Atlanta

$114+ Cheap flights from Ontario to Atlanta (ONT - ATL)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/22. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — ATL
Jul 10 — Jul 171
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Find cheap flights from Ontario to Atlanta with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

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3. Compare prices and book

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Cheapflights Tip: The best prices from Ontario to Atlanta Hartsfield-Jackson are usually found in February or November, booked 56 days in advance, depart on a Wednesday or Friday and return on a Tuesday

Cheap flight deals from Ontario to Atlanta

Cheapest flights from Ontario to Atlanta
Explore the most affordable flight options available from Ontario to Atlanta. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 10, 2026.

This Cheapflightsfares deal was found by Cheapflights users on 6/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/129:36 am
ONT
-
ATL
1 stop26h 59m
Frontier
Tue 8/186:03 am
ATL
-
ONT
1 stop14h 49m
Frontier
Deal found 6/5$288
This Kiwi.com deal was found by Cheapflights users on 6/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/189:32 am
ONT
-
ATL
1 stop10h 52m
Frontier
Wed 7/228:45 am
ATL
-
ONT
1 stop25h 47m
Frontier
Deal found 6/6$290
This Cheapflightsfares deal was found by Cheapflights users on 6/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/139:36 am
ONT
-
ATL
1 stop10h 48m
Frontier
Sun 8/1610:08 am
ATL
-
ONT
1 stop24h 24m
Frontier
Deal found 6/5$291
This Kiwi.com deal was found by Cheapflights users on 6/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/143:40 pm
ONT
-
ATL
2 stops28h 44m
Frontier
Tue 7/286:07 am
ATL
-
ONT
1 stop28h 25m
Frontier
Deal found 6/6$292
This Gotogate deal was found by Cheapflights users on 6/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/148:17 am
ONT
-
ATL
1 stop6h 39m
Frontier
Tue 7/148:30 pm
ATL
-
ONT
1 stop16h 34m
Frontier
Deal found 6/5$294
This Frontier deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/229:32 am
ONT
-
ATL
1 stop10h 52m
Frontier
Sat 7/2511:07 am
ATL
-
ONT
1 stop7h 07m
Frontier
Deal found 6/8$295
This CheapOair deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/79:32 am
ONT
-
ATL
1 stop25h 41m
Frontier
Fri 7/109:25 pm
ATL
-
ONT
1 stop13h 07m
Frontier
Deal found 6/8$296
This Cheapflightsfares deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/99:32 am
ONT
-
ATL
1 stop10h 52m
Frontier
Thu 7/167:40 am
ATL
-
ONT
1 stop29h 24m
Frontier
Deal found 6/9$297
This Frontier deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/189:32 am
ONT
-
ATL
1 stop10h 52m
Frontier
Sat 7/257:11 pm
ATL
-
ONT
1 stop15h 52m
Frontier
Deal found 6/8$298
This Kiwi.com deal was found by Cheapflights users on 6/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/28:17 am
ONT
-
ATL
1 stop8h 33m
Frontier
Tue 8/48:30 pm
ATL
-
ONT
1 stop16h 34m
Frontier
Deal found 6/6$299
This Frontier deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/59:36 am
ONT
-
ATL
1 stop10h 48m
Frontier
Wed 8/198:45 am
ATL
-
ONT
1 stop12h 07m
Frontier
Deal found 6/9$300

Find flight deals from Ontario to Atlanta

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Atlanta (ATL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated June 10, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$288
(Cheapflightsfares)

One-way from

$114
(Kiwi.com)

Popular in

April

Cheapest in

February

Average price

$469

Good round-trip deal

$439 or less

Good one-way deal

$233 or less
Provider with most accurate pricing for Ontario-Atlanta Hartsfield-Jackson flight deals.
Provider most trusted by Cheapflights users for Ontario-Atlanta Hartsfield-Jackson flights.
From Ontario to Atlanta Hartsfield-Jackson
One-way flight from Ontario to Atlanta Hartsfield-Jackson
Highest demand for flights based on searches. 8% potential increase in price ($39 potential increase over avg. RT price).
Cheapest flight prices on average. 1% potential price decrease ($5 potential savings vs. average RT price).
Average for round-trip flights in June 2026
Price to beat on a round-trip flight from Ontario to Atlanta Hartsfield-Jackson.
Price to beat on a one-way flight from Ontario to Atlanta Hartsfield-Jackson.

