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Good to Know: Flights to ONT
Useful information for finding cheap flights to Ontario International and booking your next trip
Cheapest Round Trip Flight
$740
United Airlines• 1 stop • Sep 16 – Sep 18
The cheapest round trip flight from Outagamie County Airport to Ontario International is currently $740
Cheapest One way Flight
$257
United Airlines• 2 stops• 37h 26mSep 16
The cheapest one way flight from Los Cabos International to Ontario International is currently $257
Cheapest Direct Flight
$409
Delta Airlines• nonstop• 8h 47mSep 16
The cheapest nonstop flight from Baltimore/Washington International Thurgood Marsha to Ontario International is currently $409
Fastest Flight
5h 18m
The fastest nonstop flight from Dallas Fort Worth International to Ontario International takes 5h 18m
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.
Sep 16 - Sep 18, Economy
Appletonl → Ontario
- • 1 stop
Appletonl → Ontario
- • 1 stop
United Airlines
Sep 16 - Sep 18, Economy
Appletonl → Ontario
25h 52m
- • 2 stops
Appletonl → Ontario
12h 39m
- • 2 stops
United Airlines
Sep 16 - Sep 18, Economy
Appletonl → Ontario
20h 22m
7:00 AM - 3:57 PM • 2 stops
Appletonl → Ontario
14h 5m
11:55 AM - 10:40 PM • 1 stop
Delta Airlines
Sep 16 - Sep 18, Economy
Appletonl → Ontario
16h 45m
7:00 AM - 7:15 PM • 2 stops
Appletonl → Ontario
14h 5m
11:55 AM - 10:40 PM • 1 stop
Delta Airlines
Sep 16 - Sep 18, Economy
Appletonl → Ontario
16h 45m
7:00 AM - 7:15 PM • 2 stops
Appletonl → Ontario
18h 57m
7:05 AM - 8:42 PM • 2 stops
Delta 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.
Sep 12 - Sep 18, Economy
Dallas → Ontario
5h 18m
10:10 AM - 11:28 AM • nonstop
Dallas → Ontario
5h 14m
12:18 PM - 5:32 PM • nonstop
Frontier Airlines
Sep 12 - Sep 18, Economy
Dallas → Ontario
5h 18m
10:10 AM - 11:28 AM • nonstop
Dallas → Ontario
13h 35m
7:30 PM - 5:45 AM • 1 stop
Frontier Airlines
Sep 13 - Sep 19, Economy
Oakland → Ontario
24h 6m
7:58 PM - 10:44 AM • 1 stop
Oakland → Ontario
25h 10m
5:49 PM - 8:59 AM • 1 stop
Alaska Airlines
Sep 12 - Sep 18, Economy
Dallas → Ontario
13h 34m
11:15 AM - 5:29 PM • 1 stop
Dallas → Ontario
8h 37m
1:15 PM - 8:32 PM • 1 stop
United Airlines
Sep 12 - Sep 18, Economy
Dallas → Ontario
8h 52m
9:00 AM - 12:32 PM • 1 stop
Dallas → Ontario
8h 47m
4:13 PM - 11:40 PM • 1 stop
United Airlines
Maximize your time in Ontario, not in transit. Discover non-stop direct flights to ONT for the quickest, most straightforward journey to the Strip.
Sep 16 - Sep 20, Economy
Baltimore → Ontario
8h 47m
4:51 PM - 7:18 PM • nonstop
Baltimore → Ontario
7h 36m
7:50 AM - 3:46 PM • nonstop
Delta Airlines
Sep 16 - Sep 20, Economy
Baltimore → Ontario
8h 59m
5:30 PM - 8:09 PM • nonstop
Baltimore → Ontario
7h 36m
7:50 AM - 3:46 PM • nonstop
American Airlines
Sep 16 - Sep 20, Economy
Baltimore → Ontario
8h 49m
10:05 PM - 12:34 AM • nonstop
Baltimore → Ontario
8h 32m
12:47 PM - 8:59 PM • nonstop
United Airlines
Sep 16 - Sep 20, Economy
Baltimore → Ontario
8h 52m
5:40 PM - 8:12 PM • nonstop
Baltimore → Ontario
8h 23m
10:45 PM - 6:48 AM • nonstop
United 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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