Cheap flights from Atlanta to Los Angeles from $53
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Atlanta to Los Angeles departing on 8/14. 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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Frontier flights from Atlanta to Ontario
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How to get the cheapest flight ticket from Atlanta to Ontario
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 Ontario?
In general, June is the cheapest month to fly from Atlanta to Ontario. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $295. If you aren’t able to travel during the month of June, then book flights to Ontario from Atlanta during February instead. Flights to Ontario in February, while not as cheap as those in June, still average around $298.
What is the cheapest day to depart on your flight to Ontario?
The cheapest day to depart on your flight to Ontario is on a Saturday when prices can be found for as low as $441. This is often the case because there is less demand to fly during this day of the week. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from Atlanta to Ontario for around $594.
What is the cheapest time of day to depart on your flight to Ontario?
At noon is the cheapest time of day to fly from Atlanta to Ontario when you can find flight prices for as low as $412. Flying to Ontario at noon is an ideal time because this is during off-peak travel hours. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are $478 on average. Flights to Ontario from Atlanta in the morning are generally more expensive because this time of day is more convenient for travelers’ schedules.
What is the cheapest Atlanta Hartsfield-Jackson to Ontario flight route?
Fly from Atlanta Hartsfield-Jackson to Ontario for the best Atlanta Hartsfield-Jackson - Ontario flight prices
How far in advance should I book a flight to Ontario?
You are more likely to see cheaper flights to Ontario from Atlanta when booking weeks ahead of your departure date. In general, you can expect to find flights to Ontario for around $365 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Ontario from Atlanta for as low as $255 on momondo.
What cabin class options are available on Atlanta Hartsfield-Jackson to Ontario flights?
There are 4 cabin classes available to choose from on Atlanta Hartsfield-Jackson to Ontario 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 Atlanta Hartsfield-Jackson to Ontario?
Frontier is the most popular carrier operating from Atlanta Hartsfield-Jackson to Ontario
What airlines fly to Ontario?
Delta, Spirit Airlines and Frontier are the top three most popular airlines that fly to Ontario from Atlanta according to our data. Delta is the first choice among our users, with 33% of people opting to fly with this airline when traveling to Ontario. Keep in mind that there are 8 different airlines that fly to Ontario on a routine basis, so you have a few additional options to choose from.
How many flights depart from Atlanta to Ontario on average per day?
3 flights are operational daily from Atlanta to Ontario as of July 2025. The most popular departure time for this route is 6:00PM, with 80% of flights per day taking off in the evening.
How many flights depart from Atlanta to Ontario on average per week?
The number of flights available between Atlanta and Ontario is 27 per week as of July 2025. The most frequent departure day is Thu, with 37% of weekly flights leaving on this day.
When to book flights from Atlanta to Ontario
Cheap Atlanta to Ontario (ATL to ONT) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Atlanta to Ontario
Best Price Found | $53 |
|---|---|
Fastest flight time | 6h 50m |
Direct flights | Mon, Tue, Wed, Fri, Sat and Sun |
Airports in Ontario | 1 airport |
How far is Atlanta Hartsfield-Jackson to Ontario by plane?
Atlanta Hartsfield-Jackson and Ontario are 1897.6 mi apart from one another. Flights usually cover this in 6h 50m, depending on flying conditions and air traffic around both airports.
When did momondo last update prices for flights from Atlanta Hartsfield-Jackson Airport to Ontario Airport?
Prices for flights from Atlanta Hartsfield-Jackson Airport to Ontario Airport are updated daily.
How many operators does momondo search for flights from Atlanta Hartsfield-Jackson Airport to Ontario Airport?
As of July 2025, there are 5 operators available to choose from for flights from Atlanta Hartsfield-Jackson Airport to Ontario Airport.
How old do you have to be to fly from Atlanta Hartsfield-Jackson Airport to Ontario Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Atlanta Hartsfield-Jackson Airport to Ontario Airport.
What documentation or ID do you need to fly to Ontario Airport?
The necessary travel and health documents for your Ontario Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from Atlanta to Ontario?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from Atlanta to Ontario is Airbus A321-100/200 (34.35% of total bookings). The next most popular plane models are Airbus A321neo (27.21%), Airbus A320neo (12.24%), and Airbus A320 (sharklets) (6.46%).
What is the most popular airline from Atlanta to Ontario?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Atlanta to Ontario is Delta (43% of total bookings). The next most popular airlines are Frontier (38%), Southwest (9%), and American Airlines (8%).
Best airlines flying from Atlanta to Ontario
Compare and see reviews for airlines that fly from Atlanta to Ontario with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $130 | Free Cancellation | Rating 5.9 3,284 reviews | |||
| PriceFrom $131 | Free Cancellation | Rating 6.3 8,094 reviews | |||
| PriceFrom $239 | Free Cancellation | Rating 8.0 7,983 reviews | |||
| PriceFrom $256 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $325 | Free Cancellation | Rating 8.0 4,270 reviews |
Delta Flights From Atlanta to Ontario
Delta flies from Atlanta to Ontario around 6 times per week, with 7,983 momondo users rating the airline 8.0/10. The cheapest Delta deal from Atlanta to Ontario in the last 72 hours was $239 (round-trip), much lower than the average airfare cost of $472 for Delta flights on this route.
Why use momondo?
Why should I use momondo to find a flight deal from Atlanta to Ontario?
momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Atlanta to Ontario. momondo saves you time and could save you money on your trip.
Can I find flights from Atlanta to Ontario with flexible booking policies on momondo?
All flight searches from Atlanta to Ontario on momondo can be filtered to show those which offer flexible booking policies.
How can momondo help me find flights from Atlanta to Ontario?
Once all potential Atlanta to Ontario flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.
I’m not ready to book a flight from Atlanta to Ontario right now. Can momondo alert me if prices change?
Yes momondo offers price alerts on flights to Ontario from Atlanta. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.