Cheap flights from Ontario to Atlanta from $98
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 12/8. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Fly from
Fly to
Route
Depart
Return
OntarioAtlanta
ONT Ontario - ATL Atlanta Hartsfield-Jackson
ONTATL
Ontario
Sun 11/22
7:30 am-12:21 am
1 stop13h 51m
Atlanta Hartsfield-Jackson
Mon 11/30
9:46 am-2:51 pm
1 stop8h 05m
OntarioAtlanta
ONT Ontario - ATL Atlanta Hartsfield-Jackson
ONTATL
Ontario
Wed 1/6
1:50 pm-10:45 pm
1 stop5h 55m
Atlanta Hartsfield-Jackson
Mon 1/11
4:50 pm-8:50 pm
1 stop7h 00m
OntarioAtlanta
ONT Ontario - ATL Atlanta Hartsfield-Jackson
ONTATL
Ontario
Sat 11/21
7:30 am-12:21 am
1 stop13h 51m
Atlanta Hartsfield-Jackson
Sun 11/22
10:20 am-12:14 am
2 stops16h 54m
OntarioAtlanta
ONT Ontario - ATL Atlanta Hartsfield-Jackson
ONTATL
Ontario
Mon 11/16
7:50 am-7:30 pm
1 stop8h 40m
Atlanta Hartsfield-Jackson
Wed 11/18
6:00 am-11:55 am
2 stops8h 55m
OntarioAtlanta
ONT Ontario - ATL Atlanta Hartsfield-Jackson
ONTATL
Ontario
Wed 12/2
8:05 am-7:50 pm
1 stop8h 45m
Atlanta Hartsfield-Jackson
Mon 12/7
7:00 am-10:59 pm
1 stop18h 59m
OntarioAtlanta
ONT Ontario - ATL Atlanta Hartsfield-Jackson
ONTATL
Ontario
Thu 10/29
9:41 am-9:59 pm
1 stop9h 18m
Atlanta Hartsfield-Jackson
Mon 11/2
7:52 am-4:19 pm
1 stop11h 27m
OntarioAtlanta
ONT Ontario - ATL Atlanta Hartsfield-Jackson
ONTATL
Ontario
Wed 12/16
6:00 am-8:42 am
2 stops23h 42m
Atlanta Hartsfield-Jackson
Tue 1/5
7:25 am-10:48 pm
2 stops18h 23m
OntarioAtlanta
ONT Ontario - ATL Atlanta Hartsfield-Jackson
ONTATL
Ontario
Wed 11/11
6:00 am-9:38 pm
2 stops12h 38m
Atlanta Hartsfield-Jackson
Fri 11/13
10:49 pm-12:17 pm
2 stops16h 28m
OntarioAtlanta
ONT Ontario - ATL Atlanta Hartsfield-Jackson
ONTATL
Ontario
Fri 10/30
6:56 pm-7:30 am
1 stop9h 34m
Atlanta Hartsfield-Jackson
Thu 11/5
6:55 am-10:35 am
1 stop6h 40m
OntarioAtlanta
ONT Ontario - ATL Atlanta Hartsfield-Jackson
ONTATL
Ontario
Fri 11/13
2:22 pm-11:49 pm
1 stop6h 27m
Atlanta Hartsfield-Jackson
Sat 11/14
6:00 am-1:31 pm
1 stop10h 31m
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 $354 to $573.The lowest price recently found on this route was $325.
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 $384. 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 $439.
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 $444. 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 $566.
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 $377. Flights to Atlanta are more costly in the morning, with an average ticket price of $534. 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 $476 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 $386 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.
What is the cheapest airline that flies from Ontario to Atlanta Hartsfield-Jackson?
Southwest and Alaska Airlines are the most popular carriers operating from Ontario to Atlanta Hartsfield-Jackson
What airlines fly to Atlanta?
Frontier, Delta and American Airlines are the top three most popular airlines that fly to Atlanta from Ontario according to our data. Frontier is the first choice among our users, with 37% of people opting to fly with this airline when traveling to Atlanta. Keep in mind that there are 7 different airlines that fly to Atlanta on a routine basis, so you have a few additional options to choose from.
How many flights depart from Ontario to Atlanta on average per day?
The number of flights available between Ontario and Atlanta is 12 per day as of October 2026. The most frequent departure time is 7:00AM, with 47% of daily flights leaving at noon.
How many flights depart from Ontario to Atlanta on average per week?
89 flights are operational weekly from Ontario to Atlanta as of October 2026. The most popular departure day for this route is Mon, with 17% of flights per week taking off on this day.
When to book flights from Ontario to Atlanta
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
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 3h 57m, 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?
As of October 2026, there are 5 operators available to choose from 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?
momondo data reveals that the most frequently booked plane model on the route from Ontario to Atlanta is Airbus A321-100/200, representing 24.22% of all bookings. The subsequent popular models are Airbus A321neo at 15.31%, Airbus A320neo at 5.72%, and Airbus A318/A319/A320/A321 at 5.04%.
What is the most popular airline from Ontario to Atlanta?
Based on momondo bookings for flights between Ontario and Atlanta, the leading airline is Delta, making up 56% of the total bookings. Other popular airlines include Frontier with 24%, Southwest with 16%, and American Airlines with 3%.
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 | ||
|---|---|---|---|---|---|
| PriceFrom $162 | Free Cancellation | Rating 5.6 2,550 reviews | |||
| PriceFrom $230 | Free Cancellation | Rating 7.0 12,145 reviews | |||
| PriceFrom $346 | Free Cancellation | Rating 7.9 4,222 reviews | |||
| PriceFrom $378 | Free Cancellation | Rating 7.1 3,049 reviews | |||
| PriceFrom $399 | Free Cancellation | Rating 7.8 8,645 reviews |
Delta Flights From Ontario to Atlanta
Delta operates around 16 flights from Ontario to Atlanta every week. The average price of these flights found in the last 72 hours has been $561, but momondo users have found Delta deals from Ontario to Atlanta from as low as $399 round-trip. Delta has been scored 7.8/10 in 8,646 reviews.
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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.