Find flights
Deals
When to book
Airlines
FAQs

Cheap flights from Atlanta to Ontario from C$ 147

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 15/4. Fares are subject to change and may not be available on all flights or dates of travel.
ATL — YYZ
9 Apr — 16 Apr1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Atlanta to Ontario

Enter your travel dates to find the best prices.

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 10 March 2026.

Thu 2/46:00 a.m.
ATL
-
YYZ
1 stop8h 20m
Multiple Airlines
Sat 4/43:25 p.m.
YYZ
-
ATL
1 stop9h 14m
Multiple Airlines
Deal found 6/3C$ 363
Wed 22/49:10 p.m.
ATL
-
YUL
2 stops19h 20m
Multiple Airlines
Sat 25/48:00 a.m.
YUL
-
ATL
1 stop8h 16m
Multiple Airlines
Deal found 9/3C$ 363
Fri 27/38:57 p.m.
ATL
-
YYZ
1 stop14h 38m
Multiple Airlines
Mon 30/37:10 a.m.
YYZ
-
ATL
1 stop23h 54m
Multiple Airlines
Deal found 6/3C$ 364
Thu 2/46:00 a.m.
ATL
-
YYZ
1 stop8h 20m
Multiple Airlines
Sun 5/47:15 a.m.
YYZ
-
ATL
2 stops17h 21m
Multiple Airlines
Deal found 8/3C$ 365
Thu 26/310:44 p.m.
ATL
-
YYZ
1 stop12h 44m
Multiple Airlines
Mon 30/37:10 a.m.
YYZ
-
ATL
1 stop14h 25m
Multiple Airlines
Deal found 6/3C$ 368
Wed 22/410:45 p.m.
ATL
-
YUL
1 stop26h 00m
Multiple Airlines
Sun 26/48:00 a.m.
YUL
-
ATL
1 stop23h 40m
Multiple Airlines
Deal found 6/3C$ 368
Thu 16/45:10 a.m.
ATL
-
YYZ
1 stop8h 55m
Multiple Airlines
Sun 19/46:30 a.m.
YYZ
-
ATL
1 stop12h 20m
Multiple Airlines
Deal found 8/3C$ 369
Tue 14/45:56 p.m.
ATL
-
YYZ
2 stops20h 24m
Multiple Airlines
Mon 20/46:30 a.m.
YYZ
-
ATL
1 stop12h 20m
Multiple Airlines
Deal found 8/3C$ 371
Wed 6/58:57 p.m.
ATL
-
YYZ
1 stop14h 38m
Multiple Airlines
Sun 10/58:10 a.m.
YYZ
-
ATL
1 stop23h 09m
Multiple Airlines
Deal found 6/3C$ 372
Thu 23/410:40 p.m.
ATL
-
YYZ
2 stops21h 30m
Multiple Airlines
Sun 26/48:20 p.m.
YYZ
-
ATL
1 stop11h 39m
Multiple Airlines
Deal found 6/3C$ 373
Wed 22/49:10 p.m.
ATL
-
YTZ
1 stop16h 32m
Multiple Airlines
Wed 29/49:25 a.m.
YTZ
-
ATL
1 stop7h 56m
Multiple Airlines
Deal found 8/3C$ 373
Wed 22/410:45 p.m.
ATL
-
YUL
1 stop16h 25m
Multiple Airlines
Mon 27/48:00 a.m.
YUL
-
ATL
1 stop24h 17m
Multiple Airlines
Deal found 9/3C$ 373

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 10 March 2026.

Round-trip from

C$ 363

One-way from

C$ 147

Popular in

August

Cheapest in

November

Average price

C$ 839

Good round-trip deal

C$ 709 or less

Good one-way deal

C$ 441 or less
2/4-4/4
  • 2/4-4/4
  • 2 total stops
  • 17h 34m total
  • Atlanta to Ontario
Search Deals
15/4
  • 15/4
  • 1 total stop
  • 25h 40m total
  • Atlanta to Ontario
Search Deals
Highest demand for flights based on searches. 2% potential increase in price (C$ 28 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (C$ 13 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 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 629,999 searches. Data last updated 10 March 2026.
Use the filters below to find and compare flights from Atlanta to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

AtlantaToronto

ATL - YTZ

ATLYTZ

Atlanta Hartsfield-Jackson

Tue 14/4

9:10 p.m.-1:42 p.m.

