$36 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 5/28. 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
New York1 stop$281
Los Angeles
Los Angeles1 stop$126
Las Vegas
Las Vegasnonstop$74
Chicago
Chicago1 stop$273
San Francisco
San Franciscononstop$107
Miami
Miami1 stop$230
Boston
Boston1 stop$292
Fort Lauderdale
Fort Lauderdale1 stop$190
Denver
Denvernonstop$102
Seattle
Seattlenonstop$139
Atlanta
Atlanta1 stop$311
Dallas
Dallasnonstop$193
Tampa
Tampa1 stop$180
Houston
Houston1 stop$146
Cancún
Cancún1 stop$295
San Diego
San Diego1 stop$124
Honolulu
Honolulu1 stop$382
New York
New York1 stop$281
Los Angeles
Los Angeles1 stop$126
Las Vegas
Las Vegasnonstop$74
Chicago
Chicago1 stop$273
San Francisco
San Franciscononstop$107
Miami
Miami1 stop$230
Boston
Boston1 stop$292
Fort Lauderdale
Fort Lauderdale1 stop$190
Denver
Denvernonstop$102
Seattle
Seattlenonstop$139
Atlanta
Atlanta1 stop$311
Dallas
Dallasnonstop$193
Tampa
Tampa1 stop$180
Houston
Houston1 stop$146
Cancún
Cancún1 stop$295
San Diego
San Diego1 stop$124
Honolulu
Honolulu1 stop$382

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

Fri, Jun 26 - Tue, Jun 30
Frontier Logo
3:34 pm - 4:46 pm
ONT
-
LAS
1h 12mnonstop
Frontier Logo
6:43 pm - 7:51 pm
LAS
-
ONT
1h 08mnonstop
$74Frontier
Sat, May 30 - Mon, Jun 1
Frontier Logo
3:30 pm - 4:43 pm
ONT
-
LAS
1h 13mnonstop
Frontier Logo
1:59 pm - 3:09 pm
LAS
-
ONT
1h 10mnonstop
$75Frontier
Wed, Jun 3 - Mon, Jun 8
Frontier Logo
4:39 pm - 5:49 pm
ONT
-
LAS
1h 10mnonstop
Frontier Logo
6:22 pm - 7:32 pm
LAS
-
ONT
1h 10mnonstop
$76Frontier
Wed, May 20 - Wed, May 27
Alaska Airlines Logo
7:00 am - 9:24 am
ONT
-
PDX
2h 24mnonstop
Alaska Airlines Logo
8:00 am - 10:21 am
PDX
-
ONT
2h 21mnonstop
$197Alaska Airlines
Wed, Jun 3 - Sat, Jun 6
Southwest Logo
3:45 pm - 9:00 pm
ONT
-
PDX
5h 15m
1 stop
Southwest Logo
9:00 am - 12:45 pm
PDX
-
ONT
3h 45m
1 stop
$202Southwest
Tue, May 19 - Sat, May 30
United Airlines Logo
6:59 pm - 5:40 am
ONT
-
ORD
8h 41m
1 stop
United Airlines Logo
8:18 pm - 10:51 pm
ORD
-
ONT
4h 33mnonstop
$273United Airlines
Tue, May 19 - Sun, May 24
American Airlines Logo
11:59 pm - 1:28 pm
ONT
-
JFK
10h 29m
2 stops
American Airlines Logo
6:59 am - 12:05 pm
JFK
-
ONT
8h 06m
1 stop
$282American Airlines
Tue, May 19 - Fri, May 29
American Airlines Logo
11:59 pm - 1:28 pm
ONT
-
JFK
10h 29m
2 stops
American Airlines Logo
3:30 pm - 9:57 pm
JFK
-
ONT
9h 27m
2 stops
$287American Airlines
Fri, May 29 - Tue, Jun 2
United Airlines Logo
6:30 pm - 5:40 am
ONT
-
EWR
8h 10m
1 stop
United Airlines Logo
6:00 am - 12:44 pm
EWR
-
ONT
9h 44m
1 stop
$328United Airlines
Thu, Sep 17 - Mon, Sep 21
Alaska Airlines Logo
7:20 am - 10:22 am
ONT
-
HNL
6h 02mnonstop
Alaska Airlines Logo
12:43 pm - 9:20 pm
HNL
-
ONT
5h 37mnonstop
$385Alaska Airlines
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 $67 round-trip. The most popular route is from Ontario (ONT) to Dallas/Fort Worth Airport (DFW), and the cheapest round-trip airline ticket found on this route in the last 72 hours was $224.

