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Cheap flights from Ontario to Atlanta from $55

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 8/5. 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

Frontier Logo
7:00 am - 8:31 pmONT-ATL
10h 31m1 stop
Frontier Logo
3:24 pm - 7:14 pmATL-ONT
6h 50m1 stop
$117Frontier
Find Deal
Sat, Aug 9 - Fri, Aug 15
Frontier Logo
6:00 am - 8:21 pmONT-ATL
11h 21m1 stop
Frontier Logo
3:18 pm - 7:14 pmATL-ONT
6h 56m1 stop
$124Frontier
Find Deal
Thu, Jul 31 - Thu, Aug 7
Frontier Logo
7:00 am - 8:29 pmONT-ATL
10h 29m1 stop
Frontier Logo
10:30 am - 4:20 pmATL-ONT
8h 50m1 stop
$125Frontier
Find Deal
Sat, Jul 26 - Sat, Aug 2
Frontier Logo
7:00 am - 8:21 pmONT-ATL
10h 21m1 stop
Frontier Logo
10:30 am - 4:20 pmATL-ONT
8h 50m1 stop
$133Frontier
Find Deal
Tue, Jul 15 - Tue, Jul 22
Frontier Logo
7:00 am - 8:21 pmONT-ATL
10h 21m1 stop
Frontier Logo
10:30 am - 4:20 pmATL-ONT
8h 50m1 stop
$134Frontier
Find Deal
Wed, Jul 23 - Sat, Aug 2
Frontier Logo
7:00 am - 8:29 pmONT-ATL
10h 29m1 stop
Frontier Logo
10:30 am - 4:20 pmATL-ONT
8h 50m1 stop
$135Frontier
Find Deal
Sat, Jul 26 - Tue, Jul 29
Frontier Logo
5:09 pm - 6:10 amONT-ATL
10h 01m1 stop
Frontier Logo
7:32 pm - 11:50 pmATL-ONT
7h 18m1 stop
$137Frontier
Find Deal
Fri, Aug 22 - Mon, Aug 25
Frontier Logo
6:00 am - 8:21 pmONT-ATL
11h 21m1 stop
Frontier Logo
3:18 pm - 7:14 pmATL-ONT
6h 56m1 stop
$140Frontier
Find Deal
Fri, Jul 18 - Thu, Jul 31
Frontier Logo
5:09 pm - 6:05 amONT-ATL
9h 56m1 stop
Frontier Logo
7:32 pm - 11:50 pmATL-ONT
7h 18m1 stop
$143Frontier
Find Deal
Thu, Aug 21 - Mon, Aug 25
Frontier Logo
5:21 pm - 6:10 amONT-ATL
9h 49m1 stop
Frontier Logo
7:54 pm - 11:50 pmATL-ONT
6h 56m1 stop
$156Frontier
Find Deal
Tue, Jul 29 - Tue, Aug 5

Frontier flights from Ontario to Atlanta

Our best Frontier deals on Ontario to Atlanta flight tickets
Frontier
Aug 9
ONT7:00 amOntario
10h 31m
1 stop
ATL8:31 pmAtlanta Hartsfield-Jackson
Aug 15
ATL3:24 pmAtlanta Hartsfield-Jackson
6h 50m
1 stop
ONT7:14 pmOntario
Frontier
Jul 31
ONT6:00 amOntario
11h 21m
1 stop
ATL8:21 pmAtlanta Hartsfield-Jackson
Aug 7
ATL3:18 pmAtlanta Hartsfield-Jackson
6h 56m
1 stop
ONT7:14 pmOntario
Frontier
Jul 26
ONT7:00 amOntario
10h 29m
1 stop
ATL8:29 pmAtlanta Hartsfield-Jackson
Aug 2
ATL10:30 amAtlanta Hartsfield-Jackson
8h 50m
1 stop
ONT4:20 pmOntario

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 September is, on average, the cheapest month to fly to Atlanta from Ontario, with most prices found around $330. If you aren’t able to travel to Atlanta during the month of September, then flying in October is also cheap. Prices for this month can be found on momondo for an average of $349.

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 $369. 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 $486.

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 $310. Flights to Atlanta are more costly in the morning, with an average ticket price of $459. 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 $400 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 $337 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 July 2025, prices for Ontario to Atlanta flights are approximately 5% 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

$55

Fastest flight time

6h 41m

Direct flights

Every day

Airports in Atlanta

1 airport
The best one-way flight to Atlanta from Ontario in the past 72 hours is $55. The best round-trip flight deal from Ontario to Atlanta found on momondo in the last 72 hours is $117.
The fastest flight from Ontario to Atlanta takes 6h 41m
Direct flights go from Ontario to Atlanta every day.
There is 1 airport near Atlanta: Atlanta Hartsfield-Jackson (ATL)

  • 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 6h 41m, 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 $67Free CancellationRating
6.3
8,094 reviews
Search Spirit Airlines flights
FrontierPriceFrom $142Free CancellationRating
5.9
3,284 reviews
Search Frontier flights
DeltaPriceFrom $255Free CancellationRating
8.0
7,983 reviews
Search Delta flights
American AirlinesPriceFrom $258Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
United AirlinesPriceFrom $286Free CancellationRating
7.4
8,861 reviews
Search United Airlines flights
SouthwestPriceFrom $340Free CancellationRating
8.0
4,270 reviews
Search Southwest flights
  • Delta Flights From Ontario to Atlanta

    Delta operates around 8 flights from Ontario to Atlanta every week. The average price of these flights found in the last 72 hours has been $486, but momondo users have found Delta deals from Ontario to Atlanta from as low as $255 round-trip. Delta has been scored 8.0/10 in 7,982 reviews.

  • United Airlines Flights From Ontario to Atlanta

    United Airlines (7.4/10 from 8,861 reviews) operates around 4 flights from Ontario to Atlanta in any given week. The average United Airlines airfare for this route is around $474, 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
Duluth
McDonough
Blue Ridge
Warner Robins
Athens
Lawrenceville
Norcross
Stone Mountain
Dahlonega
Auburn
Cartersville
Gadsden
Covington
Conyers
Newnan
La Grange
Gainesville
College Park

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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1 adult
Tue 7/8
Tue 7/15

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