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

77 flights are operational weekly from Ontario to Atlanta as of November 2025. The most popular departure day for this route is Mon, with 17% of flights per week taking off on this day.

Which layover airport has the shortest travel time from Ontario to Atlanta?

Flights connecting via Denver (DEN) have the shortest average one-way travel time: 6h 00m.

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

The number of flights available between Ontario and Atlanta is 11 per day as of November 2025. The most frequent departure time is 7:00AM, with 50% of daily flights leaving at noon.

Which airport is the most popular layover for flights between Ontario and Atlanta?

Phoenix (PHX) was the most common stop: 40% of momondo users choosing 1-stop flights on this route connected there.

Which layover airport has the shortest connection time from Ontario to Atlanta?

Denver (DEN) has the shortest average layover time for this route: 0h 55m.

What airlines fly to Atlanta?

Frontier, Delta and Spirit 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 30% 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?

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

Which layover airport offers the lowest fares from Ontario to Atlanta?

Flights via Dallas (DFW) offer the lowest average round-trip price of $405.

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 November 2025, there are 6 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.

$58 Cheap Flights from Ontario to Atlanta in 2025/26

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Cheap round-trip flights

Enter your travel dates to find the best prices.

3:20 pm - 6:13 amONT-ATL

11h 53m1 stop

7:20 am - 3:06 pmATL-ONT

10h 46m1 stop

$245Frontier

Find Deal

Sat, Dec 6 - Sun, Dec 7

12:30 pm - 5:31 amONT-ATL

14h 01m2 stops

11:48 am - 9:17 pmATL-ONT

12h 29m1 stop

$248Multiple Airlines

Find Deal

Tue, Dec 9 - Wed, Dec 17

12:30 pm - 5:31 amONT-ATL

14h 01m2 stops

11:48 am - 9:17 pmATL-ONT

12h 29m1 stop

$249Multiple Airlines

Find Deal

Tue, Dec 9 - Wed, Dec 17

6:15 am - 6:48 pmONT-ATL

9h 33m2 stops

7:00 am - 9:17 pmATL-ONT

17h 17m1 stop

$250Multiple Airlines

Find Deal

Thu, Dec 11 - Wed, Dec 17

2:59 pm - 5:11 amONT-ATL

11h 12m1 stop

9:00 am - 9:17 pmATL-ONT

15h 17m2 stops

$251Frontier

Find Deal

Thu, Dec 11 - Mon, Dec 15

6:15 am - 3:59 pmONT-ATL

6h 44m1 stop

9:00 am - 9:17 pmATL-ONT

15h 17m2 stops

$252Frontier

Find Deal

Fri, Dec 12 - Mon, Dec 15

5:18 pm - 4:59 amONT-ATL

8h 41m1 stop

7:20 am - 2:25 pmATL-ONT

10h 05m1 stop

$253Frontier

Find Deal

Fri, Dec 12 - Sat, Dec 13

5:18 pm - 4:59 amONT-ATL

8h 41m1 stop

7:20 am - 2:25 pmATL-ONT

10h 05m1 stop

$254Frontier

Find Deal

Fri, Dec 12 - Sat, Dec 13

6:21 pm - 9:25 amONT-ATL

12h 04m1 stop

7:20 am - 2:25 pmATL-ONT

10h 05m1 stop

$255Frontier

Find Deal

Mon, Dec 8 - Sat, Dec 13

3:20 pm - 6:13 amONT-ATL

11h 53m1 stop

11:05 am - 9:17 pmATL-ONT

13h 12m2 stops

$256Multiple Airlines

Find Deal

Sat, Dec 13 - Tue, Dec 16

Frontier flights from Ontario to Atlanta

Our best Frontier deals on Ontario to Atlanta flight tickets

Frontier

Dec 6

ONT3:20 pmOntario

11h 53m

1 stop