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario to Atlanta that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 10, 2026.
Use the filters below to find and compare flights from Ontario to Atlanta that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioAtlanta

ONT - ATL

ONTATL

Ontario

Thu 12/3

10:50 am-9:15 pm

1 stop7h 25m

Atlanta Hartsfield-Jackson

Mon 12/7

8:15 am-12:50 pm

1 stop7h 35m

$357
Quickest round-trip

OntarioAtlanta

ONT - ATL

ONTATL

Ontario

Wed 11/4

10:59 pm-6:08 am

Nonstop4h 09m

Atlanta Hartsfield-Jackson

Sun 11/8

4:35 pm-6:18 pm

Nonstop4h 43m

$439

OntarioAtlanta

ONT - ATL

ONTATL

Ontario

Thu 11/5

12:00 pm-7:14 pm

Nonstop4h 14m

Atlanta Hartsfield-Jackson

Sun 11/8

8:30 pm-10:14 pm

Nonstop4h 44m

$439

OntarioAtlanta

ONT - ATL

ONTATL

Ontario

Fri 9/11

1:00 pm-11:42 pm

1 stop7h 42m

Atlanta Hartsfield-Jackson

Sun 9/13

9:40 am-11:04 am

Nonstop4h 24m

$449

OntarioAtlanta

ONT - ATL

ONTATL

Ontario

Thu 12/3

6:00 am-4:59 pm

1 stop7h 59m

Atlanta Hartsfield-Jackson

Mon 12/7

4:35 pm-6:18 pm

Nonstop4h 43m

$449

OntarioAtlanta

ONT - ATL

ONTATL

Ontario

Wed 7/22

1:00 pm-11:58 pm

1 stop7h 58m

Atlanta Hartsfield-Jackson

Wed 7/29

9:21 am-10:38 am

Nonstop4h 17m

$449

OntarioAtlanta

ONT - ATL

ONTATL

Ontario

Fri 8/21

12:00 pm-7:30 pm

Nonstop4h 30m

Atlanta Hartsfield-Jackson

Mon 8/24

8:27 pm-9:52 pm

Nonstop4h 25m

$449

OntarioAtlanta

ONT - ATL

ONTATL

Ontario

Thu 7/9

1:00 pm-11:58 pm

1 stop7h 58m

Atlanta Hartsfield-Jackson

Sun 7/12

8:25 pm-9:50 pm

Nonstop4h 25m

$459
Cheapest one-way

OntarioAtlanta

ONT - ATL

ONTATL

Ontario

Tue 8/11

6:50 am-5:45 pm

2 stops7h 55m

$153

OntarioAtlanta

ONT - ATL

ONTATL

Ontario

Sat 12/5

12:00 pm-11:59 pm

1 stop8h 59m

$230

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/8

Showing 1-10 of 19 resultsSorted by cheapest first
1
2

Compare providers for flights from Ontario to Atlanta

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Ontario to Atlanta in June.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy2 starsTrust Score*3 stars
JustAirTicketPrice Accuracy-Trust Score*1 star
CheapflightsfaresPrice Accuracy2 starsTrust Score*1 star
CheapOairPrice Accuracy3 starsTrust Score*3 stars
Justfly.comPrice Accuracy3 starsTrust Score*3 stars
CheapfaremartPrice Accuracy-Trust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Ontario-Atlanta flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Ontario-Atlanta flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Ontario-Atlanta flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Ontario-Atlanta flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Ontario-Atlanta flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Ontario to Atlanta

Have a flexible travel schedule? Discover the best time to fly to Atlanta from Ontario with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Ontario to Atlanta

How far ahead should I book a flight from Ontario to Atlanta?

Booking 55 days in advance of your planned departure date is, on average, the best time to get cheap flights from Ontario to Atlanta. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Ontario to Atlanta?

Currently, February is the cheapest month in which you can book a flight from Ontario to Atlanta (average of $382). Flying from Ontario to Atlanta in April is currently the most expensive (average of $489). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from ONT to ATL?

Find hourly flight availability from Ontario to Atlanta. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 10, 2026.

When flying from Ontario to Atlanta, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

How much does it cost to fly round-trip from Ontario to Atlanta?

