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$135+ Cheap flights from Atlanta (ATL) to Ontario

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/6. Fares are subject to change and may not be available on all flights or dates of travel.
ATL — YYZ
jun. 17 — jun. 241
mar. 6/17
mar. 6/24
1 adult, Economy
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Cheap flight deals from Atlanta to Ontario

Keep the following information in mind while searching for Atlanta to Ontario flight deals. Data was last updated junio 12, 2025.

Round-trip from

$257
(Mytrip)

One-way from

$135
(Kiwi.com)

Popular in

February

Cheapest in

March

Average price

$583

Good round-trip deal

$627 or less

Good one-way deal

$288 or less
From Atlanta Hartsfield-Jackson to Ontario
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One-way flight from Atlanta Hartsfield-Jackson to Ontario
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Highest demand for flights based on searches. 1% potential increase in price ($9 potential increase over avg. RT price).
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Cheapest flight prices on average. 0% potential price decrease ($6 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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Price to beat on a round-trip flight from Atlanta Hartsfield-Jackson to Ontario.
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Price to beat on a one-way flight from Atlanta Hartsfield-Jackson to Ontario.
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Find flight deals from Atlanta to Ontario

Cheapest flights from Atlanta to Ontario
Explore the most affordable flight options available from Atlanta to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on junio 12, 2025.

This Mytrip deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 7/105:20 amATL - YYZ
1 stop8h 45mMultiple Airlines
sáb. 7/126:30 amYYZ - ATL
1 stop10h 27mMultiple Airlines
Deal found 6/10$257
This Mytrip deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 7/88:30 amATL - YTZ
1 stop11h 32mMultiple Airlines
mar. 7/151:25 pmYTZ - ATL
1 stop21h 39mMultiple Airlines
Deal found 6/10$269
This oojo deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 9/192:00 pmATL - YYZ
1 stop7h 13mWestJet
lun. 9/228:00 pmYYZ - ATL
1 stop10h 50mWestJet
Deal found 6/12$302
This Kiwi.com deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 9/1110:02 amATL - YUL
1 stop7h 53mMultiple Airlines
sáb. 9/137:00 amYUL - ATL
2 stops8h 42mMultiple Airlines
Deal found 6/11$316
This Trip.com deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 7/226:51 amATL - YOW
1 stop8h 05mMultiple Airlines
mar. 7/294:10 pmYOW - ATL
1 stop7h 46mMultiple Airlines
Deal found 6/11$318
This oojo deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 7/182:00 pmATL - YOW
1 stop21h 31mWestJet
mié. 7/237:15 pmYOW - ATL
1 stop11h 39mWestJet
Deal found 6/12$322
This Sun Country Air deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Sun Country Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 7/246:36 pmATL - YYZ
1 stop17h 48mSun Country Air
jue. 7/3111:40 amYYZ - ATL
1 stop23h 46mSun Country Air
Deal found 6/10$362
This Delta deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 10/412:30 pmATL - YUL
1 stop8h 56mDelta
mié. 10/811:15 amYUL - ATL
1 stop9h 24mDelta
Deal found 6/10$388
This American Airlines deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 9/67:59 amATL - YYZ
1 stop10h 36mAmerican Airlines
mar. 9/91:15 pmYYZ - ATL
1 stop8h 49mAmerican Airlines
Deal found 6/12$436
This United Airlines deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 9/278:10 amATL - YYZ
1 stop10h 23mUnited Airlines
sáb. 10/47:00 amYYZ - ATL
1 stop10h 35mUnited Airlines
Deal found 6/10$446
This Air Canada deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 7/266:20 amATL - YSB
1 stop8h 57mAir Canada
sáb. 8/23:55 pmYSB - ATL
1 stop5h 41mAir Canada
Deal found 6/11$607
This Air Canada deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 7/178:55 amATL - YOW
1 stop4h 49mAir Canada
mar. 7/222:25 pmYOW - ATL
1 stop7h 20mAir Canada
Deal found 6/12$682

Cheapflights Fare Finder

Customize your flight search to find flights from Atlanta to Ontario that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated junio 12, 2025.
Use the filters below to find and compare flights from Atlanta to Ontario that are best for you.

