£150 Cheap Flights from Ontario (ONT) to Atlanta (ATL)

View £150 flight on Mon, 27 Apr 2026Opens in a new window

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

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Cheap Flights from Ontario (ONT) to Atlanta (ATL)

Prices were available within the past 7 days and start at £150 for one-way flights and £331 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Wed, 20 May - Wed, 27 May
ONT
Ontario
ATL
Atlanta
£331 Return, found 1 day ago
£331
Return
found 1 day ago
Select Alaska Airlines flight, departing Wed, 20 May from Ontario to Atlanta, returning Wed, 27 May, priced at £331 found 1 day ago
Alaska Airlines
Wed, 20 May - Wed, 27 May
ONT
Ontario
ATL
Atlanta
£367 Return, found 1 day ago
£367
Return
found 1 day ago
Select Alaska Airlines flight, departing Wed, 20 May from Ontario to Atlanta, returning Wed, 27 May, priced at £367 found 1 day ago
JetBlue Airways
Mon, 8 Jun - Wed, 10 Jun
ONT
Ontario
ATL
Atlanta
£410 Return, found 2 days ago
£410
Return
found 2 days ago
Select JetBlue Airways flight, departing Mon, 8 Jun from Ontario to Atlanta, returning Wed, 10 Jun, priced at £410 found 2 days ago

Frequently asked questions

How much is a flight from ONT to Hartsfield-Jackson Atlanta Intl. Airport (ATL)?
Based on airfares available within the last 7 days on Expedia for flights departing within the next year, round-trip flights from ONT to Atlanta Airport start from £331. Book ASAP to get the best price for your trip. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from Ontario Airport to Atlanta Airport?
We understand that your situation can change unexpectedly, so we've made it as hassle-free as possible for you to cancel your flight online. Just head to the Customer Service Portal and follow the instructions.
How do I find cheap flights from ONT to ATL that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for Los Angeles - Ontario Intl. Airport (ONT) to Atlanta Airport flights, you'll see a "no change fees" filter for you to select.
How far is the flight from ONT to Atlanta Airport?
Around 3,100 kilometres separates Ontario and College Park, so pack some in-flight entertainment to keep you busy for a few hours. That gripping novel you haven't had time to finish will be just the ticket.
Which airlines fly direct from ONT to Hartsfield–Jackson Atlanta International Airport?
If you're looking to fly straight from Los Angeles - Ontario Intl. Airport (ONT) to Hartsfield-Jackson Atlanta Intl. Airport (ATL), Delta Air Lines (DL) is a popular option. It operates 69 monthly flights between Ontario and College Park.
Are Los Angeles - Ontario Intl. Airport (ONT) to Hartsfield-Jackson Atlanta Intl. Airport (ATL) flight tickets cheaper when they're purchased at the last minute?
Booking last minute from ONT to Hartsfield-Jackson Atlanta Intl. Airport (ATL) can be hit-or-miss. You might be lucky and score a bargain, but you could also miss out entirely! If you'd prefer to play it safe and start your travel planning early, Expedia compares flight deals up to a year in advance. Just keep in mind that not all airlines release their prices that far in advance. Our advice? Check back often as prices are updated regularly.

