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

Denver (DEN) has the shortest average layover time for this route: 2h 00m.

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

The number of flights available between Ontario and Atlanta is 15 per day as of April 2026. The most frequent departure time is 12:00PM, with 44% of daily flights leaving in the afternoon.

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 35% 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 layover airport offers the lowest fares from Ontario to Atlanta?

Flights via Phoenix (PHX) offer the lowest average round-trip price of $441.

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

Phoenix (PHX) 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 Phoenix (PHX) have the shortest average one-way travel time: 7h 30m.

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

111 flights are operational weekly from Ontario to Atlanta as of April 2026. The most popular departure day for this route is Thu, with 19% of flights per week taking off on this day.

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

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

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 April 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.

$77 Cheap Flights from Ontario to Atlanta in 2026

1 adult

0 bags

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.

3:34 pm - 1:59 pm

ONT

ATL

19h 25m

1 stop

7:11 pm - 7:48 pm

ATL

ONT

27h 37m

1 stop

$299Frontier

Fri, Jul 17 - Mon, Jul 20

6:47 pm - 9:54 am

ONT

ATL

12h 07m

1 stop

10:54 am - 4:48 pm

ATL

ONT

8h 54m

1 stop

$300Frontier

Mon, Jun 15 - Sun, Jul 19

8:56 am - 9:35 pm

ONT

ATL

9h 39m

1 stop

6:00 am - 3:34 pm

ATL

ONT

12h 34m

1 stop

$301Frontier

Thu, Apr 30 - Sun, May 3

8:03 am - 7:55 pm

ONT

ATL

8h 52m

1 stop

2:32 pm - 7:11 pm

ATL

ONT

7h 39m

1 stop

$302Frontier

Thu, May 21 - Fri, May 29

5:43 pm - 11:34 pm

ONT

ATL

26h 51m

1 stop

8:45 am - 7:48 pm

ATL

ONT

14h 03m

2 stops

$303Frontier

Mon, Jun 29 - Tue, Jul 7

8:30 am - 7:55 pm

ONT

ATL

8h 25m

1 stop

2:32 pm - 7:11 pm

ATL

ONT

7h 39m

1 stop

$304Frontier

Tue, May 26 - Fri, May 29

8:03 am - 7:55 pm

ONT

ATL

8h 52m

1 stop

2:32 pm - 7:11 pm

ATL

ONT

7h 39m

1 stop

$305Frontier

Thu, May 21 - Fri, May 29

6:47 pm - 9:49 am

ONT

ATL

12h 02m

1 stop

7:40 am - 3:08 pm

ATL

ONT

10h 28m

2 stops

$306Frontier

Fri, Jun 12 - Wed, Jun 17

8:03 am - 7:55 pm

ONT

ATL

8h 52m

1 stop

2:32 pm - 7:11 pm

ATL

ONT

7h 39m

1 stop

$307Frontier

Sun, May 24 - Fri, May 29

6:00 am - 6:30 am

ONT

ATL

21h 30m

2 stops

11:11 am - 3:09 pm

ATL

ONT

6h 58m

1 stop

$310Frontier

Wed, Jul 1 - Wed, Jul 8

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Frontier flights from Ontario to Atlanta

