$29 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 12/9. 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
1 adult, Economy, 0 bags

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Cheap Flights from Ontario to North America

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
New York
Newark1 stop$186
Los Angeles
Los Angeles1 stop$124
Las Vegas
Las Vegasnonstop$53
Miami
Miami1 stop$130
Chicago
Chicago2 stops$162
San Francisco
San Franciscononstop$74
Boston
Boston1 stop$297
Washington, D.C.
Baltimore2 stops$184
Denver
Denvernonstop$90
Seattle
Seattle1 stop$130
Fort Lauderdale
Fort Lauderdale1 stop$197
Atlanta
Atlanta1 stop$157
Dallas
Dallasnonstop$133
Tampa
Tampa1 stop$130
Cancún
Cancún1 stop$325
Houston
Houstonnonstop$110
Honolulu
Honolulu1 stop$392
San Diego
San Diego1 stop$154
New York
Newark1 stop$186
Los Angeles
Los Angeles1 stop$124
Las Vegas
Las Vegasnonstop$53
Miami
Miami1 stop$130
Chicago
Chicago2 stops$162
San Francisco
San Franciscononstop$74
Boston
Boston1 stop$297
Washington, D.C.
Baltimore2 stops$184
Denver
Denvernonstop$90
Seattle
Seattle1 stop$130
Fort Lauderdale
Fort Lauderdale1 stop$197
Atlanta
Atlanta1 stop$157
Dallas
Dallasnonstop$133
Tampa
Tampa1 stop$130
Cancún
Cancún1 stop$325
Houston
Houstonnonstop$110
Honolulu
Honolulu1 stop$392
San Diego
San Diego1 stop$154

Book Cheap Ontario to North America Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Ontario to North America that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Ontario to North America

Sat, Nov 15 - Sat, Nov 15
Frontier Logo
8:00 am - 9:12 amONT-LAS
1h 12mnonstop
Frontier Logo
11:27 am - 12:37 pmLAS-ONT
1h 10mnonstop
$53Frontier
Find Deal
Wed, Dec 3 - Mon, Dec 8
Frontier Logo
6:15 am - 7:22 amONT-LAS
1h 07mnonstop
Frontier Logo
8:13 pm - 9:17 pmLAS-ONT
1h 04mnonstop
$57Frontier
Find Deal
Mon, Nov 10 - Fri, Nov 14
United Airlines Logo
6:38 pm - 8:02 pmONT-SFO
1h 24mnonstop
United Airlines Logo
9:30 pm - 10:51 pmSFO-ONT
1h 21mnonstop
$117United Airlines
Find Deal
Tue, Nov 11 - Tue, Nov 11
United Airlines Logo
6:38 pm - 8:02 pmONT-SFO
1h 24mnonstop
United Airlines Logo
9:30 pm - 10:51 pmSFO-ONT
1h 21mnonstop
$123United Airlines
Find Deal
Fri, Dec 12 - Mon, Dec 15
Southwest Logo
4:40 pm - 11:00 pmONT-HOU
4h 20m1 stop
Southwest Logo
6:20 am - 9:15 amHOU-ONT
4h 55m1 stop
$148Southwest
Find Deal
Thu, Dec 4 - Sun, Dec 7
American Airlines Logo
11:59 pm - 4:59 amONT-DFW
3h 00mnonstop
American Airlines Logo
8:31 am - 9:54 amDFW-ONT
3h 23mnonstop
$179American Airlines
Find Deal
Thu, Dec 4 - Tue, Dec 9
American Airlines Logo
11:59 pm - 8:32 amONT-HOU
6h 33m1 stop
American Airlines Logo
5:44 am - 9:54 amHOU-ONT
6h 10m1 stop
$187American Airlines
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Thu, Dec 11 - Tue, Dec 16
Delta Logo
6:40 am - 9:45 amONT-SEA
3h 05mnonstop
Delta Logo
8:30 am - 11:13 amSEA-ONT
2h 43mnonstop
$187Delta
Find Deal
Sat, Dec 6 - Sun, Dec 7
Delta Logo
6:40 am - 9:45 amONT-SEA
3h 05mnonstop
Delta Logo
8:30 am - 11:13 amSEA-ONT
2h 43mnonstop
$188Delta
Find Deal
Thu, Dec 11 - Sat, Dec 13
Southwest Logo
12:35 pm - 10:05 pmONT-HOU
7h 30m1 stop
Southwest Logo
5:10 am - 11:30 amHOU-ONT
8h 20m1 stop
$215Southwest
Find Deal
Booking Insights

KAYAK's insights & trends for Ontario to North America flights

Get data-powered insights and trends into flights from Ontario to North America to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest Ontario to North America flight route?

