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Cheap flights from Ontario to Atlanta from $75

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
3:40 pm - 5:21 pmONT  Ontario-ATL Atlanta Hartsfield-Jackson
46h 41m2 stops Las Vegas Harry Reid Intl Chicago O'Hare Intl
Frontier Logo
7:38 pm - 10:30 amATL  Atlanta Hartsfield-Jackson-ONT Ontario
17h 52m1 stop Denver Intl
$294Frontier
Thu, Sep 3 - Wed, Sep 9
Frontier Logo
3:40 pm - 5:21 pmONT  Ontario-ATL Atlanta Hartsfield-Jackson
46h 41m2 stops Las Vegas Harry Reid Intl Chicago O'Hare Intl
Frontier Logo
8:30 pm - 10:30 amATL  Atlanta Hartsfield-Jackson-ONT Ontario
17h 00m1 stop Denver Intl
$294Frontier
Thu, Sep 3 - Tue, Sep 8
Multiple Airlines Logo
7:12 am - 3:16 pmONT  Ontario-ATL Atlanta Hartsfield-Jackson
29h 04m1 stop Portland
Multiple Airlines Logo
7:59 pm - 11:47 pmATL  Atlanta Hartsfield-Jackson-ONT Ontario
6h 48m1 stop Denver Intl
$323Multiple Airlines
Sat, Sep 19 - Sat, Sep 26
Multiple Airlines Logo
11:52 am - 11:59 pmONT  Ontario-ATL Atlanta Hartsfield-Jackson
9h 07m1 stop Denver Intl
Multiple Airlines Logo
6:10 pm - 11:54 pmATL  Atlanta Hartsfield-Jackson-ONT Ontario
8h 44m1 stop Portland
$323Multiple Airlines
Wed, Oct 21 - Mon, Oct 26
Southwest Logo
6:10 am - 2:55 pmONT  Ontario-ATL Atlanta Hartsfield-Jackson
5h 45m1 stop Las Vegas Harry Reid Intl
Southwest Logo
7:25 pm - 12:05 amATL  Atlanta Hartsfield-Jackson-ONT Ontario
7h 40m1 stop Chicago Midway
$377Southwest
Wed, Feb 3 - Thu, Feb 11
Southwest Logo
6:10 am - 5:50 pmONT  Ontario-ATL Atlanta Hartsfield-Jackson
8h 40m2 stops Phoenix Sky Harbor Intl Houston Hobby
Southwest Logo
5:10 pm - 9:20 pmATL  Atlanta Hartsfield-Jackson-ONT Ontario
7h 10m1 stop Chicago Midway
$382Southwest
Wed, Oct 7 - Sat, Oct 10
Delta Logo
7:05 am - 2:15 pmONT  Ontario-ATL Atlanta Hartsfield-Jackson
4h 10mnonstop
Delta Logo
5:15 pm - 6:41 pmATL  Atlanta Hartsfield-Jackson-ONT Ontario
4h 26mnonstop
$448Delta
Sat, Sep 19 - Sat, Sep 26
Delta Logo
12:17 pm - 7:30 pmONT  Ontario-ATL Atlanta Hartsfield-Jackson
4h 13mnonstop
Delta Logo
4:40 pm - 6:07 pmATL  Atlanta Hartsfield-Jackson-ONT Ontario
4h 27mnonstop
$449Delta
Tue, Sep 22 - Mon, Sep 28
American Airlines Logo
1:05 pm - 9:59 pmONT  Ontario-ATL Atlanta Hartsfield-Jackson
5h 54m1 stop Phoenix Sky Harbor Intl
American Airlines Logo
6:00 am - 9:35 amATL  Atlanta Hartsfield-Jackson-ONT Ontario
6h 35m1 stop Dallas/Fort Worth
$469American Airlines
Fri, Oct 23 - Sat, Oct 31
American Airlines Logo
1:05 pm - 10:15 pmONT  Ontario-ATL Atlanta Hartsfield-Jackson
6h 10m1 stop Phoenix Sky Harbor Intl
American Airlines Logo
6:00 am - 9:29 amATL  Atlanta Hartsfield-Jackson-ONT Ontario
6h 29m1 stop Dallas/Fort Worth
$469American Airlines
Sat, Sep 19 - Sat, Sep 26

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Frontier flights from Ontario to Atlanta

Our best Frontier deals on Ontario to Atlanta flight tickets
Frontier
Sep 3
ONT3:40 pmOntario
46h 41m
2 stops
ATL5:21 pmAtlanta Hartsfield-Jackson
Sep 12
ATL6:41 amAtlanta Hartsfield-Jackson
20h 06m
1 stop
ONT11:47 pmOntario
$294
Frontier
Oct 11
ONT12:01 pmOntario
15h 00m
1 stop
ATL6:01 amAtlanta Hartsfield-Jackson
Oct 14
ATL10:07 amAtlanta Hartsfield-Jackson
16h 43m
2 stops
ONT11:50 pmOntario
$295
Frontier
Oct 9
ONT11:52 amOntario
9h 07m
1 stop
ATL11:59 pmAtlanta Hartsfield-Jackson
Oct 11
ATL6:21 pmAtlanta Hartsfield-Jackson
43h 08m
2 stops
ONT10:29 amOntario
$296

