$33 Find Cheap Flights from Ontario to North America

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Ontario to North America departing on 3/11. 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.
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Best North America Flight Deals from Ontario

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours

New York
New York1 stop$121
Los Angeles
Los Angeles2 stops$343
Las Vegas
Las Vegasnonstop$37
Miami
Miami1 stop$130
Chicago
Chicago1 stop$99
San Francisco
San Franciscononstop$38
Boston
Boston1 stop$271
Denver
Denvernonstop$37
Seattle
Seattlenonstop$76
Fort Lauderdale
Fort Lauderdale2 stops$325
Atlanta
Atlanta1 stop$130
Dallas
Dallasnonstop$49
Tampa
Tampa1 stop$130
Cancún
Cancún1 stop$258
Houston
Houstonnonstop$58
Honolulu
Honolulu1 stop$251
San Diego
San Diego1 stop$298

Good to know

Low season

February

High season

July

Cheapest flight

$33
Best time to beat the crowds but there is an average 4% increase in price.
Most popular time to fly with an average 9% increase in price.
Flight from Ontario to Dallas/Fort Worth Airport

Flights from Ontario to North America: the best tips from KAYAK users

Insights shared by verified travelers who flew the route from Ontario to North America 
Verified travelerFlew with FrontierONT-LASDec 2024
Pack light and arrive earlier.. Also download the App and check your flight and check in..
Verified travelerFlew with FrontierONT-PDXOct 2024
ONT by far the best airport in SoCal.
Verified travelerFlew with Alaska AirlinesONT-PDXOct 2024
Portland is a big airport, give yourself time.
LeoFlew with American AirlinesONT-CLTSep 2024
Have plenty of patience for the casual travelers! They are oblivious of rules and etiquettes that slows down the process for everyone. Case in point, a guy held up the line trying to place both his personal item (should be UNDER the seat in front of you) and his carry on case horizontally. Obviously not aware of the big poster right in front of his displaying the proper way of placing his case on it's side. Slowed the whole line of people behind him. Also be mindful the agents in Ontario airport (or any smaller airports) might not be the most knowledgeable on the rules and regulations of air travel, luggage specification allowances etc. Stay patient!! Also the seats do not recline that well anymore on AA flights. So if you have back problems, be sure to bring some back supports.
PolarFlew with Alaska AirlinesONT-PDXAug 2024
Bring a jacket! It is much cooler in the Pacific Northwest than southern California!
Verified travelerFlew with Hawaiian AirlinesONT-HNLJul 2024
TSA was super fast. Easy airport to navigate.
ShonelleFlew with FrontierONT-DENAug 2024
Don't choose Frontiet Airlines as your flight provider.
WILLIAMFlew with American AirlinesONT-DFWMar 2024
Check in counter is small, limited staffs for early flights. Also, limited Kiosk stations as well.
MariFlew with American AirlinesONT-CLTJan 2024
Bring a blanket it's very cold on plane

FAQs - booking North America flights

  • How long is the flight to North America from Ontario?

    Flights to Sacramento1h 24m
    Flights to Charlotte4h 49m
    Flights to Guadalajara3h 08m
    Flights to Las Vegas1h 09m
    Flights to Portland2h 22m
  • What is the cheapest flight to North America from Ontario?

    The cheapest ticket to North America from Ontario found in the last 72 hours was $33 one-way, and $38 round-trip. The most popular route is from Ontario to Las Vegas, and the cheapest round-trip airline ticket found on this route in the last 72 hours was $26.

  • Which airlines fly to North America?

    Southwest flies most frequently to Las Vegas from Ontario. In general, Frontier, Hawaiian Airlines and Alaska Airlines fly the most to North America.

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

    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 Ontario to North America.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Ontario to 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 Ontario to North America?

    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 from Ontario to North America with an airline and back with another airline.

