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 74% of daily flights leaving at noon.

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 39% 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.

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

Southwest and Alaska Airlines are the most popular carriers operating from Ontario to Atlanta Hartsfield-Jackson

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.

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.

$85 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.

8:17 am - 7:50 pm

ONT

ATL

8h 33m

1 stop

6:07 am - 11:50 pm

ATL

ONT

44h 43m

2 stops

$324Frontier

Thu, Aug 13 - Sun, Aug 16

11:20 am - 7:55 pm

ONT

ATL

5h 35m

1 stop

10:50 am - 6:35 pm

ATL

ONT

10h 45m

2 stops

$328Southwest

Sat, Nov 14 - Sat, Feb 27

9:33 am - 8:04 pm

ONT

ATL

7h 31m

1 stop

10:52 am - 4:22 pm

ATL

ONT

8h 30m

1 stop

$329Frontier

Sun, Aug 23 - Fri, Aug 28

9:40 am - 8:55 pm

ONT

ATL

8h 15m

2 stops

6:15 am - 11:25 am

ATL

ONT

8h 10m

2 stops

$333Southwest

Tue, Aug 25 - Mon, Aug 31

6:15 am - 3:55 pm

ONT

ATL

6h 40m

1 stop

7:03 am - 2:16 pm

ATL

ONT

10h 13m

1 stop

$382Multiple Airlines

Sat, Sep 19 - Tue, Sep 22

6:15 am - 5:31 pm

ONT

ATL

8h 16m

1 stop

6:25 pm - 9:51 am

ATL

ONT

18h 26m

1 stop

$382Multiple Airlines

Wed, Sep 16 - Mon, Sep 21

6:15 am - 10:15 pm

ONT

ATL

13h 00m

1 stop

7:49 am - 12:06 pm

ATL

ONT

7h 17m

1 stop

$437American Airlines

Wed, Sep 23 - Sun, Sep 27

2:22 pm - 11:46 pm

ONT

ATL

6h 24m

1 stop

8:05 am - 4:01 pm

ATL

ONT

10h 56m

1 stop

$437American Airlines

Fri, Nov 27 - Wed, Dec 2

12:22 pm - 7:30 pm

ONT

ATL

4h 08mnonstop

8:17 pm - 9:59 pm

ATL

ONT

4h 42mnonstop

$449Delta

Thu, Dec 10 - Sun, Dec 13

11:10 pm - 6:09 am

ONT

ATL

3h 59mnonstop

9:40 am - 11:27 am

ATL

ONT

4h 47mnonstop

$449Delta

Fri, Dec 11 - Sun, Jan 31

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Frontier flights from Ontario to Atlanta

