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Uncover the best deals on Atlanta to Ontario flights by comparing fares from hundreds of airlines and agencies.
Good to Know: Cheapest and Fastest ATL - ONT Flights
Useful information for finding best airline tickets from Hartsfield Jackson Atlanta International to Ontario International on your next trip.
Cheapest Round Trip Flight
$254
Frontier Airlines
• 1 stop
• 23h 45m
Sep 29 – Oct 02
The cheapest round trip flight from Atlanta to Ontario (ATL-ONT-ATL) is currently $254
Cheapest One way Flight
$70
Frontier Airlines
• 1 stop
• 14h 14m
Jun 29
The cheapest one way flight from Atlanta to Ontario (ATL-ONT) is currently $70
Cheapest Direct Flight
$544
Delta Airlines
• nonstop
• 6h 57m
Aug 02
The cheapest nonstop flight from Atlanta to Ontario (ATL-ONT) is currently $544
Fastest Flight
6h 57m
The fastest nonstop flight from Atlanta to Ontario (ATL-ONT) takes 6h 57m
Top Airlines Flying from Atlanta to Ontario
Latest Flight Deals from Atlanta (ATL) to Ontario (ONT)
Compare and book low fare round-trip air tickets from Atlanta to Ontario. Ideal for travelers with confirmed return itineraries.
Sep 29 - Oct 02, Economy
Atlanta → Ontario
23h 45m
12:30 PM - 11:55 PM • 1 stop
Atlanta → Ontario
25h 23m
3:47 PM - 10:10 AM • 1 stop
Frontier Airlines
Sep 29 - Oct 02, Economy
Atlanta → Ontario
17h 16m
1:18 PM - 8:54 PM • 1 stop
Atlanta → Ontario
25h 23m
3:47 PM - 10:10 AM • 1 stop
Frontier Airlines
Sep 29 - Oct 02, Economy
Atlanta → Ontario
30h 55m
8:00 AM - 11:55 PM • 1 stop
Atlanta → Ontario
25h 23m
3:47 PM - 10:10 AM • 1 stop
Frontier Airlines
Sep 29 - Oct 02, Economy
Atlanta → Ontario
14h 17m
8:00 AM - 1:57 PM • 1 stop
Atlanta → Ontario
25h 23m
3:47 PM - 10:10 AM • 1 stop
Frontier Airlines
Sep 29 - Oct 02, Economy
Atlanta → Ontario
10h 25m
5:30 PM - 8:55 PM • 1 stop
Atlanta → Ontario
10h 15m
2:50 PM - 12:05 AM • 1 stop
Southwest Airlines
Explore competitive one-way airfare options for ATL - ONT flights. Best suited for flexible or open-ended travel plans.
Flying to Ontario soon? We've surfaced some of the most affordable last-minute flights from Atlanta to Ontario, ideal for urgent plans or spontaneous trips.
Looking for the fastest way to Ontario? These direct flight options from ATL to ONT offer both convenience and value—no layovers, just straight to your destination.
Aug 02 - Aug 09, Economy
Atlanta → Ontario
6h 57m
9:21 AM - 10:38 AM • nonstop
Atlanta → Ontario
7h 10m
10:40 PM - 6:10 AM • nonstop
Delta Airlines
Jul 02 - Jul 05, Economy
Atlanta → Ontario
7h 5m
9:15 AM - 10:40 AM • nonstop
Atlanta → Ontario
6h 55m
10:00 PM - 5:15 AM • nonstop
Delta Airlines
Jul 02 - Jul 05, Economy
Atlanta → Ontario
7h 11m
8:17 PM - 9:48 PM • nonstop
Atlanta → Ontario
6h 58m
7:05 AM - 2:23 PM • nonstop
Delta Airlines
Jul 02 - Jul 05, Economy
Atlanta → Ontario
7h 11m
4:59 PM - 6:30 PM • nonstop
Atlanta → Ontario
7h 1m
11:50 AM - 7:11 PM • nonstop
Delta Airlines
Jun 29 - Jul 05, Economy
Atlanta → Ontario
7h 11m
8:17 PM - 9:48 PM • nonstop
Atlanta → Ontario
7h 5m
7:05 AM - 2:30 PM • nonstop
Delta Airlines
FAQs on Atlanta to Ontario Flights
What are the airports in Atlanta?
ATL
What’s the most popular airline flying from ATL to ONT?
The most popular airline flying from Atlanta to Ontario are
Can I fly from ATL to ONT non-stop?
Yes, you can fly ATL to ONT non-stop on
Which airlines fly nonstop between Atlanta and Ontario?
The non-stop flights between Atlanta and Ontario are .
What’s the earliest departure time from ATL to ONT Airport?
The earliest flight leaves ATL at 6:07 am and lands in ONT - Ontario International
What are the airports in Ontario?
ONT
Can I make changes to my Atlanta to Ontario flight tickets or cancel them on FareLeaders.com?
No. We are an airfare comparison site. All the tickets are booked by the travel agent offering the flight deal and any changes or cancellations to be made are directly done directly by them or the airlines.
Can I cancel my flight tickets from ATL to ONT?
Read the fare rules of the Atlanta to Ontario air tickets booked. Some airlines allow you to cancel the tickets within a stipulated time period with a cancellation fee.
Which airline alliances offer flights from Atlanta and Ontario?
operate flights between Atlanta and Ontario
How long does a flight from Atlanta to Ontario take?
It takes approximately 4 hour to fly non-stop from ATL to ONT, which is 1899.48 miles by air.
Which airlines provide the cheapest flights from Atlanta (ATL) to Ontario (ONT) ?
In the past couple of days, the cheapest tickets to ONT from ATL were found on F9 : USD 70
Do I need a passport to fly between ATL and ONT?
No
What’s the latest departure time from ATL to ONT ?
The last flight leaves ATL at 8:17 pm
Atlanta (ATL) to Ontario (ONT): Airport Information
| Origin Airport | Hartsfield Jackson Atlanta International , Atlanta, US |
| Destination Airport | Ontario International , Ontario, US |
| Distance | 1899 miles |
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