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

    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 from Ontario to North America up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top tips for finding cheap flights to North America

  • Looking for a cheap flight? 25% of our users found tickets from Ontario to the following destinations at these prices or less: Denver $84 one-way - $117 round-trip; Dallas $166 one-way - $310 round-trip; Las Vegas $51 one-way - $72 round-trip
  • Book at least 1 week before departure in order to get a below-average price.
  • High season is considered to be January, February and December. The cheapest month to fly from Ontario is April.
  • Morning departure is around 5% cheaper than an evening flight, on average*.
See more tips
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

Top 5 airlines serving from Ontario to North America

Need help choosing which airline to fly with from Ontario to North America? 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 9694 reviews
7.1Entertainment
7.9Comfort
7.1Food
8.5Crew
8.2Boarding
Airline reviews

The flight was delayed over two and a half hours thus causing me to miss my best friend’s funeral. All because the flight crew had to get more rest. That was the reason stated. I understand however very unfortunate. Glad everyone is well rested and resting in peace.

2.0 MediocreAnonymous, Feb 2025SFO - BUR
Read more Alaska Airlines reviews

The flight was delayed over two and a half hours thus causing me to miss my best friend’s funeral. All because the flight crew had to get more rest. That was the reason stated. I understand however very unfortunate. Glad everyone is well rested and resting in peace.

Flight was late to board, then overweight. I booked a non stop flight for a reason, ended up having to re-fuel in Texas, arrived three hours late.

Quick boarding, efficient and pleasant crew. Wish they worked the mic better in the terminal to be understood more clearly.

The groups call was not clear or loud enough so a bit of confusion there. The plan sat on the axis way for over 35 minutes ( no fault of the pilot or the crew) but nevertheless a bit tiring. The crew were friendly and greeted us with smiles. Thank you for all that you do and put up with.

Our flight experience started at the check in kiosk. Jennifer  Polete smf 498304 greeted us and assisted us with our tags and check in guidance. She was so pleasant, helpful and friendly. This was the start of my experience with American Airlines and it made such a wonderful impression. The staff on the airplane were also kind, courteous, and attentive. I would definitely fly American Airlines again

All good except both the outbound and return flights were delayed about 1 1/2 hrs.

Not great. My flight was canceled due to a mechanical problem and I could not get rebooked for the same day. I needed to get to my destination yesterday, not today. I was able to book with another airline but it was a layover and ultimately a 1 hour flight took me 12 hours. Normally I like Alaska much more than Southwest, but Southwest came through with a not terrible price for same day.

The flight was canceled so i booked another flight with Delta, so essentially there was absolutely nothing that i enjoyed about my experience with this flight

racist and disturbing flight attendants who profile, attack, and demean. i was on flight 1045 on january 31st 2025.

The plane was late arriving. The Alaska people did a great job of turning it around quickly and getting us off. We took off about 35 minutes after it reached the gate.

It was terrible, if they ran flights on time it would make a big difference.

Delta seems to be improving in many areas, except they are super bad with the food available. Bring back normal food service on long flights.

I actually received a notification from kayak on email but not one by text from Delta when my departure gait changed and I almost missed my flight

New boarding doesn't make sense. Filling front first is slow.

Delta flight was great from the check in all the way to arrival. However, I had a very bad experience. I requested a wheelchair and the wheelchair employee that went to pick me up from the plane in Boston to bring me to the baggage claims told me I have to pay him. I was under the impression that it was a free service and I usually give tips but the person forced me to pay and since I said no because I was upset with his demand when my daughter walked in to pick me up he demanded payment from my daughter who paid him thinking maybe now it is a charged service.

Horrible. Grateful to be alive but spent 13 hours at airport only to return back to my familys house and flight changed to next day. They tried to fix a part on plane, had no back up plane and after 10 hours , reattempted the flight and it STILL wasn't fixed. We got a meal voucher and rescheduled flight but there should be some other compensation for the 15 hours spent in airport

My seat was changed at the last minute and I was moved to the last row, right next to the bathroom despite selecting my seat well in advance. I was also made to check my carry on due to space but when I got on the plane there was significant empty overhead space. Picking up my carry on from the luggage carousel added time to my trip which had already been extended due to delay.

There was plenty of overhead room but half of the passengers were told they had to check their carryon bags. My partner and I checked in as early as possible and our seats were split across the aisle.

Flew first class so everything was great. But maybe because the flights were red eye, no meals were served, just chips. I flew Alaska Air 1st class at 9PM (2 hour flight) and they served beef short rib sliders!

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

Plenty of room for me and the cat in Premium Economy. Seat was comfortable. Boarding was a breeze. The lady at the special check-in desk was great, super helpful and professional.

