Cheap Delta flights from Ontario to San Diego (ONT→SAN)

  • notification illustration

    Be in the know

    Get alerts if flight prices drop or rise*
  • deals illustration

    Book smarter

    Save up to 25% on select hotels after you book a flight*
  • trophy illustration

    Earn twice

    Earn your airline miles on top of our rewards
    Sign in

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

August is typically the cheapest month to fly

From ₹14,492 - ₹57,318 per traveller.

Frequently asked questions

How much is a Delta Air Lines flight from Los Angeles - Ontario Intl. Airport (ONT) to San Diego Intl. Airport (SAN)?
Landing cheap one-way Delta Air Lines flights from ONT to SAN on Expedia couldn't be easier — just filter by "Price (lowest to highest)." Or check out our affordable return fares for your next exciting holiday.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.
What is the cheapest month to fly from ONT to SAN with Delta Air Lines?
January is one of the cheapest months to travel to San Diego with Delta Air Lines. You could also find great prices on one-way and return tickets in November.
Does Delta Air Lines fly nonstop from Los Angeles - Ontario Intl. Airport (ONT) to San Diego Intl. Airport (SAN)?
Select our "Nonstop" filter when browsing for direct Delta Air Lines flights from ONT to SAN. You can also compare other carriers servicing the same nonstop trip.
What airports does Delta Air Lines fly into in San Diego?
Get on a Delta Air Lines flight from Los Angeles - Ontario Intl. Airport (ONT) to San Diego, and you're most likely to land at San Diego Intl. Airport (SAN). This is the airline's main hub in this destination.
Can I change or cancel my Delta Air Lines flight from Los Angeles - Ontario Intl. Airport (ONT) to San Diego Intl. Airport (SAN)?
Depending on your ticket type, a fee generally applies if you cancel or reschedule your booking more than 24 hours after confirmation. To secure flexible fares, select our "Changes included" or "No cancel fee" filter when you search for flights. For more information on cancelling or modifying your reservation, go to "Trips," select your flight and tick "Manage Booking."

Travel information

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

Explore a world of travel with Expedia

*Available to Expedia members.