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

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

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 33% of people opting to fly with this airline when traveling to Atlanta. Keep in mind that there are 8 different airlines that fly to Atlanta on a routine basis, so you have a few additional options to choose from.

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

Dallas (DFW) 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.

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 March 2026. The most frequent departure time is 1:00PM, with 55% of daily flights leaving in the afternoon.

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

54 flights are operational weekly from Ontario to Atlanta as of March 2026. The most popular departure day for this route is Mon, with 15% 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 45m.

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

Denver (DEN) has the shortest average layover time for this route: 1h 28m.

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 March 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.

$67 Cheap Flights from Ontario to Atlanta in 2026

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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.

5:18 pm - 9:33 am

ONT

ATL

13h 15m

1 stop

9:21 pm - 11:55 pm

ATL

ONT

29h 34m

1 stop

$229Frontier

Wed, Apr 8 - Mon, Apr 13

7:40 pm - 9:33 am

ONT

ATL

10h 53m

1 stop

12:00 pm - 6:49 pm

ATL

ONT

9h 49m

1 stop

$230Frontier

Sun, Apr 12 - Wed, Apr 22

5:20 pm - 9:29 am

ONT

ATL

13h 09m

1 stop

9:14 pm - 3:57 pm

ATL

ONT

21h 43m

1 stop

$233Frontier

Mon, Mar 30 - Tue, Mar 31

8:26 am - 9:20 am

ONT

ATL

21h 54m

1 stop

3:29 pm - 9:15 am

ATL

ONT

20h 46m

1 stop

$234Frontier

Mon, May 18 - Wed, May 20

9:26 pm - 6:54 am

ONT

ATL

6h 28m

1 stop

7:08 pm - 8:04 am

ATL

ONT

15h 56m

1 stop

$236Frontier

Tue, Apr 7 - Sun, Apr 12

8:49 am - 6:05 am

ONT

ATL

18h 16m

1 stop

9:08 pm - 10:44 am

ATL

ONT

16h 36m

1 stop

$238Frontier

Mon, Apr 6 - Mon, Apr 13

6:20 am - 5:11 am

ONT

ATL

19h 51m

1 stop

8:51 pm - 11:55 pm

ATL

ONT

30h 04m

1 stop

$241Frontier

Mon, Apr 6 - Mon, May 4

6:10 pm - 9:38 pm

ONT

ATL

24h 28m

1 stop

8:51 pm - 11:55 pm

ATL

ONT

30h 04m

1 stop

$245Frontier

Thu, Apr 2 - Fri, Apr 17

7:29 pm - 7:07 am

ONT

ATL

8h 38m

1 stop

9:00 pm - 11:49 pm

ATL

ONT

29h 49m

1 stop

$248Frontier

Tue, May 19 - Mon, May 25

7:44 pm - 6:43 am

ONT

ATL

7h 59m

1 stop

5:40 pm - 11:58 pm

ATL

ONT

9h 18m

1 stop

$249Frontier

Tue, Apr 14 - Fri, Apr 24

Frontier flights from Ontario to Atlanta

Our best Frontier deals on Ontario to Atlanta flight tickets

Frontier

May 14

ONT12:59 amOntario

14h 23m

1 stop

ATL6:22 pmAtlanta Hartsfield-Jackson

May 19

ATL10:30 amAtlanta Hartsfield-Jackson

16h 25m

1 stop

ONT11:55 pmOntario

$229

Frontier

Apr 12

ONT7:40 pmOntario

10h 53m

1 stop

ATL9:33 amAtlanta Hartsfield-Jackson

Apr 22

ATL12:00 pmAtlanta Hartsfield-Jackson

9h 49m

1 stop

ONT6:49 pmOntario

$230

Frontier

Mar 30

ONT5:20 pmOntario

13h 09m

1 stop

ATL9:29 amAtlanta Hartsfield-Jackson

Mar 31

ATL9:14 pmAtlanta Hartsfield-Jackson

21h 43m

1 stop

ONT3:57 pmOntario

$233

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioAtlanta

ONT - ATL

ONTATL

Ontario

Wed 4/8

5:18 pm-9:33 am

1 stop13h 15m

Atlanta Hartsfield-Jackson

Mon 4/13

9:21 pm-11:55 pm

1 stop29h 34m

$229

OntarioAtlanta

ONT - ATL

ONTATL

Ontario

Sun 4/12

7:40 pm-9:33 am

1 stop10h 53m

Atlanta Hartsfield-Jackson

Wed 4/22

12:00 pm-6:49 pm

1 stop9h 49m

$230

OntarioAtlanta

ONT - ATL

ONTATL

Ontario

Mon 3/30

5:20 pm-9:29 am

1 stop13h 09m

Atlanta Hartsfield-Jackson

Tue 3/31

9:14 pm-3:57 pm

1 stop21h 43m

$233

OntarioAtlanta

ONT - ATL

ONTATL

Ontario

Mon 5/18

8:26 am-9:20 am

1 stop21h 54m

Atlanta Hartsfield-Jackson

Wed 5/20

3:29 pm-9:15 am

1 stop20h 46m

$234

OntarioAtlanta

ONT - ATL

ONTATL

Ontario

Tue 4/7

9:26 pm-6:54 am

1 stop6h 28m

Atlanta Hartsfield-Jackson

Sun 4/12

7:08 pm-8:04 am

1 stop15h 56m

$236

OntarioAtlanta

ONT - ATL

ONTATL

Ontario

Mon 4/6

8:49 am-6:05 am

1 stop18h 16m

