Atlanta

$97+ 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 5/20. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — ATL
May 17 — May 241
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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

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

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Cheapflights Tip: The best prices from Ontario to Atlanta Hartsfield-Jackson are usually found in September or October, booked 19 days in advance, depart on a Wednesday or Friday and return on a Thursday

Cheap 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 May 12, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$204
(Flightnetwork)

One-way from

$97
(Trip.com)

Popular in

December

Cheapest in

September

Average price

$399

Good round-trip deal

$347 or less

Good one-way deal

$203 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 ($38 potential increase over avg. RT price).
Cheapest flight prices on average. 1% potential price decrease ($6 potential savings vs. average RT price).
Average for round-trip flights in May 2025
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.

Find 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 May 12, 2025.

This Flightnetwork deal was found by Cheapflights users on 5/11. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/245:15 pmONT - ATL
1 stop9h 55mFrontier
Sat 5/318:05 pmATL - ONT
1 stop16h 07mFrontier
Deal found 5/11$204
This Orbitz deal was found by Cheapflights users on 5/12. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/227:25 pmONT - ATL
1 stop9h 02mMultiple Airlines
Tue 10/286:29 pmATL - ONT
1 stop8h 21mMultiple Airlines
Deal found 5/12$336
This Hawaiian Airlines deal was found by Cheapflights users on 5/11. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/411:51 amONT - ATL
1 stop9h 08mHawaiian Airlines
Wed 6/115:56 pmATL - ONT
1 stop9h 01mHawaiian Airlines
Deal found 5/11$343
This Alaska Airlines deal was found by Cheapflights users on 5/11. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/66:00 amONT - ATL
1 stop8h 21mAlaska Airlines
Sat 9/137:00 amATL - ONT
1 stop10h 09mAlaska Airlines
Deal found 5/11$359
This Southwest deal was found by Cheapflights users on 5/11. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/56:15 amONT - ATL
1 stop10h 30mSouthwest
Wed 7/166:10 amATL - ONT
1 stop7h 15mSouthwest
Deal found 5/11$385
This Delta deal was found by Cheapflights users on 5/12. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/1210:05 pmONT - ATL
Nonstop4h 12mDelta
Sun 6/228:59 pmATL - ONT
Nonstop4h 26mDelta
Deal found 5/12$399
This American Airlines deal was found by Cheapflights users on 5/12. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/266:23 amONT - ATL
2 stops8h 17mAmerican Airlines
Thu 7/38:23 pmATL - ONT
1 stop6h 36mAmerican Airlines
Deal found 5/12$422
This United Airlines deal was found by Cheapflights users on 5/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/21:33 pmONT - ATL
1 stop6h 09mUnited Airlines
Fri 6/611:55 amATL - ONT
2 stops12h 09mUnited Airlines
Deal found 5/11$482

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 May 12, 2025.
Use the filters below to find and compare flights from Ontario to Atlanta that are best for you.

Fly from

Ontario

Fly to

Atlanta

Route

Depart

Return

Price

OntarioAtlanta

ONT - ATL

ONTATL

Ontario

Sat 5/24

5:15 pm-6:10 am

1 stop9h 55m

Atlanta Hartsfield-Jackson

Sat 5/31

8:05 pm-9:12 am

1 stop16h 07m

$204

OntarioAtlanta

ONT - ATL

ONTATL

Ontario

Wed 10/22

7:25 pm-7:27 am

1 stop9h 02m

Atlanta Hartsfield-Jackson

Tue 10/28

6:29 pm-11:50 pm

1 stop8h 21m

$336

OntarioAtlanta

ONT - ATL

ONTATL

Ontario

Wed 6/4

11:51 am-11:59 pm

1 stop9h 08m

Atlanta Hartsfield-Jackson

Wed 6/11

5:56 pm-11:57 pm

1 stop9h 01m

$343

OntarioAtlanta

ONT - ATL

ONTATL

Ontario

Sat 9/6

6:00 am-5:21 pm

1 stop8h 21m

Atlanta Hartsfield-Jackson

Sat 9/13

7:00 am-2:09 pm

1 stop10h 09m

$359

OntarioAtlanta

ONT - ATL

ONTATL

Ontario

Sat 7/5

6:15 am-7:45 pm

1 stop10h 30m

Atlanta Hartsfield-Jackson

Wed 7/16

6:10 am-10:25 am

1 stop7h 15m

$385

OntarioAtlanta

ONT - ATL

ONTATL

Ontario

Thu 6/12

10:05 pm-5:17 am

Nonstop4h 12m

Atlanta Hartsfield-Jackson

Sun 6/22

8:59 pm-10:25 pm

Nonstop4h 26m

$399

OntarioAtlanta

ONT - ATL

ONTATL

Ontario

Thu 6/26

6:23 am-5:40 pm

2 stops8h 17m

Atlanta Hartsfield-Jackson

Thu 7/3

8:23 pm-11:59 pm

1 stop6h 36m

$422

OntarioAtlanta

ONT - ATL

ONTATL

Ontario

Mon 6/2

1:33 pm-10:42 pm

1 stop6h 09m

Atlanta Hartsfield-Jackson

Fri 6/6

11:55 am-9:04 pm

2 stops12h 09m

$482

OntarioAtlanta

ONT - ATL

ONTATL

Ontario

Tue 5/20

1:08 pm-6:00 am

1 stop13h 52m

$97

OntarioAtlanta

ONT - ATL

ONTATL

Ontario

Wed 5/28

7:37 pm-6:10 am

1 stop7h 33m

$100

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/11

Showing 1-10 of 15 results
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 May.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*2 stars
PricelinePrice Accuracy2 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
CheapOairPrice Accuracy3 starsTrust Score*3 stars
CheapfaremartPrice Accuracy-Trust Score*1 star
GotogatePrice Accuracy3 starsTrust Score*2 stars
MytripPrice Accuracy3 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy3 starsTrust Score*2 stars
JustAirTicketPrice Accuracy-Trust Score*3 stars

*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 CheapOair to be most consistent on Cheapflights vs. CheapOair Users can find the same prices on Ontario-Atlanta flight deals on Cheapflights vs. CheapOair >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 CheapOair the most. CheapOair 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?