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

The average price for all round-trip flights from Ontario to North America depending on the time of departure, clicked by users on KAYAK in the last 2 weeks.

The cheapest time of day to fly to North America is generally at night, when round-trip flights cost $368 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 $368.

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 $367, 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 September, when tickets cost $281 (return) on average. On the other hand, the most expensive months are March and December, when the average cost of round-trip tickets is $378 and $374 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 Sunday 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 28% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 4 weeks before departure.

Good to know

Low seasonJanuary
Cheapest flight$36
Best time to beat the crowds with an average 9% drop in price.
Most popular time to fly and prices are also 4% 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 
Verified travelerFlew with Alaska Airlines
ONT
-
PDX
Mar 2026
TSA security isn’t bad, sometimes gets crowded right before another flight goes out. Smaller airport but has many flight options.
AdrianaFlew with American Airlines
ONT
-
PHX
Apr 2026
Check on your flight status often, as things can change and you may not be notified promptly
Verified travelerFlew with United Airlines
ONT
-
SFO
Feb 2026
1 hr is doable if you're transferring at sfo but probably just get something to go food wise
FraxysFlew with American Airlines
ONT
-
DFW
Jun 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 Frontier
ONT
-
LAS
Dec 2024
Pack light and arrive earlier.. Also download the App and check your flight and check in..
LeoFlew with American Airlines
ONT
-
CLT
Sep 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 Airlines
ONT
-
PDX
Oct 2024
Portland is a big airport, give yourself time.
MariFlew with American Airlines
ONT
-
CLT
Jan 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.

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 $134 one-way - $232 round-trip; Dallas $154 one-way - $318 round-trip; Las Vegas $125 one-way - $172 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 4317 reviews
8.0Comfort
8.1Boarding
8.6Crew
7.0Food
7.5Entertainment
Airline reviews

The entire experience from boarding to landing was amazing! The crew were very friendly. Will definitely be back.

10.0 Excellentlarry, Apr 2026
LGB - PHX
Read more Southwest reviews

The entire experience from boarding to landing was amazing! The crew were very friendly. Will definitely be back.

Delayed flight, lack of information, boarding process is a mess as is the carryon luggage causing issues when leaving the plane….just a poor experience.

Comfortable. Easy. No problems. Just wish they had gf options for snacks.

The crew was very kind and made going to Hawaii relaxing and fun to look forward to! Thank you Southwest for a pleasant flight!

Terrible. Even though there’s assigned seating now, they are still the slowest boarding airline of anyone.

It was good from LAX to Phoenix, But the connection in Phoenix to Tulsa was not that great. The staff on both flights were great. The choice of free entertainment was ok nothing to brag about. The 45 min delay because of some electrical issue wasn't great from Phoenix to Tulsa. We sat there with hardly any air, The seat I had was between windows so the side of the plane pushed in on you. My being a bigger man it then made the seating area uncomfortable. The seats on the plane had no power to connect to recharge your phone or anything. I would recommend that they should look into a slot or clamp to hold your phone to enjoy while watching the entertainment choices hands-free. Also make it possible to raise the inner seat by the window be able to raise the arm rest up to make more room for larger people to set more comfortably. I would also say other then that stop price gouging the airfare or nickel and diming everything. Not fair for people having to fly for emergencies and be paying for higher prices due to the season or holidays. Your making your money either way and the cost of flying is still going to be the same regardless if there's 100 people or 200 people.

Southwest was greaat! The most expensive but the least upsetting for those we were flying to see.

Boarding was easy. The seats are small and fairly uncomfortable

The problem with the seat assignments is that there were a lot of rows in the front that were empty but my row at the back was full. Just not so pleasant.

Good but I prefer choose your own seat. With the new assigned seats they should board from the back I see no advantage to this new boarding. Just like every other airline

Affirmed my disability by allowing me to board when most accessible. Very parable, helpful and friendly staff. Smooth flight overall! I always fly Alaska when possible! Thank you!

Agent could not provide me a boarding pass for the second leg of my flights - yet with a partner airline. Not understood.

I had to change my flight last minute due to a medical emergency. Their agent was compassionate and extremely helpful. This airlines really cares about making travel, for fun, work, or an emergency a customer-focused experience. Thank you!

More efficient with checking lines and boarding/checking bags when needed.