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

Thu 9/3

3:40 pm-5:21 pm

2 stops46h 41m

Atlanta Hartsfield-Jackson

Wed 9/9

7:38 pm-10:30 am

1 stop17h 52m

$294

OntarioAtlanta

ONT Ontario - ATL Atlanta Hartsfield-Jackson

ONTATL

Ontario

Thu 9/3

3:40 pm-5:21 pm

2 stops46h 41m

Atlanta Hartsfield-Jackson

Tue 9/8

8:30 pm-10:30 am

1 stop17h 00m

$294

OntarioAtlanta

ONT Ontario - ATL Atlanta Hartsfield-Jackson

ONTATL

Ontario

Sat 9/19

7:12 am-3:16 pm

1 stop29h 04m

Atlanta Hartsfield-Jackson

Sat 9/26

7:59 pm-11:47 pm

1 stop6h 48m

$323

OntarioAtlanta

ONT Ontario - ATL Atlanta Hartsfield-Jackson

ONTATL

Ontario

Wed 10/21

11:52 am-11:59 pm

1 stop9h 07m

Atlanta Hartsfield-Jackson

Mon 10/26

6:10 pm-11:54 pm

1 stop8h 44m

$323

OntarioAtlanta

ONT Ontario - ATL Atlanta Hartsfield-Jackson

ONTATL

Ontario

Wed 2/3

6:10 am-2:55 pm

1 stop5h 45m

Atlanta Hartsfield-Jackson

Thu 2/11

7:25 pm-12:05 am

1 stop7h 40m

$377

OntarioAtlanta

ONT Ontario - ATL Atlanta Hartsfield-Jackson

ONTATL

Ontario

Wed 10/7

6:10 am-5:50 pm

2 stops8h 40m

Atlanta Hartsfield-Jackson

Sat 10/10

5:10 pm-9:20 pm

1 stop7h 10m

$382
Quickest round-trip

OntarioAtlanta

ONT Ontario - ATL Atlanta Hartsfield-Jackson

ONTATL

Ontario

Sat 9/19

7:05 am-2:15 pm

Nonstop4h 10m

Atlanta Hartsfield-Jackson

Sat 9/26

5:15 pm-6:41 pm

Nonstop4h 26m

$448

OntarioAtlanta

ONT Ontario - ATL Atlanta Hartsfield-Jackson

ONTATL

Ontario

Tue 9/22

12:17 pm-7:30 pm

Nonstop4h 13m

Atlanta Hartsfield-Jackson

Mon 9/28

4:40 pm-6:07 pm

Nonstop4h 27m

$449

OntarioAtlanta

ONT Ontario - ATL Atlanta Hartsfield-Jackson

ONTATL

Ontario

Fri 10/23

1:05 pm-9:59 pm

1 stop5h 54m

Atlanta Hartsfield-Jackson

Sat 10/31

6:00 am-9:35 am

1 stop6h 35m

$469

OntarioAtlanta

ONT Ontario - ATL Atlanta Hartsfield-Jackson

ONTATL

Ontario

Sat 9/19

1:05 pm-10:15 pm

1 stop6h 10m

Atlanta Hartsfield-Jackson

Sat 9/26

6:00 am-9:29 am

1 stop6h 29m

$469

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 typical for flights on this route.

Typical prices usually range from $284 to $508.
The lowest price recently found on this route was $294.

What is the cheapest month to fly to Atlanta?

The month of August is, on average, the cheapest month to fly to Atlanta from Ontario, with most prices found around $349. If you aren’t able to travel to Atlanta during the month of August, then flying in February is also cheap. Prices for this month can be found on momondo for an average of $383.

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 $422. 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 $544.

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 $325. Flights to Atlanta are more costly in the morning, with an average ticket price of $519. 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 $451 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 $372 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 August 2026, prices for Ontario to Atlanta flights are approximately 3% cheaper 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

$75

Fastest flight time

4h 05m

Direct flights

Every day

Airports in Atlanta

1 airport
The best one-way flight to Atlanta from Ontario in the past 72 hours is $75. The best round-trip flight deal from Ontario to Atlanta found on momondo in the last 72 hours is $294.
The fastest flight from Ontario to Atlanta takes 4h 05m
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 05m, 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 $150Free CancellationRating
5.6
2,661 reviews
Search Frontier flights
American AirlinesPriceFrom $200Free CancellationRating
7.1
11,979 reviews
Search American Airlines flights
SouthwestPriceFrom $340Free CancellationRating
8.0
4,215 reviews
Search Southwest flights
DeltaPriceFrom $353Free CancellationRating
7.8
8,510 reviews
Search Delta flights
JetBluePriceFrom $378Free CancellationRating
7.1
3,040 reviews
Search JetBlue flights

  • Delta Flights From Ontario to Atlanta

    Delta operates around 13 flights from Ontario to Atlanta every week. The average price of these flights found in the last 72 hours has been $540, but momondo users have found Delta deals from Ontario to Atlanta from as low as $353 round-trip. Delta has been scored 7.8/10 in 8,510 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
Cartersville
Lawrenceville
Douglasville
Kennesaw
College Park
Gainesville
Covington
Conyers
La Grange
Newnan
Dahlonega
Auburn

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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