Frequently asked questions

What is the cheapest month to fly from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Atlanta, GA (ATL-Hartsfield-Jackson Atlanta Intl.)?
August is typically the cheapest month to fly from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Atlanta, GA (ATL-Hartsfield-Jackson Atlanta Intl.), with average return fares of approximately £320. This is about 8% lower than the average price throughout the year. August often sees lower prices as the peak summer travel season winds down, and families are preparing for the new school year, leading to a dip in demand. Other cheap months to fly from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Atlanta, GA (ATL-Hartsfield-Jackson Atlanta Intl.) include February and April.
Which airlines fly direct from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Atlanta, GA (ATL-Hartsfield-Jackson Atlanta Intl.)?
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, CA (ONT-Los Angeles - Ontario Intl.) to Atlanta, GA (ATL-Hartsfield-Jackson Atlanta Intl.)?
To find a cheap flight from Ontario, CA (ONT-Los Angeles - Ontario Intl.) 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, CA (ONT-Los Angeles - Ontario Intl.) to Atlanta, GA (ATL-Hartsfield-Jackson Atlanta Intl.)?
The best airline to fly with from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Atlanta, GA (ATL-Hartsfield-Jackson Atlanta Intl.) will differ from traveller to traveller. If you like to fly early, DL offers early morning flights. If price is the most important factor, DL typically offers the lowest fares. WN offers the most daily flights from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Atlanta, GA (ATL-Hartsfield-Jackson Atlanta Intl.), which is brilliant 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, CA (ONT-Los Angeles - Ontario Intl.) to Atlanta, GA (ATL-Hartsfield-Jackson Atlanta Intl.)?
When looking for the best time to fly from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Atlanta, GA (ATL-Hartsfield-Jackson Atlanta Intl.), it's a balance between price and popularity. Based on booking data from the past year, the cheapest months to fly are typically August and February, with average return flights costing around £320. However, July is the most popular month for this route, meaning you'll find plenty of flight options and schedules to choose from, though prices might be higher. If you prioritize savings, aim for August or February; if flexibility and choice are key, July offers many options.
How many flights per day from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Atlanta, GA (ATL-Hartsfield-Jackson Atlanta Intl.)?
There are approximately 3 nonstop flights per day from Los Angeles - Ontario Intl. (ONT) to Hartsfield-Jackson Atlanta Intl. (ATL). For even more choice, look at flights that include layovers, as there are around 90 connecting flights per day. Some common connection points include Seattle - Tacoma Intl. (SEA), Sky Harbor Intl. (PHX), and Denver Intl. (DEN).
What is the earliest flight from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Atlanta, GA (ATL-Hartsfield-Jackson Atlanta Intl.)?
The earliest flight from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Atlanta, GA (ATL-Hartsfield-Jackson Atlanta Intl.) typically departs at approximately 12:05 AM local time, operated by F9. This is a seasonal service active in May. An early departure like this can help you maximise your time at your destination. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What day of the week has the most flights from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Atlanta, GA (ATL-Hartsfield-Jackson Atlanta Intl.)?
You'll find the most flights from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Atlanta, GA (ATL-Hartsfield-Jackson Atlanta Intl.) on a Friday, with around 53 flights available. This gives you plenty of options for your travel plans. Major airlines on this route include Southwest Airlines, American Airlines, and Delta Air Lines. Friday offers notably more flight options compared to other days of the week, making it a great day to plan your journey.
What are the most popular departure times for flights from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Atlanta, GA (ATL-Hartsfield-Jackson Atlanta Intl.)?
The most popular departure times for flights from Los Angeles - Ontario Intl. (ONT) to Hartsfield-Jackson Atlanta Intl. (ATL) are in the early morning, from 6am to 9am. Approximately 35% of passengers prefer this time window. Many major carriers, including American Airlines, Southwest Airlines and Delta Air Lines, offer flights during this window. These times work well because you can get an early start to your travel day and arrive at your destination with plenty of time left.
How long does it take to fly from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Atlanta, GA (ATL-Hartsfield-Jackson Atlanta Intl.)?
Flying nonstop from ONT to ATL takes around 4 hours 20 minutes, with the route covering approximately 1,894 miles. Flights with a layover typically take 1 hour 40 minutes longer than direct options. 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, CA (ONT-Los Angeles - Ontario Intl.) to Atlanta, GA (ATL-Hartsfield-Jackson Atlanta Intl.)?
Select the "Business class" and "First class" filters when looking for ONT to ATL flights on Expedia. This is the easiest way to compare prices, routes and flight times for your trip.
How do I earn miles on a Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Atlanta, GA (ATL-Hartsfield-Jackson Atlanta Intl.) flight with Expedia?
It's easy to earn miles on a Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Atlanta, GA (ATL-Hartsfield-Jackson Atlanta Intl.) 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.
What airports do you fly into for Atlanta from Los Angeles - Ontario Intl. (ONT)?
From Los Angeles - Ontario Intl. (ONT), you can fly directly into Hartsfield-Jackson Atlanta Intl. (ATL) to reach Atlanta. Some flights may connect through major hubs like Denver Intl. (DEN), Portland Intl. (PDX), San Francisco Intl. (SFO) before reaching Atlanta. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Atlanta, GA (ATL-Hartsfield-Jackson Atlanta Intl.) at the last minute?
Typically, booking a last minute flight from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Atlanta, GA (ATL-Hartsfield-Jackson Atlanta Intl.) 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, CA (ONT-Los Angeles - Ontario Intl.) to Atlanta, GA (ATL-Hartsfield-Jackson Atlanta Intl.) flight and hotel package?
Securing a Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Atlanta, GA (ATL-Hartsfield-Jackson Atlanta Intl.) 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, CA (ONT-Los Angeles - Ontario Intl.) to Atlanta, GA (ATL-Hartsfield-Jackson Atlanta Intl.)?
If you booked your Ontario, CA (ONT-Los Angeles - Ontario Intl.) 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
Los Angeles - Ontario Intl.
Destination airport
Hartsfield-Jackson Atlanta Intl.
Return price
£330
Distance
3029 km
Average flight time
8 hours 19 mins

Book with confidence

Compare flights from Ontario to Atlanta easily and book with confidence

For travelling on business or for pleasure, Expedia makes it easy to book your flights from Ontario 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 Los Angeles - Ontario Intl. 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 Los Angeles - Ontario Intl. (ONT) to Hartsfield-Jackson Atlanta Intl. (ATL)

The easiest way to view the best deals on flights from Ontario 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 Los Angeles - Ontario Intl. to Hartsfield-Jackson Atlanta Intl. start at just £331 and range up to £410.  

To find an even better deal, try  

  • being flexible on your dates – midweek flights can be cheaper
  • looking for other airports near Ontario and Atlanta
  • booking your flight during May, 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 to Atlanta flight with Expedia!

We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from Los Angeles - Ontario Intl. 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 to Atlanta easily and book with confidence

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