Smooth flight. As always dinner could have been more generous. Breakfast was great.

AWFUL. I have had the experience of traveling with many airlines across the world, and hands down United Airlines is the worst. Not one flight was on time, and I don’t think I met one crew member or staff member who wasn’t rude.

Old and out of date plane, it seem like every time I fly with united there’s and issue. We were delayed,

We took off an hour late due to arrival airport not having enough gates. That was followed by 1:30 wait to get our bags delivered for the entire flight.

For an 8.5 hour flight the service on board lacked a bit. Service start was slow, the food was worse than usual and they skipped the snack they were supposed to deliver before landing.

Wish movie and music choices changed more often. Mostly same from a month or two ago when I last flew.

It was good. Just that the seats could not be reclined. The people behind were not ready to let the chairs be reclined

Checkin was painful and slow! Lady didn’t seem to know what was going on and couldn’t explain the delay. Seemed ahe couldnt see the computer scree and we couldn’t hear her talk through her mask.

Plane left & arrived early- 5 Crew great. Wi fi - paid for 2, only 1 worked - so so. Waste of $. Coolie was good

Amazingly comfy flight - I had upgraded for a reasonable price and it was worth it. The food also was good.

Had to wait on pilot and crew to depart and had to wait to arrive at the gate because they only had 2 crews working. Delays, delays....Planes just keep getting smaller and tighter and they nickle and dime for everything. When will an airline actually wake up and make flying more enjoyable?

I paid for what I got which was cheap, I brought my own entertainment. I knew what to expect, so I could be prepared. If you’re flying economy, check in early like me. I have no problems with my flight, was on time, staff were friendly, and overall good experience.

DO NOT BOOK THROUGH AMERICAN AIRLINES IF YOU HAVE ANY ADDITIONAL NEEDS. Great flight, crew etc. it wasn’t full so had space to stretch out Only downside was there was no GF option for my partner. We booked through American and it was a Qantas flight so despite contacting both airlines to confirm, she didn’t have a gluten free meal for the 16 hour flight (nor the flight in the other direction). The flight attendants did their best to accommodate but it was not super substantial.

After several delays and being rebooked onto a layer flight, I had to speak to three AA agents for baggage claim to get an attendant. All were in foul mode and reluctant to assist or offer any assistance.

Multiple maintenance delays and the missed and rebooked connection changed gates at least 6 times including one which had us walking 20 minutes to another terminal and then back again. Seated our family of three in different middle seats throughout the plane and then there was an empty seat next to me. Very long travel day which I would have never agreed to if I knew the itinerary would be changed at 5 am, 2 hours before takeoff.

It was as expected for such a short flight. No complaints

It was nice being on a flight that had working wifi. The boarding was quick - why don’t all airlines have small boarding groups window to aisle? Makes so much sense!!! I was disappointed to be the first person stopped to have to gate check my carryon. Especially when there was plenty of overhead space at the back! But I get it…keeps it moving. Crew was nice.

The flight encountered a delay exceeding 4 hours. The food voucher issued was valued at $12, insufficient to cover our meal expenses. Consequently, I was unable to take my medication, leading to a drop in blood sugar levels and exacerbating my anxiety.

Crazy seating issues. We got seated far apart. Offered middle seats at a premium rate. Why is a middle seat now the expensive seat? Baffling.

Check in at Philadelphia international was absolutely terrible! I fly 2 to 3 times a month and avoid frontier at all cost and will never fly Frontier again! The night before travel, I tried checking in however, the app was giving me an error, so I went to the desktop, which instructed you that you need to use the app. The next day I presented at the check-in gate after trying at least a half dozen times prior to getting into the airport and continuing to getting the error in the app. I actually had rebooted my phone numerous times and reinstall the app just in case. My phone is only one generation older than the current model. It has no problems completing a frontier flight purchase or any other app issues. There was only three frontier employees working at check-in and a huge line while I was in line I continued to try and check in via the app. As I approach the desk, I was dreading dealing with the agent. He was extremely unprofessional, anti-semantic & very ignorant, and mean to the people in front of me, as well as the people who ended up being behind me. He literally told people “Man I don’t care bout y’all” in his native dialect! Maintaining my composure I approached and explained the situation. To which he replied, you’re gonna have to pay then! I don’t understand. It’s an issue with their app not allowing me to check in! Not my issue! He told me if I pay cash it would be $15, $25 if I pay credit card. I don’t understand a $10 difference for paying with a credit card? I am completely cashless so I continued to try using the app to avoid the $25 fee, Which I still don’t believe that I should be responsible for since it was Frontier’s technical issue!!! I continued to check in via the app a couple more times after he verified I was doing everything right he proceeded to continue to belittle the people behind me. Yelling at them saying I don’t care about you people! I cannot believe that this is the way that businesses would treat its customers! Unfortunately, the black mail with dreadlocks did not have a name tag all he had was a frontier sweater on! For the $25 fee that I ended up getting charged on my credit card. I should’ve just booked originally with Spirit or any other carrier! I have no problem paying fees that I should be responsible for, but when it’s due to a technical failure of a company, the customer should not be responsible for it! I cannot believe that it’s not frontier going out of business!

