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$39 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 5/29. 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
lun. 5/27
lun. 6/3

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In the last 7 days travelers have searched 43,623,357 times on KAYAK, and here is why:

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Good to know

Low season

January

High season

December

Cheapest flight

$39
Best time to beat the crowds with an average 23% drop in price.
Most popular time to fly with an average 23% increase in price.
Flight from Seattle 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, +22 more

Aeromexico, Air Canada, +23 more

Tuesday

Aeromexico, Air Canada, Air France, +23 more

Aeromexico, Air Canada, +24 more

Wednesday

Aeromexico, Air Canada, Air France, +22 more

Aeromexico, Air Canada, +23 more

Thursday

Aeromexico, Air Canada, Air France, +23 more

Aeromexico, Air Canada, +24 more

Friday

Aeromexico, Air Canada, Air France, +21 more

Aeromexico, Air Canada, +22 more

Saturday

Aeromexico, Air Canada, Air France, +22 more

Aeromexico, Air Canada, +23 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, +22 more

Aeromexico, Air Canada, +23 more

Tuesday

Aeromexico, Air Canada, Air France, +23 more

Aeromexico, Air Canada, +24 more

Wednesday

Aeromexico, Air Canada, Air France, +22 more

Aeromexico, Air Canada, +23 more

Thursday

Aeromexico, Air Canada, Air France, +23 more

Aeromexico, Air Canada, +24 more

Friday

Aeromexico, Air Canada, Air France, +21 more

Aeromexico, Air Canada, +22 more

Saturday

Aeromexico, Air Canada, Air France, +22 more

Aeromexico, Air Canada, +23 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 9117 reviews
7.9comfort
7.3entertainment
8.2boarding
8.6crew
7.3food
Airline reviews

Pleasant flight, now wifi, but did get pushed to the exit row gracefully cause I am a tall man. Was a pleasant thank you.

8.0 ExcellentCountry, Apr 2024PAE - LAX
Read more about Alaska Airlines reviews

Pleasant flight, now wifi, but did get pushed to the exit row gracefully cause I am a tall man. Was a pleasant thank you.

Long flights are best when the seats have movies and shows to watch.

Good - San Jose security is a breeze. Exact opposite of San Diego. Flight on time. Bad - FA's were not that cheery or polite. I thought we may blow out a tire as the pilot slammed down a hard landing in perfect conditions. He came in pretty hot like he had a date waiting.

I was seated at the back of the plane and the flight attendants were fantastic. I did not get food so can’t say. Thought the movie selection was lean.

Bad. Flight was delayed over 2 hours and the plane was sitting on the tarmac the entire time. We received no explanation for why the flight was delayed.

It was so easy to board using my boarding pass on my iPhone, and I liked what I was given on the plane for food and drink, and everyone was very friendly.

The messaging about the change in flight destination and options for getting to SFO was poor. There should have been frequent updates. When I spoke to the boarding agent moment before we were supposed to board, he was flippant and offered no help before the announcement was made that transportation would be arranged. It was as poor of an experience that I've ever had.

My plane ride down landed 20 min late. Boarding at SFO was strange too. The people at the terminal were nice—but, boarding lacked direction, and was confusing . Coming back was worse—the plane was hours behind—and I barely caught the last Bart train back to San Francisco (3 min more and I would have been in trouble). It was a very stressful trip, and it didn’t need to be.

The absolute coldest flight I’ve ever been on, even with a sweater and zip up sweatshirt. Was miserable the entire flight.

the departure got delayed due to SJC situation, but it was a quite good waiting thanks to Alaska airline teams.

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.

Flight diverted in SD. Later take off in Seattle by 1.3hrs

Space and comfort was good. Staff could have been more helpful and friendly.

Crew was not friendly when I went to request a seat change.

The WiFi didn’t work and the seats are too close together. Very uncomfortable.

So so. Terrible aircraft choice for that leg of the flight.

Our seat tv didn’t work All the rest was perfect

delay several times and wait extra long to board. no entertainment service because there are problem for some rows. always encounter some delays for the last flight of the day.

On time every leg of the journey and exceptional staff at counter, gate, and on board. I haven’t travelled in US for a long time and was genuinely surprised how pleasant this was.

Meals were adequate but could be better. Lots of movies, podcasts, tv shows. We really enjoyed using our personal headsets highly recommended. 15 hrs flight great to travel at night.

This was a Lufthansa flight. Disappointing main meal. Very rough over Canada and arrival at FRA. IFE was almost unusable.

Too many fees (but that seems to apply to all airlines nowadays)

the plane was old. the wifi didn’t work. the entertainment was boring and dated. the charging ports were impossible to find. i was mostly ignored by flight attendants that had no problem speaking to the man beside me. i got two drinks the entire time i was on the plane.

Quit making seats narrower and narrower. The guy beside me spilled over in to my seat.

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.

We experience delays on departure and connecting flights resulting in 14 hour to our next departure. We were accommodated with a night's stay but was only provided a 12 dollar meals accommodation. The airlines rules state.at least 50 dollars. In any case, it can not make up for the whole day missed on our vacation in Sydney Australia.

I can say I will not be taking this airline again any time soon. Seat were uncomfortable and too tight. Lack of chair screen and little overhead space.

American Airlines canceled the flight twice and was unable to facilitate a change of city for us after our travel plans became affected. We lost alot of money due to this and it seems like the airline was trying their best not to facilitate this. Mind you, I am a very loyal member.

I purchased a carry on bag online…was supposed to cost $72 but after a whole slew of bs charges, the total was over $175.00. Because of these hidden charges, I will not even consider flying Frontier ever again. It’s just not worth the hassle. I’m scratching this company off my list forever.

Flight was OK. Seats were good no cell phone charges on the plane no TVs or entertainment.

