What days are nonstop flights available from Atlanta to Ontario?

Nonstop flights can be found on the following days: Sunday.

How popular is this Atlanta to Ontario flight route?

Flights from Atlanta Hartsfield-Jackson to Ontario have been viewed 15 times in the past calendar month.

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

On average 1 flight departs from Atlanta to Ontario per day. Morning (6am - Noon) - 100% of flight departures

How long is the flight from Atlanta to Ontario?

There are many flights that can get you from Atlanta to Ontario in 4h 26m. Fly via Undisclosed Carrier or Frontier to get the fastest option. Atlanta and Ontario are separated by a distance of 1906 mi. All flights are typically nonstop.

What are the cheapest airlines flying from Atlanta to Ontario round-trip?

According to our current data, Undisclosed Carrier ($126), and Frontier ($142) offers the cheapest pricing from Atlanta to Ontario. These flights start at 70% lower than the current average price 3 months from now.

What are the most popular airlines that fly from Atlanta to Ontario?

The most popular airlines flying from Atlanta to Ontario are American Airlines, Alaska Airlines and Delta. Something to consider prior to booking your flight.

What are the cheapest flights from Atlanta to Ontario?

Looking at all options, your cheapest flight can be booked for $59. While the most popular route (Atlanta Hartsfield-Jackson - Ontario) can be booked for $150 on average our data indicates $506 when flying from Atlanta to Ontario.

What are the most reliable airlines from Atlanta to Ontario?

The top 3 most reliable airlines when flying from Atlanta to Ontario are Delta (78%), Air France (42%) and Frontier (25%).

Can I find flights from Atlanta to Ontario for under $200 on Cheapflights?

Yes, there are multiple flights from Atlanta to Ontario for under $200. The cheapest flight booked recently is on Undisclosed Carrier for just $126, but on average you can expect to pay $172.

Are there nonstop flights from Atlanta to Ontario for under $200 on Cheapflights?

Cheapflights has at least 20 direct flights from Atlanta to Ontario under $200. A good price for a nonstop flight from Atlanta to Ontario is less than $175.

Are there last-minute flights available from Atlanta to Ontario for under $200?

There are currently 20+ open flights from Atlanta to Ontario within the next 7 days for less than $200.

Which airlines flying from Atlanta Hartsfield-Jackson to Ontario have flexible cancellations due to COVID-19?

Some of the carriers operating flights from Atlanta Hartsfield-Jackson to Ontario that may be offering flexible cancellation policies are Delta, Frontier, and American Airlines. Our site will let you filter for all airlines offering greater flexibility due to COVID-19.

What is the cheapest day to fly round-trip from Atlanta to Ontario?

Users have found that leaving on a Monday can be a cost-effective option. It’s possible to save up to 148% on your flight compared to booking on days when demand is much higher.

What is the cheapest month to fly from Atlanta to Ontario?

February is one of the best times of the year to fly to Ontario from Atlanta. Prices for February average $401 per person but you can even find prices for as low as $142. The most expensive prices can be found in the month of June. Opting for a February flight can save you 42% on your journey compared to booking in June

When is the cheapest time to fly from Atlanta to Ontario (ATL - ONT)?

Unlike at noon, when flights are generally more expensive, you can save up to 61% on flights from Atlanta to Ontario by exploring options for tickets in the morning.

What airports do I use to fly from Atlanta to Ontario?

To fly from Atlanta to Ontario, you need to book a flight from Hartsfield-Jackson (ATL) to Ontario (ONT). Nonstop flights to Ontario from Atlanta Hartsfield-Jackson take 4h 18m on average. When it comes time to book airfare, you have a few options: there are 5 outbound flights from Hartsfield-Jackson to Ontario offered by 6 different airlines.

What does ATL to ONT mean?

These are just IATA (International Air Transport Association) codes. They are used in aviation to identify and differentiate airports. That’s why a Atlanta Hartsfield-Jackson Airport to Ontario Airport flight would often be abbreviated as a ATL to ONT flight.

