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$75+ 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 4/2. Fares are subject to change and may not be available on all flights or dates of travel.
ATL — YYZ
Mar 10 — Mar 171
Mon 3/10
Mon 3/17
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 March 5, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$222
(Mytrip)

One-way from

$75
(Kiwi.com)

Popular in

November

Cheapest in

March

Average price

$267

Good round-trip deal

$483 or less

Good one-way deal

$232 or less
Provider with most accurate pricing for Atlanta Hartsfield-Jackson-Toronto (YTO) flight deals.
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Provider most trusted by Cheapflights users for Atlanta Hartsfield-Jackson-Toronto (YTO) flights.
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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. 9% potential increase in price ($61 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($9 potential savings vs. average RT price).
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Average for round-trip flights in March 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 March 5, 2025.

This Mytrip deal was found by Cheapflights users on 3/5. 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.
Fri 3/215:45 amATL - YYZ
1 stop6h 00mMultiple Airlines
Tue 3/2510:30 amYYZ - ATL
2 stops31h 16mMultiple Airlines
Deal found 3/5$222
This Kiwi.com deal was found by Cheapflights users on 3/4. 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.
Mon 4/145:45 amATL - YOW
1 stop8h 35mMultiple Airlines
Tue 4/224:20 pmYOW - ATL
1 stop15h 40mMultiple Airlines
Deal found 3/4$226
This Mytrip deal was found by Cheapflights users on 3/4. 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.
Tue 4/15:45 amATL - YTZ
2 stops14h 55mMultiple Airlines
Fri 4/48:55 pmYTZ - ATL
1 stop11h 05mMultiple Airlines
Deal found 3/4$231
This Mytrip deal was found by Cheapflights users on 3/4. 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.
Thu 3/205:25 amATL - YUL
1 stop9h 30mMultiple Airlines
Mon 3/243:55 pmYUL - ATL
1 stop8h 03mMultiple Airlines
Deal found 3/4$242
This oojo deal was found by Cheapflights users on 3/4. 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.
Wed 3/1912:40 pmATL - YYZ
1 stop10h 50mWestJet
Sat 3/2210:45 pmYYZ - ATL
1 stop13h 03mWestJet
Deal found 3/4$274
This Flightnetwork deal was found by Cheapflights users on 3/4. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/196:30 amATL - YYZ
Nonstop2h 18mAir Canada
Sat 4/268:35 amYYZ - ATL
Nonstop2h 18mAir Canada
Deal found 3/4$365
This Gotogate deal was found by Cheapflights users on 3/4. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/2011:45 amATL - YUL
Nonstop2h 39mAir Canada
Mon 3/246:30 pmYUL - ATL
Nonstop3h 12mAir Canada
Deal found 3/4$382
This oojo deal was found by Cheapflights users on 3/4. 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.
Thu 5/12:05 pmATL - YUL
1 stop24h 09mWestJet
Fri 5/26:20 pmYUL - ATL
1 stop21h 41mWestJet
Deal found 3/4$386
This Delta deal was found by Cheapflights users on 3/4. 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.
Tue 3/1810:30 pmATL - YYZ
1 stop12h 48mDelta
Fri 3/2812:15 pmYYZ - ATL
1 stop11h 42mDelta
Deal found 3/4$394
This Delta deal was found by Cheapflights users on 3/4. 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.
Thu 4/179:00 amATL - YUL
Nonstop2h 33mDelta
Tue 4/2211:20 amYUL - ATL
1 stop11h 48mDelta
Deal found 3/4$424
This WestJet deal was found by Cheapflights users on 3/5. 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 WestJet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/1512:40 pmATL - YOW
2 stops12h 04mWestJet
Wed 4/303:45 pmYOW - ATL
2 stops24h 16mWestJet
Deal found 3/5$442
This American Airlines deal was found by Cheapflights users on 3/4. 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.
Tue 3/189:13 amATL - YUL
2 stops7h 46mAmerican Airlines
Sun 3/237:30 amYUL - ATL
2 stops10h 07mAmerican Airlines
Deal found 3/4$466

Find flights from Atlanta to Ontario within your budget

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 March 5, 2025.

