Cheap flights from Ontario to Atlanta from $124
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 8/18. 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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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 $329. 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 $345.
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 $373. 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 $494.
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 $316. Flights to Atlanta are more costly in the morning, with an average ticket price of $465. 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 15 weeks ahead of your departure date. In general, you can expect to find flights to Atlanta for around $399 when searching 15 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.
What is the cheapest airline that flies from Ontario to Atlanta Hartsfield-Jackson?
Frontier, United Airlines, and Alaska Airlines are the most popular carriers operating from Ontario to Atlanta Hartsfield-Jackson
What airlines fly to Atlanta?
Delta, Spirit Airlines and Frontier are the top three most popular airlines that fly to Atlanta from Ontario according to our data. Delta is the first choice among our users, with 32% 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 11 per day as of June 2025. The most frequent departure time is 7:00AM, with 70% of daily flights leaving at noon.
How many flights depart from Ontario to Atlanta on average per week?
80 flights are operational weekly from Ontario to Atlanta as of June 2025. The most popular departure day for this route is Wed, with 16% 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
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 29m, 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 June 2025, there are 6 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 18.19% of all bookings. The subsequent popular models are Airbus A321neo at 17.77%, Airbus A320neo at 9.73%, and Boeing 737 MAX 9 at 4.15%.
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 47% of the total bookings. Other popular airlines include Frontier with 30%, American Airlines with 12%, and Southwest with 8%.
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 $67 | Free Cancellation | Rating 6.3 8,052 reviews | |||
| PriceFrom $142 | Free Cancellation | Rating 5.9 3,295 reviews | |||
| PriceFrom $257 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $257 | Free Cancellation | Rating 8.0 7,950 reviews | |||
| PriceFrom $286 | Free Cancellation | Rating 7.4 8,790 reviews | |||
| PriceFrom $338 | Free Cancellation | Rating 8.0 4,287 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 $491, but momondo users have found Delta deals from Ontario to Atlanta from as low as $257 round-trip. Delta has been scored 8.0/10 in 7,950 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.