Flights from Atlanta, GA to Ontario, CA from $72

How to find the cheapest flight from Atlanta (ATL) to Ontario (ONT)

Popular in	July
Cheapest in	February
Round-trip from	$233
One-way from	$110

High demand for flights, 25% potential price rise

Search Deals

Best time to find cheap flights, 45% potential price drop

Search Deals

From Atlanta Hartsfield-Jackson to Ontario

Search Deals

One-way flight from Atlanta Hartsfield-Jackson to Ontario

Search Deals

ATL - ONT Price	$233 - $562
ONT Temperature	53.6 - 78.8 °F
ONT Rainfall	0.1 - 3.4 inches

ATL - ONT

Price

$233 - $562

ONT

Temperature

53.6 - 78.8 °F

ONT

Rainfall

0.1 - 3.4 inches

Users have found that booking a flight from Atlanta to Ontario at least 32 days early can save you up to 40% on average compared to booking a flight this week. If booking 32 days before your flight isn’t an option for you, users have found flights from Atlanta to Ontario for as little as $424 when booking for a departure date within the next two weeks. You can also check prices now. Some users have found airline tickets as low as $567 for flights departing within the next 3 days.

Cheap flights from Atlanta to Ontario in May, June 2023

The lowest fares we've come across on flights traveling from Atlanta to Ontario in May and June 2023. Check back regularly for other flight deals.

May 30 - Jun 6

ATL

Atlanta Hartsfield-Jackson

ONT

Ontario

1 stop

14h 01m

ONT

Ontario

ATL

Atlanta Hartsfield-Jackson

1 stop

10h 20m

$168

Frontier

Deal found 5/23

Jun 1 - Jun 3

ATL

Atlanta Hartsfield-Jackson

ONT

Ontario

1 stop

19h 19m

ONT

Ontario

ATL

Atlanta Hartsfield-Jackson

1 stop

17h 44m

$175

Undisclosed Carrier

Deal found 5/24

Jun 7 - Jun 7

ATL

Atlanta Hartsfield-Jackson

ONT

Ontario

Nonstop

4h 20m

ONT

Ontario

ATL

Atlanta Hartsfield-Jackson

1 stop

10h 38m

$178

Frontier

Deal found 5/23

May 30 - Jun 1

ATL

Atlanta Hartsfield-Jackson

ONT

Ontario

1 stop

14h 01m

ONT

Ontario

ATL

Atlanta Hartsfield-Jackson

1 stop

17h 40m

$183

Frontier

Deal found 5/24

Jun 2 - Jun 4

ATL

Atlanta Hartsfield-Jackson

ONT

Ontario

1 stop

22h 08m

ONT

Ontario

ATL

Atlanta Hartsfield-Jackson

1 stop

17h 44m

$185

Frontier

Deal found 5/24

Jun 6 - Jun 13

ATL

Atlanta Hartsfield-Jackson

ONT

Ontario

1 stop

14h 04m

ONT

Ontario

ATL

Atlanta Hartsfield-Jackson

Nonstop

4h 18m

$191

Frontier

Deal found 5/24

May 30 - Jun 13

ATL

Atlanta Hartsfield-Jackson

ONT

Ontario

1 stop

14h 01m

ONT

Ontario

ATL

Atlanta Hartsfield-Jackson

Nonstop

4h 18m

$193

Frontier

Deal found 5/24

Jun 2 - Jul 27

ATL

Atlanta Hartsfield-Jackson

ONT

Ontario

1 stop

22h 08m

ONT

Ontario

ATL

Atlanta Hartsfield-Jackson

1 stop

17h 47m

$195

Undisclosed Carrier

Deal found 5/24

Jun 13 - Jun 26

ATL

Atlanta Hartsfield-Jackson

ONT

Ontario

Nonstop

4h 20m

ONT

Ontario

ATL

Atlanta Hartsfield-Jackson

Nonstop

4h 18m

$198

Undisclosed Carrier

Deal found 5/24

Atlanta to Ontario 2023 flight deals

The lowest fares we've come across on flights traveling from Atlanta to Ontario in May and June 2023. Check back regularly for other flight deals.

