Cheap flights from Atlanta to Ontario (ATL - ONT) from $56

This is the cheapest one-way flight price, found on 9/27. Prices may vary by date and flight preferences.
ATL — ONT
Oct 3 — Oct 101

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

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.

Popular in

July

Cheapest in

February

Round-trip from

$217

One-way from

$56
High demand for flights, 25% potential price rise
Best time to find cheap flights, 45% potential price drop
From Atlanta Hartsfield-Jackson to Ontario
One-way flight from Atlanta Hartsfield-Jackson to Ontario

ATL - LAX

Price

$217 - $494

LAX

Temperature

57.2 - 73.4 °F

LAX

Rainfall

0 - 3.4 inches

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

Users have found that leaving on a Sunday can be a cost-effective option. It’s possible to save up to 75% on your flight compared to booking on days when demand is much higher.

How far in advance should I book a flight from Atlanta to Ontario?

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.

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 in the afternoon, when flights are generally more expensive, you can save up to 50% on flights from Atlanta to Ontario by exploring options for tickets at noon.

Cheap Frontier flights from Atlanta to Ontario

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

Cheap American Airlines flights from Atlanta to Ontario

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

Cheap Atlanta to Ontario flights in September & October 2023

The best prices found for ATL to ONT flights for September, October
The lowest fares we've come across on flights traveling from Atlanta to Ontario in September and October 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 September and October 2023. Check back regularly for other flight deals.

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.

Atlanta to Ontario flights leaving soon

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.

Fly from

Any airport

Fly to

Any airport

Budget

$88 - $257

Route

Depart

Return

Price

Atlanta Hartsfield-JacksonOntario

ATL - ONT

ATLONT

Atlanta Hartsfield-Jackson

Tue 10/24

1 stop12h 25m

Ontario

Tue 10/31

1 stop17h 17m

Atlanta Hartsfield-JacksonOntario

ATL - ONT

ATLONT

Atlanta Hartsfield-Jackson

Wed 10/25

1 stop18h 09m

Ontario

Wed 11/1

1 stop7h 12m

Atlanta Hartsfield-JacksonOntario

ATL - ONT

ATLONT

Atlanta Hartsfield-Jackson

Wed 10/25

1 stop18h 09m

Ontario

Wed 11/1

1 stop7h 12m

Atlanta Hartsfield-JacksonOntario

ATL - ONT

ATLONT

Atlanta Hartsfield-Jackson

Wed 10/25

1 stop18h 09m

Ontario

Wed 11/1

1 stop7h 12m

Atlanta Hartsfield-JacksonOntario

ATL - ONT

ATLONT

Atlanta Hartsfield-Jackson

Mon 10/23

2 stops19h 33m

Ontario

Sat 10/28

1 stop17h 33m

Atlanta Hartsfield-JacksonOntario

ATL - ONT

ATLONT

Atlanta Hartsfield-Jackson

Fri 10/13

2 stops19h 06m

Ontario

Tue 10/17

1 stop17h 25m

Atlanta Hartsfield-JacksonOntario

ATL - ONT

ATLONT

Atlanta Hartsfield-Jackson

Tue 10/24

1 stop10h 24m

Ontario

Mon 10/30

2 stops11h 38m

Atlanta Hartsfield-JacksonOntario

ATL - ONT

ATLONT

Atlanta Hartsfield-Jackson

Wed 10/25

1 stop9h 59m

Ontario

Tue 10/31

2 stops12h 55m

Atlanta Hartsfield-JacksonOntario

ATL - ONT

ATLONT

Atlanta Hartsfield-Jackson

Wed 10/25

1 stop7h 11m

Ontario

Tue 10/31

1 stop6h 28m

Flights are sorted by cheapest first

Deals found on 9/27

Reviews of airlines servicing Ontario

Get a feel of what it's like to fly with Frontier, American Airlines and Delta 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.
Alaska Airlines
8.1
Very good
1,394 reviews

Crew

8.6

Comfort

8.0

Entertainment

7.2

Overall

8.1

Boarding

8.3

Food

7.2

Reviews

1 / 10

Really great service. Impressed by the pre flight address given to passengers by the captain. Great touch!

Alaska Airlines
8.1
Very good
1,394 reviews
Alaska Airlines
8.1
Very good
1,394 reviews

Crew

8.6

Comfort

8.0

Entertainment

7.2

Overall

8.1

Boarding

8.3

Food

7.2

Reviews

1 / 10

Really great service. Impressed by the pre flight address given to passengers by the captain. Great touch!

