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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
$352
Southwest Airlines• 2 stops • 24hJan 16 – Jan 26
The cheapest round trip flight from Gerald R. Ford International to Ontario International is currently $352
Cheapest One way Flight
$616
Frontier Airlines• 2 stops• 30h 18mAug 01
The cheapest one way flight from Denver International to Ontario International is currently $616
Cheapest Direct Flight
$583
Southwest Airlines• nonstop• 2hAug 01
The cheapest nonstop flight from Norman Y. Mineta San Jose International to Ontario International is currently $583
Fastest Flight
2h
The fastest nonstop flight from Norman Y. Mineta San Jose International to Ontario International takes 2h
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.
Jan 16 - Jan 26, Economy
Grand Rapids → Ontario
24h
6:25 AM - 6:05 PM • 2 stops
Grand Rapids → Ontario
12h 35m
11:50 PM - 10:45 AM • 1 stop
Southwest Airlines
Jan 16 - Jan 26, Economy
Grand Rapids → Ontario
24h
6:25 AM - 6:05 PM • 2 stops
Grand Rapids → Ontario
15h 30m
7:10 AM - 7:40 PM • 3 stops
Southwest Airlines
Jan 16 - Jan 26, Economy
Grand Rapids → Ontario
20h 35m
6:25 AM - 4:00 PM • 2 stops
Grand Rapids → Ontario
8h 55m
6:45 AM - 3:20 PM • 1 stop
Southwest Airlines
Jan 16 - Jan 26, Economy
Grand Rapids → Ontario
13h 50m
2:30 PM - 8:00 PM • 2 stops
Grand Rapids → Ontario
12h 5m
11:40 AM - 10:05 PM • 1 stop
Southwest Airlines
Jan 16 - Jan 26, Economy
Grand Rapids → Ontario
13h 47m
6:00 AM - 11:27 AM • 1 stop
Grand Rapids → Ontario
10h 10m
8:30 AM - 5:40 PM • 1 stop
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.
Aug 02 - Aug 09, Economy
Akron → Ontario
12h 29m
6:02 PM - 10:51 PM • 1 stop
Akron → Ontario
12h 2m
7:00 AM - 5:22 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.
Aug 01 - Aug 15, Economy
San Jose → Ontario
2h
6:05 AM - 7:25 AM • nonstop
San Jose → Ontario
1h 50m
2:50 PM - 4:00 PM • nonstop
Southwest Airlines
Aug 01 - Aug 15, Economy
San Jose → Ontario
2h
8:40 PM - 10:00 PM • nonstop
San Jose → Ontario
1h 50m
5:30 PM - 6:40 PM • nonstop
Southwest Airlines
Aug 01 - Aug 15, Economy
San Jose → Ontario
2h
11:25 AM - 12:45 PM • nonstop
San Jose → Ontario
1h 55m
6:00 AM - 7:15 AM • nonstop
Southwest Airlines
Aug 16 - Aug 17, Economy
Missoula → Ontario
4h 8m
5:52 PM - 7:40 PM • nonstop
Missoula → Ontario
4h 1m
1:39 PM - 5:20 PM • nonstop
American Airlines
Sep 01 - Sep 01, Economy
Atlanta → Ontario
6h 57m
9:25 AM - 10:42 AM • nonstop
Atlanta → Ontario
7h 10m
10:40 PM - 6:10 AM • 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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