Aug 16 - Aug 17

ATL

Atlanta Hartsfield-Jackson

ONT

Ontario

Nonstop

4h 26m

ONT

Ontario

ATL

Atlanta Hartsfield-Jackson

Nonstop

4h 34m

$126

Undisclosed Carrier

Deal found 5/24

Oct 7 - Oct 10

ATL

Atlanta Hartsfield-Jackson

ONT

Ontario

Nonstop

4h 48m

ONT

Ontario

ATL

Atlanta Hartsfield-Jackson

Nonstop

4h 15m

$142

Frontier

Deal found 5/24

Sep 9 - Sep 16

ATL

Atlanta Hartsfield-Jackson

ONT

Ontario

Nonstop

4h 32m

ONT

Ontario

ATL

Atlanta Hartsfield-Jackson

Nonstop

4h 22m

$150

Frontier

Deal found 5/24

Sep 5 - Sep 20

ATL

Atlanta Hartsfield-Jackson

ONT

Ontario

Nonstop

4h 26m

ONT

Ontario

ATL

Atlanta Hartsfield-Jackson

Nonstop

4h 22m

$160

Frontier

Deal found 5/24

May 30 - Jun 6

ATL

Atlanta Hartsfield-Jackson

ONT

Ontario

1 stop

14h 01m

ONT

Ontario

ATL

Atlanta Hartsfield-Jackson

1 stop

10h 20m

$168

Frontier

Deal found 5/23

Aug 2 - Aug 16

ATL

Atlanta Hartsfield-Jackson

ONT

Ontario

Nonstop

4h 26m

ONT

Ontario

ATL

Atlanta Hartsfield-Jackson

Nonstop

4h 34m

$169

Frontier

Deal found 5/24

Aug 30 - Sep 3

ATL

Atlanta Hartsfield-Jackson

ONT

Ontario

Nonstop

4h 26m

ONT

Ontario

ATL

Atlanta Hartsfield-Jackson

Nonstop

4h 33m

$170

Frontier

Deal found 5/24

Oct 7 - Oct 11

ATL

Atlanta Hartsfield-Jackson

ONT

Ontario

Nonstop

4h 48m

ONT

Ontario

ATL

Atlanta Hartsfield-Jackson

Nonstop

4h 15m

$171

Frontier

Deal found 5/24

Jul 20 - Sep 19

ATL

Atlanta Hartsfield-Jackson

ONT

Ontario

Nonstop

4h 26m

ONT

Ontario

ATL

Atlanta Hartsfield-Jackson

Nonstop

4h 22m

$174

Frontier

Deal found 5/24

Cheap Undisclosed Carrier flights from Atlanta to Ontario

Consider these cheap Undisclosed Carrier flights we've found departing from Atlanta to Ontario. It's recommended that users confirm their flight details before booking.