Delta
7.9
Good
3,023 reviews
Alaska Airlines
8.1
Very good
1,394 reviews

Crew

8.6

Comfort

8.0

Entertainment

7.2

Overall

8.1

Boarding

8.3

Food

7.2

Reviews

1 / 10

Really great service. Impressed by the pre flight address given to passengers by the captain. Great touch!

United Airlines
7.4
Good
1,890 reviews
Alaska Airlines
8.1
Very good
1,394 reviews

Crew

8.6

Comfort

8.0

Entertainment

7.2

Overall

8.1

Boarding

8.3

Food

7.2

Reviews

1 / 10

Really great service. Impressed by the pre flight address given to passengers by the captain. Great touch!

American Airlines
7.2
Good
2,635 reviews
Alaska Airlines
8.1
Very good
1,394 reviews

Crew

8.6

Comfort

8.0

Entertainment

7.2

Overall

8.1

Boarding

8.3

Food

7.2

Reviews

1 / 10

Really great service. Impressed by the pre flight address given to passengers by the captain. Great touch!

JetBlue
7.2
Good
781 reviews
Alaska Airlines
8.1
Very good
1,394 reviews

Crew

8.6

Comfort

8.0

Entertainment

7.2

Overall

8.1

Boarding

8.3

Food

7.2

Reviews

1 / 10

Really great service. Impressed by the pre flight address given to passengers by the captain. Great touch!

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?

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 27m 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.

Can I find flights from Atlanta to Ontario for under $100 on Cheapflights?

Yes, there are multiple flights from Atlanta to Ontario for under $100. The cheapest flight booked recently is on Frontier for just $88, but on average you can expect to pay $116.

Are there nonstop flights from Atlanta to Ontario for under $400 on Cheapflights?

Cheapflights has at least 20 direct flights from Atlanta to Ontario under $400. A good price for a nonstop flight from Atlanta to Ontario is less than $510.

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.

How popular is this Atlanta to Ontario flight route?

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

According to our current data, Frontier ($88), offers the cheapest pricing from Atlanta to Ontario. This flight start at 79% lower than the current average price 3 months from now.

What are the most popular airlines that fly 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 Air Europa (100%), ITA Airways (100%) and WestJet (100%).

What are the cheapest flights from Atlanta to Ontario?

Looking at all options, your cheapest flight can be booked for $61. While the most popular route (Atlanta Hartsfield-Jackson - Ontario) can be booked for $112 on average our data indicates $296 when flying from Atlanta to Ontario.

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.

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.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$133Average$229FlexibilityNo cancel feeOn-time65%
Search Spirit Airlines flights
FrontierCheapest$140Average$219FlexibilityNo cancel feeOn-time62%
Search Frontier flights
United AirlinesCheapest$184Average$519FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
DeltaCheapest$218Average$523FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
American AirlinesCheapest$256Average$535FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
Alaska AirlinesCheapest$328Average$595FlexibilityNo cancel feeOn-time75%
Search Alaska Airlines flights

Hourly flight availability from Atlanta to Ontario

See what time of day planes typically take off from Atlanta to Ontario
1%of flight departuresEarly morningMidnight to 6 am
37%of flight departuresMorning6 am to noon
25%of flight departuresAfternoonNoon to 6 pm
37%of flight departuresEvening6 pm to midnight
Midnight
6 AM
Noon
6 PM

Weekly flight availability from Atlanta to Ontario

See how many times per day planes take to the skies headed from Atlanta to Ontario
Sunday7daily flights
Monday7daily flights
Tuesday5daily flights
Wednesday3daily flights
Thursday8daily flights
Friday6daily flights
Saturday4daily flights

Fly with Cheapflights

What makes Cheapflights the go-to destination for all your flight needs

How does Cheapflights help users find flights from Atlanta to Ontario?

Cheapflights makes it easy to find Atlanta to Ontario flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

Why should you use Cheapflights to find cheap flight tickets from Atlanta to Ontario?

Millions of users choose and trust Cheapflights to book the best flight deals from Atlanta to Ontario for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

Can Cheapflights find flights from Atlanta to Ontario with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from Atlanta to Ontario, users can toggle the no change fees filter when performing a flight search.

Can Cheapflights notify me if prices for flights from Atlanta to Ontario become cheaper?

Yes, Cheapflights does offer price alerts on Atlanta to Ontario flights so you can book your travels when it’s right. The Price Alert feature is available after a flight search is performed above.

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