Atlanta Hartsfield-Jackson

Mon 4/13

9:08 pm-10:44 am

1 stop16h 36m

$238

OntarioAtlanta

ONT - ATL

ONTATL

Ontario

Mon 4/6

6:20 am-5:11 am

1 stop19h 51m

Atlanta Hartsfield-Jackson

Mon 5/4

8:51 pm-11:55 pm

1 stop30h 04m

$241

OntarioAtlanta

ONT - ATL

ONTATL

Ontario

Thu 4/2

6:10 pm-9:38 pm

1 stop24h 28m

Atlanta Hartsfield-Jackson

Fri 4/17

8:51 pm-11:55 pm

1 stop30h 04m

$245

OntarioAtlanta

ONT - ATL

ONTATL

Ontario

Tue 5/19

7:29 pm-7:07 am

1 stop8h 38m

Atlanta Hartsfield-Jackson

Mon 5/25

9:00 pm-11:49 pm

1 stop29h 49m

$248

Quickest round-trip

OntarioAtlanta

ONT - ATL

ONTATL

Ontario

Tue 4/14

7:44 pm-6:43 am

1 stop7h 59m

Atlanta Hartsfield-Jackson

Fri 4/24

5:40 pm-11:58 pm

1 stop9h 18m

$249

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 February is, on average, the cheapest month to fly to Atlanta from Ontario, with most prices found around $383. If you aren’t able to travel to Atlanta during the month of February, then flying in May is also cheap. Prices for this month can be found on momondo for an average of $399.

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 $353. 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 $458.

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 $312. Flights to Atlanta are more costly in the morning, with an average ticket price of $434. 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 $349 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 March 2026, prices for Ontario to Atlanta flights are approximately 2% 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	$205
Fastest flight time	4h 03m
Direct flights	Every day
Airports in Atlanta	1 airport

The best one-way flight to Atlanta from Ontario in the past 72 hours is $205. The best round-trip flight deal from Ontario to Atlanta found on momondo in the last 72 hours is $384.

The fastest flight from Ontario to Atlanta takes 4h 03m

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).

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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 03m, 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 March 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 26.94% of all bookings. The subsequent popular models are Airbus A321neo at 17.69%, Boeing 737 MAX 8 at 4.16%, and Boeing 737 MAX 9 at 3.58%.
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 48% of the total bookings. Other popular airlines include Frontier with 31%, Southwest with 13%, and American Airlines with 7%.

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 $79	Free Cancellation	Rating 6.3 8,518 reviews	Search Spirit Airlines flights
Frontier	PriceFrom $150	Free Cancellation	Rating 5.7 3,035 reviews	Search Frontier flights
American Airlines	PriceFrom $286	Free Cancellation	Rating 7.1 11,435 reviews	Search American Airlines flights
Delta	PriceFrom $319	Free Cancellation	Rating 7.9 8,286 reviews	Search Delta flights
Southwest	PriceFrom $338	Free Cancellation	Rating 8.0 4,319 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 $499, 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 8,286 reviews.

Helen

Marietta

Duluth

McDonough

Warner Robins

Blue Ridge

Stone Mountain

Lawrenceville

Cartersville

Covington

Norcross

Auburn

Dahlonega

Newnan

Kennesaw

La Grange

Conyers

Gadsden

Lithonia

Douglasville

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 $67

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 5/12. 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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How to get the cheapest flight ticket from Ontario to 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 to Atlanta?

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

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

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

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

Which layover airport has the shortest connection time from Ontario 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

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

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?

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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