₩288,500 Cheap Flights from Ontario (ONT) to San Diego (SAN)

View ₩288,500 flight on Sat, Nov 8, 2025Opens in a new window

Popular airlines from Los Angeles - Ontario Intl. Airport (ONT) to San Diego Intl. Airport (SAN)

  • Plan, book, fly with confidence

  • trending down icon

    Be in the know

    Get alerts if flight prices drop or rise*
  • bex rewards loyalty icon

    Book smarter

    Save up to 40% on select hotels after you book a flight*
  • payments icon

    Earn twice

    Earn your airline miles on top of our rewards
    Sign in

Cheap Flights from Ontario to San Diego (ONT-SAN)

Prices were available within the past 7 days and start at ₩288,500 for one-way flights and for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Find the cheapest month to fly from Ontario (ONT) to San Diego (SAN)

August is typically the cheapest month to fly

From ₩224,577 - ₩888,219 per traveler.

Frequently asked questions

How much is a flight from ONT to San Diego Airport?
Start packing your suitcase, because round-trip journeys between ONT and San Diego Airport start from . That's based on fares listed within the last 7 days on Expedia for flights departing within the next year. Prices can rise quickly, so book now to secure the best deal. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from ONT to San Diego Airport?
We understand that things come up unexpectedly, so we've made it as easy as possible for you to cancel your flight online. Just visit the Customer Service Portal and follow the instructions.
How do I find cheap flights from Los Angeles - Ontario Intl. Airport (ONT) to SAN that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for ONT to San Diego Airport flights, you'll see a "no change fees" filter for you to select.
How far is the flight from Los Angeles - Ontario Intl. Airport (ONT) to SAN?
You can forget about a movie marathon on this flight — it's just 150 kilometers from Ontario to San Diego. Sit down, get comfortable and you'll be touching down before long.
Which airlines fly direct from Ontario Airport to SAN?
You won't find any airlines operating directly between ONT and San Diego Airport, so be ready to make at least one stop on your journey. A layover, whether short or long, can be a good way to break up a trip!
Are Los Angeles - Ontario Intl. Airport (ONT) to San Diego Airport flight tickets cheaper when they're purchased at the last minute?
It is possible to pick up a fantastic last-minute deal from ONT to San Diego Intl. Airport (SAN), but it can also be hit-or-miss. As many airlines release seats up to a year in advance, it's worthwhile keeping an eye on fares early and being ready to pounce when you spot a good bargain. Expedia compares air carrier prices and updates flight deals all the time, so you can rest easy knowing you're always getting the latest offers.

Travel information

Travel information

Origin airport
Los Angeles - Ontario Intl.
Destination airport
San Diego Intl.
Distance
151 km

Book with confidence

Book with confidence

Los Angeles to San Diego Flights

Sometimes you just need to get out of town or maybe you’re looking for a change of scenery. Regardless of the reason, a flight from Los Angeles to San Diego will do just the trick! Go on, plan to see all the famous landmarks and eat your weight in the local cuisine. Your trip is beckoning, so answer the call by packing your suitcase and filling your travel itinerary with exploring San Diego.

Whether you’re flying for business or jet-setting on your personal time, you’ve come to the right place. Here at Expedia.com, we’ll pair you up with ONT to SAN flights that won’t make your bank account wince. Ready to temporarily leave behind Los Angeles for new horizons? Browse through our cheap airfare, and filter by flight times and dates until you find just what you had in mind. From flights without layovers to ones that arrive early in the morning, you’ll come across plane tickets that suit your travel preferences. You can even bundle your flight to SAN with hotels and car rentals to score even bigger savings.

All set to hit the clouds? Book your travel arrangements with us today and have left-over money to put toward your travel outings and adventures.

Los Angeles to San Diego Flights

Explore a world of travel with Expedia

Explore a world of travel with Expedia

Ontario nearby Airports

Los Angeles

Los Angeles Intl. to San Diego
₩335,800
*Available to Expedia members.