There were 3 leg for the trip and each leg was delayed by 90 minutes or more. The boarding process takes forever with people waiting on the jetway even though most folks do not have carry-on. The whole process is poorly managed.

Flight cancelled and was told by a rude gate agent that they don’t accommodate on other airlines. Had to wait 5 hours for a connecting flight that had a 7 hour layover. Would not allow bags to be checked early so we couldn’t go through security .Had to rent a car for the afternoon to store bags and get a meal. Also incurred a hotel fee. No apology or reason given for the cancellation- just rudeness.

They cancelled the flight then did nothing to help us rebook. It was awful - I won’t fly with them again

The process of buying the ticket and navigating all the hidden charges that Frontier throws at you was a terrible experience. The actual airport experience and flying was fine.

The truck that was refueling the plane drove away with the hose still connected to the plane and ripped part of the plane off with it

Not have to pay for every single item to take a flight. Seating and delays sucked.

Flight was cancelled and I had to spend the night in the airport lugging my suitcase around

If you don’t check in 24 hours in advance, they will charge you $110 to check your bag instead of the $30. I did not get an email with this information and did not check in. In addition, my flight home was cancelled at layover and I had to spend the night in the airport, and then have another layover at another airport before making it home. Will not fly frontier again.

Book cheap flights from North America to Ontario

Recent round-trip flight deals

5/7mar.
nonstopFrontier
1h 29mSFO-ONT
5/15mié.
nonstopFrontier
1h 27mONT-SFO
$48
5/15mié.
nonstopFrontier
1h 47mSLC-ONT
5/22mié.
nonstopFrontier
1h 44mONT-SLC
$48
5/14mar.
nonstopDelta
1h 48mSLC-ONT
5/22mié.
nonstopDelta
1h 48mONT-SLC
$139
6/1sáb.
nonstopUnited Airlines
1h 32mSFO-ONT
6/3lun.
nonstopUnited Airlines
1h 25mONT-SFO
$179
6/5mié.
1 stopDelta
4h 31mPDX-ONT
6/11mar.
1 stopDelta
6h 52mONT-PDX
$196
7/9mar.
nonstopAlaska Airlines
2h 35mSEA-ONT
7/13sáb.
nonstopAlaska Airlines
2h 35mONT-SEA
$197
5/18sáb.
nonstopUnited Airlines
1h 34mSFO-ONT
5/20lun.
nonstopUnited Airlines
1h 28mONT-SFO
$215
5/11sáb.
nonstopAlaska Airlines
2h 33mSEA-ONT
5/18sáb.
nonstopAlaska Airlines
2h 41mONT-SEA
$237
5/23jue.
1 stopAmerican Airlines
4h 00mSLC-ONT
5/26dom.
1 stopAmerican Airlines
4h 40mONT-SLC
$242
8/31sáb.
1 stopAmerican Airlines
7h 45mJFK-ONT
9/7sáb.
1 stopAmerican Airlines
7h 38mONT-JFK
$255

Search by stops

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Recent one-way flight deals

5/29mié.
nonstopFrontier
2h 44mSEA-ONT
$39
5/7mar.
nonstopFrontier
3h 22mDFW-ONT
$39
5/28mar.
1 stopUnited Airlines
6h 15mSEA-ONT
$88
5/18sáb.
1 stopAmerican Airlines
6h 47mSEA-ONT
$98
5/29mié.
1 stopDelta
6h 33mDEN-ONT
$98
5/29mié.
1 stopAlaska Airlines
7h 08mPDX-ONT
$98
5/29mié.
1 stopAmerican Airlines
4h 45mSEA-ONT
$104
6/2dom.
nonstopAlaska Airlines
2h 33mSEA-ONT
$108
5/15mié.
2 stopsDelta
10h 06mDFW-ONT
$113
7/27sáb.
nonstopUnited Airlines
2h 18mDEN-ONT
$120

Search by stops

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Last minute flights from North America to Ontario

Last minute flight, train and bus deals

5/2jue.
nonstopFrontier
1h 29mSFO-ONT
5/4sáb.
nonstopFrontier
1h 28mONT-SFO
$89
5/1mié.
nonstopFrontier
1h 29mSFO-ONT
5/15mié.
nonstopFrontier
1h 27mONT-SFO
$90
5/2jue.
nonstopDelta
1h 49mSLC-ONT
5/4sáb.
nonstopDelta
1h 44mONT-SLC
$264
5/2jue.
multi-stopAmerican Airlines
8h 52mJFK-ONT
5/4sáb.
multi-stopAmerican Airlines
7h 50mONT-JFK
$274
5/2jue.
multi-stopAmerican Airlines
10h 17mLGA-ONT
5/6lun.
multi-stopAmerican Airlines
8h 35mONT-LGA
$274
5/1mié.
multi-stopDelta
8h 32mJFK-ONT
5/4sáb.
multi-stopDelta
10h 46mONT-JFK
$276
5/2jue.
multi-stopAlaska Airlines
12h 34mJFK-ONT
5/13lun.
multi-stopAlaska Airlines
9h 00mONT-JFK
$367
5/2jue.
multi-stopAlaska Airlines
10h 19mJFK-ONT
5/8mié.
multi-stopAlaska Airlines
11h 59mONT-JFK
$370
4/28dom.
multi-stopUnited Airlines
7h 09mPDX-ONT
4/29lun.
multi-stopUnited Airlines
4h 02mONT-PDX
$371
5/1mié.
multi-stopUnited Airlines
9h 14mLGA-ONT
5/7mar.
multi-stopUnited Airlines
6h 54mONT-LGA
$376

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Flights to Ontario

Destination:

Ontario (ONT)United States

Return flight deals:

Ontario - North America

Cabin classes:

$343
$478
$193
$29