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

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

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

The number of flights available between Ontario and Atlanta is 7 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?

49 flights are operational weekly from Ontario to Atlanta as of November 2025. The most popular departure day for this route is Thu, with 29% of flights per week taking off on this day.

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.

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 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.

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.

$55 Cheap Flights from Ontario to Atlanta in 2025/26

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Enter your travel dates to find the best prices.

2:59 pm - 12:44 pmONT-ATL

18h 45m1 stop

9:10 pm - 9:17 pmATL-ONT

27h 07m2 stops

$165Frontier

Find Deal

lun., dic. 8 - dom., dic. 14

6:00 am - 6:13 amONT-ATL

21h 13m1 stop

7:55 am - 11:59 pmATL-ONT

19h 04m2 stops

$170Frontier

Find Deal

vie., feb. 6 - sáb., feb. 14

6:17 pm - 1:02 pmONT-ATL

15h 45m1 stop

8:07 pm - 5:42 pmATL-ONT

24h 35m1 stop

$172Frontier

Find Deal

jue., dic. 18 - sáb., ene. 3

12:30 pm - 9:25 amONT-ATL

17h 55m1 stop

7:46 am - 11:59 pmATL-ONT

19h 13m1 stop

$174Frontier

Find Deal

mar., dic. 16 - sáb., ene. 3

8:30 am - 9:01 pmONT-ATL

9h 31m1 stop

10:55 am - 5:02 pmATL-ONT

9h 07m1 stop

$176Frontier

Find Deal

mar., feb. 24 - jue., feb. 26

6:00 am - 9:12 pmONT-ATL

12h 12m2 stops

8:36 pm - 9:17 pmATL-ONT

27h 41m1 stop

$177Frontier

Find Deal

dom., ene. 25 - mar., ene. 27

2:05 pm - 9:18 amONT-ATL

16h 13m1 stop

9:00 am - 9:17 pmATL-ONT

15h 17m2 stops

$179Frontier

Find Deal

vie., dic. 12 - lun., dic. 15

6:15 am - 3:59 pmONT-ATL

6h 44m1 stop

11:48 am - 9:17 pmATL-ONT

12h 29m1 stop

$180Frontier

Find Deal

vie., dic. 5 - mié., dic. 10

3:31 pm - 6:02 amONT-ATL

11h 31m1 stop

9:40 pm - 2:26 pmATL-ONT

19h 46m2 stops

$182Multiple Airlines

Find Deal

jue., nov. 20 - lun., nov. 24

12:30 pm - 5:31 amONT-ATL

14h 01m2 stops

9:15 pm - 8:53 amATL-ONT

14h 38m1 stop

$205Multiple Airlines

Find Deal

mar., dic. 16 - mié., dic. 31

Frontier flights from Ontario to Atlanta

Our best Frontier deals on Ontario to Atlanta flight tickets

Frontier

Dec 8

ONT2:59 pmOntario

18h 45m

1 stop

ATL12:44 pmAtlanta Hartsfield-Jackson

Dec 14

ATL9:10 pmAtlanta Hartsfield-Jackson

27h 07m

2 stops

ONT9:17 pmOntario

$165

Find similar

Frontier

Feb 6

ONT6:00 amOntario

21h 13m

1 stop

ATL6:13 amAtlanta Hartsfield-Jackson

Feb 14

ATL7:55 amAtlanta Hartsfield-Jackson

19h 04m

2 stops

ONT11:59 pmOntario

$170

Find similar

Frontier

Dec 18

ONT6:17 pmOntario

15h 45m

1 stop

ATL1:02 pmAtlanta Hartsfield-Jackson

Jan 3

ATL8:07 pmAtlanta Hartsfield-Jackson

24h 35m

1 stop

ONT5:42 pmOntario

$172

Find similar

Fly from

Fly to

Route

Depart

Return

Price

OntarioAtlanta

ONT - ATL

ONTATL

Ontario

lun. 12/8

2:59 pm-12:44 pm

1 stop18h 45m

Atlanta Hartsfield-Jackson

dom. 12/14

9:10 pm-9:17 pm

2 stops27h 07m

$165

OntarioAtlanta

ONT - ATL

ONTATL

Ontario

vie. 2/6

6:00 am-6:13 am

1 stop21h 13m

Atlanta Hartsfield-Jackson

sáb. 2/14

7:55 am-11:59 pm