Data is based on round-trip flight searches on KAYAK over the past month.

The cheapest ticket to North America from Ontario found in the last 72 hours was to Las Vegas, at $52 round-trip. The most popular route is from Ontario (ONT) to Las Vegas (LAS), and the cheapest round-trip airline ticket found on this route in the last 72 hours was $52.

Can I save money by flying with a layover from Ontario to North America?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

No, with an average price for the route of $294, prices are generally cheapest when you fly direct.

What is the cheapest month to fly from Ontario to North America?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Ontario to North America, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Ontario to North America is January, when tickets cost $267 (return) on average. On the other hand, the most expensive months are December and April, when the average cost of round-trip tickets is $451 and $366 respectively.

What’s the cheapest day of the week to fly from Ontario to North America?

The average price of all round-trip flights from Ontario to North America clicked on KAYAK for each day over the last 12 months.

Your flight ticket price will generally be cheaper if you fly to North America on a Saturday and more expensive on a Thursday. On your return trip to Ontario, you should consider flying back on a Friday, and avoid Mondays for better deals.

How far in advance should I book a flight from Ontario to North America?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Ontario to North America, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Ontario to North America, you should book around 2 weeks before departure, which saves you about 29% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 4 weeks before departure.

Good to know

Low seasonFebruary
Cheapest flight$29
Best time to beat the crowds with an average 1% drop in price.
Most popular time to fly and prices are also 2% lower on average.
Flight from Ontario to Las Vegas

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 
FraxysFlew with American AirlinesONT-DFWJun 2025
Bring an empty refillable water bottle/container through TSA and fill it up as soon as you pass the security check. The water station is available to the left and to the right of it.
Verified travelerFlew with FrontierONT-LASDec 2024
Pack light and arrive earlier.. Also download the App and check your flight and check in..
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.
Verified travelerFlew with Alaska AirlinesONT-PDXOct 2024
Portland is a big airport, give yourself time.
MariFlew with American AirlinesONT-CLTJan 2024
Bring a blanket it's very cold on plane

FAQs - booking North America flights

  • 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.

  • What is the cheapest time of day to fly to North America?

    The cheapest time of day to fly to North America is generally in the evening, when round-trip flights cost $309 on average. Morning departures are around 100% cheaper than evening flights, on average. The most expensive time of day to fly to North America is generally at night, which is peak travel time and where the average cost of a ticket is $359.

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 $121 one-way - $183 round-trip; Dallas $144 one-way - $258 round-trip; Las Vegas $73 one-way - $114 round-trip

Reviews of the 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
SouthwestOverall score based on 4235 reviews
7.0Food
8.1Boarding
8.0Comfort
7.5Entertainment
8.6Crew
Airline reviews

Sacrament staff are always polite and helpful. Airport is easy to maneuver and boarding is straightforward.

10.0 ExcellentStacy, Oct 2025SMF - DEN
Read more Southwest reviews

Sacrament staff are always polite and helpful. Airport is easy to maneuver and boarding is straightforward.

As always, the entire Southwest experience was wonderful, from online booking to flight to baggage retrieval. Very grateful.

The weather could have been better. There was a 40 minute ATC delay in SFO because of marine fog and a micro cell storm delayed landing and take-off at Nashville. The gate was changed 5 minutes from boarding from gate B3 to gate C23 at Nashville airport.

The cabin was quiet for the redeye flight. The area was clean. The staff was great. The 787 Max was in good condition. Drawbacks were that the seat widths were tight for some passengers. The seat padding was at best average and for a long flight uncomfortable.

Delayed flight. Nicest crew member was a SW pilot flying seated next to me who kindly move to seat the final passenger. Flight extra delayed. My cup of refreshment of ginger ale was so packed with ice it was literally 2 sips.

No trays in our seats, we sat in first row, purchased a business class fare. Had to hold our drinks and snack in our hands. No plugs for our cell phones. Had to pay for it a drink cocktail each. Seats so uncomfortable.

