HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Ontario

$92+ 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 2/18. Fares are subject to change and may not be available on all flights or dates of travel.
ATL — YYZ
Feb 28 — Mar 71
Sat 2/28
Sat 3/7
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Atlanta to Ontario with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap 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 January 29, 2026.

This Kiwi.com deal was found by Cheapflights users on 1/28. 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.
Wed 3/1110:02 pm
ATL
-
YUL
1 stop18h 18m
Multiple Airlines
Mon 3/168:00 am
YUL
-
ATL
1 stop23h 54m
Multiple Airlines
Deal found 1/28$239
This Kiwi.com deal was found by Cheapflights users on 1/28. 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.
Thu 3/127:53 am
ATL
-
YUL
1 stop8h 27m
Multiple Airlines
Mon 3/168:00 am
YUL
-
ATL
1 stop23h 54m
Multiple Airlines
Deal found 1/28$240
This Kiwi.com deal was found by Cheapflights users on 1/28. 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.
Tue 2/2410:51 pm
ATL
-
YYZ
2 stops21h 18m
Multiple Airlines
Thu 3/58:20 pm
YYZ
-
ATL
1 stop10h 59m
Multiple Airlines
Deal found 1/28$246
This Kiwi.com deal was found by Cheapflights users on 1/28. 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.
Wed 2/257:45 am
ATL
-
YYZ
2 stops12h 24m
Multiple Airlines
Wed 3/48:20 pm
YYZ
-
ATL
1 stop10h 44m
Multiple Airlines
Deal found 1/28$248
This Kiwi.com deal was found by Cheapflights users on 1/27. 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.
Fri 2/135:25 am
ATL
-
YYZ
1 stop9h 55m
Multiple Airlines
Mon 3/23:40 pm
YYZ
-
ATL
1 stop18h 44m
Multiple Airlines
Deal found 1/27$249
This Kiwi.com deal was found by Cheapflights users on 1/27. 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 3/23:43 pm
ATL
-
YYZ
1 stop8h 31m
Multiple Airlines
Wed 3/47:15 am
YYZ
-
ATL
2 stops10h 38m
Multiple Airlines
Deal found 1/27$250
This Kiwi.com deal was found by Cheapflights users on 1/27. 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.
Fri 3/136:00 am
ATL
-
YYZ
1 stop8h 20m
Multiple Airlines
Fri 3/208:20 pm
YYZ
-
ATL
1 stop10h 44m
Multiple Airlines
Deal found 1/27$251
This Mytrip deal was found by Cheapflights users on 1/28. 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 3/265:25 am
ATL
-
YYZ
1 stop14h 30m
Multiple Airlines
Sun 3/293:40 pm
YYZ
-
ATL
2 stops18h 25m
Multiple Airlines
Deal found 1/28$253
This Kiwi.com deal was found by Cheapflights users on 1/27. 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.
Wed 3/114:15 pm
ATL
-
YYZ
1 stop7h 05m
Multiple Airlines
Wed 3/1811:15 am
YYZ
-
ATL
1 stop7h 57m
Multiple Airlines
Deal found 1/27$254
This Kiwi.com deal was found by Cheapflights users on 1/27. 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.
Wed 3/45:25 am
ATL
-
YYZ
1 stop9h 28m
Multiple Airlines
Wed 3/45:15 pm
YYZ
-
ATL
1 stop6h 18m
Multiple Airlines
Deal found 1/27$255
This Kiwi.com deal was found by Cheapflights users on 1/28. 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.
Fri 2/2710:32 am
ATL
-
YYZ
1 stop11h 43m
Multiple Airlines
Fri 3/65:15 pm
YYZ
-
ATL
1 stop13h 49m
Multiple Airlines
Deal found 1/28$256
This Kiwi.com deal was found by Cheapflights users on 1/28. 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.
Tue 2/103:26 pm
ATL
-
YYZ
1 stop7h 54m
Multiple Airlines
Mon 2/168:30 pm
YYZ
-
ATL
1 stop11h 29m
Multiple Airlines
Deal found 1/28$257

Find flight deals from Atlanta to Ontario

Keep the following information in mind while searching for Atlanta to Ontario flight deals. Data was last updated January 29, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$239
(Kiwi.com)

One-way from

$92
(Trip.com)