Our best Frontier deals on Ontario to Atlanta flight tickets

Frontier

Jul 17

ONT3:34 pmOntario

19h 25m

1 stop

ATL1:59 pmAtlanta Hartsfield-Jackson

Jul 19

ATL6:03 amAtlanta Hartsfield-Jackson

14h 49m

1 stop

ONT5:52 pmOntario

$299

Frontier

Jun 15

ONT6:47 pmOntario

12h 07m

1 stop

ATL9:54 amAtlanta Hartsfield-Jackson

Jul 19

ATL10:54 amAtlanta Hartsfield-Jackson

8h 54m

1 stop

ONT4:48 pmOntario

$300

Frontier

Apr 30

ONT8:56 amOntario

9h 39m

1 stop

ATL9:35 pmAtlanta Hartsfield-Jackson

May 3

ATL6:00 amAtlanta Hartsfield-Jackson

12h 34m

1 stop

ONT3:34 pmOntario

$301

Alaska Airlines flights from Ontario to Atlanta

Our best Alaska Airlines deals on Ontario to Atlanta flight tickets

Alaska Airlines

May 27

ONT7:41 pmOntario

8h 39m

1 stop

ATL7:20 amAtlanta Hartsfield-Jackson

Jun 3

ATL6:26 pmAtlanta Hartsfield-Jackson

8h 30m

1 stop

ONT11:56 pmOntario

$335

Alaska Airlines

Oct 1

ONT12:10 pmOntario

8h 49m

1 stop

ATL11:59 pmAtlanta Hartsfield-Jackson

Oct 10

ATL4:01 pmAtlanta Hartsfield-Jackson

9h 38m

1 stop

ONT10:39 pmOntario

$349

Alaska Airlines

Apr 28

ONT3:26 pmOntario

11h 14m

1 stop

ATL5:40 amAtlanta Hartsfield-Jackson

May 5

ATL7:00 amAtlanta Hartsfield-Jackson

10h 32m

1 stop

ONT2:32 pmOntario

$455

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioAtlanta

ONT - ATL

ONTATL

Ontario

Fri 7/17

3:34 pm-1:59 pm

1 stop19h 25m

Atlanta Hartsfield-Jackson

Mon 7/20

7:11 pm-7:48 pm

1 stop27h 37m

$299

OntarioAtlanta

ONT - ATL

ONTATL

Ontario

Mon 6/15

6:47 pm-9:54 am

1 stop12h 07m

Atlanta Hartsfield-Jackson

Sun 7/19

10:54 am-4:48 pm

1 stop8h 54m

$300

OntarioAtlanta

ONT - ATL

ONTATL

Ontario

Thu 4/30

8:56 am-9:35 pm

1 stop9h 39m

Atlanta Hartsfield-Jackson

Sun 5/3

6:00 am-3:34 pm

1 stop12h 34m

$301

OntarioAtlanta

ONT - ATL

ONTATL

Ontario

Thu 5/21

8:03 am-7:55 pm

1 stop8h 52m

Atlanta Hartsfield-Jackson

Fri 5/29

2:32 pm-7:11 pm

1 stop7h 39m

$302

OntarioAtlanta

ONT - ATL

ONTATL

Ontario

Mon 6/29

5:43 pm-11:34 pm

1 stop26h 51m

Atlanta Hartsfield-Jackson

Tue 7/7

8:45 am-7:48 pm

2 stops14h 03m

$303

Quickest round-trip

OntarioAtlanta

ONT - ATL

ONTATL

Ontario

Tue 5/26

8:30 am-7:55 pm

1 stop8h 25m

Atlanta Hartsfield-Jackson

Fri 5/29

2:32 pm-7:11 pm

1 stop7h 39m

$304

OntarioAtlanta

ONT - ATL

ONTATL

Ontario

Thu 5/21

8:03 am-7:55 pm

1 stop8h 52m

Atlanta Hartsfield-Jackson

Fri 5/29

2:32 pm-7:11 pm

1 stop7h 39m

$305

OntarioAtlanta

ONT - ATL

ONTATL

Ontario

Fri 6/12

6:47 pm-9:49 am

1 stop12h 02m

Atlanta Hartsfield-Jackson

Wed 6/17

7:40 am-3:08 pm

2 stops10h 28m

$306

OntarioAtlanta

ONT - ATL

ONTATL

Ontario

Sun 5/24

8:03 am-7:55 pm

1 stop8h 52m

Atlanta Hartsfield-Jackson

Fri 5/29

2:32 pm-7:11 pm

1 stop7h 39m

$307

OntarioAtlanta

ONT - ATL

ONTATL

Ontario

Wed 7/1

6:00 am-6:30 am

2 stops21h 30m

Atlanta Hartsfield-Jackson

Wed 7/8

11:11 am-3:09 pm

1 stop6h 58m

$310

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 typical price of a round-trip flight between Ontario and Atlanta?

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 November is also cheap. Prices for this month can be found on momondo for an average of $398.

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 $361. 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 $461.

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 $306. Flights to Atlanta are more costly in the morning, with an average ticket price of $453. 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 $420 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 $372 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 April 2026, prices for Ontario to Atlanta flights are approximately 77% 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	$222
Fastest flight time	4h 10m
Direct flights	Every day
Airports in Atlanta	1 airport

The best one-way flight to Atlanta from Ontario in the past 72 hours is $222. The best round-trip flight deal from Ontario to Atlanta found on momondo in the last 72 hours is $470.

The fastest flight from Ontario to Atlanta takes 4h 10m

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 10m, 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 April 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 32.95% of all bookings. The subsequent popular models are Airbus A321neo at 17.23%, Boeing 737 MAX 8 at 4.39%, and Boeing 737-900 at 2.89%.
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 51% of the total bookings. Other popular airlines include Frontier with 30%, Southwest with 13%, and American Airlines with 5%.

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 8,622 reviews	Search Spirit Airlines flights
Frontier	PriceFrom $150	Free Cancellation	Rating 5.7 2,987 reviews	Search Frontier flights
American Airlines	PriceFrom $286	Free Cancellation	Rating 7.1 11,604 reviews	Search American Airlines flights
Delta	PriceFrom $319	Free Cancellation	Rating 7.9 8,424 reviews	Search Delta flights
Southwest	PriceFrom $338	Free Cancellation	Rating 8.0 4,330 reviews	Search Southwest flights

Delta Flights From Ontario to Atlanta
Delta operates around 22 flights from Ontario to Atlanta every week. The average price of these flights found in the last 72 hours has been $502, 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 8,406 reviews.

Helen

Marietta

Duluth

McDonough

Warner Robins

Blue Ridge

Stone Mountain

Lawrenceville

Cartersville

Norcross

Covington

Auburn

Kennesaw

Newnan

College Park

Dahlonega

La Grange

Lithonia

Gainesville

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

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.

Start using Trips

Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

1 adult

Sun 5/17

Sun 5/24

Email me momondo's favorite deals

By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States

Nearby airports

Airlines

Cabin classes

Other United States destinations

Other flights from Ontario

Complete your trip

Feeling lucky

Airports servicing Georgia

Albany Dougherty County Airport

Augusta Bush Field Airport

Brunswick Glynco Jetport Airport

Columbus Metropolitan Area Airport

Savannah/Hilton Head Airport

Valdosta Airport

Cheap flights from Ontario to Atlanta from $77

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 5/16. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Find the cheapest flights from Ontario to Atlanta

Cheap round-trip flights

Cheap one-way flights

Cheap last minute flights

Cheap direct flights

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Frontier flights from Ontario to Atlanta

Our best Frontier deals on Ontario to Atlanta flight tickets

Alaska Airlines flights from Ontario to Atlanta

Our best Alaska Airlines deals on Ontario to Atlanta flight tickets

momondo Fare Finder

Use the filters below to find and compare flights from Ontario to Atlanta that are best for you.

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 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

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

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.

Popular cities in the United States

Popular flights according to clicks in the last 7 days on momondo

Fly to other destinations from Ontario

According to popular flight searches on momondo this year

Complete your trip to Atlanta

Explore popular destinations other users love

According to popular flight searches on momondo this year