Find cheap flights from San Diego to Ontario


Find cheap flights from San Diego to Ontario

San Diego (SAN)
Fri 2/26
Fri 3/5
Any month
Compare vs. KAYAK |
Search hundreds of travel sites at once for deals on flights to Ontario

Good to know

Low season

February Best time to beat the crowds with an average 62% drop in price.

High season

March Most popular time to fly with an average 36% increase in price.

Average price round-trip

$261 (avg. price over the last 2 weeks)

Good deal round-trip

$390 or less

Good deal one-way

$353 or less

When to book flights from San Diego to Ontario

Estimated round-trip price
Average price per month

Top tips for finding a cheap flight

  • Looking for a cheap flight? 25% of our users found flights on this route for $353 or less one-way and $390 or less round-trip.
  • High season is considered to be February, March and April. The cheapest month to fly is February.
  • Morning departure is around 44% more expensive than an evening flight, on average*.
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

FAQs for booking flights from San Diego to Ontario

Are there Ontario travel restrictions currently due to Coronavirus?

How long does a flight from San Diego to Ontario take?

Which airlines provide the cheapest flights from San Diego to Ontario?

Do I need a passport to fly between San Diego and Ontario?

What’s the cheapest day of the week to fly from San Diego to Ontario?

Which airports will I be using when flying from San Diego to Ontario?

How does KAYAK find such low prices on flights from San Diego to Ontario?

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from San Diego to Ontario?

What is the Hacker Fare option on flights from San Diego to Ontario?

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from San Diego to Ontario?

Top 3 airlines serving San Diego to Ontario

Scores according to KAYAK customer reviews

Alaska Airlines
Overall score based on 29,258 reviews
Airline reviews

Cons: "We landed almost 2 hours late and we missed a very important reservation. I am very disappointed."

Cons: "The plane was VERY hot - uncomfortably so."

Pros: "Very well looked after, couldn’t ask for more."
Cons: "Nothing, perfection."

Pros: "Clean plane, easy boarding"
Cons: "TSA just had an issue which delayed all passengers by an hour but Alaska couldn’t avoid the issue so not their fault"

Pros: "Everything"
Cons: "It was perfect"

Cons: "The pkane changed departure times, so i was stuck in airport until 440 pm and i had to pay $60, to change ticket."

Pros: "Loved Japan Airlines"

Pros: "Nobody was seating next to me."
Cons: "Wake me up for snacks"

Cons: "Delay taking off and delay arriving to gate due to scheduling."

Pros: "Nothing"
Cons: "Speed and care"

Pros: "N/A"
Cons: "N/A"

Pros: "People were friendly and super helpful."

Cons: "We got in later than estimated."

Pros: "Arrived early"

Pros: "Comfort"
Cons: "Better snacks"

Pros: "Efficientand smooth."

Pros: "I actually loved the fruit and cheese platter"

Pros: "It was all good."

Pros: "Not much"
Cons: "Just about everything"

Cons: "It would be great if there was power outlets for notebook on board/"

Pros: "Just great"
Cons: "Nothing"

Pros: "Great airline"

Cons: "Plane issues kept us on the tarmac for 2.5 hours before we took off"

Cons: "Couldn't find any way to input my TSA Pre-Check number so ended up standing in the long line... For that reason alone, I won't buy through Kayak again"

Pros: "Enjoyed the beer and wine."

Pros: "Everything went smoothly!"

Pros: "Wifi and outlets"
Cons: "Nothing"

Pros: "Love small planes. Lots of legroom and you can see everything."

Pros: "Punctuality and kindness off employees."
Cons: "N/A"

Pros: "Free baggage check and upgraded to "Premium" class was an awesome surprise!"
Cons: "N/A"

Pros: "Alaska Airlines"

Pros: "the folks at Alaska Airlines were super helpful and outgoing. They really make your happiness a priority."

Pros: "i luv flying :)"

Cons: "The middle seat is horrible there. It's tight, don't have a tray table in front of you or a pouch. Also the charger the row is right in front of you so the other two people plug there stuff right by your feet. You pay extra for this seat which I would never do again."

Cons: "Seat backs have very little padding."

