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Cheap flights from Ontario to Atlanta from $63

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to Atlanta departing on 2/28. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Ontario to Atlanta

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
7:15 am - 12:36 pm
ONT
-
ATL
26h 21m1 stop
Frontier Logo
10:40 am - 11:24 pm
ATL
-
ONT
15h 44m1 stop
$133Frontier
ter, jan 27 - sáb, jan 31
Frontier Logo
6:20 am - 12:36 pm
ONT
-
ATL
27h 16m1 stop
Frontier Logo
10:40 am - 11:24 pm
ATL
-
ONT
15h 44m1 stop
$144Frontier
seg, jan 26 - sáb, jan 31
Frontier Logo
7:15 am - 12:36 pm
ONT
-
ATL
26h 21m1 stop
Frontier Logo
8:04 pm - 3:07 pm
ATL
-
ONT
22h 03m1 stop
$146Frontier
ter, jan 27 - seg, fev 2
Frontier Logo
7:15 am - 12:36 pm
ONT
-
ATL
26h 21m1 stop
Frontier Logo
10:40 am - 3:07 pm
ATL
-
ONT
7h 27m1 stop
$147Frontier
ter, jan 27 - ter, fev 3
Frontier Logo
3:07 pm - 7:03 am
ONT
-
ATL
12h 56m1 stop
Frontier Logo
10:40 am - 3:07 pm
ATL
-
ONT
7h 27m1 stop
$148Frontier
ter, jan 27 - ter, fev 3
Frontier Logo
3:22 pm - 7:02 am
ONT
-
ATL
12h 40m1 stop
Frontier Logo
10:17 am - 9:34 pm
ATL
-
ONT
14h 17m1 stop
$149Frontier
ter, fev 24 - ter, mar 3
Frontier Logo
6:20 am - 12:36 pm
ONT
-
ATL
27h 16m1 stop
Frontier Logo
8:04 pm - 3:07 pm
ATL
-
ONT
22h 03m1 stop
$161Frontier
seg, jan 26 - seg, fev 2
Frontier Logo
6:20 am - 12:36 pm
ONT
-
ATL
27h 16m1 stop
Frontier Logo
10:40 am - 3:07 pm
ATL
-
ONT
7h 27m1 stop
$162Frontier
seg, jan 26 - ter, fev 3
Frontier Logo
6:20 am - 6:54 pm
ONT
-
ATL
9h 34m1 stop
Frontier Logo
10:40 am - 11:24 pm
ATL
-
ONT
15h 44m1 stop
$163Frontier
sex, jan 30 - sáb, jan 31
Frontier Logo
3:07 pm - 7:03 am
ONT
-
ATL
12h 56m1 stop
Frontier Logo
10:40 am - 3:07 pm
ATL
-
ONT
7h 27m1 stop
$165Frontier
ter, jan 20 - ter, jan 27

Frontier flights from Ontario to Atlanta

Our best Frontier deals on Ontario to Atlanta flight tickets
Frontier
Jan 27
ONT7:15 amOntario
26h 21m
1 stop
ATL12:36 pmAtlanta Hartsfield-Jackson
Jan 31
ATL10:40 amAtlanta Hartsfield-Jackson
15h 44m
1 stop
ONT11:24 pmOntario
$133
Find similar
Frontier
Feb 2
ONT6:20 amOntario
27h 16m
1 stop
ATL12:36 pmAtlanta Hartsfield-Jackson
Feb 7
ATL10:40 amAtlanta Hartsfield-Jackson
15h 44m
1 stop
ONT11:24 pmOntario
$144
Find similar
Frontier
Jan 27
ONT7:15 amOntario
26h 21m
1 stop
ATL12:36 pmAtlanta Hartsfield-Jackson
Feb 2
ATL8:04 pmAtlanta Hartsfield-Jackson
22h 03m
1 stop
ONT3:07 pmOntario
$146
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Ontario to Atlanta 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, momondo users made 832,500 searches. Data last updated dezembro 28, 2025.
Use the filters below to find and compare flights from Ontario to Atlanta that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

