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$41 Find cheap flights from North America to Ontario

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to Ontario departing on 6/13. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
0 bags
Thu 6/27
Thu 7/4

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Good to know

Low season

January

High season

May

Cheapest flight

$41
Best time to beat the crowds with an average 12% drop in price.
Most popular time to fly and prices are also 7% lower on average.
Flight from San Francisco to Ontario

FAQs for booking flights from North America to Ontario

  • How does KAYAK find such low prices on flights from North America to Ontario?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from North America to Ontario.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Ontario from North America is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from North America to Ontario?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Ontario with an airline and back to North America with another airline.

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

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Ontario from North America up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Prefer to fly non-stop from North America to Ontario?

Find which airlines fly direct from North America to Ontario, which days they fly and book direct flights.

Nonstop departures

North America to Ontario

Monday

Aeromexico, Air Canada, Air France, +23 more

Aeromexico, Air Canada, +24 more

Tuesday

Aeromexico, Air Canada, Air France, +24 more

Aeromexico, Air Canada, +25 more

Wednesday

Aeromexico, Air Canada, Air France, +23 more

Aeromexico, Air Canada, +24 more

Thursday

Aeromexico, Air Canada, Air France, +24 more

Aeromexico, Air Canada, +25 more

Friday

Aeromexico, Air Canada, Air France, +22 more

Aeromexico, Air Canada, +23 more

Saturday

Aeromexico, Air Canada, Air France, +23 more

Aeromexico, Air Canada, +24 more

Sunday

Aeromexico, Air Canada, Air France, +24 more

Aeromexico, Air Canada, +25 more

See more direct flights

Nonstop returns

Ontario to North America

Monday

Aeromexico, Air Canada, Air France, +23 more

Aeromexico, Air Canada, +24 more

Tuesday

Aeromexico, Air Canada, Air France, +24 more

Aeromexico, Air Canada, +25 more

Wednesday

Aeromexico, Air Canada, Air France, +23 more

Aeromexico, Air Canada, +24 more

Thursday

Aeromexico, Air Canada, Air France, +24 more

Aeromexico, Air Canada, +25 more

Friday

Aeromexico, Air Canada, Air France, +22 more

Aeromexico, Air Canada, +23 more

Saturday

Aeromexico, Air Canada, Air France, +23 more

Aeromexico, Air Canada, +24 more

Sunday

Aeromexico, Air Canada, Air France, +24 more

Aeromexico, Air Canada, +25 more

See more direct flights
See more direct flights

Top 5 airlines serving from North America to Ontario

 
Need help choosing which airline to fly with from North America to Ontario? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
Alaska AirlinesOverall score based on 9192 reviews
7.3Food
7.3Entertainment
8.2Boarding
7.9Comfort
8.6Crew
Airline reviews

I fly Alaska regularly and they have great service. From boarding, in cabin to deplaning.

8.0 ExcellentJer, May 2024LIR - LAX
Read more about Alaska Airlines reviews

I fly Alaska regularly and they have great service. From boarding, in cabin to deplaning.

The one stewardess was rude about helping me put my bag in overhead….she said “ Is it heavy ?” (I am 73 yrs old)

The flight was about an hour late, and there was notable turbulence for a good part of it. But of course, that was not Alaska Air’s fault, and I think the crew did a good job of keeping it safe. Service suffered a little as a result (I wish I had been offered the option of purchasing food). Overall, it was ok, because we landed safe and sound. Thanks!

As a frequent traveler, I have found my recent experiences increasingly frustrating due to the frequent and drastic changes to my flight schedule with no prior notice. These unexpected changes have severely disrupted my travel plans, and the communication regarding these adjustments has been poor. Despite reaching out to customer service, the responses have been unsatisfactory, and no compensation was offered to address the inconvenience caused. I believe Alaska Airlines needs to significantly improve its handling of flight schedules, enhance communication with passengers, and provide better customer service to ensure a smoother travel experience.

Flight was delayed 2 hours. Other than that, it was a good flight.

The flight was late getting in, so many were stressed. The snacks for a LONG flight was not enough.

The whole experience went very well except the rest rooms were a disaster

Sat on tarmac for 30 minutes despite staring at three empty gates, one of which we eventually pulled into

Everything was great. Flight was on time with no issues. It was a short connecting flight so ww didn't have food offered. The gate we got off at was very close to our connecting flight gate so that was very easy.

Pilot warned us it was going to be bumpy, which I usually like when it is, but it wasn't, so I spent most of the flight unnecessarily wondering when it was going to get rough. Just can't win sometimes. Ha!

Had to change aircraft due to a faulty door. Surprisingly it only caused about an hour and a half of delay. Delta handled this situation as well as can be expected.

Your crew could maybe answer the call bell at least one of the times I pressed it. I pressed it first time with 2.5 hours left in our flight bc my partner was hungry and wanted a sandwich. We finally got the sandwich with 40 mins left in the flight.