Reviews of airlines servicing Atlanta

Get insights into the airlines that provide service to Atlanta. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Atlanta. Reviews last updated June 10, 2026.
Read through reviews of airlines operating flights from Ontario to Atlanta, such as Southwest,Delta, andAmerican Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Food

7.0

Entertainment

7.5

Overall

7.9

Boarding

8.1

Comfort

8.0

Crew

8.6

Reviews

1 / 20
8.0
Excellent

La Tracimeldamarcos,Jun 2026

LAX - SLC

The second flight was not as comfortable as the first as we had to change planes to what seemed to be a slightly older aircraft. The seats weren’t as comfortable as the other plane. But it wasn’t bad.

Food

7.0

Entertainment

7.5

Overall

7.9

Boarding

8.1

Comfort

8.0

Crew

8.6

Reviews

1 / 20
8.0
Excellent

La Tracimeldamarcos,Jun 2026

LAX - SLC

The second flight was not as comfortable as the first as we had to change planes to what seemed to be a slightly older aircraft. The seats weren’t as comfortable as the other plane. But it wasn’t bad.

Food

7.0

Entertainment

7.5

Overall

7.9

Boarding

8.1

Comfort

8.0

Crew

8.6

Reviews

1 / 20
8.0
Excellent

La Tracimeldamarcos,Jun 2026

LAX - SLC

The second flight was not as comfortable as the first as we had to change planes to what seemed to be a slightly older aircraft. The seats weren’t as comfortable as the other plane. But it wasn’t bad.

Food

7.0

Entertainment

7.5

Overall

7.9

Boarding

8.1

Comfort

8.0

Crew

8.6

Reviews

1 / 20
8.0
Excellent

La Tracimeldamarcos,Jun 2026

LAX - SLC

The second flight was not as comfortable as the first as we had to change planes to what seemed to be a slightly older aircraft. The seats weren’t as comfortable as the other plane. But it wasn’t bad.

Food

7.0

Entertainment

7.5

Overall

7.9

Boarding

8.1

Comfort

8.0

Crew

8.6

Reviews

1 / 20
8.0
Excellent

La Tracimeldamarcos,Jun 2026

LAX - SLC

The second flight was not as comfortable as the first as we had to change planes to what seemed to be a slightly older aircraft. The seats weren’t as comfortable as the other plane. But it wasn’t bad.

Food

7.0

Entertainment

7.5

Overall

7.9

Boarding

8.1

Comfort

8.0

Crew

8.6

Reviews

1 / 20
8.0
Excellent

La Tracimeldamarcos,Jun 2026

LAX - SLC

The second flight was not as comfortable as the first as we had to change planes to what seemed to be a slightly older aircraft. The seats weren’t as comfortable as the other plane. But it wasn’t bad.

Related info for your journey

Find useful and relevant information for your journey from Ontario to Atlanta. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
  • What airports serve Atlanta from Ontario?

    If you're flying from Ontario to Atlanta, you'll hop on your plane at Ontario International Airport. Located two miles east of Downtown Ontario and roughly 38 miles east of Downtown Los Angeles, Ontario International Airport is one of the most used airports in California and its surrounding states. In Atlanta, your plane will touch down at Hartsfield-Jackson Atlanta International Airport. Commonly referred to as ATL, this airport usually has lots of human traffic as it is the second-busiest airport in the world. If you've not made arrangements to be picked up from this airport, worry not, as the airport allows for numerous cab drivers to pick up departing passengers. Given that the airport's professionals are quite knowledgeable, don't hesitate to contact them if you get lost or need assistance.

  • Which airlines fly directly to Atlanta from Ontario?

    If you'd like to fly directly to Atlanta from Ontario, you're in luck as Delta Air Lines offers nonstop Ontario to Atlanta flights. Delta Air Lines, just like most other airlines, often require that their passengers reach the airport 2h before their scheduled flight departs. The airlines demand that passengers arrive this early to check-in, have their luggage inspected, and sort out any issues that may need resolving before it's too late. As this is the case, if you book a Delta Air Lines flight, it's in your best interest to reach the airport 2h before your plane leaves.

  • What are the layover options between Ontario and Atlanta?

    There are a good number of layover options between Ontario and Atlanta. The most notable stop options include Salt Lake City, Denver, and Dallas. If you choose a flight that stops in Denver, you'll land at Denver International. Regarded as one of the most exceptional airports globally, this airport has several duty-free shops, top-notch restaurants, clean washrooms, and adequately large lounges. Given that it has all these features, it's safe to say that you'll have a good time at this airport. If you book a flight that will stop in Dallas, you'll land at Dallas/Fort Worth International Airport. Home to several boutiques, accomplished spas, and affordable restaurants, you'll greatly enjoy a layover at this airport.