Aug 16 - Aug 17

ATL

Atlanta Hartsfield-Jackson

ONT

Ontario

Nonstop

4h 26m

ONT

Ontario

ATL

Atlanta Hartsfield-Jackson

Nonstop

4h 34m

$126

Undisclosed Carrier

Deal found 5/24

Jun 1 - Jun 3

ATL

Atlanta Hartsfield-Jackson

ONT

Ontario

1 stop

19h 19m

ONT

Ontario

ATL

Atlanta Hartsfield-Jackson

1 stop

17h 44m

$175

Undisclosed Carrier

Deal found 5/24

Jun 5 - Jun 10

ATL

Atlanta Hartsfield-Jackson

ONT

Ontario

1 stop

17h 51m

ONT

Ontario

ATL

Atlanta Hartsfield-Jackson

1 stop

17h 24m

$195

Undisclosed Carrier

Deal found 5/24

Jun 13 - Jun 26

ATL

Atlanta Hartsfield-Jackson

ONT

Ontario

Nonstop

4h 20m

ONT

Ontario

ATL

Atlanta Hartsfield-Jackson

Nonstop

4h 18m

$198

Undisclosed Carrier

Deal found 5/24

Jun 9 - Jun 16

ATL

Atlanta Hartsfield-Jackson

ONT

Ontario

Nonstop

4h 20m

ONT

Ontario

ATL

Atlanta Hartsfield-Jackson

Nonstop

4h 17m

$207

Undisclosed Carrier

Deal found 5/24

Jun 29 - Jul 7

ATL

Atlanta Hartsfield-Jackson

ONT

Ontario

Nonstop

4h 20m

ONT

Ontario

ATL

Atlanta Hartsfield-Jackson

Nonstop

4h 17m

$212

Undisclosed Carrier

Deal found 5/24

Jul 20 - Jul 23

ATL

Atlanta Hartsfield-Jackson

ONT

Ontario

Nonstop

4h 26m

ONT

Ontario

ATL

Atlanta Hartsfield-Jackson

Nonstop

4h 34m

$213

Undisclosed Carrier

Deal found 5/25

May 31 - Jun 4

ATL

Atlanta Hartsfield-Jackson

ONT

Ontario

1 stop

15h 18m

ONT

Ontario

ATL

Atlanta Hartsfield-Jackson

1 stop

17h 44m

$268

Undisclosed Carrier

Deal found 5/24

Cheap Frontier flights from Atlanta to Ontario

Some of the best deals we've found on Frontier flights traveling from Atlanta to Ontario. Check back soon if you're not seeing flights that suit your needs.

Oct 7 - Oct 10

ATL

Atlanta Hartsfield-Jackson

ONT

Ontario

Nonstop

4h 48m

ONT

Ontario

ATL

Atlanta Hartsfield-Jackson

Nonstop

4h 15m

$142

Frontier

Deal found 5/24

Sep 9 - Sep 16

ATL

Atlanta Hartsfield-Jackson

ONT

Ontario

Nonstop

4h 32m

ONT

Ontario

ATL

Atlanta Hartsfield-Jackson

Nonstop

4h 22m

$150

Frontier

Deal found 5/24

Sep 5 - Sep 20

ATL

Atlanta Hartsfield-Jackson

ONT

Ontario

Nonstop

4h 26m

ONT

Ontario

ATL

Atlanta Hartsfield-Jackson

Nonstop

4h 22m

$160

Frontier

Deal found 5/24

Jun 5 - Jun 6

ATL

Atlanta Hartsfield-Jackson

ONT

Ontario

1 stop

15h 00m

ONT

Ontario

ATL

Atlanta Hartsfield-Jackson

1 stop

7h 31m

$168

Frontier

Deal found 5/24

Aug 2 - Aug 16

ATL

Atlanta Hartsfield-Jackson

ONT

Ontario

Nonstop

4h 26m

ONT

Ontario

ATL

Atlanta Hartsfield-Jackson

Nonstop

4h 34m

$169

Frontier

Deal found 5/24

Aug 30 - Sep 3

ATL

Atlanta Hartsfield-Jackson

ONT

Ontario

Nonstop

4h 26m

ONT

Ontario

ATL

Atlanta Hartsfield-Jackson

Nonstop

4h 33m

$170

Frontier

Deal found 5/24

Oct 7 - Oct 11

ATL

Atlanta Hartsfield-Jackson

ONT

Ontario

Nonstop

4h 48m

ONT

Ontario

ATL

Atlanta Hartsfield-Jackson

Nonstop

4h 15m

$171

Frontier

Deal found 5/24

Jul 20 - Sep 19

ATL

Atlanta Hartsfield-Jackson

ONT

Ontario

Nonstop

4h 26m

ONT

Ontario

ATL

Atlanta Hartsfield-Jackson

Nonstop

4h 22m

$174

Frontier

Deal found 5/24

Oct 7 - Oct 11

ATL

Atlanta Hartsfield-Jackson

ONT

Ontario

Nonstop

4h 48m

ONT

Ontario

ATL

Atlanta Hartsfield-Jackson

1 stop

8h 34m

$175

Frontier

Deal found 5/24

Non-stop flights to Ontario from Atlanta

Take a look at some of the direct flights traveling from Atlanta to Ontario in the near future. Search for alternative flights from Atlanta to Ontario by utilizing the search form above.