Popular in

August

Cheapest in

February

Average price

$662

Good round-trip deal

$537 or less

Good one-way deal

$149 or less
Provider with most accurate pricing for Atlanta Hartsfield-Jackson-Toronto (YTO) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Atlanta Hartsfield-Jackson-Toronto (YTO) flights.
Search Deals
From Atlanta Hartsfield-Jackson to Ontario
Search Deals
One-way flight from Atlanta Hartsfield-Jackson to Ontario
Search Deals
Highest demand for flights based on searches. 7% potential increase in price ($46 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($10 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals
Price to beat on a round-trip flight from Atlanta Hartsfield-Jackson to Ontario.
Search Deals
Price to beat on a one-way flight from Atlanta Hartsfield-Jackson to Ontario.
Search Deals

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 January 29, 2026.
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

Tue 2/24

1:22 pm-12:14 am

1 stop10h 52m

Toronto Pearson Intl

Thu 3/5

8:20 pm-7:19 am

1 stop10h 59m

$252

AtlantaOttawa

ATL - YOW

ATLYOW

Atlanta Hartsfield-Jackson

Wed 2/18

4:17 pm-12:25 am

1 stop8h 08m

Ottawa

Wed 2/25

12:10 pm-8:31 pm

2 stops8h 21m

$262

AtlantaToronto

ATL - YTZ

ATLYTZ

Atlanta Hartsfield-Jackson

Sun 2/15

6:00 am-1:20 pm

1 stop7h 20m

Toronto Island

Thu 2/19

7:00 am-9:35 pm

2 stops14h 35m

$263

AtlantaOttawa

ATL - YOW

ATLYOW

Atlanta Hartsfield-Jackson

Thu 2/19

9:38 am-12:25 am

1 stop14h 47m

Ottawa

Fri 2/20

4:40 pm-7:42 am

2 stops15h 02m

$265

AtlantaOttawa

ATL - YOW

ATLYOW

Atlanta Hartsfield-Jackson

Wed 3/4

4:17 pm-12:25 am

1 stop8h 08m

Ottawa

Sun 3/8

4:20 pm-11:33 pm

1 stop7h 13m

$269

AtlantaToronto

ATL - YTZ

ATLYTZ

Atlanta Hartsfield-Jackson

Wed 3/4

6:00 am-11:40 am

1 stop5h 40m

Toronto Island

Sat 3/7

11:00 am-7:08 pm

1 stop8h 08m

$273

AtlantaToronto

ATL - YTZ

ATLYTZ

Atlanta Hartsfield-Jackson

Sat 2/14

6:00 am-11:40 am

1 stop5h 40m

Toronto Island

Thu 2/19

7:00 am-9:35 pm

2 stops14h 35m

$277

AtlantaToronto

ATL - YTZ

ATLYTZ

Atlanta Hartsfield-Jackson

Tue 2/24

6:00 am-11:40 am

1 stop5h 40m

Toronto Island

Thu 3/5

9:15 am-8:08 pm

1 stop10h 53m

$280

AtlantaToronto

ATL - YTZ

ATLYTZ

Atlanta Hartsfield-Jackson

Thu 2/26

6:00 am-11:40 am

1 stop5h 40m

Toronto Island

Thu 3/5

9:15 am-8:30 pm

1 stop11h 15m

$281

AtlantaMontreal

ATL - YUL

ATLYUL

Atlanta Hartsfield-Jackson

Thu 2/26

7:38 am-4:22 pm

1 stop8h 44m

Montreal Pierre Elliott Trudeau Intl

Sun 3/1

9:50 am-9:03 am

2 stops23h 13m

$286

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/27

Showing 1-10 of 60 results
1
2
3
...
6

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, June is the cheapest month in which you can book a flight from Atlanta to Region of Ontario (average of $99). Flying from Atlanta to Region of Ontario in October is currently the most expensive (average of $320). 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 January 29, 2026.

When flying from Atlanta to Region of Ontario, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 33% versus a flight in the morning.

What is the cheapest day to fly from Atlanta to Region of Ontario?

Use this chart to determine the cheapest time to fly round-trip from Atlanta to Ontario. Price data was last updated on January 24, 2026.

Travelers seeking maximum savings on their Atlanta to Region of Ontario flight should consider departing on Thursday at noon when fares are most often at their lowest. Tuesday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

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 January 29, 2026.

The most flights from ATL to CAON are scheduled on a Monday (18 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (10 on average).