Cons: "I was not able to use my TSA Pre Check and no agent would heklp correct the mistake"

Pros: "The people working Alaska were kind and professional."
Cons: "Nuthin particular"

Cons: "They left my luggage in Portland and made me have a two HR delay to get my bag"

Pros: "great"

Pros: "boarding and disembark were good for premier as was seating comfort"
Cons: "There is no substitute for a wide body aircraft"

Pros: "Delayed BC of Pilots schedule, boarded the knowing the pilots weren't even there yet waited 30 mins for pilots with no air-conditioning til the stewards called someone to turn on air... finally checking the plane and during that found there was something wrong with waited an extra 45 mins til we finally took out ...were supposed to arrive in Newark at 5:55 pm did land til 7:15pm that messed up my pick and the schedule"

Pros: "Online check in"

Cons: "2 hours late no updates... poor"

Pros: "You are asking for a review while I am still waiting for the plane that is an hour and a half late. Hard to give a positive review."

Pros: "Alll"

Cons: "I've flown with many airlines and the one thing that I appreciate the most when flying is having the ability to watch programs from the televisions on the back of the headrrst."

Pros: "Boarding process was quick and easy definitely worth the extra more compared to southwest"

Pros: "I liked that there were outlets on the seatbacks so that you could charge your electronic devices."

Pros: "The power plug to charge phones or tablets"
Cons: "Didn't like the fact that I couldnt choose a seat until 24hrs prior to my trip.."

Cons: "Need more space"

Cons: "Don’t get the egg salad breakfast sandwich. It’s got more turkey and cheese than egg salad."

Pros: "I was arriving only 45 minutes prior to departure time. Not able to check in my luggage. AA ticketing agent allowed me to bring my garment bag through security and to be checked in at the gate. Thank you very much!"
Cons: "Nothing really. Very satisfied customer here."

Pros: "Everything but the smiling, smile more !!"
Cons: "everyone needs to smile more. This is the job they chose, a smile goes along way!"

Pros: "Not a lot"
Cons: "Email flat attend it was very rude to a handicapped gentleman."

Pros: "Comfortable seats"
Cons: "Free BBQ DINNER"

Cons: "30 min late"

Cons: "Just about everything"

Cons: "Damaged one baggage, and delayed arrival of other baggage for 2 days that forced me to cancel a following trip."

Cons: "Seat pitch was too tight, especially when the person in front of me pushed their seat back."

Pros: "Absolutely nothing"
Cons: "Everything"

Pros: "Shory"

Pros: "Nothing"
Cons: "Crews service"

Cons: "I find seats a bit narrow"

Cons: "delayed/not on time"

Pros: "Nothing"
Cons: "Delayed, bumpy and staff didn’t look for headphones"

Cons: "3 boarding doors less than 50 feet apart with departures leaving within 15 min of each other created a difficult to penetrate gaggle."

Pros: "Everyone had to relocate to 3 different gates which was a bit annoying. Because I was tired i was not as patient as I normally am but was finally glad that we boarded and was on my way back home."

Pros: "The flights didn't have any delays"
Cons: "Seat wasn't comfortable."

Cons: "Surprised to see they charge $50 carry on fees at the gate."

Pros: "Courteous staff! Very accommodating."
Cons: "The company did great, no complaints."

Pros: "The staff was very helpful"
Cons: "I did not like the fact that, I was ask to help a non English person, whom spoke French find their way to the departure area from check in. I could not understand their broken English. That I feel is the job of the person or staff trying to check them in."

Cons: "Racist gate agent made me check my baggage even though it fit."

Pros: "Staff at SAN was good helpful. Check in was seemless."
Cons: "Wishing that they would serve something to drink — even if I would have to pay for it. Flight attendant gave me wrong directions and I left for another terminal while my carry on luggage (which had to be checked) was still at the gate. I had to wait until it arrived at baggage claim."

Pros: "The friendly and attentive flight staff."

Pros: "Smooth ride"
Cons: "Not accessible. The tv wasn’t captioned"

Cons: "The flight was a bit delayed and was not cleaned at all, may be because of short of time, but minimized the further delay, so acceptable."

Pros: "The entertainment system is awesome made the flight go by so fast seats were comfortable"
Cons: "While using the entertainment system the airplane announcement system was way too loud I believe you are going to have lawsuits eventually for loss of hearing everybody around me was jerking to take the earphones out of their ears because the announcement system was way too loud across the entertainment system"

Pros: "Service in coach was nice and attentive."

Cons: "Poor customer service"

Pros: "Priority boarding."
Cons: "Connection from SAN to PHX seemed cheaply made."

Cons: "Essentially a bus ride with the comfort of a wooden bench."