Aug 16 - Aug 17

ATL

Atlanta Hartsfield-Jackson

ONT

Ontario

Nonstop

4h 26m

ONT

Ontario

ATL

Atlanta Hartsfield-Jackson

Nonstop

4h 34m

$126

Undisclosed Carrier

Deal found 5/24

Oct 7 - Oct 10

ATL

Atlanta Hartsfield-Jackson

ONT

Ontario

Nonstop

4h 48m

ONT

Ontario

ATL

Atlanta Hartsfield-Jackson

Nonstop

4h 15m

$142

Frontier

Deal found 5/24

Sep 9 - Sep 16

ATL

Atlanta Hartsfield-Jackson

ONT

Ontario

Nonstop

4h 32m

ONT

Ontario

ATL

Atlanta Hartsfield-Jackson

Nonstop

4h 22m

$150

Frontier

Deal found 5/24

Sep 5 - Sep 20

ATL

Atlanta Hartsfield-Jackson

ONT

Ontario

Nonstop

4h 26m

ONT

Ontario

ATL

Atlanta Hartsfield-Jackson

Nonstop

4h 22m

$160

Frontier

Deal found 5/24

Aug 2 - Aug 16

ATL

Atlanta Hartsfield-Jackson

ONT

Ontario

Nonstop

4h 26m

ONT

Ontario

ATL

Atlanta Hartsfield-Jackson

Nonstop

4h 34m

$169

Frontier

Deal found 5/24

Aug 30 - Sep 3

ATL

Atlanta Hartsfield-Jackson

ONT

Ontario

Nonstop

4h 26m

ONT

Ontario

ATL

Atlanta Hartsfield-Jackson

Nonstop

4h 33m

$170

Frontier

Deal found 5/24

Oct 7 - Oct 11

ATL

Atlanta Hartsfield-Jackson

ONT

Ontario

Nonstop

4h 48m

ONT

Ontario

ATL

Atlanta Hartsfield-Jackson

Nonstop

4h 15m

$171

Frontier

Deal found 5/24

Jul 20 - Sep 19

ATL

Atlanta Hartsfield-Jackson

ONT

Ontario

Nonstop

4h 26m

ONT

Ontario

ATL

Atlanta Hartsfield-Jackson

Nonstop

4h 22m

$174

Frontier

Deal found 5/24

Aug 24 - Aug 29

ATL

Atlanta Hartsfield-Jackson

ONT

Ontario

Nonstop

4h 26m

ONT

Ontario

ATL

Atlanta Hartsfield-Jackson

Nonstop

4h 34m

$176

Frontier

Deal found 5/23

Last minute flights from Atlanta to Ontario

Have a look at some of the last-minute flights available departing from Atlanta to Ontario. Tip: verify your flight details before completing your reservation.

