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Cheap flights from Ontario to Atlanta from $80

1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Ontario to Atlanta

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
2:30 pm - 5:00 amONT  Ontario-ATL Atlanta Hartsfield-Jackson
11h 30m1 stop Las Vegas Harry Reid Intl
Frontier Logo
9:05 am - 10:31 amATL  Atlanta Hartsfield-Jackson-ONT Ontario
28h 26m1 stop Las Vegas Harry Reid Intl
$305Frontier
Mon, Sep 28 - Tue, Oct 13
Frontier Logo
8:35 pm - 9:24 amONT  Ontario-ATL Atlanta Hartsfield-Jackson
9h 49m2 stops Las Vegas Harry Reid Intl Houston George Bush Intcntl
Frontier Logo
7:57 pm - 11:51 pmATL  Atlanta Hartsfield-Jackson-ONT Ontario
6h 54m1 stop Denver Intl
$305Frontier
Fri, Nov 13 - Sat, Nov 14
Multiple Airlines Logo
2:30 pm - 5:00 amONT  Ontario-ATL Atlanta Hartsfield-Jackson
11h 30m1 stop Las Vegas Harry Reid Intl
Multiple Airlines Logo
6:10 pm - 11:54 pmATL  Atlanta Hartsfield-Jackson-ONT Ontario
8h 44m1 stop Portland
$321Multiple Airlines
Fri, Oct 2 - Mon, Oct 5
Multiple Airlines Logo
7:12 am - 3:32 pmONT  Ontario-ATL Atlanta Hartsfield-Jackson
29h 20m1 stop Portland
Multiple Airlines Logo
9:18 pm - 4:59 pmATL  Atlanta Hartsfield-Jackson-ONT Ontario
22h 41m1 stop Las Vegas Harry Reid Intl
$325Multiple Airlines
Fri, Oct 2 - Sun, Oct 4
Southwest Logo
12:45 pm - 9:25 pmONT  Ontario-ATL Atlanta Hartsfield-Jackson
5h 40m1 stop Houston Hobby
Southwest Logo
11:45 am - 4:20 pmATL  Atlanta Hartsfield-Jackson-ONT Ontario
7h 35m1 stop Denver Intl
$393Southwest
Wed, Jan 6 - Wed, Jan 13
Southwest Logo
7:40 am - 6:40 pmONT  Ontario-ATL Atlanta Hartsfield-Jackson
8h 00m2 stops Phoenix Sky Harbor Intl Dallas Love Field
Southwest Logo
6:30 am - 10:15 amATL  Atlanta Hartsfield-Jackson-ONT Ontario
6h 45m1 stop Denver Intl
$398Southwest
Wed, Jan 6 - Wed, Jan 13
American Airlines Logo
6:00 am - 10:15 pmONT  Ontario-ATL Atlanta Hartsfield-Jackson
13h 15m1 stop Chicago O'Hare Intl
American Airlines Logo
12:54 pm - 11:19 pmATL  Atlanta Hartsfield-Jackson-ONT Ontario
13h 25m1 stop Chicago O'Hare Intl
$465American Airlines
Wed, Jan 6 - Wed, Jan 13
Delta Logo
12:16 pm - 7:27 pmONT  Ontario-ATL Atlanta Hartsfield-Jackson
4h 11mnonstop
Delta Logo
9:30 am - 11:06 amATL  Atlanta Hartsfield-Jackson-ONT Ontario
4h 36mnonstop
$469Delta
Fri, Oct 16 - Tue, Oct 20
Delta Logo
12:16 pm - 7:27 pmONT  Ontario-ATL Atlanta Hartsfield-Jackson
4h 11mnonstop
Delta Logo
9:30 am - 11:06 amATL  Atlanta Hartsfield-Jackson-ONT Ontario
4h 36mnonstop
$469Delta
Fri, Oct 30 - Sat, Oct 31
American Airlines Logo
11:59 pm - 10:14 amONT  Ontario-ATL Atlanta Hartsfield-Jackson
7h 15m1 stop Dallas/Fort Worth
American Airlines Logo
7:00 am - 1:19 pmATL  Atlanta Hartsfield-Jackson-ONT Ontario
9h 19m1 stop Dallas/Fort Worth
$489American Airlines
Mon, Nov 23 - Tue, Dec 1

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Frontier flights from Ontario to Atlanta

Our best Frontier deals on Ontario to Atlanta flight tickets
Frontier
Sep 27
ONT11:45 amOntario
25h 10m
1 stop
ATL3:55 pmAtlanta Hartsfield-Jackson
Nov 1
ATL9:32 pmAtlanta Hartsfield-Jackson
21h 49m
1 stop
ONT4:21 pmOntario
$305
Frontier
Nov 18
ONT6:25 amOntario
6h 20m
1 stop
ATL3:45 pmAtlanta Hartsfield-Jackson
Dec 6
ATL10:59 pmAtlanta Hartsfield-Jackson
12h 22m
1 stop
ONT8:21 amOntario
$306
Frontier
Dec 3
ONT8:32 pmOntario
7h 17m
1 stop
ATL6:49 amAtlanta Hartsfield-Jackson
Dec 6
ATL10:45 amAtlanta Hartsfield-Jackson
22h 30m
1 stop
ONT6:15 amOntario
$307

