How many flights depart from Ontario to Atlanta on average per week?

85 flights are operational weekly from Ontario to Atlanta as of July 2026. The most popular departure day for this route is Tue, with 16% of flights per week taking off on this day.

What airlines fly to Atlanta?

Frontier, Delta and American Airlines are the top three most popular airlines that fly to Atlanta from Ontario according to our data. Frontier is the first choice among our users, with 40% of people opting to fly with this airline when traveling to Atlanta. Keep in mind that there are 7 different airlines that fly to Atlanta on a routine basis, so you have a few additional options to choose from.

How many flights depart from Ontario to Atlanta on average per day?

The number of flights available between Ontario and Atlanta is 12 per day as of July 2026. The most frequent departure time is 7:00AM, with 75% of daily flights leaving at noon.

What is the cheapest airline that flies from Ontario to Atlanta Hartsfield-Jackson?

Frontier, Southwest, and Delta are the most popular carriers operating from Ontario to Atlanta Hartsfield-Jackson

When did momondo last update prices for flights from Ontario Airport to Atlanta Hartsfield-Jackson Airport?

Prices for flights from Ontario Airport to Atlanta Hartsfield-Jackson Airport are refreshed on a daily basis.

How many operators does momondo search for flights from Ontario Airport to Atlanta Hartsfield-Jackson Airport?

As of July 2026, there are 5 operators available to choose from for flights from Ontario Airport to Atlanta Hartsfield-Jackson Airport.

How old do you have to be to fly from Ontario Airport to Atlanta Hartsfield-Jackson Airport?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ontario Airport to Atlanta Hartsfield-Jackson Airport.

What documentation or ID do you need to fly to Atlanta Hartsfield-Jackson Airport?

The required travel and health documents for your Atlanta Hartsfield-Jackson Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Atlanta Hartsfield-Jackson Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$76 Cheap Flights from Ontario to Atlanta in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Ontario to Atlanta

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

8:35 am - 7:55 pm

ONT

ATL

8h 20m

2 stops

5:30 pm - 10:15 pm

ATL

ONT

7h 45m

2 stops

$333Southwest

Tue, Sep 29 - Thu, Oct 1

2:55 pm - 4:40 am

ONT

ATL

10h 45m

1 stop

6:10 am - 2:47 pm

ATL

ONT

11h 37m

1 stop

$334Frontier

Fri, Oct 9 - Mon, Oct 12

9:33 am - 8:04 pm

ONT

ATL

7h 31m

1 stop

1:18 pm - 8:54 pm

ATL

ONT

10h 36m

1 stop

$335Frontier

Mon, Sep 7 - Mon, Sep 14

9:32 am - 9:26 am

ONT

ATL

20h 54m

1 stop

7:57 am - 11:50 pm

ATL

ONT

18h 53m

1 stop

$336Frontier

Tue, Jul 28 - Thu, Aug 20

11:52 am - 1:50 pm

ONT

ATL

22h 58m

1 stop

8:53 pm - 10:04 am

ATL

ONT

16h 11m

1 stop

$341Frontier

Fri, Jul 31 - Sat, Aug 15

6:00 am - 3:49 pm

ONT

ATL

6h 49m

1 stop

9:06 pm - 9:27 pm

ATL

ONT

27h 21m

1 stop

$342Frontier

Sun, Aug 30 - Sun, Aug 30

9:36 am - 11:24 pm

ONT

ATL

10h 48m

1 stop

8:50 am - 7:01 pm

ATL

ONT

13h 11m

2 stops

$347Frontier

Thu, Aug 6 - Tue, Aug 18

11:47 am - 6:59 am

ONT

ATL

16h 12m

1 stop

7:11 pm - 8:03 am

ATL

ONT

15h 52m

1 stop

$348Frontier

Fri, Aug 14 - Sun, Aug 16

3:40 pm - 1:50 pm

ONT

ATL

19h 10m

1 stop

6:07 am - 7:32 am

ATL

ONT

28h 25m

1 stop

$349Frontier

Mon, Aug 3 - Fri, Aug 7

9:36 am - 11:24 pm

ONT

ATL

10h 48m

1 stop

6:07 am - 7:32 am

ATL

ONT

28h 25m

1 stop

$350Frontier

Sat, Aug 1 - Fri, Aug 7

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Southwest flights from Ontario to Atlanta