May 30 - Jun 6

ATL

Atlanta Hartsfield-Jackson

ONT

Ontario

1 stop

14h 01m

ONT

Ontario

ATL

Atlanta Hartsfield-Jackson

1 stop

10h 20m

$168

Frontier

Deal found 5/23

Jun 1 - Jun 3

ATL

Atlanta Hartsfield-Jackson

ONT

Ontario

1 stop

19h 19m

ONT

Ontario

ATL

Atlanta Hartsfield-Jackson

1 stop

17h 44m

$175

Undisclosed Carrier

Deal found 5/24

May 30 - Jun 1

ATL

Atlanta Hartsfield-Jackson

ONT

Ontario

1 stop

14h 01m

ONT

Ontario

ATL

Atlanta Hartsfield-Jackson

1 stop

17h 40m

$183

Frontier

Deal found 5/24

Jun 2 - Jun 4

ATL

Atlanta Hartsfield-Jackson

ONT

Ontario

1 stop

22h 08m

ONT

Ontario

ATL

Atlanta Hartsfield-Jackson

1 stop

17h 44m

$185

Frontier

Deal found 5/24

May 30 - Jun 13

ATL

Atlanta Hartsfield-Jackson

ONT

Ontario

1 stop

14h 01m

ONT

Ontario

ATL

Atlanta Hartsfield-Jackson

Nonstop

4h 18m

$193

Frontier

Deal found 5/24

Jun 2 - Jul 27

ATL

Atlanta Hartsfield-Jackson

ONT

Ontario

1 stop

22h 08m

ONT

Ontario

ATL

Atlanta Hartsfield-Jackson

1 stop

17h 47m

$195

Undisclosed Carrier

Deal found 5/24

Jun 1 - Jun 10

ATL

Atlanta Hartsfield-Jackson

ONT

Ontario

1 stop

16h 28m

ONT

Ontario

ATL

Atlanta Hartsfield-Jackson

Nonstop

4h 17m

$198

Frontier

Deal found 5/25

Jun 1 - Jun 12

ATL

Atlanta Hartsfield-Jackson

ONT

Ontario

1 stop

11h 21m

ONT

Ontario

ATL

Atlanta Hartsfield-Jackson

1 stop

20h 22m

$201

Multiple Airlines

Deal found 5/24

May 30 - Jun 13

ATL

Atlanta Hartsfield-Jackson

ONT

Ontario

1 stop

14h 01m

ONT

Ontario

ATL

Atlanta Hartsfield-Jackson

1 stop

8h 47m

$208

Frontier

Deal found 5/24

One-way flights to Ontario from Atlanta

Take a look at some of the one-way flights we've detected from Atlanta to Ontario. Those needing a return flight from Atlanta to Ontario can use the search form above.

