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Cheap Flights from San Diego to Ontario
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1 Passenger
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Adults 18+
Children 2-11
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Average price per month
- Low Season: February
- High Season: May
- Prices for this route are volatile and fluctuate from month to month.
- The cheapest flights are usually bought in February, January and April.
- High season months are June, July and May. However, it's not the rule and you should always search current flight deals.
Price increase as travel date approaches
- Flight prices for this route increase by 49% if you book last minute. Hover on the graph above to see for yourself!.
- To grab the lowest price possible, you should buy your flight around 25 days before departure!
- Consider booking at least 13 days before departure to increase your chances of getting a low price.
- Generally, it's safe to book between 90 and 60 days in advance.
San Diego to Ontario Flight Information
| Flights Depart From | San Diego () |
| Flights Arriving To | Ontario () |
| Cheapest Airlines | |
| Popular Airlines | Delta Air Lines, WestJet, Air Canada, American Airlines, United Airlines |
| Flights Depart From |
| San Diego () |
| Flights Arrive In |
| Ontario () |
| Cheapest Airlines |
| Popular Airlines |
| Delta Air Lines, WestJet, Air Canada, American Airlines, United Airlines |
Most Reliable Airlines flying to Ontario
- According to our data, Delta Air Lines, WestJet and Air Canada have the highest overall rating.
- The following airlines have the highest chance of on time arrivals: Delta Air Lines, American Airlines and United Airlines.
- If customer service is important for you then you should consider flying with Delta Air Lines, WestJet and Air Canada.
| Airline | Overall Rating | On time arrival | Check-in & Boarding | Cleanliness | Customer Service | Food & Beverage | Entertainment | Legroom | Seat Comfort |
|---|---|---|---|---|---|---|---|---|---|
Delta Air Lines |
3.8 | 4.5 | 4.0 | 4.0 | 4.0 | 3.5 | 4.0 | 3.5 | 3.5 |
WestJet |
3.7 | 4.0 | 4.0 | 4.0 | 4.0 | 3.5 | 3.0 | 3.5 | 3.5 |
Air Canada |
3.4 | 3.5 | 3.5 | 3.5 | 3.5 | 3.0 | 3.5 | 3.5 | 3.5 |
American Airlines |
3.3 | 4.0 | 3.5 | 3.5 | 3.5 | 3.0 | 3.0 | 3.5 | 3.0 |
United Airlines |
3.3 | 4.0 | 3.5 | 3.5 | 3.5 | 3.0 | 3.0 | 3.0 | 3.0 |
Overall Rating
4.0
On time arrival
4.5
Check-in & Boarding
4.0
Cleanliness
4.0
Customer Service
4.0
Food & Beverage
3.5
Entertainment
4.0
Legroom
3.5
Seat Comfort
3.5
Overall Rating
3.5
On time arrival
4.0
Check-in & Boarding
4.0
Cleanliness
4.0
Customer Service
4.0
Food & Beverage
3.5
Entertainment
3.0
Legroom
3.5
Seat Comfort
3.5
Overall Rating
3.5
On time arrival
3.5
Check-in & Boarding
3.5
Cleanliness
3.5
Customer Service
3.5
Food & Beverage
3.0
Entertainment
3.5
Legroom
3.5
Seat Comfort
3.5
Overall Rating
3.5
On time arrival
4.0
Check-in & Boarding
3.5
Cleanliness
3.5
Customer Service
3.5
Food & Beverage
3.0
Entertainment
3.0
Legroom
3.5
Seat Comfort
3.0
Overall Rating
3.5
On time arrival
4.0
Check-in & Boarding
3.5
Cleanliness
3.5
Customer Service
3.5
Food & Beverage
3.0
Entertainment
3.0
Legroom
3.0
Seat Comfort
3.0
Good to know:
Enter your preferred departure airport and travel dates into the search form above to unlock the latest Ontario flight deals.
Track the flight prices from San Diego to Ontario by subscribing to Fare Alerts to never miss the best deals possible.
Did you know that you could find even better deals when you use our Mobile App?. Top Destination Hotels Of The Day ()
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Frequently Asked Questions
- Which airlines fly from San Diego to Ontario most often?Delta Air Lines, WestJet, Air Canada, American Airlines and United Airlines are the top.
- How is Justfly.com so good at finding cheap flights?We've taken an oath of secrecy and vowed never to say. Just kidding. Our team and technology allows us to browse through hundreds of airlines and hundreds of thousands of flights to find the lowest prices. Then we pass the savings on to you.
- Can Justfly.com help me save money in any other way?We're glad you asked. We help you save money with our Fare Alerts, Price Trend charts and multi-ticket bookings. We also help you save on hotels and car rentals.
- How many airlines does Justfly.com search to find affordable flights?We typically search over 400 airlines.
- Can Justfly.com's Price Trend tool really tell me the best time to buy tickets?Absolutely! That's why we've made it accessible to you.
- Will the price of my flight change?Flight prices and availability change often. To counter this, we update the important data as often as possible every step of the way.
- How will I receive my booking confirmation and travel information?We'll send you an email with the important details!
- Can you cancel or change Justfly.com flights?You sure can. But give us a call first. We'll do our best to find a solution. However, in some cases, if we cancel your booking, we'll have to charge an administrative fee of $75 (domestic), $125 (trans-border between Canada and USA) and $200 (international).
- Are Justfly.com's tickets refundable?All bookings are currently non-refundable.
- How do I contact Justfly.com?To find answers to all of your questions, click here to visit our support page.