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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
$50
Southwest Airlines
• 1 stop
• 16h 45m
Aug 22 – Aug 23
The cheapest round trip flight from San Diego to Ontario (SAN-ONT-SAN) is currently $50
Fastest Flight
5h 5m
The fastest nonstop flight from San Diego to Ontario (SAN-ONT) takes 5h 5m
Top Airlines Flying from San Diego to Ontario
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 22 - Aug 23, Economy
San Diego → Ontario
16h 45m
10:25 PM - 8:30 AM • 1 stop
San Diego → Ontario
12h
2:30 PM - 9:50 PM • 1 stop
Southwest Airlines
Aug 22 - Aug 23, Economy
San Diego → Ontario
25h 55m
5:30 PM - 9:25 AM • 1 stop
San Diego → Ontario
9h 15m
4:35 PM - 10:30 PM • 1 stop
Southwest Airlines
Aug 22 - Aug 23, Economy
San Diego → Ontario
30h 10m
3:15 PM - 9:25 AM • 1 stop
San Diego → Ontario
7h 5m
4:35 PM - 9:00 PM • 1 stop
Southwest Airlines
Aug 22 - Aug 23, Economy
San Diego → Ontario
32h 15m
1:50 PM - 9:25 AM • 1 stop
San Diego → Ontario
6h 50m
1:45 PM - 5:55 PM • 1 stop
Southwest Airlines
Sep 11 - Sep 11, Economy
San Diego → Ontario
7h 10m
8:10 AM - 12:40 PM • 1 stop
San Diego → Ontario
12h 15m
2:40 PM - 10:15 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 27 - Sep 10, Economy
San Diego → Ontario
5h 55m
7:30 AM - 11:25 AM • 1 stop
San Diego → Ontario
5h 15m
8:00 AM - 11:15 AM • 1 stop
Southwest Airlines
Aug 27 - Sep 10, Economy
San Diego → Ontario
5h 30m
5:45 PM - 9:15 PM • 1 stop
San Diego → Ontario
5h 15m
8:00 AM - 11:15 AM • 1 stop
Southwest Airlines
Aug 27 - Sep 10, Economy
San Diego → Ontario
5h 55m
4:45 PM - 8:40 PM • 1 stop
San Diego → Ontario
5h 15m
8:00 AM - 11:15 AM • 1 stop
Southwest Airlines
Aug 27 - Sep 10, Economy
San Diego → Ontario
5h 10m
10:15 AM - 1:25 PM • 1 stop
San Diego → Ontario
5h 30m
5:45 PM - 9:15 PM • 1 stop
Southwest Airlines
Aug 27 - Sep 10, Economy
San Diego → Ontario
5h 20m
11:55 AM - 3:15 PM • 1 stop
San Diego → Ontario
5h 15m
8:00 AM - 11:15 AM • 1 stop
Southwest 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?
NO
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 7:30 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 61
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 10:25 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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