2 stops19h 04m

$170

OntarioAtlanta

ONT - ATL

ONTATL

Ontario

jue. 12/18

6:17 pm-1:02 pm

1 stop15h 45m

Atlanta Hartsfield-Jackson

sáb. 1/3

8:07 pm-5:42 pm

1 stop24h 35m

$172

OntarioAtlanta

ONT - ATL

ONTATL

Ontario

mar. 12/16

12:30 pm-9:25 am

1 stop17h 55m

Atlanta Hartsfield-Jackson

sáb. 1/3

7:46 am-11:59 pm

1 stop19h 13m

$174

OntarioAtlanta

ONT - ATL

ONTATL

Ontario

mar. 2/24

8:30 am-9:01 pm

1 stop9h 31m

Atlanta Hartsfield-Jackson

jue. 2/26

10:55 am-5:02 pm

1 stop9h 07m

$176

OntarioAtlanta

ONT - ATL

ONTATL

Ontario

dom. 1/25

6:00 am-9:12 pm

2 stops12h 12m

Atlanta Hartsfield-Jackson

mar. 1/27

8:36 pm-9:17 pm

1 stop27h 41m

$177

OntarioAtlanta

ONT - ATL

ONTATL

Ontario

vie. 12/12

2:05 pm-9:18 am

1 stop16h 13m

Atlanta Hartsfield-Jackson

lun. 12/15

9:00 am-9:17 pm

2 stops15h 17m

$179

OntarioAtlanta

ONT - ATL

ONTATL

Ontario

vie. 12/5

6:15 am-3:59 pm

1 stop6h 44m

Atlanta Hartsfield-Jackson

mié. 12/10

11:48 am-9:17 pm

1 stop12h 29m

$180

OntarioAtlanta

ONT - ATL

ONTATL

Ontario

jue. 11/20

3:31 pm-6:02 am

1 stop11h 31m

Atlanta Hartsfield-Jackson

lun. 11/24

9:40 pm-2:26 pm

2 stops19h 46m

$182

OntarioAtlanta

ONT - ATL

ONTATL

Ontario

mar. 12/16

12:30 pm-5:31 am

2 stops14h 01m

Atlanta Hartsfield-Jackson

mié. 12/31

9:15 pm-8:53 am

1 stop14h 38m

$205

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

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 $408 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 $318 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 13% 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 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 $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 05m

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 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 8,122 reviews	Search Spirit Airlines flights
Frontier	PriceFrom $149	Free Cancellation	Rating 5.8 3,116 reviews	Search Frontier flights
American Airlines	PriceFrom $242	Free Cancellation	Rating 7.2 11,040 reviews	Search American Airlines flights
Delta	PriceFrom $319	Free Cancellation	Rating 7.9 8,001 reviews	Search Delta flights
Southwest	PriceFrom $332	Free Cancellation	Rating 8.0 4,241 reviews	Search Southwest flights
United Airlines	PriceFrom $400	Free Cancellation	Rating 7.4 9,007 reviews	Search United Airlines flights

Delta Flights From Ontario to Atlanta
Delta operates around 9 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 8,001 reviews.

Helen

Marietta

McDonough

Duluth

Blue Ridge

Athens

Warner Robins

Dahlonega

Lawrenceville

Stone Mountain

Norcross

Covington

Cartersville

Auburn

Gadsden

Newnan

Conyers

La Grange

Kennesaw

Gainesville

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

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.

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Cheap flights from Ontario to Atlanta from $55

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 13% 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 7 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?

49 flights are operational weekly from Ontario to Atlanta as of November 2025. The most popular departure day for this route is Thu, with 29% 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