they delayed my flight which ended up, causing my layover flight to leave without me, resulting in me missing a flight and having to stay overnight in Houston international. I got no compensation other than a flight to my original location only a day later. i’ve never experienced such a unprofessional situation

The flight left over two hours late. They charged me $180 to bring a carry on. There was an error with the spelling of my name and Frontair agent lied that I would need to pay $200 for her to fix the spelling, and pressured me that if I don't do it quick I would lose the flight. I called back and another agent said it costs $75 to fix. All in all, this company is a complete scam.

I loked walking out on the tarmac to board and no first class. I didn't like that they have no snacks or onboard wifi to bide your time.

It was a redeye flight, so every passenger just wanted to sleep, but through the entire flight, the flight crew made announcements over the loudspeaker at maximum volume every few minutes making sleep impossible. For example: it’s 2am, and the crew decides to give an extremely detailed announcement about snacks and beverages for sale. And 3am is the perfect time to wake up everyone with a lengthy announcement about how to get a coffee refill and how to take advantage of new offer from frontier for a credit card.

The takeoff was the smoothest I've ever experienced on any airline and this is the first time I've flown on frontier so this was an extremely pleasant surprise!

A lady asked to stop the flight after the tunnel pulled away and we began to depart a flight that was already hours late. The attendance respectfully stopped the the plane and had the tunnel return. After the tunnel returned the passenger claimed to have changed her mind . The tunnel was then put in reverse and the passenger remained on the plane .. They should have sent the sick passenger off the plane like initially replaced. They existed a couple off the plane prior to that situation.. So.. all and all.. it was a long and flight.. .

With frontier you get what you pay for. The flight was two hours late. It’s a tight fit for the number of people they bring but you get to where you’re going cheap. Sometimes that’s more important than a nifty drink and cool TV..

Charges unexpected. For seat that didnt recline. Please reverse extra seat and carryon charge. Bad business that is a bait and switch.

We had an awful experience getting our bags checked in. Frontier’s check in on the app manipulated us into buying the business package because that was the only option available for a checked bag which included two checked bags per person which we did not need. Upon arriving to the airport, we stood in line for what seemed like forever at the baggage check in and there was no one available at the counter. We were first in line and we were afraid we were going to miss our flight due to the baggage attendant being late. After realizing there were a lot of other people waiting at the baggage check in and no one available. I reached out to Frontier and could not get any customer service so I had to call the airport to page the baggage attendant to send someone to the counter to check in our bags before we were able to go through security , I finally spoke to the attendant at the counter and explained to her that we had to pay for two checked bags person a total of six bags when we only had a total of three bags between three people she said to reach out to Frontier and they would issue a refund for the three bags that we paid for and did not need. I reached out to Frontier which I was not able to reach anybody by phone so I had to go through their automated chat feature, which sent me around in circles until I finally reached a representative to assist me. I explained to them what happened and they explained that they were not able to assist me. I continued to push the issue with them as this was very frustrating and they finally put in a customer service ticket where we were issued a flight credit and we were so disappointed because after this experience, we NEVER want to fly Frontier again, and we do not want a credit that we will not use. Frontier charged us almost $500 for us to check three bags which is absolutely absurd! The customer service agents were not able to offer anything else other than a flight credit and I do not feel like my frustrations were truly heard , we will never use Frontier Airlines again ! Truly Theft by Manipulation! They should be ashamed!

