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Cheap flights from Atlanta to Ontario from C$ 146

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 14/5. Fares are subject to change and may not be available on all flights or dates of travel.
ATL — YYZ
20 Apr — 27 Apr1
1 adult

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 15 April 2025.

Round-trip from

C$ 284

One-way from

C$ 146

Popular in

February

Cheapest in

March

Average price

C$ 795

Good round-trip deal

C$ 277 or less

Good one-way deal

C$ 371 or less
14/5-20/5
  • 14/5-20/5
  • 4 total stops
  • 51h 45m total
  • Atlanta to Ontario
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14/5
  • 14/5
  • 2 total stops
  • 19h 17m total
  • Atlanta to Ontario
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Highest demand for flights based on searches. 1% potential increase in price (C$ 20 potential increase over avg. RT price).
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Cheapest flight prices on average. 0% potential price decrease (C$ 12 potential savings vs. average RT price).
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Average for round-trip flights in April 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 15 April 2025.

Wed 14/51:59 p.m.ATL - YYZ
2 stops24h 06mMultiple Airlines
Tue 20/56:30 a.m.YYZ - ATL
2 stops27h 39mMultiple Airlines
Deal found 14/4C$ 284
Wed 7/57:16 p.m.ATL - YUL
3 stops26h 59mMultiple Airlines
Mon 12/57:00 a.m.YUL - ATL
3 stops26h 38mMultiple Airlines
Deal found 14/4C$ 360
Wed 14/51:03 p.m.ATL - YTZ
1 stop4h 50mMultiple Airlines
Tue 20/55:15 p.m.YTZ - ATL
1 stop5h 20mMultiple Airlines
Deal found 14/4C$ 368
Fri 30/56:55 a.m.ATL - YOW
1 stop10h 11mMultiple Airlines
Wed 4/64:10 p.m.YOW - ATL
1 stop6h 25mMultiple Airlines
Deal found 14/4C$ 389
Sun 15/610:40 p.m.ATL - YYZ
1 stop12h 44mDelta
Tue 24/610:20 a.m.YYZ - ATL
1 stop11h 20mDelta
Deal found 14/4C$ 544
Sat 11/106:12 p.m.ATL - YYZ
1 stop14h 47mWestJet
Sun 12/1012:00 p.m.YYZ - ATL
1 stop25h 10mWestJet
Deal found 15/4C$ 548
Wed 11/64:55 p.m.ATL - YOW
1 stop12h 30mWestJet
Tue 17/66:10 a.m.YOW - ATL
1 stop9h 51mWestJet
Deal found 14/4C$ 580
Wed 7/512:30 p.m.ATL - YUL
1 stop8h 39mDelta
Mon 12/56:05 a.m.YUL - ATL
1 stop8h 19mDelta
Deal found 14/4C$ 601
Fri 30/52:05 p.m.ATL - YXU
2 stops15h 09mWestJet
Fri 6/68:00 p.m.YXU - ATL
1 stop10h 54mWestJet
Deal found 15/4C$ 698
Fri 30/55:52 p.m.ATL - YXU
3 stops35h 22mMultiple Airlines
Fri 6/68:00 p.m.YXU - ATL
1 stop10h 54mMultiple Airlines
Deal found 15/4C$ 701
Tue 6/52:05 p.m.ATL - YTZ
1 stop5h 45mAir Canada
Sat 10/53:25 p.m.YTZ - ATL
1 stop6h 09mAir Canada
Deal found 14/4C$ 743
Thu 10/711:05 a.m.ATL - YXU
1 stop6h 02mUnited Airlines
Sun 13/73:35 p.m.YXU - ATL
1 stop5h 51mUnited Airlines
Deal found 15/4C$ 790

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 15 April 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

Wed 14/5

1:59 p.m.-2:05 p.m.

2 stops24h 06m

Toronto Pearson Intl

Tue 20/5

6:30 a.m.-10:09 a.m.

2 stops27h 39m

C$ 284

AtlantaMontreal

ATL - YUL

ATLYUL

Atlanta Hartsfield-Jackson

Wed 7/5

7:16 p.m.-10:15 p.m.

3 stops26h 59m

Montreal Pierre Elliott Trudeau Intl

Mon 12/5

7:00 a.m.-9:38 a.m.

3 stops26h 38m

C$ 360

AtlantaToronto

ATL - YTZ

ATLYTZ

Atlanta Hartsfield-Jackson

Wed 14/5

1:03 p.m.-5:53 p.m.

1 stop4h 50m

Toronto Island

Tue 20/5

5:15 p.m.-10:35 p.m.

1 stop5h 20m

C$ 368

AtlantaOttawa

ATL - YOW

ATLYOW

Atlanta Hartsfield-Jackson

Fri 30/5

6:55 a.m.-5:06 p.m.

1 stop10h 11m

Ottawa

Wed 4/6

4:10 p.m.-10:35 p.m.

1 stop6h 25m

C$ 389

AtlantaToronto

ATL - YYZ

ATLYYZ

Atlanta Hartsfield-Jackson

Sun 15/6

10:40 p.m.-11:24 a.m.

1 stop12h 44m

Toronto Pearson Intl

Tue 24/6

10:20 a.m.-9:40 p.m.

