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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
$127
Southwest Airlines• 1 stop • 11h 40mSep 10 – Sep 14
The cheapest round trip flight from Norman Y. Mineta San Jose International to Ontario International is currently $127
Cheapest One way Flight
$448
Copa Airlines• 1 stop• 13h 52mSep 20
The cheapest one way flight from El Dorado International to Ontario International is currently $448
Cheapest Direct Flight
$167
Southwest Airlines• nonstop• 1h 55mSep 10
The cheapest nonstop flight from Norman Y. Mineta San Jose International to Ontario International is currently $167
Fastest Flight
1h 55m
The fastest nonstop flight from Norman Y. Mineta San Jose International to Ontario International takes 1h 55m
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 10 - Sep 14, Economy
San Jose → Ontario
11h 40m
3:15 PM - 10:15 PM • 1 stop
San Jose → Ontario
1h 55m
6:00 PM - 7:15 PM • nonstop
Southwest Airlines
Sep 10 - Sep 14, Economy
San Jose → Ontario
13h 40m
6:45 AM - 3:05 PM • 1 stop
San Jose → Ontario
1h 55m
3:40 PM - 4:55 PM • nonstop
Southwest Airlines
Sep 10 - Sep 14, Economy
San Jose → Ontario
10h 40m
6:45 AM - 1:25 PM • 1 stop
San Jose → Ontario
7h 10m
7:55 AM - 12:25 PM • 1 stop
Southwest Airlines
Sep 10 - Sep 14, Economy
San Jose → Ontario
1h 55m
10:55 AM - 12:10 PM • nonstop
San Jose → Ontario
1h 50m
1:15 PM - 2:25 PM • nonstop
Southwest Airlines
Sep 10 - Sep 14, Economy
San Jose → Ontario
2h
6:30 AM - 7:50 AM • nonstop
San Jose → Ontario
1h 55m
6:00 AM - 7:15 AM • nonstop
Southwest 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 21 - Aug 24, Economy
Columbus → Ontario
32h 15m
- • 2 stops
Columbus → Ontario
13h 31m
- • 1 stop
Delta Airlines
Aug 21 - Aug 24, Economy
Columbus → Ontario
23h 31m
- • 2 stops
Columbus → Ontario
21h 46m
- • 2 stops
Delta Airlines
Aug 24 - Aug 28, Economy
Seattle → Ontario
6h 40m
6:10 PM - 10:10 PM • 1 stop
Seattle → Ontario
10h
2:50 PM - 8:50 PM • 1 stop
Southwest Airlines
Aug 24 - Aug 28, Economy
Seattle → Ontario
7h 10m
3:25 PM - 7:55 PM • 1 stop
Seattle → Ontario
6h 40m
2:50 PM - 6:50 PM • 1 stop
Southwest Airlines
Aug 21 - Aug 24, Economy
Columbus → Ontario
33h 44m
6:10 AM - 11:34 PM • 2 stops
Columbus → Ontario
23h 38m
6:01 PM - 11:19 AM • 2 stops
Delta 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 10 - Sep 14, Economy
San Jose → Ontario
1h 55m
10:55 AM - 12:10 PM • nonstop
San Jose → Ontario
1h 50m
1:15 PM - 2:25 PM • nonstop
Southwest Airlines
Sep 10 - Sep 14, Economy
San Jose → Ontario
2h
6:30 AM - 7:50 AM • nonstop
San Jose → Ontario
1h 55m
6:00 AM - 7:15 AM • nonstop
Southwest Airlines
Sep 10 - Sep 14, Economy
San Jose → Ontario
2h
8:10 PM - 9:30 PM • nonstop
San Jose → Ontario
1h 55m
9:00 AM - 10:15 AM • nonstop
Southwest Airlines
Sep 10 - Sep 14, Economy
San Jose → Ontario
1h 55m
4:45 PM - 6:00 PM • nonstop
San Jose → Ontario
1h 50m
1:15 PM - 2:25 PM • nonstop
Southwest Airlines
Sep 10 - Sep 14, Economy
San Jose → Ontario
2h
6:30 AM - 7:50 AM • nonstop
San Jose → Ontario
1h 55m
6:00 AM - 7:15 AM • nonstop
Southwest 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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