Book cheap flights from Ontario to North America

Recent round-trip flight deals

3/3Mon
nonstopFrontier
1h 13mONT-LAS
3/5Wed
nonstopFrontier
1h 09mLAS-ONT
$40
4/8Tue
nonstopFrontier
1h 10mONT-LAS
4/9Wed
nonstopFrontier
1h 04mLAS-ONT
$41
3/13Thu
nonstopUnited Airlines
1h 29mONT-SFO
3/15Sat
nonstopUnited Airlines
1h 30mSFO-ONT
$57
3/23Sun
nonstopUnited Airlines
1h 29mONT-SFO
3/28Fri
nonstopUnited Airlines
1h 30mSFO-ONT
$108
3/14Fri
nonstopAlaska Airlines
2h 47mONT-SEA
3/18Tue
nonstopAlaska Airlines
2h 32mSEA-ONT
$187
3/6Thu
nonstopDelta
2h 55mONT-SEA
3/9Sun
nonstopDelta
2h 42mSEA-ONT
$198
3/14Fri
1 stopAlaska Airlines
5h 16mONT-SEA
3/14Fri
nonstopAlaska Airlines
2h 30mSEA-ONT
$201
5/6Tue
nonstopDelta
2h 55mONT-SEA
5/24Sat
nonstopDelta
2h 45mSEA-ONT
$208
5/14Wed
1 stopAmerican Airlines
7h 48mONT-ORD
5/17Sat
1 stopAmerican Airlines
7h 52mORD-ONT
$247
3/5Wed
1 stopAmerican Airlines
6h 30mONT-EWR
3/12Wed
1 stopAmerican Airlines
8h 38mEWR-ONT
$257

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Recent one-way flight deals

3/11Tue
nonstopFrontier
2h 56mONT-DFW
$33
2/21Fri
nonstopFrontier
1h 14mONT-LAS
$33
2/25Tue
nonstopUnited Airlines
1h 44mONT-SFO
$59
2/19Wed
nonstopUnited Airlines
1h 29mONT-SFO
$69
4/15Tue
nonstopDelta
2h 55mONT-SEA
$89
5/20Tue
nonstopAmerican Airlines
2h 57mONT-DFW
$90
3/15Sat
1 stopAmerican Airlines
6h 10mONT-SFO
$90
3/12Wed
1 stopAlaska Airlines
4h 16mONT-SEA
$98
3/15Sat
nonstopDelta
2h 57mONT-SEA
$99
3/14Fri
1 stopAlaska Airlines
4h 27mONT-SEA
$108

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Last minute flights from Ontario to North America

Last minute flight, train and bus deals

2/13Thu
nonstopFrontier
1h 36mONT-SFO
2/23Sun
nonstopFrontier
1h 28mSFO-ONT
$99
2/13Thu
nonstopFrontier
1h 13mONT-LAS
2/14Fri
nonstopFrontier
1h 06mLAS-ONT
$100
2/16Sun
nonstopUnited Airlines
1h 29mONT-SFO
2/22Sat
nonstopUnited Airlines
1h 30mSFO-ONT
$157
2/14Fri
nonstopUnited Airlines
1h 29mONT-SFO
2/25Tue
nonstopUnited Airlines
1h 30mSFO-ONT
$177
2/14Fri
multi-stopAmerican Airlines
6h 31mONT-SFO
2/19Wed
multi-stopAmerican Airlines
5h 55mSFO-ONT
$199
2/13Thu
multi-stopAmerican Airlines
6h 03mONT-SFO
2/20Thu
multi-stopAmerican Airlines
5h 59mSFO-ONT
$218
2/14Fri
nonstopDelta
2h 55mONT-SEA
3/5Wed
nonstopDelta
2h 47mSEA-ONT
$312
2/15Sat
multi-stopDelta
6h 25mONT-SEA
3/5Wed
nonstopDelta
2h 45mSEA-ONT
$322
2/17Mon
multi-stopAlaska Airlines
4h 27mONT-SEA
3/4Tue
nonstopAlaska Airlines
2h 37mSEA-ONT
$347
2/17Mon
multi-stopAlaska Airlines
4h 27mONT-SEA
2/20Thu
nonstopAlaska Airlines
2h 35mSEA-ONT
$370

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Everything you need to know for your flight to North America

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