT) to Atlanta, GA (ATL) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
Is it cheaper to buy a plane ticket from Ontario Intl. Airport (ONT) to Atlanta, GA (ATL) at the last minute?
Typically, booking a last minute flight from Ontario Intl. Airport (ONT) to Atlanta, GA (ATL) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Ontario Intl. Airport (ONT) to Atlanta, GA (ATL) flight and hotel package?
Securing a Ontario Intl. Airport (ONT) to Atlanta, GA (ATL) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Ontario Intl. Airport (ONT) to Atlanta, GA (ATL-Hartsfield-Jackson Atlanta Intl.)?
If you booked your Ontario Intl. Airport (ONT) to Atlanta, GA (ATL-Hartsfield-Jackson Atlanta Intl.) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Ontario Intl. Airport
Destination airport
Hartsfield-Jackson Atlanta Intl.
Airlines serving
Alaska Airlines, JetBlue Airways
Return price
£327
Distance
3029 km
Average flight time
7 hours 24 mins

Book with confidence

Compare flights from Ontario Intl. Airport to Atlanta easily and book with confidence

For travelling on business or for pleasure, Expedia makes it easy to book your flights from Ontario Intl. Airport to Atlanta. Operating between them flights per day, 20 airlines cover the route. And fly direct, getting you to Hartsfield-Jackson Atlanta Intl. in just hours. If you have a preferred carrier, use our advanced search tool to find the right flight from Ontario Intl. Airport to Hartsfield-Jackson Atlanta Intl..  

To make things even better, in the advanced search, you can also choose to fly economy, premium economy, business or first class, select your maximum number of stops, and pick your preferred departure and arrival time. You can also opt for refundable and direct flights. 

Grab a great deal on your flight from Ontario Intl. Airport (ONT) to Hartsfield-Jackson Atlanta Intl. (ATL)

The easiest way to view the best deals on flights from Ontario Intl. Airport to Atlanta today is to enter your travel dates and hit search. From here, you can sort your results by price to see the cheapest flights first. Right now, return flights from Ontario Intl. Airport to Hartsfield-Jackson Atlanta Intl. start at just £328 and range up to £10,699.  

To find an even better deal, try  

  • being flexible on your dates – midweek flights can be cheaper
  • looking for other airports near Ontario Intl. Airport and Atlanta
  • booking your flight during October, the cheapest month on this route
  • varying your flight times – early morning and late at night are sometimes cheaper 

Why you should book your Ontario Intl. Airport to Atlanta flight with Expedia!

We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from Ontario Intl. Airport to Hartsfield-Jackson Atlanta Intl. for a budget break or a business trip with a bit of pleasure thrown in, we make it easy to secure the seat that’s right for you.  

Thanks to our supersized inventory that offers great choice all in one place, you know you’ll get a great deal with Expedia. Especially if you bundle your flight together with your hotel, you will unlock amazing savings. For added peace of mind, you can choose flexible bookings or filter to find refundable options, so you won’t pay a fee to change your flight.  

Compare flights from Ontario Intl. Airport to Atlanta easily and book with confidence

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