OntarioAtlanta

ONT - ATL

ONTATL

Ontario

ter 1/27

7:15 am-12:36 pm

1 stop26h 21m

Atlanta Hartsfield-Jackson

sáb 1/31

10:40 am-11:24 pm

1 stop15h 44m

$133

OntarioAtlanta

ONT - ATL

ONTATL

Ontario

seg 1/26

6:20 am-12:36 pm

1 stop27h 16m

Atlanta Hartsfield-Jackson

sáb 1/31

10:40 am-11:24 pm

1 stop15h 44m

$144

OntarioAtlanta

ONT - ATL

ONTATL

Ontario

ter 1/27

7:15 am-12:36 pm

1 stop26h 21m

Atlanta Hartsfield-Jackson

seg 2/2

8:04 pm-3:07 pm

1 stop22h 03m

$146

OntarioAtlanta

ONT - ATL

ONTATL

Ontario

ter 1/27

7:15 am-12:36 pm

1 stop26h 21m

Atlanta Hartsfield-Jackson

ter 2/3

10:40 am-3:07 pm

1 stop7h 27m

$147

OntarioAtlanta

ONT - ATL

ONTATL

Ontario

ter 1/27

3:07 pm-7:03 am

1 stop12h 56m

Atlanta Hartsfield-Jackson

ter 2/3

10:40 am-3:07 pm

1 stop7h 27m

$148

OntarioAtlanta

ONT - ATL

ONTATL

Ontario

ter 2/24

3:22 pm-7:02 am

1 stop12h 40m

Atlanta Hartsfield-Jackson

ter 3/3

10:17 am-9:34 pm

1 stop14h 17m

$149

OntarioAtlanta

ONT - ATL

ONTATL

Ontario

seg 1/26

6:20 am-12:36 pm

1 stop27h 16m

Atlanta Hartsfield-Jackson

seg 2/2

8:04 pm-3:07 pm

1 stop22h 03m

$161

OntarioAtlanta

ONT - ATL

ONTATL

Ontario

seg 1/26

6:20 am-12:36 pm

1 stop27h 16m

Atlanta Hartsfield-Jackson

ter 2/3

10:40 am-3:07 pm

1 stop7h 27m

$162

OntarioAtlanta

ONT - ATL

ONTATL

Ontario

sex 1/30

6:20 am-6:54 pm

1 stop9h 34m

Atlanta Hartsfield-Jackson

sáb 1/31

10:40 am-11:24 pm

1 stop15h 44m

$163

OntarioAtlanta

ONT - ATL

ONTATL

Ontario

ter 1/20

3:07 pm-7:03 am

1 stop12h 56m

Atlanta Hartsfield-Jackson

ter 1/27

10:40 am-3:07 pm

1 stop7h 27m

$165

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

See travel insights to Atlanta from

How to get the cheapest flight ticket from Ontario to Atlanta

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Atlanta?

The month of April is, on average, the cheapest month to fly to Atlanta from Ontario, with most prices found around $355. If you aren’t able to travel to Atlanta during the month of April, then flying in September is also cheap. Prices for this month can be found on momondo for an average of $394.

What is the cheapest day to depart on your flight to Atlanta?

Our data shows that Wednesday is the least expensive day to fly to Atlanta. Tickets to fly out on this day can be as low as $347. Be sure to avoid booking your departure on a Sunday as prices are generally higher than usual. According to our data, the average ticket price to Atlanta on Sunday is $427.

What is the cheapest time of day to depart on your flight to Atlanta?

The cheapest time of day to fly to Atlanta is in the evening when flights can be purchased for as low as $300. Flights to Atlanta are more costly in the morning, with an average ticket price of $424. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

What is the cheapest Ontario to Atlanta Hartsfield-Jackson flight route?

Fly from Ontario to Atlanta Hartsfield-Jackson for the best Ontario - Atlanta Hartsfield-Jackson flight prices

How far in advance should I book a flight to Atlanta?

You are more likely to see cheaper flights to Atlanta from Ontario when booking weeks ahead of your departure date. In general, you can expect to find flights to Atlanta for around $408 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Atlanta from Ontario for as low as $330 on momondo.

What cabin class options are available on Ontario to Atlanta Hartsfield-Jackson flights?

There are 4 cabin classes available to choose from on Ontario to Atlanta Hartsfield-Jackson flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

How have Ontario to Atlanta flight prices changed over time?

