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Cheap flights from Atlanta to Ontario from C$ 185

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 19/5. Fares are subject to change and may not be available on all flights or dates of travel.
ATL — YYZ
24 May — 31 May1
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 24 April 2026.

Thu 14/55:20 a.m.
ATL
-
YYZ
1 stop8h 45m
Multiple Airlines
Mon 18/58:10 a.m.
YYZ
-
ATL
1 stop10h 45m
Multiple Airlines
Deal found 21/4C$ 345
Thu 14/55:20 a.m.
ATL
-
YYZ
1 stop8h 45m
Multiple Airlines
Sun 17/56:30 a.m.
YYZ
-
ATL
1 stop17h 49m
Multiple Airlines
Deal found 21/4C$ 358
Mon 1/610:48 p.m.
ATL
-
YYZ
1 stop15h 17m
Multiple Airlines
Mon 8/68:10 a.m.
YYZ
-
ATL
1 stop24h 55m
Multiple Airlines
Deal found 22/4C$ 360
Sat 6/65:20 a.m.
ATL
-
YYZ
1 stop8h 45m
Multiple Airlines
Sun 7/66:30 a.m.
YYZ
-
ATL
1 stop16h 27m
Multiple Airlines
Deal found 19/4C$ 363
Fri 15/510:48 p.m.
ATL
-
YYZ
1 stop15h 17m
Multiple Airlines
Mon 18/58:10 a.m.
YYZ
-
ATL
1 stop10h 45m
Multiple Airlines
Deal found 21/4C$ 365
Fri 5/69:16 p.m.
ATL
-
YTZ
1 stop15h 44m
Multiple Airlines
Tue 9/69:15 a.m.
YTZ
-
ATL
1 stop11h 34m
Multiple Airlines
Deal found 22/4C$ 367
Fri 5/69:21 p.m.
ATL
-
YYZ
1 stop16h 44m
Multiple Airlines
Tue 9/66:30 a.m.
YYZ
-
ATL
1 stop10h 42m
Multiple Airlines
Deal found 19/4C$ 373
Wed 6/55:20 a.m.
ATL
-
YYZ
2 stops40h 35m
Multiple Airlines
Tue 12/56:30 a.m.
YYZ
-
ATL
1 stop10h 05m
Multiple Airlines
Deal found 22/4C$ 380
Fri 29/59:16 p.m.
ATL
-
YTZ
1 stop15h 44m
Multiple Airlines
Mon 1/68:15 p.m.
YTZ
-
ATL
1 stop12h 22m
Multiple Airlines
Deal found 23/4C$ 386
Thu 7/55:20 a.m.
ATL
-
YYZ
1 stop8h 45m
Multiple Airlines
Tue 12/56:30 a.m.
YYZ
-
ATL
1 stop16h 27m
Multiple Airlines
Deal found 21/4C$ 389
Thu 7/55:20 a.m.
ATL
-
YYZ
1 stop8h 45m
Multiple Airlines
Sun 10/56:30 a.m.
YYZ
-
ATL
1 stop13h 46m
Multiple Airlines
Deal found 21/4C$ 390
Tue 12/510:05 a.m.
ATL
-
YTZ
1 stop7h 55m
Multiple Airlines
Thu 14/51:45 p.m.
YTZ
-
ATL
1 stop25h 25m
Multiple Airlines
Deal found 24/4C$ 393

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 24 April 2026.

Round-trip from

C$ 345

One-way from

C$ 185

Popular in

April

Cheapest in

November

Average price

C$ 962

Good round-trip deal

C$ 327 or less

Good one-way deal

C$ 466 or less
14/5-18/5
  • 14/5-18/5
  • 2 total stops
  • 19h 30m total
  • Atlanta to Ontario
Search Deals
19/5
  • 19/5
  • 2 total stops
  • 25h 48m total
  • Atlanta to Ontario
Search Deals
Highest demand for flights based on searches. 5% potential increase in price (C$ 69 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (C$ 17 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 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 24 April 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

AtlantaOttawa

ATL - YOW

ATLYOW

Atlanta Hartsfield-Jackson

Mon 1/6

7:00 a.m.-4:31 p.m.

1 stop9h 31m

Ottawa

Wed 10/6

2:35 p.m.-8:12 p.m.

1 stop5h 37m

C$ 471

AtlantaOttawa

ATL - YOW

ATLYOW

Atlanta Hartsfield-Jackson

Wed 27/5

10:12 a.m.-5:07 p.m.

1 stop6h 55m

Ottawa

Wed 27/5

7:30 p.m.-12:30 a.m.

1 stop5h 00m

C$ 476

AtlantaToronto

ATL - YTZ

ATLYTZ

Atlanta Hartsfield-Jackson

Thu 4/6

9:25 a.m.-3:05 p.m.

1 stop5h 40m

Toronto Island

Mon 8/6

1:45 p.m.-9:19 a.m.

