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.

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 November 2025. The most frequent departure time is 7:00AM, with 83% of daily flights leaving at noon.

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

Flights via Phoenix (PHX) offer the lowest average round-trip price of $407.

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

Frontier is the most popular carrier operating from Ontario to Atlanta Hartsfield-Jackson

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

Dallas (DFW) was the most common stop: 50% of momondo users choosing 1-stop flights on this route connected there.

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 week?

87 flights are operational weekly from Ontario to Atlanta as of November 2025. The most popular departure day for this route is Tue, with 16% of flights per week taking off on this day.

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.

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.

$54 Cheap Flights from Ontario to Atlanta in 2025/26

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7:15 am - 11:10 pmONT-ATL

12h 55m2 stops

8:30 pm - 2:12 pmATL-ONT

20h 42m1 stop

$163Multiple Airlines

Find Deal

س, يناير 24 - ث, يناير 27

6:00 am - 5:30 amONT-ATL

20h 30m1 stop

3:11 pm - 11:59 pmATL-ONT

35h 48m2 stops

$164Frontier

Find Deal

ج, ديسمبر 26 - ر, ديسمبر 31

5:06 pm - 6:13 amONT-ATL

34h 07m2 stops

9:10 pm - 4:33 pmATL-ONT

22h 23m1 stop

$165Frontier

Find Deal

ن, ديسمبر 1 - خ, ديسمبر 4

10:12 pm - 6:48 pmONT-ATL

17h 36m2 stops

7:20 am - 2:25 pmATL-ONT

10h 05m1 stop

$166Frontier

Find Deal

خ, ديسمبر 4 - س, ديسمبر 6

3:20 pm - 7:31 amONT-ATL

13h 11m2 stops

7:20 am - 2:25 pmATL-ONT

10h 05m1 stop

$168Frontier

Find Deal

س, ديسمبر 6 - ن, ديسمبر 8

6:15 am - 6:13 amONT-ATL

20h 58m2 stops

7:35 am - 5:34 pmATL-ONT

12h 59m1 stop

$169Frontier

Find Deal

ر, ديسمبر 10 - ج, ديسمبر 12

12:30 pm - 7:58 amONT-ATL

16h 28m2 stops

7:09 am - 4:33 pmATL-ONT

12h 24m1 stop

$171Multiple Airlines

Find Deal

ث, ديسمبر 2 - ج, ديسمبر 5

5:06 pm - 8:41 pmONT-ATL

24h 35m1 stop

8:46 pm - 11:09 amATL-ONT

17h 23m2 stops

$172Frontier

Find Deal

ن, نوفمبر 24 - ر, ديسمبر 3

6:45 am - 7:47 pmONT-ATL

10h 02m1 stop

9:15 pm - 2:26 pmATL-ONT

20h 11m2 stops

$173Frontier

Find Deal

خ, يناير 1 - ج, يناير 9

6:15 am - 5:57 amONT-ATL

20h 42m1 stop

7:20 am - 2:25 pmATL-ONT

10h 05m1 stop

$176Frontier

Find Deal

ر, ديسمبر 3 - س, ديسمبر 6

Frontier flights from Ontario to Atlanta

Our best Frontier deals on Ontario to Atlanta flight tickets

Frontier

Dec 26

ONT6:00 amOntario

20h 30m

1 stop

ATL5:30 amAtlanta Hartsfield-Jackson

Dec 31

ATL3:11 pmAtlanta Hartsfield-Jackson

35h 48m

2 stops

ONT11:59 pmOntario

$164

Find similar

Frontier

Dec 1

ONT5:06 pmOntario

34h 07m

2 stops

ATL6:13 amAtlanta Hartsfield-Jackson

Dec 4

ATL9:10 pmAtlanta Hartsfield-Jackson

22h 23m

1 stop

ONT4:33 pmOntario

$165

Find similar

Frontier

Dec 4

ONT10:12 pmOntario

17h 36m

2 stops

ATL6:48 pmAtlanta Hartsfield-Jackson

Dec 6

ATL7:20 amAtlanta Hartsfield-Jackson

10h 05m

1 stop

ONT2:25 pmOntario

$166

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Fly from

Fly to

Route

Depart

Return

Price

OntarioAtlanta

ONT - ATL

ONTATL

Ontario

س 1/24

7:15 am-11:10 pm

2 stops12h 55m

Atlanta Hartsfield-Jackson

ث 1/27

8:30 pm-2:12 pm

1 stop20h 42m

$163

OntarioAtlanta

ONT - ATL

ONTATL

Ontario

ج 12/26

6:00 am-5:30 am

1 stop20h 30m

Atlanta Hartsfield-Jackson

ر 12/31

3:11 pm-11:59 pm

2 stops35h 48m

$164

OntarioAtlanta

ONT - ATL

ONTATL

Ontario

ن 12/1

5:06 pm-6:13 am

2 stops34h 07m

Atlanta Hartsfield-Jackson

خ 12/4

9:10 pm-4:33 pm

1 stop22h 23m

$165

OntarioAtlanta

ONT - ATL

ONTATL

Ontario

خ 12/4

10:12 pm-6:48 pm

2 stops17h 36m

Atlanta Hartsfield-Jackson

س 12/6

7:20 am-2:25 pm

1 stop10h 05m

$166

OntarioAtlanta

ONT - ATL

ONTATL

Ontario

س 12/6

3:20 pm-7:31 am

2 stops13h 11m

Atlanta Hartsfield-Jackson

ن 12/8

7:20 am-2:25 pm

1 stop10h 05m

$168

OntarioAtlanta

ONT - ATL

ONTATL

Ontario

ر 12/10

6:15 am-6:13 am

2 stops20h 58m