Our best Southwest deals on Ontario to Atlanta flight tickets

Southwest

Sep 29

ONT8:35 amOntario

8h 20m

2 stops

ATL7:55 pmAtlanta Hartsfield-Jackson

Oct 1

ATL5:30 pmAtlanta Hartsfield-Jackson

7h 45m

2 stops

ONT10:15 pmOntario

$333

Southwest

Aug 13

ONT5:40 amOntario

8h 45m

2 stops

ATL5:25 pmAtlanta Hartsfield-Jackson

Aug 20

ATL7:10 amAtlanta Hartsfield-Jackson

7h 50m

2 stops

ONT12:00 pmOntario

$351

Southwest

Aug 18

ONT9:40 amOntario

8h 15m

2 stops

ATL8:55 pmAtlanta Hartsfield-Jackson

Aug 25

ATL4:25 pmAtlanta Hartsfield-Jackson

7h 30m

2 stops

ONT8:55 pmOntario

$369

Frontier flights from Ontario to Atlanta

Our best Frontier deals on Ontario to Atlanta flight tickets

Frontier

Oct 9

ONT2:55 pmOntario

10h 45m

1 stop

ATL4:40 amAtlanta Hartsfield-Jackson

Oct 12

ATL6:10 amAtlanta Hartsfield-Jackson

11h 37m

1 stop

ONT2:47 pmOntario

$334

Frontier

Sep 7

ONT9:33 amOntario

7h 31m

1 stop

ATL8:04 pmAtlanta Hartsfield-Jackson

Sep 14

ATL1:18 pmAtlanta Hartsfield-Jackson

10h 36m

1 stop

ONT8:54 pmOntario

$335

Frontier

Aug 13

ONT11:47 amOntario

14h 15m

2 stops

ATL5:02 amAtlanta Hartsfield-Jackson

Aug 16

ATL10:08 amAtlanta Hartsfield-Jackson

24h 24m

1 stop

ONT7:32 amOntario

$336

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Quickest round-trip

OntarioAtlanta

ONT - ATL

ONTATL

Ontario

Tue 9/29

8:35 am-7:55 pm

2 stops8h 20m

Atlanta Hartsfield-Jackson

Thu 10/1

5:30 pm-10:15 pm

2 stops7h 45m

$333

OntarioAtlanta

ONT - ATL

ONTATL

Ontario

Fri 10/9

2:55 pm-4:40 am

1 stop10h 45m

Atlanta Hartsfield-Jackson

Mon 10/12

6:10 am-2:47 pm

1 stop11h 37m

$334

OntarioAtlanta

ONT - ATL

ONTATL

Ontario

Mon 9/7

9:33 am-8:04 pm

1 stop7h 31m

Atlanta Hartsfield-Jackson

Mon 9/14

1:18 pm-8:54 pm

1 stop10h 36m

$335

OntarioAtlanta

ONT - ATL

ONTATL

Ontario

Tue 7/28

9:32 am-9:26 am

1 stop20h 54m

Atlanta Hartsfield-Jackson

Thu 8/20

7:57 am-11:50 pm

1 stop18h 53m

$336

OntarioAtlanta

ONT - ATL

ONTATL

Ontario

Fri 7/31

11:52 am-1:50 pm

1 stop22h 58m

Atlanta Hartsfield-Jackson

Sat 8/15

8:53 pm-10:04 am

1 stop16h 11m

$341

OntarioAtlanta

ONT - ATL

ONTATL

Ontario

Sun 8/30

6:00 am-3:49 pm

1 stop6h 49m

Atlanta Hartsfield-Jackson

Sun 8/30

9:06 pm-9:27 pm

1 stop27h 21m

$342

OntarioAtlanta

ONT - ATL

ONTATL

Ontario

Thu 8/6

9:36 am-11:24 pm

1 stop10h 48m

Atlanta Hartsfield-Jackson

Tue 8/18

8:50 am-7:01 pm

2 stops13h 11m

$347

OntarioAtlanta

ONT - ATL

ONTATL

Ontario

Fri 8/14

11:47 am-6:59 am

1 stop16h 12m

Atlanta Hartsfield-Jackson

Sun 8/16

7:11 pm-8:03 am

1 stop15h 52m

$348

OntarioAtlanta

ONT - ATL

ONTATL

Ontario

Mon 8/3

3:40 pm-1:50 pm

1 stop19h 10m

Atlanta Hartsfield-Jackson

Fri 8/7

6:07 am-7:32 am

1 stop28h 25m

$349

OntarioAtlanta

ONT - ATL

ONTATL

Ontario

Sat 8/1

9:36 am-11:24 pm

1 stop10h 48m

Atlanta Hartsfield-Jackson

Fri 8/7

6:07 am-7:32 am

1 stop28h 25m

$350

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Ontario to Atlanta

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Other information

What is the typical price of a round-trip flight between Ontario and Atlanta?