Flight wasn’t even full, but too many carry-ons caused us to run out of bin space. New bag fee has folks who would usually check their bags carrying on. Watching Southwest morph into Spirit/Frontier is so sad to watch

Southwest is Southwest. No frills. If you're luck enough to get a happy crew (we did), then it makes for a nicer flight.

It was a perfect flight in all aspects! Both legs!

Great flight, 47 passengers on a 180 seat plane. Stewardess was pleasant and cheerful.

The flight used a B767 with a very old interior from before 2014. The entertainment system did not work at all during the flight despite attempts to reset the system. It was like they flew this route just to be competitive.

Delayed flight (1hour) plus a long layover after an overnight flight with no backup plane available.

Flight delayed for two and half hours and then canceled altogether due to mechanical issues. No mechanic onsite to fix so had to send one from LAX.

My husband upgraded our seats and I don't know if it was due to the type of planet was or if they didn't upgrade our seats. We were supposed to be in I believe comfort seats and they were just as tight as any other seat- no leg room and we are very tall people but at least it wasn't extremely cold. My husband did put in a complaint about our seating because he paid extra and if we would have known that the space and the tightness would have been the same, we just would have gotten the emergency row emergency row seats that we normally get. We love Delta but both our flights coming home we're not good. Oh I forgot to mention that on our flight to Hawaii our luggage wheels got broke and we had to purse new luggage on vacation then we never had this problem so we didn't know protocol and reported it after we got home only for them to tell is we only had 24hrs to report the damage. Not sure what was going on with Delta this vacation trip.

Crew was excellent. Comfort seats not as nice as other kinds of planes.

It was a great flight and the stewards and stewardess were all kind and accommodating!! The seats were comfortable and entertainment screen excellent!

There are 4 flights in consecutive gates with about the same departure time. Two flights were boarding at the same time. One was delayed or boarding would be happening at the same time. I am not sure what Delta and LAX need to do to have a better layout at the end of Terminal 2

There was a security issue at the airport and we were unable to land. We circled endlessly and then landed at another airfield for fuel. We then circled the airport again, almost landed but didn’t fully touch down before circling again. I am thankful to the crew for keeping us safe- the issue was the airline and staff at the airport getting us seats on our connecting flights. That part was hours of searching for someone and getting in double my steps.

Most aspects were good however if they assign boarding zones they ought to enforce them or why bother? My luggage from SAN-JFK-MAD was lost in NY so I without my main bag for two days upon arrival in Spain. They were helpful in tracking it and eventually delivered it to my hotel. The flub was because of a delay upon arrival in NYC. I had booked 2 1/2 hours between flights but we had to hold on the taxiway for an hour after landing while waiting for a clear gate which likely caused the baggage error.

Excellent flight, the planes were newer, they did a nice job with boarding, great service overall.

Same as last comment. Food sucks. Quality. Not surprising most people have no clue about nourishment Clearly

The flight attendants were great, I joked with one I can’t remember her name, a blond, really sweet. I thought it was run well very professional. This was great i survived Spirit, I know for which I speak.

We were in business class. the angled seats in that class do not have a real window view & the placement of the controls are bad. But we knew that. But the food options were mediocre. The taste was fine, but the size was for a child. It’s just really feels like United is skimping on everything. Even when we were in the Polaris lounge they did not have diet sodas. They said they were out no Coke zero no Diet Coke, etc. I do not think the portion of nuts they serve on the plane could get any smaller. Really a minimal service and offer for what you’re paying for in business.

I was in first class. The outlets at my seat did not work. The plane was shabby and run down. I had prepurchsed a day subscription for internet that was not redeemable. I had to repurchase the internet for my flight and then it didn’t work anyway. Quite disappointed in what was supposed to be the launch of a great vacation.

We had to deboard 2 times due to maintenance issues. They changed the plane, and then we got deviated to LAX due to maibtenance issues on the other plane, had to sleep at LAX and los a full day.