1 stop16h 32m

Toronto Island

Sat 25/4

11:20 a.m.-10:49 p.m.

1 stop11h 29m

C$ 375

AtlantaToronto

ATL - YTZ

ATLYTZ

Atlanta Hartsfield-Jackson

Sat 28/3

10:45 p.m.-10:35 a.m.

1 stop11h 50m

Toronto Island

Sat 4/4

11:20 a.m.-6:02 p.m.

1 stop6h 42m

C$ 401

AtlantaToronto

ATL - YTZ

ATLYTZ

Atlanta Hartsfield-Jackson

Wed 8/4

9:15 p.m.-1:42 p.m.

1 stop16h 27m

Toronto Island

Wed 15/4

9:25 a.m.-5:21 p.m.

1 stop7h 56m

C$ 426

AtlantaToronto

ATL - YTZ

ATLYTZ

Atlanta Hartsfield-Jackson

Thu 2/4

5:45 a.m.-8:03 p.m.

2 stops14h 18m

Toronto Island

Sat 4/4

6:25 p.m.-1:07 a.m.

1 stop6h 42m

C$ 459

AtlantaOttawa

ATL - YOW

ATLYOW

Atlanta Hartsfield-Jackson

Thu 9/4

2:37 p.m.-11:54 p.m.

1 stop9h 17m

Ottawa

Sat 11/4

6:25 a.m.-1:35 p.m.

1 stop7h 10m

C$ 467

AtlantaToronto

ATL - YTZ

ATLYTZ

Atlanta Hartsfield-Jackson

Mon 27/4

9:15 p.m.-1:42 p.m.

1 stop16h 27m

Toronto Island

Sun 31/5

8:35 p.m.-8:42 a.m.

1 stop12h 07m

C$ 467

AtlantaToronto

ATL - YTZ

ATLYTZ

Atlanta Hartsfield-Jackson

Mon 23/3

10:40 p.m.-10:35 a.m.

1 stop11h 55m

Toronto Island

Thu 26/3

12:00 p.m.-11:29 p.m.

2 stops11h 29m

C$ 482

AtlantaToronto

ATL - YTZ

ATLYTZ

Atlanta Hartsfield-Jackson

Mon 30/3

10:45 p.m.-1:20 p.m.

2 stops14h 35m

Toronto Island

Wed 1/4

8:00 a.m.-3:51 p.m.

1 stop7h 51m

C$ 483

AtlantaToronto

ATL - YTZ

ATLYTZ

Atlanta Hartsfield-Jackson

Thu 14/5

10:08 a.m.-6:00 p.m.

1 stop7h 52m

Toronto Island

Sun 17/5

10:50 a.m.-11:11 p.m.

2 stops12h 21m

C$ 521

AtlantaOttawa

ATL - YOW

ATLYOW

Atlanta Hartsfield-Jackson

Thu 2/4

5:45 a.m.-10:03 a.m.

1 stop4h 18m

Ottawa

Mon 13/4

5:50 p.m.-11:44 p.m.

1 stop5h 54m

C$ 532

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/3

Showing 1-10 of 60 resultsSorted by cheapest first
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 C$ 134). Flying from Atlanta to Region of Ontario in October is currently the most expensive (average of C$ 502). 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 10 March 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 at noon, which can drop the price by up to 63% 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 21 February 2026.

Travelers seeking maximum savings on their Atlanta to Region of Ontario flight should consider departing on Wednesday afternoons when fares are most often at their lowest. Saturday evenings 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 10 March 2026.

The most flights from ATL to CAON are scheduled on a Monday (22 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (16 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 10 March 2026.
Read reviews from past customers who have flown Delta,WestJet, andAir Canada from Atlanta to Ontario. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,276 reviews
Check prices

Food

7.2

Entertainment

7.8

Overall

7.9

Comfort

7.9

Crew

8.5

Boarding

8.1

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
8,276 reviews
Delta
7.9
Good
8,276 reviews
Check prices

Food

7.2

Entertainment

7.8

Overall

7.9

Comfort

7.9

Crew

8.5

Boarding

8.1

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
3,288 reviews
Delta
7.9
Good
8,276 reviews
Check prices

Food

7.2

Entertainment

7.8

Overall

7.9

Comfort

7.9

Crew

8.5

Boarding

8.1

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
10,800 reviews
Delta
7.9
Good
8,276 reviews
Check prices

Food

7.2

Entertainment

7.8

Overall

7.9

Comfort

7.9

Crew

8.5

Boarding

8.1

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?