Prices are currently low for flights on this route.

Typical prices usually range from $352 to $589.
The lowest price recently found on this route was $333.

What is the cheapest month to fly to Atlanta?

The month of August is, on average, the cheapest month to fly to Atlanta from Ontario, with most prices found around $340. If you aren’t able to travel to Atlanta during the month of August, then flying in February is also cheap. Prices for this month can be found on momondo for an average of $383.

What is the cheapest day to depart on your flight to Atlanta?

Our data shows that Friday is the least expensive day to fly to Atlanta. Tickets to fly out on this day can be as low as $412. Be sure to avoid booking your departure on a Sunday as prices are generally higher than usual. According to our data, the average ticket price to Atlanta on Sunday is $533.

What is the cheapest time of day to depart on your flight to Atlanta?

The cheapest time of day to fly to Atlanta is at noon when flights can be purchased for as low as $313. Flights to Atlanta are more costly in the morning, with an average ticket price of $510. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

What is the cheapest Ontario to Atlanta Hartsfield-Jackson flight route?

Fly from Ontario to Atlanta Hartsfield-Jackson for the best Ontario - Atlanta Hartsfield-Jackson flight prices

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

You are more likely to see cheaper flights to Atlanta from Ontario when booking weeks ahead of your departure date. In general, you can expect to find flights to Atlanta for around $447 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Atlanta from Ontario for as low as $389 on momondo.

What cabin class options are available on Ontario to Atlanta flights?

There are 4 cabin classes available to choose from on Ontario to Atlanta flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

How have Ontario to Atlanta flight prices changed over time?

As of July 2026, prices for Ontario to Atlanta flights are approximately 21% more expensive when compared to flights at the same time last year.

When to book flights from Ontario to Atlanta

Are you open to changing your travel dates? Check out the ideal times to fly from Ontario to Atlanta according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Ontario to Atlanta (ONT to ATL) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Ontario to Atlanta

Best Price Found	$259
Fastest flight time	4h 05m
Direct flights	Every day
Airports in Atlanta	1 airport

The best one-way flight to Atlanta from Ontario in the past 72 hours is $259. The best round-trip flight deal from Ontario to Atlanta found on momondo in the last 72 hours is $450.

The fastest flight from Ontario to Atlanta takes 4h 05m

Direct flights go from Ontario to Atlanta every day.

There is 1 airport in Atlanta. From Ontario there are direct flights to Atlanta Hartsfield-Jackson (ATL).

Search flight deals

Frequently asked questions about flying from Ontario to Atlanta

How far is Ontario to Atlanta Hartsfield-Jackson by plane?
A flight from Ontario to Atlanta Hartsfield-Jackson will travel around 1897.6 mi. Flights usually cover this in 4h 05m, depending on flying conditions and air traffic around both airports.
When did momondo last update prices for flights from Ontario Airport to Atlanta Hartsfield-Jackson Airport?
Prices for flights from Ontario Airport to Atlanta Hartsfield-Jackson Airport are refreshed on a daily basis.
How many operators does momondo search for flights from Ontario Airport to Atlanta Hartsfield-Jackson Airport?
As of July 2026, there are 5 operators available to choose from for flights from Ontario Airport to Atlanta Hartsfield-Jackson Airport.
How old do you have to be to fly from Ontario Airport to Atlanta Hartsfield-Jackson Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ontario Airport to Atlanta Hartsfield-Jackson Airport.
What documentation or ID do you need to fly to Atlanta Hartsfield-Jackson Airport?
The required travel and health documents for your Atlanta Hartsfield-Jackson Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Atlanta Hartsfield-Jackson Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular plane model from Ontario to Atlanta?
momondo data reveals that the most frequently booked plane model on the route from Ontario to Atlanta is Airbus A321-100/200, representing 29.30% of all bookings. The subsequent popular models are Airbus A321neo at 13.83%, Airbus A320neo at 9.01%, and Airbus A318/A319/A320/A321 at 4.55%.
What is the most popular airline from Ontario to Atlanta?
Based on momondo bookings for flights between Ontario and Atlanta, the leading airline is Delta, making up 56% of the total bookings. Other popular airlines include Frontier with 26%, Southwest with 13%, and American Airlines with 3%.