1 stop19h 34m

C$ 491

AtlantaOttawa

ATL - YOW

ATLYOW

Atlanta Hartsfield-Jackson

Sat 4/7

5:30 a.m.-10:03 a.m.

1 stop4h 33m

Ottawa

Tue 7/7

5:20 p.m.-11:30 p.m.

1 stop6h 10m

C$ 521
Quickest round-trip

AtlantaOttawa

ATL - YOW

ATLYOW

Atlanta Hartsfield-Jackson

Tue 26/5

7:32 p.m.-11:54 p.m.

1 stop4h 22m

Ottawa

Wed 27/5

7:30 p.m.-12:30 a.m.

1 stop5h 00m

C$ 521

AtlantaOttawa

ATL - YOW

ATLYOW

Atlanta Hartsfield-Jackson

Thu 23/7

5:30 a.m.-10:03 a.m.

1 stop4h 33m

Ottawa

Sun 26/7

6:00 a.m.-2:34 p.m.

1 stop8h 34m

C$ 521

AtlantaOttawa

ATL - YOW

ATLYOW

Atlanta Hartsfield-Jackson

Thu 28/5

5:30 a.m.-10:03 a.m.

1 stop4h 33m

Ottawa

Sun 31/5

6:25 a.m.-1:45 p.m.

1 stop7h 20m

C$ 521

AtlantaOttawa

ATL - YOW

ATLYOW

Atlanta Hartsfield-Jackson

Thu 30/7

1:18 p.m.-9:35 p.m.

1 stop8h 17m

Ottawa

Sun 2/8

7:30 p.m.-12:30 a.m.

1 stop5h 00m

C$ 521

AtlantaOttawa

ATL - YOW

ATLYOW

Atlanta Hartsfield-Jackson

Sun 17/5

5:30 a.m.-10:03 a.m.

1 stop4h 33m

Ottawa

Sun 24/5

6:00 a.m.-2:34 p.m.

1 stop8h 34m

C$ 521

AtlantaOttawa

ATL - YOW

ATLYOW

Atlanta Hartsfield-Jackson

Thu 18/6

8:00 a.m.-1:59 p.m.

1 stop5h 59m

Ottawa

Mon 29/6

7:30 p.m.-12:30 a.m.

1 stop5h 00m

C$ 521

Flights are sorted by cheapest round-trip flights first.

Deals found on 20/4

Showing 1-10 of 60 resultsSorted by cheapest first
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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

How far ahead should I book a flight from Atlanta to Region of Ontario?

Booking 77 days in advance of your planned departure date is, on average, the best time to get cheap flights from Atlanta to Region of Ontario. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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

Currently, August is the cheapest month in which you can book a flight from Atlanta to Region of Ontario (average of C$ 75). Flying from Atlanta to Region of Ontario in March is currently the most expensive (average of C$ 338). 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 24 April 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 47% versus a flight at noon.

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 18 April 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 24 April 2026.

The most flights from ATL to CAON are scheduled on a Wednesday (24 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (13 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 24 April 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
8,454 reviews
Check prices

Crew

8.5

Overall

7.9

Boarding

8.1

Food

7.2

Comfort

7.9

Entertainment

7.8

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
8,454 reviews
Delta
7.9
Good
8,454 reviews
Check prices

Crew

8.5

Overall

7.9

Boarding

8.1

Food

7.2

Comfort

7.9

Entertainment

7.8

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
3,325 reviews
Delta
7.9
Good
8,454 reviews
Check prices

Crew

8.5

Overall

7.9

Boarding

8.1

Food

7.2

Comfort

7.9

Entertainment

7.8

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
10,963 reviews
Delta
7.9
Good
8,454 reviews
Check prices

Crew

8.5

Overall

7.9

Boarding

8.1

Food

7.2

Comfort

7.9

Entertainment

7.8

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$ 756, Air Canada can have you in Region of Ontario from Atlanta in 2h 30m. There are 1596 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$ 108), WestJet (C$ 157), and United Airlines (C$ 223).

  • 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 United Airlines (81%), Air Canada (76%) or Jazz (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$ 451 for a flight from Atlanta to Region of Ontario. The cheapest flight overall is C$ 259 while the most popular route, (Atlanta Hartsfield-Jackson - Toronto Pearson Intl) is currently priced at C$ 360.

  • 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, August is the cheapest month in which you can book a flight from Atlanta to Region of Ontario (average of C$ 75). Flying from Atlanta to Region of Ontario in March is currently the most expensive (average of C$ 338). 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

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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 24 April 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapestC$ 285AverageC$ 331FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
Air CanadaCheapestC$ 393AverageC$ 841FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
WestJetCheapestC$ 437AverageC$ 1,007FlexibilityNo cancel feeOn-time60%
Search WestJet flights

Fly with Cheapflights

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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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