1 stop11h 20m

C$ 544

AtlantaToronto

ATL - YYZ

ATLYYZ

Atlanta Hartsfield-Jackson

Sat 11/10

6:12 p.m.-8:59 a.m.

1 stop14h 47m

Toronto Pearson Intl

Sun 12/10

12:00 p.m.-1:10 p.m.

1 stop25h 10m

C$ 548

AtlantaMontreal

ATL - YUL

ATLYUL

Atlanta Hartsfield-Jackson

Wed 14/5

7:30 a.m.-4:04 p.m.

1 stop8h 34m

Montreal Pierre Elliott Trudeau Intl

Wed 21/5

6:05 a.m.-2:24 p.m.

1 stop8h 19m

C$ 578

AtlantaOttawa

ATL - YOW

ATLYOW

Atlanta Hartsfield-Jackson

Wed 11/6

4:55 p.m.-5:25 a.m.

1 stop12h 30m

Ottawa

Tue 17/6

6:10 a.m.-4:01 p.m.

1 stop9h 51m

C$ 580

AtlantaMontreal

ATL - YUL

ATLYUL

Atlanta Hartsfield-Jackson

Tue 29/4

11:45 a.m.-2:30 p.m.

Nonstop2h 45m

Montreal Pierre Elliott Trudeau Intl

Wed 30/4

6:30 p.m.-9:29 p.m.

Nonstop2h 59m

C$ 634

AtlantaLondon

ATL - YXU

ATLYXU

Atlanta Hartsfield-Jackson

Fri 30/5

2:05 p.m.-5:14 a.m.

2 stops15h 09m

London

Fri 6/6

8:00 p.m.-6:54 a.m.

1 stop10h 54m

C$ 698

Flights are sorted by cheapest round-trip flights first.

Deals found on 14/4

Showing 1-10 of 33 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 C$ 167). Flying from Atlanta to Region of Ontario in July is currently the most expensive (average of C$ 258). 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 15 April 2025.

When flying from Atlanta to Region of Ontario, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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 15 April 2025.

The most flights from ATL to CAON are scheduled on a Monday (26 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (10 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 51.0 - 83.0 mm per month. June is typically the wettest month, when rainfall can reach 83.0 mm. February is typically the driest time to visit Region of Ontario when rainfall is around 51.0 mm.

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 21.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -6.0 C).

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 15 April 2025.
Get a feel of what it's like to fly with Delta, United Airlines and American Airlines from Atlanta to Ontario by reading reviews from past customers. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,917 reviews
Check prices

Overall

8.0

Crew

8.5

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Food

7.3

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
7,917 reviews
Delta
8.0
Very good
7,917 reviews
Check prices

Overall

8.0

Crew

8.5

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Food

7.3

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
8,658 reviews
Delta
8.0
Very good
7,917 reviews
Check prices

Overall

8.0

Crew

8.5

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Food

7.3

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
7,917 reviews
Check prices

Overall

8.0

Crew

8.5

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Food

7.3

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
2,805 reviews
Delta
8.0
Very good
7,917 reviews
Check prices

Overall

8.0

Crew

8.5

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Food

7.3

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
9,127 reviews
Delta
8.0
Very good
7,917 reviews
Check prices

Overall

8.0

Crew

8.5

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Food

7.3

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.

  • 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 Delta (C$ 249), WestJet (C$ 271), and American Airlines (C$ 300).

  • 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 - Toronto Pearson Intl, Atlanta Hartsfield-Jackson - Montreal Pierre Elliott Trudeau Intl and Atlanta Hartsfield-Jackson - Toronto Island.

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

    Consider LATAM Airlines (81%), Korean Air (77%) or Jazz (74%) 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$ 585 for a flight from Atlanta to Region of Ontario. The cheapest flight overall is C$ 186 while the most popular route, (Atlanta Hartsfield-Jackson - Toronto Pearson Intl) is currently priced at C$ 260.

  • 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 C$ 167). Flying from Atlanta to Region of Ontario in July is currently the most expensive (average of C$ 258). 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.
Atlanta to Vancouver Intl flights
Atlanta to Pearson Intl flights
Atlanta to Pierre Elliott Trudeau Intl flights
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Jacksonville to Calgary flights
Atlanta to Charlottetown flights
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Jacksonville to Québec City flights
Chattanooga to Vancouver Intl flights
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Tallahassee to Pearson Intl flights
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Jacksonville to St. John's flights
Savannah to Halifax flights
Augusta to Pierre Elliott Trudeau Intl flights
Chattanooga to Pierre Elliott Trudeau Intl flights
Atlanta to Victoria flights
Tallahassee to Calgary flights
Chattanooga to Calgary flights
Chattanooga to Pearson Intl flights
Jacksonville to Halifax flights
Atlanta to Whitehorse flights
Chattanooga to Halifax flights
Augusta to Pearson Intl flights
Atlanta to Kelowna flights
Atlanta to Saskatoon 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 629,999 searches. Data last updated 15 April 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapestC$ 277AverageC$ 329FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
Air CanadaCheapestC$ 329AverageC$ 755FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
United AirlinesCheapestC$ 346AverageC$ 795FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
WestJetCheapestC$ 681AverageC$ 1,033FlexibilityNo 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.

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