Flights
Hotels
From
To
1 traveler
Unsupported Browser!
Find Flights
Finding cheap flights is simple. More than 36 million people last year saved hundreds by using our flights tool.
Flights
Hotels
Round-trip
One-way
1 traveler
Unsupported Browser!
Find Flights
Finding cheap flights is simple. More than 36 million people last year saved hundreds by using our flights tool.

Cheap Flights from Ontario to San Diego, CA, United States - ONT to SAN Last modified: May 29, 2016 7:45 AM

When Can I Buy the Cheapest Flight from Ontario to San Diego (ONT to SAN)?

Airlines can adjust prices for plane tickets from Ontario to San Diego based on the day and time that you decide to book your flight. We have collected data from all airlines, and have discovered that the best days to book flights are Tuesdays, Wednesdays, and Saturdays. Read our article to find more information about the best time to buy airline tickets.

Airports for Your Route

These pages contain information about the major airports in Ontario and San Diego, so you can feel comfortable knowing how to get around whether you are about to take off or you just landed.

Cheap Domestic Flights to San Diego - SAN

FlightsAirlineLowest Price
Los Angeles to San Diego American, Alaska, United $208
Las Vegas to San Diego American, Alaska, Spirit, United $81
Burbank to San DiegoCheck Dates
Santa Ana to San DiegoCheck Dates
Long Beach to San Diego American, Alaska, United Check Dates
San Luis Obispo to San Diego United $331
Santa Barbara to San DiegoCheck Dates
Bakersfield to San Diego American, United $386
Yuma to San Diego American, Alaska $258
Las Vegas to Los Angeles American, Spirit, United, Virgin America $71
Los Angeles to Phoenix American, Alaska, Spirit, United, Great Lakes $75
Los Angeles to San Francisco American, Alaska, United, Virgin America $128
Los Angeles to PalomarCheck Dates
San Diego to Los Angeles American, Alaska, United $211
Las Vegas to Long Beach American, Alaska, JetBlue $117
Las Vegas to Santa Ana American, Alaska, United $194
San Diego to Las Vegas American, Alaska, Spirit, United $81
Las Vegas to San Francisco American, Alaska, JetBlue, Frontier, United, Virgin America $67
Las Vegas to Phoenix American, United $137
Las Vegas to PalomarCheck Dates
Los Angeles to Palm Springs American, Alaska, United $363
Las Vegas to Palm Springs American, Alaska, United, Virgin America $244
Los Angeles to Ontario American, Alaska, United $359
Las Vegas to BurbankCheck Dates
Las Vegas to OntarioCheck Dates
Burbank to Las VegasCheck Dates

Cheap International Flights to San Diego - SAN

FlightsAirlineLowest Price
Mexicali to San Diego American, AeroMexico, Alaska, United, Volaris $967
Los Angeles to Tijuana Interjet, American, AeroMexico, Alaska, United, Virgin America, Volaris $431
Las Vegas to Tijuana American, AeroMexico, Alaska, United, Volaris $436
San Diego to Tijuana American, AeroMexico, Alaska, Spirit, United, Volaris $749
Cheap Flights from Ontario to San Diego, CA, Airfare Search for ONT to SAN, Airline One-Way and Roundtrip Schedules