ATL6:13 amAtlanta Hartsfield-Jackson

Dec 7

ATL7:20 amAtlanta Hartsfield-Jackson

10h 46m

1 stop

ONT3:06 pmOntario

$245

Find similar

Frontier

Dec 18

ONT6:17 pmOntario

8h 13m

1 stop

ATL5:30 amAtlanta Hartsfield-Jackson

Dec 23

ATL8:59 pmAtlanta Hartsfield-Jackson

23h 16m

1 stop

ONT5:15 pmOntario

$252

Find similar

Frontier

Dec 12

ONT5:18 pmOntario

8h 41m

1 stop

ATL4:59 amAtlanta Hartsfield-Jackson

Dec 13

ATL7:20 amAtlanta Hartsfield-Jackson

10h 05m

1 stop

ONT2:25 pmOntario

$253

Find similar

Fly from

Fly to

Route

Depart

Return

Price

OntarioAtlanta

ONT - ATL

ONTATL

Ontario

Sat 12/6

3:20 pm-6:13 am

1 stop11h 53m

Atlanta Hartsfield-Jackson

Sun 12/7

7:20 am-3:06 pm

1 stop10h 46m

$245

OntarioAtlanta

ONT - ATL

ONTATL

Ontario

Tue 12/9

12:30 pm-5:31 am

2 stops14h 01m

Atlanta Hartsfield-Jackson

Wed 12/17

11:48 am-9:17 pm

1 stop12h 29m

$248

OntarioAtlanta

ONT - ATL

ONTATL

Ontario

Tue 12/9

12:30 pm-5:31 am

2 stops14h 01m

Atlanta Hartsfield-Jackson

Wed 12/17

11:48 am-9:17 pm

1 stop12h 29m

$249

OntarioAtlanta

ONT - ATL

ONTATL

Ontario

Thu 12/11

6:15 am-6:48 pm

2 stops9h 33m

Atlanta Hartsfield-Jackson

Wed 12/17

7:00 am-9:17 pm

1 stop17h 17m

$250

OntarioAtlanta

ONT - ATL

ONTATL

Ontario

Thu 12/11

2:59 pm-5:11 am

1 stop11h 12m

Atlanta Hartsfield-Jackson

Mon 12/15

9:00 am-9:17 pm

2 stops15h 17m

$251

OntarioAtlanta

ONT - ATL

ONTATL

Ontario

Fri 12/12

6:15 am-3:59 pm

1 stop6h 44m

Atlanta Hartsfield-Jackson

Mon 12/15

9:00 am-9:17 pm

2 stops15h 17m

$252

OntarioAtlanta

ONT - ATL

ONTATL

Ontario

Fri 12/12

5:18 pm-4:59 am

1 stop8h 41m

Atlanta Hartsfield-Jackson

Sat 12/13

7:20 am-2:25 pm

1 stop10h 05m

$253

OntarioAtlanta

ONT - ATL

ONTATL

Ontario

Fri 12/12

5:18 pm-4:59 am

1 stop8h 41m

Atlanta Hartsfield-Jackson

Sat 12/13

7:20 am-2:25 pm

1 stop10h 05m

$254

OntarioAtlanta

ONT - ATL

ONTATL

Ontario

Mon 12/8

6:21 pm-9:25 am

1 stop12h 04m

Atlanta Hartsfield-Jackson

Sat 12/13

7:20 am-2:25 pm

1 stop10h 05m

$255

OntarioAtlanta

ONT - ATL

ONTATL

Ontario

Sat 12/13

3:20 pm-6:13 am

1 stop11h 53m

Atlanta Hartsfield-Jackson

Tue 12/16

11:05 am-9:17 pm

2 stops13h 12m

$256

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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

Layovers

Other information

What is the cheapest month to fly to Atlanta?

The month of April is, on average, the cheapest month to fly to Atlanta from Ontario, with most prices found around $355. If you aren’t able to travel to Atlanta during the month of April, then flying in September is also cheap. Prices for this month can be found on momondo for an average of $394.

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 $349. 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 $437.

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

The cheapest time of day to fly to Atlanta is in the evening when flights can be purchased for as low as $301. Flights to Atlanta are more costly in the morning, with an average ticket price of $444. 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 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 $411 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 $331 on momondo.