Atlanta Hartsfield-Jackson

ج 12/12

7:35 am-5:34 pm

1 stop12h 59m

$169

OntarioAtlanta

ONT - ATL

ONTATL

Ontario

ث 12/2

12:30 pm-7:58 am

2 stops16h 28m

Atlanta Hartsfield-Jackson

ج 12/5

7:09 am-4:33 pm

1 stop12h 24m

$171

OntarioAtlanta

ONT - ATL

ONTATL

Ontario

ن 11/24

5:06 pm-8:41 pm

1 stop24h 35m

Atlanta Hartsfield-Jackson

ر 12/3

8:46 pm-11:09 am

2 stops17h 23m

$172

OntarioAtlanta

ONT - ATL

ONTATL

Ontario

خ 1/1

6:45 am-7:47 pm

1 stop10h 02m

Atlanta Hartsfield-Jackson

ج 1/9

9:15 pm-2:26 pm

2 stops20h 11m

$173

OntarioAtlanta

ONT - ATL

ONTATL

Ontario

ر 12/3

6:15 am-5:57 am

1 stop20h 42m

Atlanta Hartsfield-Jackson

س 12/6

7:20 am-2:25 pm

1 stop10h 05m

$176

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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 November is also cheap. Prices for this month can be found on momondo for an average of $389.

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 $354. 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 $442.

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 $410 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 4% 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	$189
Fastest flight time	4h 06m
Direct flights	Every day
Airports in Atlanta	1 airport

The best one-way flight to Atlanta from Ontario in the past 72 hours is $189. The best round-trip flight deal from Ontario to Atlanta found on momondo in the last 72 hours is $337.

The fastest flight from Ontario to Atlanta takes 4h 06m

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 14m, 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 22.46% of all bookings. The subsequent popular models are Airbus A321neo at 17.90%, Airbus A318/A319/A320/A321 at 13.35%, and Airbus A320-100/200 at 3.92%.
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 33%, Southwest with 13%, 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 8,137 reviews	Search Spirit Airlines flights
Frontier	PriceFrom $149	Free Cancellation	Rating 5.8 3,109 reviews	Search Frontier flights
American Airlines	PriceFrom $242	Free Cancellation	Rating 7.2 11,051 reviews	Search American Airlines flights
Delta	PriceFrom $319	Free Cancellation	Rating 7.9 8,006 reviews	Search Delta flights
Southwest	PriceFrom $332	Free Cancellation	Rating 8.0 4,242 reviews	Search Southwest flights
United Airlines	PriceFrom $400	Free Cancellation	Rating 7.4 9,016 reviews	Search United Airlines 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 $544, 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 8,006 reviews.

Helen

Marietta

McDonough

Duluth

Blue Ridge

Warner Robins

Dahlonega

Lawrenceville

Stone Mountain

Norcross

Covington

Cartersville

Auburn

Gadsden

Newnan

Conyers

La Grange

Kennesaw

Gainesville

Lithonia

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 $54

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 12/24. 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

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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

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?

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 November is also cheap. Prices for this month can be found on momondo for an average of $389.

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 $354. 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 $442.

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 4% 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 is the most popular carrier 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?

Dallas (DFW) was the most common stop: 50% 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 Phoenix (PHX) offer the lowest average round-trip price of $407.

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 12 per day as of November 2025. The most frequent departure time is 7:00AM, with 83% of daily flights leaving at noon.

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

87 flights are operational weekly from Ontario to Atlanta as of November 2025. The most popular departure day for this route is Tue, with 16% 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