Our best Frontier deals on Ontario to Atlanta flight tickets

Frontier

Aug 13

ONT8:17 amOntario

8h 33m

1 stop

ATL7:50 pmAtlanta Hartsfield-Jackson

Aug 16

ATL6:07 amAtlanta Hartsfield-Jackson

44h 43m

2 stops

ONT11:50 pmOntario

$324

Frontier

Aug 23

ONT9:33 amOntario

7h 31m

1 stop

ATL8:04 pmAtlanta Hartsfield-Jackson

Aug 30

ATL9:00 pmAtlanta Hartsfield-Jackson

13h 32m

1 stop

ONT7:32 amOntario

$329

Frontier

Aug 13

ONT8:17 amOntario

8h 33m

1 stop

ATL7:50 pmAtlanta Hartsfield-Jackson

Aug 16

ATL6:07 amAtlanta Hartsfield-Jackson

28h 25m

1 stop

ONT7:32 amOntario

$331

Southwest flights from Ontario to Atlanta

Our best Southwest deals on Ontario to Atlanta flight tickets

Southwest

Nov 14

ONT11:20 amOntario

5h 35m

1 stop

ATL7:55 pmAtlanta Hartsfield-Jackson

Feb 27

ATL10:50 amAtlanta Hartsfield-Jackson

10h 45m

2 stops

ONT6:35 pmOntario

$328

Southwest

Aug 27

ONT5:40 amOntario

8h 45m

2 stops

ATL5:25 pmAtlanta Hartsfield-Jackson

Aug 31

ATL6:15 amAtlanta Hartsfield-Jackson

8h 10m

2 stops

ONT11:25 amOntario

$333

Southwest

Oct 30

ONT8:20 amOntario

8h 35m

2 stops

ATL7:55 pmAtlanta Hartsfield-Jackson

Nov 2

ATL6:35 pmAtlanta Hartsfield-Jackson

8h 00m

2 stops

ONT11:35 pmOntario

$338

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioAtlanta

ONT - ATL

ONTATL

Ontario

Thu 8/13

8:17 am-7:50 pm

1 stop8h 33m

Atlanta Hartsfield-Jackson

Sun 8/16

6:07 am-11:50 pm

2 stops44h 43m

$324

OntarioAtlanta

ONT - ATL

ONTATL

Ontario

Sat 11/14

11:20 am-7:55 pm

1 stop5h 35m

Atlanta Hartsfield-Jackson

Sat 2/27

10:50 am-6:35 pm

2 stops10h 45m

$328

OntarioAtlanta

ONT - ATL

ONTATL

Ontario

Sun 8/23

9:33 am-8:04 pm

1 stop7h 31m

Atlanta Hartsfield-Jackson

Fri 8/28

10:52 am-4:22 pm

1 stop8h 30m

$329

OntarioAtlanta

ONT - ATL

ONTATL

Ontario

Tue 8/25

9:40 am-8:55 pm

2 stops8h 15m

Atlanta Hartsfield-Jackson

Mon 8/31

6:15 am-11:25 am

2 stops8h 10m

$333

OntarioAtlanta

ONT - ATL

ONTATL

Ontario

Sat 9/19

6:15 am-3:55 pm

1 stop6h 40m

Atlanta Hartsfield-Jackson

Tue 9/22

7:03 am-2:16 pm

1 stop10h 13m

$382

OntarioAtlanta

ONT - ATL

ONTATL

Ontario

Wed 9/16

6:15 am-5:31 pm

1 stop8h 16m

Atlanta Hartsfield-Jackson

Mon 9/21

6:25 pm-9:51 am

1 stop18h 26m

$382

OntarioAtlanta

ONT - ATL

ONTATL

Ontario

Wed 9/23

6:15 am-10:15 pm

1 stop13h 00m

Atlanta Hartsfield-Jackson

Sun 9/27

7:49 am-12:06 pm

1 stop7h 17m

$437

OntarioAtlanta

ONT - ATL

ONTATL

Ontario

Fri 11/27

2:22 pm-11:46 pm

1 stop6h 24m

Atlanta Hartsfield-Jackson

Wed 12/2

8:05 am-4:01 pm

1 stop10h 56m

$437

OntarioAtlanta

ONT - ATL

ONTATL

Ontario

Thu 12/10

12:22 pm-7:30 pm

Nonstop4h 08m

Atlanta Hartsfield-Jackson

Sun 12/13

8:17 pm-9:59 pm

Nonstop4h 42m

$449

Quickest round-trip

OntarioAtlanta

ONT - ATL

ONTATL

Ontario

Fri 12/11

11:10 pm-6:09 am

Nonstop3h 59m

Atlanta Hartsfield-Jackson

Sun 1/31

9:40 am-11:27 am

Nonstop4h 47m

$449

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 typical for flights on this route.

Typical prices usually range from $252 to $506.
The lowest price recently found on this route was $324.

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 $319. 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 Wednesday is the least expensive day to fly to Atlanta. Tickets to fly out on this day can be as low as $415. 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 $539.

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 $316. Flights to Atlanta are more costly in the morning, with an average ticket price of $512. 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 $446 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 $386 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 33% 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	$269
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 $269. The best round-trip flight deal from Ontario to Atlanta found on momondo in the last 72 hours is $448.

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 28.13% of all bookings. The subsequent popular models are Airbus A321neo at 13.52%, Airbus A320neo at 8.71%, and Airbus A318/A319/A320/A321 at 4.54%.
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 14%, 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 2,749 reviews	Search Frontier flights
American Airlines	PriceFrom $200	Free Cancellation	Rating 7.1 11,839 reviews	Search American Airlines flights
Delta	PriceFrom $322	Free Cancellation	Rating 7.8 8,485 reviews	Search Delta flights
Southwest	PriceFrom $340	Free Cancellation	Rating 8.0 4,228 reviews	Search Southwest flights
JetBlue	PriceFrom $378	Free Cancellation	Rating 7.1 3,023 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 $541, but momondo users have found Delta deals from Ontario to Atlanta from as low as $322 round-trip. Delta has been scored 7.8/10 in 8,486 reviews.

Helen

Marietta

Duluth

McDonough

Warner Robins

Blue Ridge

Stone Mountain

Cartersville

Norcross

Lawrenceville

Douglasville

Kennesaw

College Park

Conyers

La Grange

Gainesville

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 $85

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 10/28. 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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Frontier flights from Ontario to Atlanta

Our best Frontier deals on Ontario to Atlanta flight tickets

Southwest flights from Ontario to Atlanta

Our best Southwest deals on Ontario to Atlanta flight tickets

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See travel insights to Atlanta from

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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