Cheap Flight Tickets from San Diego (SAN) to Ontario (ONT), Starting at $448

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

$732

WN Southwest Airlines • 1 stop • 5h 35m

Jun 15 – Jun 16

The cheapest round trip flight from San Diego to Ontario (SAN-ONT-SAN) is currently $732

🔍 Search Flights

Cheapest Direct Flight

$448

DL Delta Airlines • nonstop •

Jun 15

The cheapest nonstop flight from San Diego to Ontario (SAN-ONT) is currently $448

🔍 Search Flights

Fastest Flight

1h 59m

The fastest nonstop flight from San Diego to Ontario (SAN-ONT) takes 1h 59m

Top Airlines Flying from San Diego to Ontario

Southwest Airlines-WN

Southwest Airlines

Delta Airline, DL

Delta Airlines

United Airlines, UA

United Airlines

Sun Country Airlines (SY)

Sun Country Airlines

American Airlines, AA

American Airlines

Alaska Airlines -AS

Alaska Airlines

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.

Jun 15 - Jun 16, Economy
WN
San Diego → Ontario
5h 35m
6:35 AM - 10:10 AM • 1 stop
WN
San Diego → Ontario
5h 20m
6:10 AM - 9:30 AM • 1 stop
$732
Southwest Airlines
Jun 15 - Jun 16, Economy
WN
San Diego → Ontario
6h 55m
6:00 PM - 10:15 PM • 1 stop
WN
San Diego → Ontario
5h 20m
6:10 AM - 9:30 AM • 1 stop
$732
Southwest Airlines
Jun 15 - Jun 16, Economy
WN
San Diego → Ontario
5h 50m
8:15 AM - 12:05 PM • 1 stop
WN
San Diego → Ontario
4h 15m
6:35 PM - 9:30 PM • 1 stop
$732
Southwest Airlines
Jun 15 - Jun 16, Economy
WN
San Diego → Ontario
7h 10m
1:30 PM - 6:00 PM • 1 stop
WN
San Diego → Ontario
4h 15m
6:35 PM - 9:30 PM • 1 stop
$732
Southwest Airlines
Jun 15 - Jun 16, Economy
WN
San Diego → Ontario
6h 45m
9:20 AM - 1:25 PM • 1 stop
WN
San Diego → Ontario
5h 20m
7:20 PM - 10:40 PM • 1 stop
$732
Southwest Airlines
Jun 15 - Jun 16, Economy
WN
San Diego → Ontario
7h 25m
8:40 AM - 1:25 PM • 1 stop
WN
San Diego → Ontario
4h 15m
6:35 PM - 9:30 PM • 1 stop
$732
Southwest Airlines

Fly from San Diego to Ontario with the Best Airfare Deals on FareLeaders

Looking for a cheap last-minute deal or the best round-trip flight from San Diego to Ontario? Find the biggest savings on one-way and round-trip tickets right here.

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 732
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 8:3200 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

More Flight Options for San Diego (SAN) and Ontario (ONT)

Why Fareleaders for SAN to ONT Plane Tickets

Lowest Prices
Lowest Prices
Uncover the best deals on San Diego to Ontario flights by comparing fares from hundreds of airlines and agencies.
New Deals
New Deals Everyday
Get the best prices on SAN to ONT flights—we update our fares daily so you never miss a saving.
Best Travel Options
No Service Fees
Compare hundreds of San Diego to Ontario flights and secure the best deals—we never add any service fees.
Get Fare Drop Alert
Be the first to know when fares drop for the San Diego (SAN) to Ontario (ONT)
Terms and Conditions*