Fly from

Atlanta

Fly to

Ontario

Route

Depart

Return

Price

AtlantaToronto

ATL - YYZ

ATLYYZ

Atlanta Hartsfield-Jackson

Fri 3/21

5:45 am-11:45 am

1 stop6h 00m

Toronto Pearson Intl

Tue 3/25

10:30 am-5:46 pm

2 stops31h 16m

$222

AtlantaOttawa

ATL - YOW

ATLYOW

Atlanta Hartsfield-Jackson

Mon 4/14

5:45 am-2:20 pm

1 stop8h 35m

Ottawa

Tue 4/22

4:20 pm-8:00 am

1 stop15h 40m

$226

AtlantaToronto

ATL - YTZ

ATLYTZ

Atlanta Hartsfield-Jackson

Tue 4/1

5:45 am-8:40 pm

2 stops14h 55m

Toronto Island

Fri 4/4

8:55 pm-8:00 am

1 stop11h 05m

$231

AtlantaMontreal

ATL - YUL

ATLYUL

Atlanta Hartsfield-Jackson

Thu 3/20

5:25 am-2:55 pm

1 stop9h 30m

Montreal Pierre Elliott Trudeau Intl

Mon 3/24

3:55 pm-11:58 pm

1 stop8h 03m

$242

AtlantaToronto

ATL - YYZ

ATLYYZ

Atlanta Hartsfield-Jackson

Wed 3/19

12:40 pm-11:30 pm

1 stop10h 50m

Toronto Pearson Intl

Sat 3/22

10:45 pm-11:48 am

1 stop13h 03m

$274

AtlantaToronto

ATL - YYZ

ATLYYZ

Atlanta Hartsfield-Jackson

Sat 4/19

6:30 am-8:48 am

Nonstop2h 18m

Toronto Pearson Intl

Sat 4/26

8:35 am-10:53 am

Nonstop2h 18m

$365

AtlantaMontreal

ATL - YUL

ATLYUL

Atlanta Hartsfield-Jackson

Thu 3/20

11:45 am-2:24 pm

Nonstop2h 39m

Montreal Pierre Elliott Trudeau Intl

Mon 3/24

6:30 pm-9:42 pm

Nonstop3h 12m

$382

AtlantaMontreal

ATL - YUL

ATLYUL

Atlanta Hartsfield-Jackson

Thu 5/1

2:05 pm-2:14 pm

1 stop24h 09m

Montreal Pierre Elliott Trudeau Intl

Fri 5/2

6:20 pm-4:01 pm

1 stop21h 41m

$386

AtlantaToronto

ATL - YYZ

ATLYYZ

Atlanta Hartsfield-Jackson

Tue 3/18

10:30 pm-11:18 am

1 stop12h 48m

Toronto Pearson Intl

Fri 3/28

12:15 pm-11:57 pm

1 stop11h 42m

$394

AtlantaMontreal

ATL - YUL

ATLYUL

Atlanta Hartsfield-Jackson

Thu 4/17

9:00 am-11:33 am

Nonstop2h 33m

Montreal Pierre Elliott Trudeau Intl

Tue 4/22

11:20 am-11:08 pm

1 stop11h 48m

$424

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/4

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.

Travel insights for flights from Atlanta to Ontario

Get recent, data-driven insights about flights from Atlanta to Ontario including ideal travel times, pricing trends, and more.

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 $359). 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 March 5, 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.

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 March 5, 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
8,044 reviews

Boarding

8.2

Food

7.3

Entertainment

7.9

Crew

8.5

Comfort

8.0

Overall

8.0

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
8,044 reviews
Delta
8.0
Very good
8,044 reviews

Boarding

8.2

Food

7.3

Entertainment

7.9

Crew

8.5

Comfort

8.0

Overall

8.0

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
8,655 reviews
Delta
8.0
Very good
8,044 reviews

Boarding

8.2

Food

7.3

Entertainment

7.9

Crew

8.5

Comfort

8.0

Overall

8.0

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
8,044 reviews

Boarding

8.2

Food

7.3

Entertainment

7.9

Crew

8.5

Comfort

8.0

Overall

8.0

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
2,788 reviews
Delta
8.0
Very good
8,044 reviews

Boarding

8.2

Food

7.3

Entertainment

7.9

Crew

8.5

Comfort

8.0

Overall

8.0

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
7.0
Good
8,837 reviews
Delta
8.0
Very good
8,044 reviews

Boarding

8.2

Food

7.3

Entertainment

7.9

Crew

8.5

Comfort

8.0

Overall

8.0

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 $138 on WestJet. Other airlines that offer cheap prices include Delta from $168 and Air Canada from $190 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: KLM (100%), Korean Air (74%), WestJet( 73%).

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

    Looking at all options, your cheapest flight can be booked for $114. While the most popular route (Atlanta Hartsfield-Jackson - Toronto Pearson Intl) can be booked for $176 on average our data indicates $1,113 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 $359). 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 5 airlines flying from Atlanta to Ontario

Discover the top 5 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 March 5, 2025.
AirlineCheapestAverageFlexibilityOn-time
WestJetCheapest$225Average$531FlexibilityNo cancel feeOn-time60%
Air CanadaCheapest$237Average$637FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$261Average$736FlexibilityNo cancel feeOn-time69%
DeltaCheapest$274Average$628FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$276Average$673FlexibilityNo cancel feeOn-time71%
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