Use this chart to determine the optimal time to book a round-trip flight from Ontario to Atlanta. Price data was last updated on May 9, 2025.

Booking 19 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, August is the cheapest month in which you can book a flight from Ontario to Atlanta (average of $190). Flying from Ontario to Atlanta in June is currently the most expensive (average of $247). 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 May 12, 2025.

A simple way to save on the total cost of your ticket is to fly from Ontario to Atlanta in the afternoon. If you’re flexible enough to do this you can expect to save up to 52% on your trip compared to booking a flight in the morning.

What is the cheapest day to fly from Ontario to Atlanta?

Use this chart to determine the cheapest time to fly round-trip from Ontario to Atlanta. Price data was last updated on May 11, 2025.

Travelers seeking maximum savings on their Ontario to Atlanta flight should consider departing on Monday afternoons when fares are most often at their lowest. Monday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Ontario to Atlanta

Explore weekly flight availability from Ontario to Atlanta. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated May 12, 2025.

The most flights from ONT to ATL are scheduled on a Monday (9 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (6 on average).

Rainfall in Atlanta by month

Plan your trip to Atlanta by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Atlanta ranges from 3.4 - 5.3 inches per month. July is typically the wettest month, when rainfall can reach 5.3 in. April is typically the driest time to visit Atlanta when rainfall is around 3.4 in.

Temperature in Atlanta by month

Plan your trip to Atlanta by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Atlanta, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 42.8 F).

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 May 12, 2025.
To help decide which airline to fly from Ontario to Atlanta, see what other customers have to say about Alaska Airlines, Southwest and Delta. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Boarding

8.1

Entertainment

7.1

Food

7.1

Overall

8.0

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Boarding

8.1

Entertainment

7.1

Food

7.1

Overall

8.0

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Boarding

8.1

Entertainment

7.1

Food

7.1

Overall

8.0

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
8.0
Very good

Boarding

8.1

Entertainment

7.1

Food

7.1

Overall

8.0

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Boarding

8.1

Entertainment

7.1

Food

7.1

Overall

8.0

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Boarding

8.1

Entertainment

7.1

Food

7.1

Overall

8.0

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

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 09m on average. When it comes time to book airfare, you have a few options: there are 7 outbound flights from Ontario to Hartsfield-Jackson offered by 6 different airlines.

  • How popular is this Ontario to Atlanta flight route?

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

    According to our current data, Frontier ($204), Hawaiian Airlines ($343), and Alaska Airlines ($359) offers the cheapest pricing from Ontario to Atlanta. Frontier is priced at 48% 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?

    $100 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 United Airlines, with prices starting from $209 and $214, 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 Air France (91%), Virgin Atlantic (87%) or KLM (84%) 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 $709 for a flight from Ontario to Atlanta. The cheapest flight overall is $148 while the most popular route, (Ontario - Atlanta Hartsfield-Jackson) is currently priced at $220.

  • 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 Denver?

    If you're on a layover in Denver and looking for things to do, consider visiting Coors Field, Paramount Theatre, or Larimer Square. Travelers on a layover in Denver can visit Coors Field, Paramount Theatre, and Larimer Square, by traveling 18.4 mi, 18.6 mi, and 18.9 mi, respectively after landing at Denver Intl. Those landing in Denver looking to spend some time exploring during their layover can rent a car for about $43 per day.

  • What are some popular points of interest to see during 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, The Colosseum at Caesars Palace, or Fountains of Bellagio. Fremont Street Experience, The Colosseum at Caesars Palace and Fountains of Bellagio are located about 5.9 mi, 2.6 mi, and 2.3 mi, respectively from Las Vegas Harry Reid Intl if you are interested in checking them out. Those looking to explore during their layover in Las Vegas can rent a car from Las Vegas Harry Reid Intl for about $61 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, August is the cheapest month in which you can book a flight from Ontario to Atlanta (average of $190). Flying from Ontario to Atlanta in June is currently the most expensive (average of $247). 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 Ontario?

Book flights to Ontario if you plan to visit one of these locations
Duluth
College Park
McDonough
Auburn
Opelika
Marietta
Stone Mountain
Norcross
Morrow
Sandy Springs
Conyers
Lithonia
Acworth
Buford
Athens
Smyrna
Stockbridge
Lawrenceville
Douglasville
Kennesaw

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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 6 airlines flying from Ontario to Atlanta

Discover the top 6 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 May 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$111Average$246FlexibilityNo cancel feeOn-time65%
FrontierCheapest$144Average$253FlexibilityNo cancel feeOn-time62%
DeltaCheapest$257Average$492FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$258Average$414FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$286Average$494FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$353Average$416FlexibilityNo cancel feeOn-time63%

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