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Uncover the best deals on Ontario to San Diego flights by comparing fares from hundreds of airlines and agencies.
Good to Know: Cheapest and Fastest ONT - SAN Flights
Useful information for finding best airline tickets from Ontario International to San Diego International on your next trip.
Cheapest Round Trip Flight
$449
Southwest Airlines
• 1 stop
• 5h 40m
Oct 22 – Oct 26
The cheapest round trip flight from Ontario to San Diego (ONT-SAN-ONT) is currently $449
Fastest Flight
5h 5m
The fastest nonstop flight from Ontario to San Diego (ONT-SAN) takes 5h 5m
Top Airlines Flying from Ontario to San Diego
Latest Flight Deals from Ontario (ONT) to San Diego (SAN)
Compare and book low fare round-trip air tickets from Ontario to San Diego. Ideal for travelers with confirmed return itineraries.
Oct 22 - Oct 26, Economy
Ontario → San Diego
5h 40m
4:25 PM - 8:05 PM • 1 stop
Ontario → San Diego
5h 40m
1:05 PM - 4:45 PM • 1 stop
Southwest Airlines
Oct 22 - Oct 26, Economy
Ontario → San Diego
5h 15m
5:30 AM - 8:45 AM • 1 stop
Ontario → San Diego
5h 55m
9:30 AM - 1:25 PM • 1 stop
Southwest Airlines
Oct 22 - Oct 26, Economy
Ontario → San Diego
5h 5m
1:30 PM - 4:35 PM • 1 stop
Ontario → San Diego
6h 45m
8:00 PM - 12:05 AM • 1 stop
Southwest Airlines
Oct 22 - Oct 26, Economy
Ontario → San Diego
5h 40m
9:45 AM - 1:25 PM • 1 stop
Ontario → San Diego
5h 50m
4:25 PM - 8:15 PM • 1 stop
Southwest Airlines
FAQs on Ontario to San Diego Flights
What are the airports in Ontario?
ONT
What’s the most popular airline flying from ONT to SAN?
The most popular airline flying from Ontario to San Diego are
Can I fly from ONT to SAN non-stop?
NO
Which airlines fly nonstop between Ontario and San Diego?
The non-stop flights between Ontario and San Diego are .
What’s the earliest departure time from ONT to SAN Airport?
The earliest flight leaves ONT at 5:30 am and lands in SAN - San Diego International
What are the airports in San Diego?
SAN
Can I make changes to my Ontario to San Diego 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 ONT to SAN?
Read the fare rules of the Ontario to San Diego 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 Ontario and San Diego?
operate flights between Ontario and San Diego
How long does a flight from Ontario to San Diego take?
It takes approximately 1 hour to fly non-stop from ONT to SAN, which is 94.18 miles by air.
Which airlines provide the cheapest flights from Ontario (ONT) to San Diego (SAN) ?
In the past couple of days, the cheapest tickets to SAN from ONT were found on WN : USD 449
Do I need a passport to fly between ONT and SAN?
No
What’s the latest departure time from ONT to SAN ?
The last flight leaves ONT at 5:15 pm
Essential Information for Booking Flights from Ontario (ONT) - AI Insights
What's the cheapest airline from ont to san?
You can find affordable flights from Ontario to San Diego on Alaska Airlines. The airline offers budget-friendly options with priority service, lounge access, and flatbed seats. For a round-trip business class ticket, consider booking at least 53 days in advance to secure the best rates.
What's the popular airline to fly from ont to san?
You can fly from Ontario International Airport (ONT) to San Diego International Airport (SAN) on Southwest Airlines (WN), which offers a budget-friendly option with its premium business class featuring priority check-in, lounge access, and flatbed seats. This round-trip flight is available for booking 53 days in advance. For affordable airfares and cheap flights, consider searching on fareleaders.com.
What's the cheapest day of the week to fly from ont to san?
The cheapest day to fly from Ontario International Airport (ONT) to San Diego International Airport (SAN) is Wednesday. Flying on this day can help you save on airfares, making it a budget-friendly option for your round-trip Business class ticket.
What's the cheapest month to fly from ont to san?
The cheapest month to fly from Ontario International Airport (ONT) to San Diego International Airport (SAN) is December. Flying during this time can result in budget-friendly flights, making it a great option for travelers looking for affordable airfares.
Which airline/airlines fly from ont to san?
The airlines that fly from Ontario International Airport (ONT) to San Diego International Airport (SAN) include United Airlines, Southwest Airlines, JetBlue Airways, Frontier Airlines, Alaska Airlines, Delta Airlines, American Airlines, and Volaris Airline. You can find budget-friendly flights on these carriers for your upcoming round-trip journey.
What is the cheapest airline to fly from Ontario International Airport (ONT) to San Diego International Airport (SAN)?
Alaska Airlines
How far in advance should I book my flight to get the best airfare deals?
Book at least 53 days in advance for the best deals
Can I find cheap flights on your website for a weekend getaway?
Yes, our website offers affordable options for weekend getaways
Do you offer any discounts or promotions for booking multiple flights?
Yes, we offer discounts for booking multiple flights
Ontario (ONT) to San Diego (SAN): Airport Information
| Origin Airport | Ontario International , Ontario, US |
| Destination Airport | San Diego International , San Diego, US |
| Distance | 94 miles |
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