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

There are 4 cabin classes available to choose from on Ontario to Atlanta Hartsfield-Jackson 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 November 2025, prices for Ontario to Atlanta flights are approximately 3% cheaper 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	$227
Fastest flight time	4h 04m
Direct flights	Every day
Airports in Atlanta	1 airport

The best one-way flight to Atlanta from Ontario in the past 72 hours is $227. The best round-trip flight deal from Ontario to Atlanta found on momondo in the last 72 hours is $358.

The fastest flight from Ontario to Atlanta takes 4h 04m

Direct flights go from Ontario to Atlanta every day.

There is 1 airport near Atlanta: Atlanta Hartsfield-Jackson (ATL)

Search flight deals

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 6h 44m, 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 November 2025, there are 6 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 21.77% of all bookings. The subsequent popular models are Airbus A321neo at 19.98%, Airbus A318/A319/A320/A321 at 9.88%, and Airbus A320-100/200 at 5.05%.
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 42% of the total bookings. Other popular airlines include Frontier with 32%, Southwest with 14%, and American Airlines with 9%.

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
Spirit Airlines	PriceFrom $111	Free Cancellation	Rating 6.3 8,158 reviews	Search Spirit Airlines flights
Frontier	PriceFrom $148	Free Cancellation	Rating 5.8 3,099 reviews	Search Frontier flights
American Airlines	PriceFrom $242	Free Cancellation	Rating 7.2 11,038 reviews	Search American Airlines flights
United Airlines	PriceFrom $286	Free Cancellation	Rating 7.4 9,046 reviews	Search United Airlines flights
Delta	PriceFrom $319	Free Cancellation	Rating 7.9 7,998 reviews	Search Delta flights
Southwest	PriceFrom $332	Free Cancellation	Rating 8.0 4,254 reviews	Search Southwest flights

Delta Flights From Ontario to Atlanta
Delta operates around 12 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 7.9/10 in 7,998 reviews.

Helen

Marietta

McDonough

Duluth

Blue Ridge

Warner Robins

Lawrenceville

Dahlonega

Stone Mountain

Covington

Cartersville

Norcross

Auburn

Gadsden

Newnan

Conyers

Gainesville

Kennesaw

Lithonia

La Grange

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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Cheap flights from Ontario to Atlanta from $58

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 1/14. 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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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

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?

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 to Atlanta?

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

There are 4 cabin classes available to choose from on Ontario to Atlanta Hartsfield-Jackson 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 November 2025, prices for Ontario to Atlanta flights are approximately 3% cheaper when compared to flights at the same time last year.

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

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

What airlines fly to Atlanta?

Which airport is the most popular layover for flights between Ontario and Atlanta?

Phoenix (PHX) was the most common stop: 40% of momondo users choosing 1-stop flights on this route connected there.

Which layover airport offers the lowest fares from Ontario to Atlanta?

Flights via Dallas (DFW) offer the lowest average round-trip price of $405.

Which layover airport has the shortest travel time from Ontario to Atlanta?

Flights connecting via Denver (DEN) have the shortest average one-way travel time: 6h 00m.

Which layover airport has the shortest connection time from Ontario to Atlanta?

Denver (DEN) has the shortest average layover time for this route: 0h 55m.

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

The number of flights available between Ontario and Atlanta is 11 per day as of November 2025. The most frequent departure time is 7:00AM, with 50% of daily flights leaving at noon.

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

77 flights are operational weekly from Ontario to Atlanta as of November 2025. The most popular departure day for this route is Mon, with 17% of flights per week taking off on this day.

When to book flights from Ontario to Atlanta

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

Fastest flight time

Direct flights

Airports in Atlanta

How far is Ontario to Atlanta Hartsfield-Jackson by plane?

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

How many operators does momondo search 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?

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

What is the most popular plane model from Ontario to Atlanta?

What is the most popular airline 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

Delta Flights From Ontario to Atlanta

Traveling to a place near Atlanta?

Why use momondo?

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

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

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

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

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