The Flight crew didn’t serve us until about 1.5 hours into the flight because of turbulence but after it ended it was fine to move around. They served us water only and snacks and then NEVER, NOT ONE TIME came through to collect trash until right before landing about 1.5 hours later. There was absolutely no need for that. They crew was just standing around talking and visiting with each other and really never tried to see if we might want something besides water or even try to come pick up trash. This is VERY unusual for a Delta flight but it was not what I would have expected for a 4 hour flight.

There was a loud squeaky sound the whole time we were flying.

Had a broken tray in business class. Crew just shrugged it off.

I didn’t like that I could not select my seat and was assigned a seat when I checked in at LAX

Great experience overall. Check in at Austin was congested as they only have about 6 check in kiosks, one was broken, and there was a lot of Spring Break travelers.

I was sitting at comfort +. One of the Asian male crew was so loud when he delivered service. When he asked questions or what food you need, he was shouting. He must be a prison guard before going Delta.

Bag drop off was slow and annoying. Only 2 agents at the entire delta desk, and no one directing traffic for what line to be in, many confused people slowed down the process. Boarding was fine. Seats in Delta comfort plus were fine. Snacks were great! Definitely a bonus. The entertainment system was awful — old, slow, not responsive, and completely unable to play games due to some kind of error. But on the other hand, thank you to Delta for the free WiFi. That made it better.

Everything was very good other than I had selected a specific seat when I booked the flight and they changed it once I checked-in the day before my flight. I was still in first class but lost my aisle seat for a window seat. Being tall, the aisle offers more comfort so I always select an aisle seat.

Dinner was okay but the breakfast was not eatable on the flight San Francisco to Zurich.

I really do not like the basic in basic economy.

Marked by flight delays on all segments of the trip. Food in first class cabin was mediocre and overhead cabin storage was not adequate. Overall, the premium charge for first class cabin was poor and over hyped. This will be our last flight with UA.

Check in etc was very good. As for on the plane, it was like flying in a freezer. It was so cold, i have flown for years and never been so cold on a plane. Staff on board said its always cold when flying which is a load of rubbish. They wouldnt put any heating on and now i have the flu because of this .

I’ve had a couple flights this week on United that were delayed by an hour or more

Should have video screens Plane audio was poor and without wired connection hard to understand crew. Should serve more than just cups of water and pretzels on six hour flight. Did not see crew rest of flight. Fix charging sockets to retain charging blocks.

My bag was lost with my medicine and I am very inconvenienced. I don’t know what happened, however I want you to do a better job on getting people’s bag back

Generally good but there wasn’t any staff available when my luggage didn’t appear at baggage claim in Fresno. It took about half an hour to locate a staff member to open up the locked room where it was being kept.

Do not like the feeling of being in the basic economy. Everyone should feel good no matter what.

Our original business class flight was cancelled so we not only downgraded but we were also spread out across the plane not sitting together in separate middle seats. My poor kids were scared and couldn’t see me on the flight and the crew wasn’t sensitive to the situation and what the airlines did to us. Very dissatisfied with United airlines.

There were delays on both ends. It made it less than excellent. This plane was great though

Everything was great except for the wifi was junk. Crew was super friendly and helpful

Attendants were rude. Scowling. Seats were miserable and we paid extra.

Somehow I got “offloaded” even though I had my boarding pass and was in transit Food is horrible Staff were nice and cheerful No headphones were provided on 11 hours flight

Fight crew was not very attentive and the bastions were gross!

Our flight was great we left Kona earlier and got into LAX almost an 1hour earlier as well. LAX AA is in repair so to get out and found our bus to get pick up was a bit confusing.

Plane was good but was delayed. probably not AA fault but caused a 1 hour delay. Seating was cramped.

The staff were very helpful with lots of refreshments on offer. The toilets were clean. The seats were comfortable and entertainment was good. No complaints, it was excellent.

amazing! they were so kind and allowed us to sit on empty seats so we could stretch our legs and sleep good. Food is amazing as well plus dessert in the middle of the flight!

5 hour flight - full flight - not enough room to use my computer - slightly delayed - Admirals club was excellent quality food, drink made up for flight seating. No food offerred on flight, you ahd to prebook.

It was ridiculously hard to check in for the flight, and Frontier charged us a LOT of money to have a carry on suitcase, and then told everyone we could not carry on bags and had to check them through at the gate, and didn't refund the extra money we paid to have the suitcase as carry on.

I had a terrible experience with Frontier. I arrived before the 60 minute cut off and was told that Frontier has a two hour window for bags. I was then told the next available flight wasn’t until the end of the day (I had booked a 6am flight). I took a look around and saw other people being told that they could not board their flights or that they had to pay additional fees. I opted to rebook on American Airlines. There’s absolutely no straightforward way to contact Frontier, so this ticket was a complete waste of money. Oh - and the kicker is that the lady lied about the two hour cut off.

Frontier won’t help you at the airport without paying $25. Carry on was $75. Then you get on the plain and every beverage or snack is also a charge. Seats are hard and real packed in. I would never fly them again.

Worst experience I have seen. The flight was cancelled without any reason.