Fly from

Atlanta

Fly to

Ontario

Route

Depart

Return

Price

AtlantaToronto

ATL - YYZ

ATLYYZ

Atlanta Hartsfield-Jackson

jue. 7/10

5:20 am-2:05 pm

1 stop8h 45m

Toronto Pearson Intl

sáb. 7/12

6:30 am-4:57 pm

1 stop10h 27m

$257

AtlantaToronto

ATL - YTZ

ATLYTZ

Atlanta Hartsfield-Jackson

mar. 7/8

8:30 am-8:02 pm

1 stop11h 32m

Toronto Island

mar. 7/15

1:25 pm-11:04 am

1 stop21h 39m

$269

AtlantaOttawa

ATL - YOW

ATLYOW

Atlanta Hartsfield-Jackson

mar. 7/22

6:51 am-2:56 pm

1 stop8h 05m

Ottawa

mar. 7/29

4:10 pm-11:56 pm

1 stop7h 46m

$318

AtlantaMontreal

ATL - YUL

ATLYUL

Atlanta Hartsfield-Jackson

mar. 7/8

10:41 am-5:55 pm

1 stop7h 14m

Montreal Pierre Elliott Trudeau Intl

mar. 7/15

6:35 pm-11:56 pm

1 stop5h 21m

$330

AtlantaToronto

ATL - YYZ

ATLYYZ

Atlanta Hartsfield-Jackson

jue. 7/24

6:36 pm-12:24 pm

1 stop17h 48m

Toronto Pearson Intl

jue. 7/31

11:40 am-11:26 am

1 stop23h 46m

$362

AtlantaMontreal

ATL - YUL

ATLYUL

Atlanta Hartsfield-Jackson

mar. 8/5

11:30 am-9:28 pm

1 stop9h 58m

Montreal Pierre Elliott Trudeau Intl

mié. 8/13

11:00 am-11:18 pm

1 stop12h 18m

$402

AtlantaToronto

ATL - YYZ

ATLYYZ

Atlanta Hartsfield-Jackson

jue. 9/4

2:00 pm-9:13 pm

1 stop7h 13m

Toronto Pearson Intl

dom. 9/7

10:30 pm-1:10 pm

1 stop14h 40m

$406

AtlantaToronto

ATL - YYZ

ATLYYZ

Atlanta Hartsfield-Jackson

sáb. 9/6

7:59 am-6:35 pm

1 stop10h 36m

Toronto Pearson Intl

mar. 9/9

1:15 pm-10:04 pm

1 stop8h 49m

$436

AtlantaOttawa

ATL - YOW

ATLYOW

Atlanta Hartsfield-Jackson

sáb. 8/30

8:30 am-2:56 pm

1 stop30h 26m

Ottawa

sáb. 9/6

7:15 pm-6:50 am

1 stop11h 35m

$468

AtlantaMontreal

ATL - YUL

ATLYUL

Atlanta Hartsfield-Jackson

sáb. 6/21

2:00 pm-4:55 pm

Nonstop2h 55m

Montreal Pierre Elliott Trudeau Intl

dom. 6/22

9:20 am-12:13 pm

Nonstop2h 53m

$497

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/11

Showing 1-10 of 32 results
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Best time to book a flight from Atlanta to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Atlanta with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Atlanta to Ontario

What is the cheapest month to book a flight from Atlanta to Region of Ontario?

Currently, January is the cheapest month in which you can book a flight from Atlanta to Region of Ontario (average of $243). Flying from Atlanta to Region of Ontario in July is currently the most expensive (average of $353). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from ATL to ON?

Find hourly flight availability from Atlanta to Ontario. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated junio 12, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Atlanta to Region of Ontario as you normally would.

Weekly flight availability from Atlanta to Region of Ontario

Explore weekly flight availability from Atlanta to Ontario. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated junio 12, 2025.

The most flights from ATL to CAON are scheduled on a Thursday (26 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (9 on average).

Rainfall in Ontario by month

Plan your trip to Ontario by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Region of Ontario ranges from 2.0 - 3.3 inches per month. June is typically the wettest month, when rainfall can reach 3.3 in. February is typically the driest time to visit Region of Ontario when rainfall is around 2.0 in.

