Cheap Flights from Ontario to San Diego Starting at $59

Helping travelers to find the best flight offers

Cheapest flights from Ontario to San Diego

Airfare from Ontario to San Diego by month

Airlines operating on route

Starting at $59

Direct Flights from Ontario to San Diego

San Diego city image

Los AngelesSan Diego

LAXSAN

06/25/2025

Departure date

Direct flight

United Airlines

UA5612

Starting at $381

San Diego city image

Los AngelesSan Diego

LAXSAN

06/27/2025

Departure date

Direct flight

United Airlines

UA5612

Starting at $371

San Diego city image

Los AngelesSan Diego

LAXSAN

07/10/2025

Departure date

Direct flight

United Airlines

UA4643

Starting at $295

Schedule of direct flights from Ontario to San Diego

A direct flight is the easiest way to get to your destination. The following airlines operate non-stop flights from Ontario to San Diego:

Ontario airports overview

LAX
United Airlines
Hawaiian Airlines
Spirit Airlines
Airlines flying to this airport
$68
Starting at
$191
on average

San Diego airports overview

Frequently asked questions (FAQ)

Answers to questions about the route that travelers are most interested in.

Special offers and sales on air tickets from Ontario to San Diego

We keep tight track on airlines' pre-holidays sales and other special offers occurences all the time to let you save maximum amount of funds while traveling to your family or just going out on vacation.

Alternative routes