My experience with frontier staff at the Denver airport was absolutely horrible. The manager on duty was even worst if was the worst experience I have ever had, I have never been treated so poorly as a customer in my life! The staff was extremely rude, eye rolls and attitude and then refusal to help me at all. I wish I could never fly frontier again that’s how horrible it was!

The Frontier app wasn’t working. So I could not pay for a carry on the week prior to flying. They charged me 99$ at the gate to carry on a duffle bag.

Good for the price. My only complaint is that the pilot should keep the air flowing while passengers are waiting to getting out of airplane.

Plane could have been more on time. More leg room .

I arrived 1 hour prior to boarding, and they said I was too late for a domestic flight. First time I heard that :-(

Check in online was easy. Seats aren’t very comfortable

Book cheap flights from North America to Ontario

Recent round-trip flight deals

6/18Tue
nonstopFrontier
1h 23mSFO-ONT
6/25Tue
nonstopFrontier
1h 27mONT-SFO
$54
6/11Tue
nonstopFrontier
1h 23mSFO-ONT
6/18Tue
nonstopFrontier
1h 27mONT-SFO
$58
7/21Sun
nonstopAlaska Airlines
2h 33mSEA-ONT
7/24Wed
nonstopAlaska Airlines
2h 35mONT-SEA
$187
6/26Wed
nonstopUnited Airlines
1h 35mSFO-ONT
7/3Wed
nonstopUnited Airlines
1h 20mONT-SFO
$197
9/1Sun
nonstopAlaska Airlines
2h 35mSEA-ONT
9/6Fri
nonstopAlaska Airlines
2h 38mONT-SEA
$197
9/1Sun
1 stopDelta
6h 16mDFW-ONT
9/4Wed
1 stopDelta
8h 37mONT-DFW
$216
8/1Thu
1 stopDelta
7h 01mDEN-ONT
8/6Tue
1 stopDelta
4h 54mONT-DEN
$216
6/21Fri
nonstopUnited Airlines
1h 32mSFO-ONT
6/23Sun
nonstopUnited Airlines
1h 25mONT-SFO
$229
6/27Thu
1 stopAmerican Airlines
3h 48mDEN-ONT
7/2Tue
1 stopAmerican Airlines
4h 17mONT-DEN
$247
8/31Sat
1 stopAmerican Airlines
8h 33mJFK-ONT
9/7Sat
1 stopAmerican Airlines
8h 20mONT-JFK
$254

Search by stops

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Recent one-way flight deals

6/13Thu
nonstopFrontier
1h 23mSFO-ONT
$41
7/16Tue
nonstopFrontier
2h 17mDEN-ONT
$41
6/8Sat
1 stopAmerican Airlines
7h 20mORD-ONT
$99
6/30Sun
nonstopDelta
2h 45mSEA-ONT
$99
6/22Sat
nonstopUnited Airlines
1h 32mSFO-ONT
$99
8/20Tue
1 stopAmerican Airlines
6h 08mSFO-ONT
$100
7/2Tue
1 stopDelta
7h 26mDFW-ONT
$108
7/28Sun
nonstopAlaska Airlines
2h 33mSEA-ONT
$109
7/10Wed
1 stopUnited Airlines
7h 10mSEA-ONT
$111
8/27Tue
1 stopAlaska Airlines
8h 17mDEN-ONT
$124

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Last minute flights from North America to Ontario

Last minute flight, train and bus deals

6/2Sun
nonstopFrontier
1h 24mSFO-ONT
6/4Tue
nonstopFrontier
1h 28mONT-SFO
$70
6/1Sat
nonstopFrontier
1h 24mSFO-ONT
6/3Mon
nonstopFrontier
1h 28mONT-SFO
$90
5/29Wed
multi-stopAmerican Airlines
6h 14mSFO-ONT
6/5Wed
multi-stopAmerican Airlines
6h 29mONT-SFO
$255
5/29Wed
multi-stopAmerican Airlines
8h 44mORD-ONT
6/4Tue
multi-stopAmerican Airlines
6h 04mONT-ORD
$278
5/29Wed
multi-stopDelta
9h 53mORD-ONT
6/4Tue
multi-stopDelta
10h 44mONT-ORD
$284
6/1Sat
nonstopUnited Airlines
1h 35mSFO-ONT
6/3Mon
nonstopUnited Airlines
1h 25mONT-SFO
$324
5/29Wed
multi-stopDelta
6h 13mORD-ONT
5/30Thu
multi-stopDelta
11h 57mONT-ORD
$327
5/29Wed
multi-stopUnited Airlines
12h 23mLGA-ONT
6/4Tue
multi-stopUnited Airlines
7h 01mONT-LGA
$346
5/29Wed
multi-stopAlaska Airlines
4h 00mSEA-ONT
6/4Tue
nonstopAlaska Airlines
2h 45mONT-SEA
$476
5/30Thu
multi-stopAlaska Airlines
11h 01mJFK-ONT
6/5Wed
multi-stopAlaska Airlines
8h 50mONT-JFK
$541

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Flights to Ontario

Destination:

Ontario (ONT)United States

Return flight deals:

Ontario - North America

Cabin classes:

$443
$478
$193
$35