Best airlines flying from Ontario to Atlanta

Compare and see reviews for airlines that fly from Ontario to Atlanta with momondo

Airline	Rating	Free Cancellation	Price
Frontier	PriceFrom $150	Free Cancellation	Rating 5.6 2,770 reviews	Search Frontier flights
American Airlines	PriceFrom $200	Free Cancellation	Rating 7.1 11,842 reviews	Search American Airlines flights
Delta	PriceFrom $319	Free Cancellation	Rating 7.8 8,482 reviews	Search Delta flights
Southwest	PriceFrom $343	Free Cancellation	Rating 8.0 4,236 reviews	Search Southwest flights
JetBlue	PriceFrom $378	Free Cancellation	Rating 7.1 3,022 reviews	Search JetBlue flights

Delta Flights From Ontario to Atlanta
Delta operates around 16 flights from Ontario to Atlanta every week. The average price of these flights found in the last 72 hours has been $537, but momondo users have found Delta deals from Ontario to Atlanta from as low as $319 round-trip. Delta has been scored 7.8/10 in 8,481 reviews.

Helen

Marietta

Duluth

McDonough

Warner Robins

Blue Ridge

Stone Mountain

Cartersville

Lawrenceville

Norcross

Douglasville

Kennesaw

College Park

La Grange

Gainesville

Conyers

Covington

Newnan

Dahlonega

Auburn

Why use momondo?

Why should I use momondo to find a flight deal from Ontario to Atlanta?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Ontario to Atlanta. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Ontario to Atlanta with flexible booking policies on momondo?

momondo does allow users to show only those flights to Atlanta from Ontario which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Ontario to Atlanta?

momondo provides multiple filters to help you find the best flight to Atlanta from Ontario. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Ontario to Atlanta right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Atlanta, momondo offers a useful price alert feature which will track prices for flights to Atlanta from Ontario and alert you when they change.

An easier way to manage your Atlanta trip

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Airports servicing Georgia

Albany Dougherty County Airport

Augusta Bush Field Airport

Brunswick Glynco Jetport Airport

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Savannah/Hilton Head Airport

Valdosta Airport

Cheap flights from Ontario to Atlanta from $76

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to Atlanta departing on 9/14. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Southwest flights from Ontario to Atlanta

Our best Southwest deals on Ontario to Atlanta flight tickets

Frontier flights from Ontario to Atlanta

Our best Frontier deals on Ontario to Atlanta flight tickets

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

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How to get the cheapest flight ticket from Ontario to Atlanta

What is the typical price of a round-trip flight between Ontario and Atlanta?

What is the cheapest month to fly to Atlanta?

What is the cheapest day to depart on your flight to Atlanta?

What is the cheapest time of day to depart on your flight to Atlanta?

What is the cheapest Ontario to Atlanta Hartsfield-Jackson flight route?

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

What cabin class options are available on Ontario to Atlanta flights?

How have Ontario to Atlanta flight prices changed over time?

What is the cheapest airline that flies from Ontario to Atlanta Hartsfield-Jackson?

What airlines fly to Atlanta?

How many flights depart from Ontario to Atlanta on average per day?

How many flights depart from Ontario to Atlanta on average per week?

When to book flights from Ontario to Atlanta

Cheap Ontario to Atlanta (ONT to ATL) flight deals and tips

Best Price Found

Fastest flight time

Direct flights

Airports in Atlanta

Frequently asked questions about flying from Ontario to Atlanta

Best airlines flying from Ontario to Atlanta

Compare and see reviews for airlines that fly from Ontario to Atlanta with momondo

Traveling to a place near Atlanta?

Why use momondo?

An easier way to manage your Atlanta trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to the United States

Airports servicing Georgia

Fly your favorite airline to Atlanta

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

Cabin classes currently available on flights to Atlanta

List of cabin classes available on flights landing in Atlanta. Availability may vary depending on flight origin and airline.

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Popular flights according to clicks in the last 7 days on momondo

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