    Located just 13.2 km from the city centre, Atlanta Hartsfield-Jackson (ATL) is the airport most travellers will use when flying to Ontario from Atlanta.

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

    For as low as C$ 604, United Airlines can have you in Region of Ontario from Atlanta in 8h 11m. There are 1191 km between Atlanta and Region of Ontario. This flight may include one or multiple stops.

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

    The cheapest airlines for a one-way flight from Atlanta to Region of Ontario are Frontier (C$ 107), WestJet (C$ 156), and United Airlines (C$ 181).

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

    The most popular flight routes from Atlanta to Region of Ontario are Atlanta Hartsfield-Jackson - Montreal Pierre Elliott Trudeau Intl, Atlanta Hartsfield-Jackson - Toronto Pearson Intl and Atlanta Hartsfield-Jackson - Toronto Island.

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

    Consider Jazz (86%), LATAM Airlines (83%) or Korean Air (75%) when booking your flight. These represent the most reliable airlines when flying from Atlanta to Region of Ontario.

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

    On average you can expect to pay C$ 706 for a flight from Atlanta to Region of Ontario. The cheapest flight overall is C$ 375 while the most popular route, (Atlanta Hartsfield-Jackson - Montreal Pierre Elliott Trudeau Intl) is currently priced at C$ 363.

  • 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 C$ 134). Flying from Atlanta to Region of Ontario in October is currently the most expensive (average of C$ 502). 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 Pierre Elliott Trudeau Intl flights
Atlanta to Pearson Intl flights
Atlanta to Calgary flights
Atlanta to Toronto Island flights
Jacksonville to Pierre Elliott Trudeau Intl flights
Atlanta to Winnipeg flights
Jacksonville to Pearson Intl flights
Atlanta to Québec City flights
Atlanta to Halifax flights
Savannah to Pearson Intl flights
Savannah to Pierre Elliott Trudeau Intl flights
Jacksonville to Toronto Island flights
Asheville to Pierre Elliott Trudeau Intl flights
Jacksonville to Vancouver Intl flights
Atlanta to Edmonton flights
Atlanta to Ottawa flights
Atlanta to Kelowna flights
Atlanta to Victoria flights
Chattanooga to Pierre Elliott Trudeau Intl flights
Atlanta to Charlottetown flights
Chattanooga to Pearson Intl flights
Asheville to Vancouver Intl flights
Tallahassee to Pearson Intl flights
Chattanooga to Halifax flights
Chattanooga to Vancouver Intl flights
Jacksonville to Calgary flights
Jacksonville to Québec City flights
Savannah to Vancouver Intl flights
Atlanta to St. John's flights
Jacksonville to Edmonton flights
Augusta to Pierre Elliott Trudeau Intl flights
Savannah to Calgary flights
Tallahassee to Pierre Elliott Trudeau Intl flights
Augusta to Pearson Intl flights
Asheville to Calgary flights
Brunswick to Pierre Elliott Trudeau Intl flights
Chattanooga to Edmonton flights
Jacksonville to Winnipeg flights
Atlanta to Saskatoon flights
Jacksonville to St. John's flights
Atlanta to Whitehorse flights
Jacksonville to Halifax flights
Asheville to Victoria flights

Top 3 airlines flying from Atlanta to Ontario

Discover the top 3 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 629,999 searches. Data last updated 10 March 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapestC$ 270AverageC$ 283FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
Air CanadaCheapestC$ 280AverageC$ 815FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
WestJetCheapestC$ 434AverageC$ 1,000FlexibilityNo cancel feeOn-time60%
Search WestJet flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

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

Cheapflights helps you search for flights from Atlanta to Ontario via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

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

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Atlanta to Ontario.

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

Users can book flights with no change fees policies with our dedicated filters. Book flights from Atlanta to Ontario flexibly with Cheapflights today.

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

Yes, Cheapflights offers price alerts on Atlanta to Ontario flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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.