Temperature in Ontario by month

Plan your trip to Ontario by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Region of Ontario, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 69.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 21.2 F).

Reviews of airlines servicing Ontario

Get insights into the airlines that provide service to Ontario. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Ontario. Reviews last updated junio 12, 2025.
Read through reviews of airlines operating flights from Atlanta to Ontario, such as Delta, United Airlines and American Airlines. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,946 reviews

Overall

8.0

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
2.0
Mediocre

Santiago,Apr 2024

ATL - JNB

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.
Delta
8.0
Very good
7,946 reviews
Delta
8.0
Very good
7,946 reviews

Overall

8.0

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
2.0
Mediocre

Santiago,Apr 2024

ATL - JNB

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.
United Airlines
7.4
Good
8,790 reviews
Delta
8.0
Very good
7,946 reviews

Overall

8.0

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
2.0
Mediocre

Santiago,Apr 2024

ATL - JNB

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,946 reviews

Overall

8.0

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
2.0
Mediocre

Santiago,Apr 2024

ATL - JNB

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.
WestJet
7.2
Good
2,868 reviews
Delta
8.0
Very good
7,946 reviews

Overall

8.0

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
2.0
Mediocre

Santiago,Apr 2024

ATL - JNB

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.
Air Canada
7.1
Good
9,537 reviews
Delta
8.0
Very good
7,946 reviews

Overall

8.0

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
2.0
Mediocre

Santiago,Apr 2024

ATL - JNB

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

Related info for your journey

Find useful and relevant information for your journey from Atlanta to Ontario. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Atlanta to Ontario?

    Most people fly from Atlanta Hartsfield-Jackson (ATL) if they book a flight from Atlanta to Ontario. Atlanta Hartsfield-Jackson is conveniently located just 8.2 mi from Atlanta’s city center.

  • What are the cheapest airlines to fly from Atlanta to Region of Ontario one-way?

    One-way options have recently been found by users for as low as $153 on Sun Country Air. Other airlines that offer cheap prices include WestJet from $164 and United Airlines from $220 one-way.

  • What are the most popular routes from Atlanta to Region of Ontario?

    Most travelers choose Atlanta Hartsfield-Jackson - Toronto Pearson Intl, Atlanta Hartsfield-Jackson - Montreal Pierre Elliott Trudeau Intl or Atlanta Hartsfield-Jackson - Toronto Island when deciding on the best route from Atlanta to Region of Ontario.

  • What are the most reliable airlines from Atlanta to Region of Ontario?

    Before booking your flight to Region of Ontario from Atlanta, check out the most reliable airlines to get you to your destination on time: Jazz (88%), United Airlines (86%), Air Canada( 80%).

  • What are the cheapest flights from Atlanta to Region of Ontario?

    Looking at all options, your cheapest flight can be booked for $283. While the most popular route (Atlanta Hartsfield-Jackson - Toronto Pearson Intl) can be booked for $257 on average our data indicates $2,156 when flying from Atlanta to Region of Ontario.

  • Can I find deals for flights from Atlanta to Ontario that include hotel bookings?

    Yes. In addition to deals on Atlanta to Ontario flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Atlanta to Ontario?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Atlanta to Ontario.

  • Can I find deals for business class flights from Atlanta to Ontario?

    Yes. Cheapflights offers flight deals from Atlanta to Ontario by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Atlanta to Region of Ontario?

    Currently, January is the cheapest month in which you can book a flight from Atlanta to Region of Ontario (average of $243). Flying from Atlanta to Region of Ontario in July is currently the most expensive (average of $353). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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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.
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Top 4 airlines flying from Atlanta to Ontario

Discover the top 4 airlines that operate flights from Atlanta to Ontario. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated junio 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
WestJetCheapest$225Average$511FlexibilityNo cancel feeOn-time60%
Air CanadaCheapest$234Average$658FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$247Average$716FlexibilityNo cancel feeOn-time69%
DeltaCheapest$256Average$618FlexibilityNo cancel feeOn-timeN/A

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