As of December 2025, prices for Ontario to Atlanta flights are approximately 12% more expensive when compared to flights at the same time last year.

When to book flights from Ontario to Atlanta

Are you open to changing your travel dates? Check out the ideal times to fly from Ontario to Atlanta according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Ontario to Atlanta (ONT to ATL) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Ontario to Atlanta

Best Price Found

$204

Fastest flight time

4h 03m

Direct flights

Every day

Airports in Atlanta

1 airport
The best one-way flight to Atlanta from Ontario in the past 72 hours is $204. The best round-trip flight deal from Ontario to Atlanta found on momondo in the last 72 hours is $406.
The fastest flight from Ontario to Atlanta takes 4h 03m
Direct flights go from Ontario to Atlanta every day.
There is 1 airport in Atlanta. From Ontario there are direct flights to Atlanta Hartsfield-Jackson (ATL).
Search flight deals

  • How far is Ontario to Atlanta Hartsfield-Jackson by plane?

    A flight from Ontario to Atlanta Hartsfield-Jackson will travel around 1897.6 mi. Flights usually cover this in 4h 03m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from Ontario Airport to Atlanta Hartsfield-Jackson Airport?

    Prices for flights from Ontario Airport to Atlanta Hartsfield-Jackson Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Ontario Airport to Atlanta Hartsfield-Jackson Airport?

  • How old do you have to be to fly from Ontario Airport to Atlanta Hartsfield-Jackson Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ontario Airport to Atlanta Hartsfield-Jackson Airport.

  • What documentation or ID do you need to fly to Atlanta Hartsfield-Jackson Airport?

    The required travel and health documents for your Atlanta Hartsfield-Jackson Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Atlanta Hartsfield-Jackson Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular plane model from Ontario to Atlanta?

  • What is the most popular airline from Ontario to Atlanta?

Best airlines flying from Ontario to Atlanta

Compare and see reviews for airlines that fly from Ontario to Atlanta with momondo
Airline
Rating
Free Cancellation
Price
Spirit AirlinesPriceFrom $79Free CancellationRating
6.3
8,210 reviews
Search Spirit Airlines flights
FrontierPriceFrom $147Free CancellationRating
5.7
3,064 reviews
Search Frontier flights
American AirlinesPriceFrom $242Free CancellationRating
7.2
11,070 reviews
Search American Airlines flights
United AirlinesPriceFrom $286Free CancellationRating
7.4
9,114 reviews
Search United Airlines flights
DeltaPriceFrom $315Free CancellationRating
7.9
8,017 reviews
Search Delta flights
SouthwestPriceFrom $329Free CancellationRating
8.0
4,256 reviews
Search Southwest flights

  • Delta Flights From Ontario to Atlanta

    Delta operates around 19 flights from Ontario to Atlanta every week. The average price of these flights found in the last 72 hours has been $524, but momondo users have found Delta deals from Ontario to Atlanta from as low as $315 round-trip. Delta has been scored 7.9/10 in 8,017 reviews.

  • United Airlines Flights From Ontario to Atlanta

    United Airlines (7.4/10 from 9,114 reviews) operates around 6 flights from Ontario to Atlanta in any given week. The average United Airlines airfare for this route is around $542, with deals from around $286 rare but found on momondo. Referenced prices are for round-trip Ontario to Atlanta flight searches in the last 72 hours.

Traveling to a place near Atlanta?

Book flights to Atlanta if you plan to visit one of these locations
Helen
Marietta
McDonough
Duluth
Blue Ridge
Warner Robins
Lawrenceville
Stone Mountain
Dahlonega
Cartersville
Covington
Auburn
Norcross
Gadsden
Conyers
Kennesaw
Newnan
La Grange
Lithonia
Gainesville

Why use momondo?

Why should I use momondo to find a flight deal from Ontario to Atlanta?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Ontario to Atlanta. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Ontario to Atlanta with flexible booking policies on momondo?

momondo does allow users to show only those flights to Atlanta from Ontario which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Ontario to Atlanta?

momondo provides multiple filters to help you find the best flight to Atlanta from Ontario. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Ontario to Atlanta right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Atlanta, momondo offers a useful price alert feature which will track prices for flights to Atlanta from Ontario and alert you when they change.

An easier way to manage your Atlanta trip

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ter 1/27
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