Aug 30

ATL

Atlanta Hartsfield-Jackson

ONT

Ontario

Nonstop

4h 26m

$72

Frontier

Deal found 5/24

Aug 23

ATL

Atlanta Hartsfield-Jackson

ONT

Ontario

Nonstop

4h 26m

$75

Frontier

Deal found 5/24

Jun 5

ATL

Atlanta Hartsfield-Jackson

ONT

Ontario

1 stop

24h 11m

$86

Frontier

Deal found 5/24

Jun 7

ATL

Atlanta Hartsfield-Jackson

ONT

Ontario

1 stop

14h 46m

$87

Frontier

Deal found 5/24

Jun 6

ATL

Atlanta Hartsfield-Jackson

ONT

Ontario

1 stop

19h 08m

$88

Frontier

Deal found 5/24

May 30

ATL

Atlanta Hartsfield-Jackson

ONT

Ontario

1 stop

14h 01m

$90

Frontier

Deal found 5/24

Jun 7

ATL

Atlanta Hartsfield-Jackson

ONT

Ontario

Nonstop

4h 20m

$91

Frontier

Deal found 5/24

Jul 26

ATL

Atlanta Hartsfield-Jackson

ONT

Ontario

Nonstop

4h 26m

$94

Frontier

Deal found 5/23

Jun 4

ATL

Atlanta Hartsfield-Jackson

ONT

Ontario

1 stop

19h 20m

$96

Frontier

Deal found 5/24

Find flights from Atlanta to Ontario within your budget

Fly from

Fly to

Budget

$126 - $198

Route

Depart

Return

Price

Atlanta Hartsfield-JacksonOntario

ATL - ONT

ATLONT

Atlanta Hartsfield-Jackson

Wed 8/16

Nonstop4h 26m

Ontario

Thu 8/17

Nonstop4h 34m

$126

Pick Dates

Atlanta Hartsfield-JacksonOntario

ATL - ONT

ATLONT

Atlanta Hartsfield-Jackson

Sat 10/7

Nonstop4h 48m

Ontario

Tue 10/10

Nonstop4h 15m

$142

Pick Dates

Atlanta Hartsfield-JacksonOntario

ATL - ONT

ATLONT

Atlanta Hartsfield-Jackson

Sat 9/9

Nonstop4h 32m

Ontario

Sat 9/16

Nonstop4h 22m

$150

Pick Dates

Atlanta Hartsfield-JacksonOntario

ATL - ONT

ATLONT

Atlanta Hartsfield-Jackson

Tue 9/5

Nonstop4h 26m

Ontario

Wed 9/20

Nonstop4h 22m

$160

Pick Dates

Atlanta Hartsfield-JacksonOntario

ATL - ONT

ATLONT

Atlanta Hartsfield-Jackson

Mon 6/5

1 stop15h 00m

Ontario

Tue 6/6

1 stop7h 31m

$168

Pick Dates

Atlanta Hartsfield-JacksonOntario

ATL - ONT

ATLONT

Atlanta Hartsfield-Jackson

Wed 8/2

Nonstop4h 26m

Ontario

Wed 8/16

Nonstop4h 34m

$169

Pick Dates

Atlanta Hartsfield-JacksonOntario

ATL - ONT

ATLONT

Atlanta Hartsfield-Jackson

Wed 8/30

Nonstop4h 26m

Ontario

Sun 9/3

Nonstop4h 33m

$170

Pick Dates

Atlanta Hartsfield-JacksonOntario

ATL - ONT

ATLONT

Atlanta Hartsfield-Jackson

Mon 6/5

1 stop17h 51m

Ontario

Sat 6/10

1 stop17h 24m

$195

Pick Dates

Atlanta Hartsfield-JacksonOntario

ATL - ONT

ATLONT

Atlanta Hartsfield-Jackson

Tue 6/13

Nonstop4h 20m

Ontario

Mon 6/26

Nonstop4h 18m

$198

Pick Dates

Flights are sorted by cheapest first

Deals found on 5/24

Reviews of Airlines Servicing Ontario

Get a feel of what it's like to fly with Undisclosed Carrier and Frontier from Atlanta to Ontario by reading reviews from past customers. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Frontier

5.9

Fair

642 reviews

Check prices

Reviews

1 / 10

They knowingly delayed from 7pm till 2am, then cancelled it! Not a dime comped for having to travel to San Juan and wait two days for availability of next flight. My second attempt with Frontier, I couldn’t imagine it was be worse than the last. Wrong again…

Frontier

5.9

Fair

642 reviews

Frontier

5.9

Fair

642 reviews

Check prices

Reviews

1 / 10

They knowingly delayed from 7pm till 2am, then cancelled it! Not a dime comped for having to travel to San Juan and wait two days for availability of next flight. My second attempt with Frontier, I couldn’t imagine it was be worse than the last. Wrong again…

Related info for your journey

Alternative routes for Atlanta to Ontario

Atlanta to San Diegofrom $120 pp

Atlanta to San Franciscofrom $190 pp

Atlanta to Los Angelesfrom $196 pp

Atlanta to San Josefrom $298 pp

Atlanta to Sacramentofrom $478 pp

Atlanta to Santa Anafrom $598 pp

Top 6 airlines flying from Atlanta to Ontario

Airline	Cheapest	Average	Flexibility	On-time	COVID-19 safety
Spirit Airlines	Cheapest$133	Average$253	FlexibilityNo cancel fee	On-time65%	COVID-19 safety	Search Spirit Airlines flights
Frontier	Cheapest$141	Average$227	FlexibilityNo cancel fee	On-time62%	COVID-19 safety	Search Frontier flights
United Airlines	Cheapest$211	Average$540	FlexibilityNo cancel fee	On-time69%	COVID-19 safety	Search United Airlines flights
American Airlines	Cheapest$312	Average$566	FlexibilityNo cancel fee	On-time71%	COVID-19 safety	Search American Airlines flights
Delta	Cheapest$358	Average$597	FlexibilityNo cancel fee	On-timeN/A	COVID-19 safety	Search Delta flights
Alaska Airlines	Cheapest$484	Average$595	FlexibilityNo cancel fee	On-time75%	COVID-19 safety	Search Alaska Airlines flights

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Hourly flight availability from Atlanta to Ontario

9%of flight departures	Early morningMidnight to 6 am
54%of flight departures	Morning6 am to noon
18%of flight departures	AfternoonNoon to 6 pm
19%of flight departures	Evening6 pm to midnight

Midnight

6 AM

Noon

6 PM

Weekly flight availability from Atlanta to Ontario

Sunday	7daily flights
Monday	7daily flights
Tuesday	5daily flights
Wednesday	3daily flights
Thursday	8daily flights
Friday	6daily flights
Saturday	4daily flights

Cheap flights from Atlanta to Ontario (ATL - ONT) from $72

This is the cheapest one-way flight price, found on 5/24. Prices may vary by date and flight preferences.