Pros: "Prompt boarding"
Cons: "I could never sync in the entertainment app and wifi"

Pros: "Quick boarding"
Cons: "No food or beverage service"

Pros: "Flt time!"
Cons: "Boarding announcer was rude"

Cons: "Seat was awkward. Staff didn't respond to 2 calls of with the button. Air seemed exceptionally dry and was oddly warm."

Pros: "Exceptional customer service"
Cons: "No food no entertainment so that's the only reason I gave 1 star to those"

Pros: "I likes that I was able to pick my seat for the same price."

Pros: "Seat was comfortable"
Cons: "Gate agent told me my bag would fit under seat but when I got on board found it would not and had to do gate check."

Cons: "Taking 2 shuttle buses to transfer from AA to PAL."

Pros: "Very timely. Boarding, take off, landing - all on time"
Cons: "Their restrictions for carry on size... had to check my small suitcase because it was over their size limit. I was able to carry it on on my trip going (fits perfectly in the overhead bin) but on the way back it was too big.."

Cons: "No choice in food. Flt attended said he would try to find a sandwich or snack left over from coach but he never offered anything."

Cons: "Walking through TSA in San Diego there is an agent picking people out and telling them there bag is too big to be carried on ( the same carry on bag I've used for years ) and making people go pay to check them. However some people are being allowed to check their bag at the gate for free. No one at the airport working for them had any good customer service skills. Wont fly with them again"

Pros: "we had all the necessary conditions for work, rest, sleep and eating. The level of service has increased"
Cons: "Nothing"

Pros: "Good."

Pros: "Seats are the most uncomfortable seats ever"

Pros: "Nothing"
Cons: "The customer service and the lack of assistance from the airline ground staff was horrible ."

Pros: "Seats reclined, beverage service."
Cons: "Wish movie would have been a better movie, not animated."

Cons: "Fat ads sitting next to me should have purchased 2 seats"

Pros: "Kayak did not refund or have an option to exchange my ticket for a later time in the year."
Cons: "My tickets were 415.00 and I wanted to change the dates and couldn't since I bought from a third party I had to pay an extra 400."

Pros: "I was comfortable. I entered and exited the plane very fast."

Cons: "Very nice. Smooth. Fast"

Pros: "Yes"
Cons: "Thanks , perfect , not a thing"

Cons: "Frontier is an airlines that doesn't care about its customer. Period!"

Pros: "None of the self check in stations was working so there’s one very long line to check in with attendants. No effort by staff to get passengers with current flights to get to front of line. Had to convince staff that small women’s pack was a purse and not a 2nd bag to be checked in for $50. Woman in front of me had a more traditional large purse and encountered no problems."

Pros: "Nothing very disappointed with Frontiers service"
Cons: "From Ontario to Austin we were charge $50 for each carry on luggage we 1 for me 1 for my husband total $100 charge From Austin to Ontario carry on luggage was free why?Im filling complained about the airline"

Pros: "Friendly staff."

Cons: "Delayed twice"

Pros: "Nothing"
Cons: "Everything"

Pros: "Nothing was 2 hrs late"
Cons: "Was 2 hrs late"

Cons: "Seat"

Cons: "Pay for snacks!? Water not free? Won't fly this again"

Pros: "Cost of ticket"
Cons: "Paying for bag delays and the chairs and no free snacks offered"

Pros: "Comfort seating is spacious."
Cons: "Doesn’t make sense to charge for water."

Pros: "Spaceous"
Cons: "A lot of turbulence...snacks were over priced but that's to be expected"

Cons: "Reasonable fare"

Cons: "Kept us on board with little to no communication for an hour and a half after landing"

Pros: "The cheap price"
Cons: "No complementary drinks such as soda or snacks such as peanuts or pretzels"

Pros: "I had a medical emergency onboard and the captain took steps to make sure that medical attention was there when we landed. He also said hello. I really appreciated that!"

Pros: "Nothing!!!"
Cons: "Long layover. Lies about why there was a layover. Disrespectful people at the counter. If I could give neg stars I would. Lol"

Cons: "Boarded late again with no communication from any frontier reps"

Cons: "They charge me $45 for a carry on never in my life i would imagine"

Cons: "On runway for 20+ minutes"

Cons: "Delays for hours (5) and missed connections. On top of that, they couldn't get me to me San Diego destination. The best they could do was L.A....three hours away ! The offered no voucher and I would have to pay for my own hotel for the extra night stuck in Denver."