How much does it cost to fly round-trip from Atlanta to Region of Ontario?

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 January 29, 2026.
See what other customers who have flown with Delta, United Airlines, and WestJet from Atlanta to Ontario have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,127 reviews

Overall

7.9

Entertainment

7.8

Food

7.2

Crew

8.5

Boarding

8.1

Comfort

7.9

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
7.9
Good
8,127 reviews
Delta
7.9
Good
8,127 reviews

Overall

7.9

Entertainment

7.8

Food

7.2

Crew

8.5

Boarding

8.1

Comfort

7.9

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
9,215 reviews
Delta
7.9
Good
8,127 reviews

Overall

7.9

Entertainment

7.8

Food

7.2

Crew

8.5

Boarding

8.1

Comfort

7.9

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
3,253 reviews
Delta
7.9
Good
8,127 reviews

Overall

7.9

Entertainment

7.8

Food

7.2

Crew

8.5

Boarding

8.1

Comfort

7.9

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
10,667 reviews
Delta
7.9
Good
8,127 reviews

Overall

7.9

Entertainment

7.8

Food

7.2

Crew

8.5

Boarding

8.1

Comfort

7.9

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.

  • How long is the flight from Atlanta to Region of Ontario?

    There are many flights that can get you from Atlanta to Region of Ontario in 14h 50m. Fly via WestJet to get the fastest option. The distance from Atlanta to Region of Ontario is about 740 mi.

  • 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 $112 on WestJet. Other airlines that offer cheap prices include Delta from $199 and United Airlines from $212 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: TAP AIR PORTUGAL (90%), Jazz (82%), United Airlines( 82%).

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

    Looking at all options, your cheapest flight can be booked for $129. While the most popular route (Atlanta Hartsfield-Jackson - Toronto Pearson Intl) can be booked for $208 on average, our data indicates $1,490 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, June is the cheapest month in which you can book a flight from Atlanta to Region of Ontario (average of $99). Flying from Atlanta to Region of Ontario in October is currently the most expensive (average of $320). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Atlanta to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
Atlanta to Vancouver Intl flights
Atlanta to Calgary flights
Atlanta to Pearson Intl flights
Atlanta to Pierre Elliott Trudeau Intl flights
Atlanta to Abbotsford flights
Atlanta to Toronto Island flights
Asheville to Vancouver Intl flights
Jacksonville to Vancouver Intl flights
Atlanta to Halifax flights
Atlanta to Winnipeg flights
Jacksonville to Calgary flights
Jacksonville to Pearson Intl flights
Atlanta to Québec City flights
Atlanta to Edmonton flights
Atlanta to Regina flights
Jacksonville to Pierre Elliott Trudeau Intl flights
Chattanooga to Vancouver Intl flights
Atlanta to Ottawa flights
Savannah to Pearson Intl flights
Asheville to Pierre Elliott Trudeau Intl flights
Jacksonville to Québec City flights
Savannah to Vancouver Intl flights
Chattanooga to Pierre Elliott Trudeau Intl flights
Tallahassee to Pearson Intl flights
Jacksonville to Toronto Island flights
Atlanta to St. John's flights
Tallahassee to Pierre Elliott Trudeau Intl flights
Atlanta to Victoria flights
Asheville to Pearson Intl flights
Atlanta to Saskatoon flights
Atlanta to Fredericton flights
Atlanta to Charlottetown flights
Atlanta to Kelowna flights
Asheville to Halifax flights
Jacksonville to Victoria flights
Asheville to Québec City flights
Asheville to Calgary flights
Jacksonville to Halifax flights
Chattanooga to Halifax flights
Savannah to St. John's flights
Savannah to Pierre Elliott Trudeau Intl flights
Savannah to Victoria flights
Savannah to Winnipeg flights
Chattanooga to Edmonton flights
Atlanta to Deer Lake flights
Tallahassee to Calgary flights
Jacksonville to Winnipeg flights
Jacksonville to Ottawa flights
Jacksonville to Edmonton flights
Tallahassee to Vancouver Intl flights

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 January 29, 2026.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$240Average$649FlexibilityNo cancel feeOn-time67%
DeltaCheapest$242Average$559FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$242Average$590FlexibilityNo cancel feeOn-time69%
WestJetCheapest$259Average$703FlexibilityNo cancel feeOn-time60%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.