Lowest Prices
Find the lowest ONT airfares by comparing hundreds of airlines and agencies.
Good to Know: Flights to ONT
Useful information for finding cheap flights to Ontario International and booking your next trip
Cheapest Round Trip Flight
$439
United Airlines• 1 stop • 14h 11mDec 10 – Dec 13
The cheapest round trip flight from Hartsfield Jackson Atlanta International to Ontario International is currently $439
Cheapest One way Flight
$117
Frontier Airlines• 1 stop• 20h 18mDec 18
The cheapest one way flight from Denver International to Ontario International is currently $117
Cheapest Direct Flight
$513
Alaska Airlines• nonstop• Dec 10
The cheapest nonstop flight from Hartsfield Jackson Atlanta International to Ontario International is currently $513
Fastest Flight
3h 40m
The fastest nonstop flight from Denver International to Ontario International takes 3h 40m
Best Flight Deals to Ontario
Identify the most efficient round-trip flights to Ontario. We present options balancing cost and convenience for your return journey.
Dec 10 - Dec 13, Economy
Atlanta → Ontario
14h 11m
3:58 PM - 9:49 PM • 1 stop
Atlanta → Ontario
20h 40m
6:00 AM - 9:40 PM • 2 stops
United Airlines
Dec 10 - Dec 13, Economy
Atlanta → Ontario
11h 44m
4:38 PM - 8:42 PM • 1 stop
Atlanta → Ontario
14h 6m
12:13 PM - 11:59 PM • 1 stop
United Airlines
Dec 10 - Dec 13, Economy
Atlanta → Ontario
13h 40m
3:35 PM - 8:55 PM • 2 stops
Atlanta → Ontario
13h 40m
9:05 AM - 8:25 PM • 2 stops
Southwest Airlines
Dec 10 - Dec 13, Economy
Atlanta → Ontario
13h 20m
3:55 PM - 8:55 PM • 2 stops
Atlanta → Ontario
13h 50m
10:15 AM - 9:45 PM • 2 stops
Southwest Airlines
Dec 10 - Dec 13, Economy
Atlanta → Ontario
14h 11m
3:58 PM - 9:49 PM • 1 stop
Atlanta → Ontario
12h 27m
6:00 AM - 4:47 PM • 1 stop
United Airlines
For travel requiring no set return, access available one-way flights to Ontario (ONT). These options support extended stays or open-ended plans.
Need to travel to Ontario soon? View current last-minute flight options to ONT for spontaneous or pressing plans.
Maximize your time in Ontario, not in transit. Discover non-stop direct flights to ONT for the quickest, most straightforward journey to the Strip.
Dec 10 - Dec 13, Economy
Atlanta → Ontario
- • nonstop
Atlanta → Ontario
- • nonstop
Alaska Airlines
Dec 10 - Dec 13, Economy
Atlanta → Ontario
- • nonstop
Atlanta → Ontario
- • nonstop
Delta Airlines
Dec 10 - Dec 13, Economy
Atlanta → Ontario
7h 23m
5:56 PM - 7:39 PM • nonstop
Atlanta → Ontario
6h 50m
7:05 AM - 2:15 PM • nonstop
Delta Airlines
Dec 10 - Dec 13, Economy
Atlanta → Ontario
7h 24m
9:20 PM - 11:04 PM • nonstop
Atlanta → Ontario
6h 50m
7:05 AM - 2:15 PM • nonstop
Delta Airlines
Dec 10 - Dec 13, Economy
Atlanta → Ontario
- • nonstop
Atlanta → Ontario
- • nonstop
Delta Airlines
Destination Airport Information
| IATA Code | ONT |
| Name | Ontario International |
| City | Ontario |
| Country | US |
| Latitude | 34.055999755859375 |
| Longitude | -117.60099792480469 |
Popular Airlines
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