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The best prices from Atlanta Hartsfield-Jackson to Ontario are usually found in February or March, booked 32 days in advance, depart on a Tuesday or Wednesday and return on a Tuesday

How to find the cheapest flight from Atlanta (ATL) to Ontario (ONT)

All the information you need to plan the best ATL to ONT flight in 2023: compare Atlanta to Ontario flight prices with the expected peak season, weather and rainfall in Ontario.

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Cheap flights from Atlanta to Ontario in May, June 2023

The best prices found for ATL to ONT flights for May, June

The lowest fares we've come across on flights traveling from Atlanta to Ontario in May and June 2023. Check back regularly for other flight deals.

Atlanta to Ontario 2023 flight deals

Cheap flights to Ontario from Atlanta found for this year

The lowest fares we've come across on flights traveling from Atlanta to Ontario in May and June 2023. Check back regularly for other flight deals.

Cheap Undisclosed Carrier flights from Atlanta to Ontario

Consider these cheap Undisclosed Carrier flights we've found departing from Atlanta to Ontario. It's recommended that users confirm their flight details before booking.

Cheap Frontier flights from Atlanta to Ontario

Some of the best deals we've found on Frontier flights traveling from Atlanta to Ontario. Check back soon if you're not seeing flights that suit your needs.

Non-stop flights to Ontario from Atlanta

Save time with Atlanta to Ontario direct flight deals

Take a look at some of the direct flights traveling from Atlanta to Ontario in the near future. Search for alternative flights from Atlanta to Ontario by utilizing the search form above.

Last minute flights from Atlanta to Ontario

Late deals on return flights to Ontario from Atlanta, departing today and this week

Have a look at some of the last-minute flights available departing from Atlanta to Ontario. Tip: verify your flight details before completing your reservation.

One-way flights to Ontario from Atlanta

The cheapest one-way flights from Atlanta to Ontario

Take a look at some of the one-way flights we've detected from Atlanta to Ontario. Those needing a return flight from Atlanta to Ontario can use the search form above.

Find flights from Atlanta to Ontario within your budget

Use the slider to find flights from Atlanta to Ontario that fit your budget.

Reviews of Airlines Servicing Ontario

Get a feel of what it's like to fly with Undisclosed Carrier and Frontier from Atlanta to Ontario by reading reviews from past customers. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Useful info, stats and facts about Atlanta to Ontario flights.

What airports do I use to fly from Atlanta to Ontario?

Which airlines flying from Atlanta Hartsfield-Jackson to Ontario have flexible cancellations due to COVID-19?

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How popular is this Atlanta to Ontario flight route?

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

How long is the flight from Atlanta to Ontario?

What are the cheapest airlines flying from Atlanta to Ontario round-trip?

What are the most popular airlines that fly from Atlanta to Ontario?

What are the most reliable airlines from Atlanta to Ontario?

What are the cheapest flights from Atlanta to Ontario?

What does ATL to ONT mean?

Other flights from Atlanta

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Alternative routes for Atlanta to Ontario

See prices for flight routes from nearby airports that may be better suited for you.

Top 6 airlines flying from Atlanta to Ontario

The chart below displays the airlines Cheapflights users traveling from Atlanta to Ontario choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.

Popular flight searches

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Hourly flight availability from Atlanta to Ontario

See what time of day planes typically take off from Atlanta to Ontario

Weekly flight availability from Atlanta to Ontario

See how many times per day planes take to the skies headed from Atlanta to Ontario