From the first moment you interact with United Airlines, you can expect nothing less but extreme frustration. The baggage handler at the bag drop seems completely unbothered by the presence of customers waiting in line. No help was extended to load the baggage whatsoever. And if any of your bags is overweight by 0.01 pound they will make you re-distribute everything in your suitcase just to play power trip. When it was time to board no help was extended to customers to locate their seats. Moreover. It was a chaotic mess at the gate when it was unclear who should board first and everyone just bunched up, trying to get on the plane. I am sure the crew was doing their best to perform their jobs while being paid their wages however it shouldn’t be that hard to smile once or twice when you’re in the business if serving customers. It is a shame for the United States of America to have a flagship carrier of such low caliber. Our flight was also delayed by about an hour and a half due to further delays prior to our inbound flight. Being someone who has travelled for both business and leisure in Asia, Europe, and South America I have never experienced such poor quality of service.

I understand stuff happens, but plane failures are likely due to lack of maintenance. Additionally, air conditioning wasn't working, no snack/drink service, no WiFi. Fortunately, the crew was communicative and light-hearted. United grabbed another plane and we were able to get to our destination.

The pilots were late and it made us 1 hour late. The meat was tough and bok choy was also tough.

Stuck on tarmac for two hours plus a 5.5 hour flight. Rude flight attendant. And no meals, not even for purchase!

I learned that seating towards the end of plane that a line forms for the restroom and people use your chair as a hand railing, bumping your seat consistently. I was seated in the aisle. I think that next time if I am towards the back row I would want to sit in the middle or window seat.

The flight was flawless and we even arrived between 20 and 25 minutes early!

Always seated jammed in rear of aircraft Admirals Club food at DFW terminal D was absolute worst food experience and I pay $600/year to eat this dried out junk

Mostly good. Flight was crowded but Airline personnel were very friendly & accommodating. It would be good to have savory snacks rather than just sweet Biscoff cookies.

It was a red eye flight, so no meals were provided, but it was fine with snacks. The seats felt cramped and almost too narrow.

Very crowded flight but what can you expect these days?? Crew was accommodating.

The seats in economy were appeared to be quite thin and lack sufficient cushioning to be comfortable. Perhaps it was my seating position but the plane seemed notably load.

The entertainment package was vast and the selections were very current. Keep updating it was great.

The seat was so hard my tailbone was aching The crew was kind of a b**** because I made a joke that I didn't care if they close the door I total c*** when she was trying to f****** act like she was mad at me because I said that The flight was bumpy. Sure you didnt have control over that.

4 hours late, including over +1 hour waiting in plane to take off. Baggage left behind too.

While waiting to claim my checked luggage, I discovered the airline had lost it. After a long wait and inquiries, I discovered it was on another flight. Fortunately, the airline finally sent my luggage home.

Boarding was on time and plane departed as scheduled. There are obviously no amenities (food, drink, entertainment) on Frontier, but there also didn't seem to be any issues with luggage space either.

Inbound plane was on time and flight departed on time with no issues while boarding.

I knew going into this that Frontier, being a low cost carrier, would be pretty bare bones and charge for most extras but this was made up for by the fact that the airplane was a reasonably new Airbus, every employee was great and best of all, Everett Washington is an amazing airport - thanks Frontier for flying there!!!

This airline sucks. They offer low rates then charge you for everything, the app does not work well, the seats are the most uncomfortable. Maintenance issues on the flight, and you still have to sit through their credit card commercials. People are nice enough but does not make up for overall poor experience.

Cancelled flight after I arrived at airport after 75 min drive and parking. Next flight was 4 days in the future. Had to scramble and buy a much more expensive flight on another carrier.

I liked the turn-style feature at gate 209B at LAX. Very efficient process. The gate staff also made several, clearly directed announcements so I felt very informed.

The seats were awful, hard plastic covered in sheet vinyl. The airline tries to scam you into paying extra to get seat together when the flight wasn’t full. They were going to separate a family with young children but my wife who had a row to herself gave up her seat so the young mom could be with her young boys. I’m never giving this airline my money again.

It was a short flight so no food or entertainment….

Frontier had yet another flight cancellation. Have never made a complete round trip with this airline without at least one leg getting cancelled. Miserable flights - dirty, uncomfortable planes that apparently always have issues since I've had multiple delays and cancellations with them.

Flight was delayed 3 times, would have been nice to have received text message instead of email notifications. Frontier app wasn’t even updated accordingly, no gate number disclosed. No agent at front desk of gate to inform of delay. Very confused and left if the dark

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