momondo Fare Finder

 
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

Cheapest round-trip

OntarioAtlanta

ONT Ontario - ATL Atlanta Hartsfield-Jackson

ONTATL

Ontario

Mon 9/28

2:30 pm-5:00 am

1 stop11h 30m

Atlanta Hartsfield-Jackson

Tue 10/13

9:05 am-10:31 am

1 stop28h 26m

$305

OntarioAtlanta

ONT Ontario - ATL Atlanta Hartsfield-Jackson

ONTATL

Ontario

Fri 11/13

8:35 pm-9:24 am

2 stops9h 49m

Atlanta Hartsfield-Jackson

Sat 11/14

7:57 pm-11:51 pm

1 stop6h 54m

$305

OntarioAtlanta

ONT Ontario - ATL Atlanta Hartsfield-Jackson

ONTATL

Ontario

Fri 10/2

2:30 pm-5:00 am

1 stop11h 30m

Atlanta Hartsfield-Jackson

Mon 10/5

6:10 pm-11:54 pm

1 stop8h 44m

$321

OntarioAtlanta

ONT Ontario - ATL Atlanta Hartsfield-Jackson

ONTATL

Ontario

Fri 10/2

7:12 am-3:32 pm

1 stop29h 20m

Atlanta Hartsfield-Jackson

Sun 10/4

9:18 pm-4:59 pm

1 stop22h 41m

$325

OntarioAtlanta

ONT Ontario - ATL Atlanta Hartsfield-Jackson

ONTATL

Ontario

Wed 1/6

12:45 pm-9:25 pm

1 stop5h 40m

Atlanta Hartsfield-Jackson

Wed 1/13

11:45 am-4:20 pm

1 stop7h 35m

$393

OntarioAtlanta

ONT Ontario - ATL Atlanta Hartsfield-Jackson

ONTATL

Ontario

Wed 1/6

7:40 am-6:40 pm

2 stops8h 00m

Atlanta Hartsfield-Jackson

Wed 1/13

6:30 am-10:15 am

1 stop6h 45m

$398

OntarioAtlanta

ONT Ontario - ATL Atlanta Hartsfield-Jackson

ONTATL

Ontario

Wed 1/6

6:00 am-10:15 pm

1 stop13h 15m

Atlanta Hartsfield-Jackson

Wed 1/13

12:54 pm-11:19 pm

1 stop13h 25m

$465
Quickest round-trip

OntarioAtlanta

ONT Ontario - ATL Atlanta Hartsfield-Jackson

ONTATL

Ontario

Fri 10/16

12:16 pm-7:27 pm

Nonstop4h 11m

Atlanta Hartsfield-Jackson

Tue 10/20

9:30 am-11:06 am

Nonstop4h 36m

$469

OntarioAtlanta

ONT Ontario - ATL Atlanta Hartsfield-Jackson

ONTATL

Ontario

Fri 10/30

12:16 pm-7:27 pm

Nonstop4h 11m

Atlanta Hartsfield-Jackson

Sat 10/31

9:30 am-11:06 am

Nonstop4h 36m

$469

OntarioAtlanta

ONT Ontario - ATL Atlanta Hartsfield-Jackson

ONTATL

Ontario

Mon 11/23

11:59 pm-10:14 am

1 stop7h 15m

Atlanta Hartsfield-Jackson

Tue 12/1

7:00 am-1:19 pm

1 stop9h 19m

$489

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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 typical price of a round-trip flight between Ontario and Atlanta?

Prices are currently low for flights on this route.

Typical prices usually range from $377 to $644.
The lowest price recently found on this route was $305.

What is the cheapest month to fly to Atlanta?

The month of February is, on average, the cheapest month to fly to Atlanta from Ontario, with most prices found around $383. If you aren’t able to travel to Atlanta during the month of February, then flying in November is also cheap. Prices for this month can be found on momondo for an average of $399.

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 $431. 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 $560.

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

The cheapest time of day to fly to Atlanta is at noon when flights can be purchased for as low as $353. Flights to Atlanta are more costly in the morning, with an average ticket price of $529. 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 from Ontario 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 $468 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 $384 on momondo.

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

There are 4 cabin classes available to choose from on Ontario to Atlanta 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 September 2026, prices for Ontario to Atlanta flights are approximately 50% 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

$80

Fastest flight time

4h 04m

Direct flights

Every day

Airports in Atlanta

1 airport
The best one-way flight to Atlanta from Ontario in the past 72 hours is $80. The best round-trip flight deal from Ontario to Atlanta found on momondo in the last 72 hours is $305.
The fastest flight from Ontario to Atlanta takes 4h 04m
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

Frequently asked questions about flying from Ontario to Atlanta

  • 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 04m, 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
FrontierPriceFrom $151Free CancellationRating
5.6
2,603 reviews
Search Frontier flights
American AirlinesPriceFrom $230Free CancellationRating
7.1
12,050 reviews
Search American Airlines flights
SouthwestPriceFrom $340Free CancellationRating
8.0
4,191 reviews
Search Southwest flights
JetBluePriceFrom $378Free CancellationRating
7.1
3,037 reviews
Search JetBlue flights
DeltaPriceFrom $398Free CancellationRating
7.8
8,566 reviews
Search Delta flights

  • Delta Flights From Ontario to Atlanta

    Delta operates around 7 flights from Ontario to Atlanta every week. The average price of these flights found in the last 72 hours has been $555, but momondo users have found Delta deals from Ontario to Atlanta from as low as $398 round-trip. Delta has been scored 7.8/10 in 8,568 reviews.

Traveling to a place near Atlanta?

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

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.

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