  • Do I need a passport or visa to fly from Ontario to Atlanta?

    Flights from Ontario to Atlanta are domestic flights. For domestic flights, U.S. citizens don't need a visa. Instead, you can use documents such as a U.S. passport card, an accepted driver's license, a permanent resident card, or even a U.S. citizenship and immigration services employment authorization card. If you get to the airport and notice that you've misplaced the documents you require to be allowed to board, don't stress. Instead, call one of the TSA officers at the airport. When you do, you’ll be assisted accordingly.

  • What airports do I use to fly from Ontario to Atlanta?

    To fly from Ontario to Atlanta, you need to book a flight from Ontario (ONT) to Hartsfield-Jackson (ATL). Nonstop flights to Atlanta Hartsfield-Jackson from Ontario take 4h 06m on average. When it comes time to book airfare, you have a few options: there are 12 outbound flights from Ontario to Hartsfield-Jackson offered by 5 different airlines.

  • How popular is this Ontario to Atlanta flight route?

  • How long is the flight from Ontario to Atlanta?

    Airlines like Southwest and Delta fly from Ontario to Atlanta in about 4h 14m. The time it takes to get you to your destination can typically vary by up to 3h 11m. There are 1894 mi between Ontario and Atlanta. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines flying from Ontario to Atlanta round-trip?

    According to our current data, Frontier ($150), American Airlines ($230), and Delta ($319) offers the cheapest pricing from Ontario to Atlanta. Frontier is priced at 65% lower than the current average price of a flight leaving 3 months from now.

  • What are the cheapest airlines to fly from Ontario to Atlanta one-way?

    $85 is the cheapest one-way deal found within the past few days, from Frontier. You may also be able to find cheap deals on American Airlines and Southwest, with prices starting from $115 and $147, respectively.

  • What are the most reliable airlines from Ontario to Atlanta?

    No one likes to see their flight delayed. When booking a flight from Ontario to Atlanta consider choosing LATAM Airlines (93%), KLM (90%) or Delta (90%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from Ontario to Atlanta?

    On average you can expect to pay $838 for a flight from Ontario to Atlanta. The cheapest flight overall is $128 while the most popular route, (Ontario - Atlanta Hartsfield-Jackson) is currently priced at $297.

  • Where are the most common layover locations when flying from Ontario to Atlanta?

  • What are some popular things to do or see while on a layover in Las Vegas?

    If you're on a layover in Las Vegas and looking for things to do, consider visiting Fremont Street Experience, Stratosphere Tower, or The Colosseum at Caesars Palace. Travelers on a layover in Las Vegas can visit Fremont Street Experience, Stratosphere Tower, and The Colosseum at Caesars Palace, by traveling 5.9 mi, 4.3 mi, and 2.6 mi, respectively after landing at Las Vegas Harry Reid Intl. Those landing in Las Vegas looking to spend some time exploring during their layover can rent a car for about $60 per day.

  • Where are the least popular layover locations for Ontario to Atlanta flights?

  • Can I find deals for flights from Ontario to Atlanta that include hotel bookings?

    Yes. In addition to deals on Ontario to Atlanta flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Ontario to Atlanta?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to Atlanta.

  • Can I find deals for business class flights from Ontario to Atlanta?

    Yes. Cheapflights offers flight deals from Ontario to Atlanta by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Ontario to Atlanta?

    Currently, February is the cheapest month in which you can book a flight from Ontario to Atlanta (average of $382). Flying from Ontario to Atlanta in April is currently the most expensive (average of $489). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Atlanta?

Book flights to Atlanta if you plan to visit one of these locations
College Park
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Duluth
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Auburn
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Peachtree Corners
Gainesville
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Alternative routes for Ontario to Atlanta

See prices for flight routes from nearby airports that may be better suited for you.

Top 5 airlines flying from Ontario to Atlanta

Discover the top 5 airlines that operate flights from Ontario to Atlanta. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 10, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$150Average$272FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$230Average$418FlexibilityNo cancel feeOn-time71%
DeltaCheapest$319Average$524FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$342Average$447FlexibilityNo cancel feeOn-time63%
JetBlueCheapest$378Average$457FlexibilityNo cancel feeOn-time62%

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