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Uncover the best deals on San Diego to Ontario flights by comparing fares from hundreds of airlines and agencies.
Good to Know: Cheapest and Fastest SAN - ONT Flights
Useful information for finding best airline tickets from San Diego International to Ontario International on your next trip.
Cheapest Round Trip Flight
$692
Southwest Airlines
• 1 stop
• 7h 10m
Aug 06 – Aug 09
The cheapest round trip flight from San Diego to Ontario (SAN-ONT-SAN) is currently $692
Cheapest Direct Flight
$554
United Airlines
• nonstop
• 1h 49m
Aug 06
The cheapest nonstop flight from San Diego to Ontario (SAN-ONT) is currently $554
Fastest Flight
1h 41m
The fastest nonstop flight from San Diego to Ontario (SAN-ONT) takes 1h 41m
Latest Flight Deals from San Diego (SAN) to Ontario (ONT)
Compare and book low fare round-trip air tickets from San Diego to Ontario. Ideal for travelers with confirmed return itineraries.
Aug 06 - Aug 09, Economy
San Diego → Ontario
7h 10m
7:20 AM - 11:50 AM • 1 stop
San Diego → Ontario
5h 55m
2:50 PM - 6:45 PM • 1 stop
Southwest Airlines
Aug 06 - Aug 09, Economy
San Diego → Ontario
5h 5m
6:40 PM - 9:45 PM • 1 stop
San Diego → Ontario
5h 55m
12:15 PM - 4:10 PM • 1 stop
Southwest Airlines
Aug 06 - Aug 09, Economy
San Diego → Ontario
6h 55m
3:10 PM - 7:25 PM • 1 stop
San Diego → Ontario
5h 35m
6:55 PM - 10:30 PM • 1 stop
Southwest Airlines
Aug 06 - Aug 09, Economy
San Diego → Ontario
7h 25m
4:30 PM - 9:15 PM • 1 stop
San Diego → Ontario
5h 35m
6:55 PM - 10:30 PM • 1 stop
Southwest Airlines
Aug 06 - Aug 09, Economy
San Diego → Ontario
7h 30m
1:00 PM - 5:50 PM • 1 stop
San Diego → Ontario
5h 5m
9:10 AM - 12:15 PM • 1 stop
Southwest Airlines
Flying to Ontario soon? We've surfaced some of the most affordable last-minute flights from San Diego to Ontario, ideal for urgent plans or spontaneous trips.
Aug 06 - Aug 09, Economy
San Diego → Ontario
7h 10m
7:20 AM - 11:50 AM • 1 stop
San Diego → Ontario
5h 55m
2:50 PM - 6:45 PM • 1 stop
Southwest Airlines
Aug 06 - Aug 09, Economy
San Diego → Ontario
5h 5m
6:40 PM - 9:45 PM • 1 stop
San Diego → Ontario
5h 55m
12:15 PM - 4:10 PM • 1 stop
Southwest Airlines
Aug 06 - Aug 09, Economy
San Diego → Ontario
6h 55m
3:10 PM - 7:25 PM • 1 stop
San Diego → Ontario
5h 35m
6:55 PM - 10:30 PM • 1 stop
Southwest Airlines
Aug 06 - Aug 09, Economy
San Diego → Ontario
7h 25m
4:30 PM - 9:15 PM • 1 stop
San Diego → Ontario
5h 35m
6:55 PM - 10:30 PM • 1 stop
Southwest Airlines
Aug 06 - Aug 09, Economy
San Diego → Ontario
7h 30m
1:00 PM - 5:50 PM • 1 stop
San Diego → Ontario
5h 5m
9:10 AM - 12:15 PM • 1 stop
Southwest Airlines
Looking for the fastest way to Ontario? These direct flight options from SAN to ONT offer both convenience and value—no layovers, just straight to your destination.
Aug 06 - Aug 09, Economy
San Diego → Ontario
1h 49m
10:49 AM - 11:58 AM • nonstop
San Diego → Ontario
1h 41m
6:50 PM - 7:51 PM • nonstop
United Airlines
Aug 06 - Aug 09, Economy
San Diego → Ontario
1h 53m
8:32 PM - 9:45 PM • nonstop
San Diego → Ontario
1h 41m
6:50 PM - 7:51 PM • nonstop
United Airlines
Aug 06 - Aug 09, Economy
San Diego → Ontario
1h 41m
6:20 AM - 7:21 AM • nonstop
San Diego → Ontario
1h 48m
9:00 AM - 10:08 AM • nonstop
United Airlines
Aug 06 - Aug 09, Economy
San Diego → Ontario
2h 1m
6:15 AM - 7:36 AM • nonstop
San Diego → Ontario
1h 41m
6:50 PM - 7:51 PM • nonstop
Delta Airlines
Aug 06 - Aug 09, Economy
San Diego → Ontario
1h 44m
3:00 PM - 4:04 PM • nonstop
San Diego → Ontario
1h 48m
9:00 AM - 10:08 AM • nonstop
Delta Airlines
FAQs on San Diego to Ontario Flights
What are the airports in San Diego?
SAN
What’s the most popular airline flying from SAN to ONT?
The most popular airline flying from San Diego to Ontario are
Can I fly from SAN to ONT non-stop?
Yes, you can fly SAN to ONT non-stop on
Which airlines fly nonstop between San Diego and Ontario?
The non-stop flights between San Diego and Ontario are .
What’s the earliest departure time from SAN to ONT Airport?
The earliest flight leaves SAN at 6:15 am and lands in ONT - Ontario International
What are the airports in Ontario?
ONT
Can I make changes to my San Diego 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 SAN to ONT?
Read the fare rules of the San Diego 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 San Diego and Ontario?
operate flights between San Diego and Ontario
How long does a flight from San Diego to Ontario take?
It takes approximately 1 hour to fly non-stop from SAN to ONT, which is 94.18 miles by air.
Which airlines provide the cheapest flights from San Diego (SAN) to Ontario (ONT) ?
In the past couple of days, the cheapest tickets to ONT from SAN were found on WN : USD 692
Do I need a passport to fly between SAN and ONT?
No
What’s the latest departure time from SAN to ONT ?
The last flight leaves SAN at 8:32 pm
San Diego (SAN) to Ontario (ONT): Airport Information
| Origin Airport | San Diego International , San Diego, US |
| Destination Airport | Ontario International , Ontario, US |
| Distance | 94 miles |
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