Cons: "Seat rows seemed a little close"

Pros: "Super cheap."
Cons: "It was hot and very cramped and the chairs didn't recline."

Pros: "A good first experience"

Pros: "Nothing- staff was rude, we sat in glorified folding chairs, had to pay 45 dollars for a carry on. What an absolute joke of an airline I sincerely hope frontier goes out of business entirely."

Cons: "Lost luggage after i was force to pay and check"

Pros: "It sucked."

Pros: "Everything"

Cons: "Uncomfortable seating"

Cons: "Delays"

Pros: "These were not good flights."
Cons: "They delayed our flights 3x then cancelled them. Then they couldn't rebook us for 4 days put. They made no offer to reroute, or work with another airline or offer hotel vouchers. HORRIBLE TREATMENT."

Pros: "Cheap"
Cons: "This airline charges for everything. Check in, bags, seat, drinks, snack. For the really low price you really can't beat it. I would fly frontier again if needed."

Pros: "We landed early."
Cons: "The gate wasn't ready so we sat in the plane for 40 minutes waiting."

Pros: "Boarding was quick and easy"
Cons: "The chairs were uncomfortable to sit in for long flights."

Pros: "I am thankful to have received an email update."
Cons: "The 7.5 hr layover was not what i payed for."

Pros: "landed in wrong airport without notice and were not given any other information how to get to original destination so we had to pay a shuttle to drive us 2 hours to it."

Pros: "I like the crews on Frontier"
Cons: "I hate all the cost. 30 bucks for a carry one, 40 bucks to reserve seating, etc."

Cons: "Boarding was 15-25 min late on all my Frontier flights."

Cons: "Waiting on the tarmac for a gate"

Cons: "Had to wait after landing in Denver for gate to be free. About a 30 minute wait."

Cons: "took 5 flights on a XC trip in two weeks. 4 of the 5 flights were late/delayed."

Pros: "I asked for a seat change and they were so accommodating. In general, efficient but also friendly and elaxed service. I also liked the intercom messages, they explained the reason for the rule."
Cons: "Nothing"

Pros: "You have to pay $45 for carry-on luggage - this was not made clear anywhere in the purchase process."

Pros: "The check in guy ,I think his name is Lee (?) Great guy.Give him a raise"

Pros: "Didn't like having to pay for checked luggage."

Pros: "Nothing"
Cons: "Long lines to check in. Only three people working the counter. No communication with passengers waiting to check-in. Very poor communication with people waiting in line. Did not like the fact that I had to pay to select a seat."

Pros: "Getting off the plane."
Cons: "Frontier is all around archaic in a modern world."

Read more about Alaska Airlines
COVID-19 information

Safety measures for airlines flying from San Diego to Ontario

Airlines flying from San Diego to Ontario have enacted additional safety measures and adjusted policies to better accommodate travelers. Policies vary by airline.

Heightened sanitation

Daily cleaning, installation of cabin HEPA filters on flights from San Diego to Ontario

Mandatory masks

Masks required on board, masks provided on flights from San Diego to Ontario

Social distancing seating

Middle seats unavailable to book on flights from San Diego to Ontario

Pre-flight testing

Testing for antibodies, testing for symptoms for flights from San Diego to Ontario

Book cheap flights from San Diego to Ontario

Recent round-trip flight deals

1 stop
American Airlines
8h 12m
1 stop
American Airlines
7h 57m
1 stop
American Airlines
7h 45m
1 stop
American Airlines
7h 57m
1 stop
Alaska Airlines
14h 34m
1 stop
Alaska Airlines
7h 05m
1 stop
American Airlines
6h 26m
1 stop
American Airlines
7h 38m

Recent one-way flight deals

1 stop
16h 34m
2 stops
32h 59m
3 stops
Multiple Airlines
26h 39m
1 stop
American Airlines
14h 53m
Linear Air Taxi
0h 46m
  • Round-trip
  • One-way
  • Multi-city
  • Trip Builder
  • Economy
  • Premium Economy
  • Business
  • First
  • Multiple
  • Economy
  • Premium Economy
  • Business
  • First
  • Economy
  • Premium Economy
  • Business
  • First
  • Economy
  • Premium Economy
  • Business
  • First
  • Economy
  • Premium Economy
  • Business
  • First
  • Economy
  • Premium Economy
  • Business
  • First
  • Economy
  • Premium Economy
  • Business
  • First