They were really helpful with every question and my kids had never been on a plane and the staff made them feel comfortable

Overall, it was a good flight. My only quip- they made us check our carry on bags when there was plenty of overhead space left. My wife and I thought maybe the aircraft was really full, but that wasn’t the case. There were a number of open seats, and even more overhead compartments with no luggage. A minor annoyance, sure, but when we intentionally didn’t check luggage to make it easier, it was disappointing to have to do it anyways.

The flight would have been very good , if not dor the constantly screaming baby in the row behind me. Is there a way to isolate people traveling with infants? This is not the first time this has happened to me.

No headphones provided. No gf food. Only 1 beverage cart run sAN to HNL. Rarely saw crew members

I was on flight #3022 departed from San Diego, California to Medford, Oregon. I had Denise & Damaris as my flight attendants. I didn’t have much interaction with Damaris, but I did with Denise who had, this calm, cool collective voice when she spoke about the emergency exit plans before takeoff. I travel often and I’ve never met a flight attendant that can put you at ease. I felt she respects and takes pride in her position and more airlines need to adopt the integrity and respect that she has for Alaska Airlines. Debbie

They treat me well because of my one world status. Crew is attentive and professional. One of the best airlines out there.

Some crew were unfriendly or in some cases just straight up rude.

Booked through Kayak Business, had a seat in middle and towards back due to booking rate, not comfortable.

Outstanding service, efficient & friendly crew, flight was safe, comfortable & on time

United Airline crews were very friendly and very attentive. 12 hours flight was gone like in a shorter one.

Food was surprisingly delicious. Space in the seat is horrible when the seating front is reclined. Movie offerings were terrible. Crew was friendly and helpful.

Flight itself excellent, but delayed so missed connection & got to destination 2 hrs later

Due to cancellation of connecting flight (Lufthansa) I didn’t fly with United

It was a red-eye, but the flight felt surprisingly quick. The seats were very comfortable, and that made resting much easier. I also want to thank the gentleman seated next to me, who graciously moved so my mom could sit beside me. We slept almost the entire way. The cabin crew was respectful in not disturbing us, while also being courteous and professional throughout. Thank you, United.

Boarding was again a "free for all". We were boarding group 4, and almost the entire plane was able to board before us. It's a shame that someone who follows the rules, gets the short end of the stick. Not fair.

It was perfect! I've never flown with United before, but I definitely will in the future

Left early arrived early..right amount of talking from pilots..of course had to love the biscuit and water!

Boarding gate at LAX was too crowded—two gates next to one another

On time departure and early arrival. Flight attendant very nice.

The business class layout of chairs was weired. You are sitting directly across stranger.,

The SFO Lounge crew were amazing. The bartender Faris was great. Thanks!

Friendly crew is the only nice thing. Seats uncomfortable. Food and snacks horrible. Movies were the same as the first 10 hour flight two weeks before

Was not able to do a online check-in because the American Airlines system doesn't store our visa or other passport information, allowing us to have a trouble-free check-in. We were forced to have to check-in at the counter which Changes are upgrade status given that we were not able to check in much earlier.

Good flight, seated and had a water within 5 minutes. Crew was hospitable.

We left at 1030 am pacific from LA and supposed to land at 7 pm Eastern in NY. They made a detour, stopped in Philadelphia and didn’t land till 1130 PM Eastern!!! Worst flight experience with no pilot communication with no explanation as to what was going on. Everyone was very frustrated to say the least.

I cancelled my ticket less than 24 hours deadline but I didn’t get refunded.

Flight was scheduled at 9:40pm. Got delayed to 10 am, the next day. crazy

The bag check, flight check-in, and onboard experience convinced my wife and me that we will actively go out of our way to avoid flying Frontier Airlines in the future. At bag check, we were informed that check-in could only be completed via the Frontier mobile app. Unfortunately, the app was extremely frustrating—sending us through repetitive, confusing loops that repeatedly forced us to decline add-on services with nearly every click. While most airline apps upsell, this one felt intentionally exhausting. As the process dragged on, we became genuinely concerned that my phone battery would die before check-in could be completed. We approached the bag check staff—who were standing together talking—and explained both our frustration and our predicament. They laughed. Later, my wife described the interaction as “gaslighting,” which felt accurate. We were then informed it would cost $25 per person simply to have our boarding passes printed. From that point forward, the tone of the experience was consistently hostile. The bag check employees were condescending and combative, behaving more like bullies than customer service staff. Unfortunately, that same attitude continued onboard. One flight attendant argued with me when I attempted to stow my backpack in the overhead bin. I explained that we had each paid $75 to check our bags specifically so we would not need to use carry-on space and could have adequate legroom. She demanded to see my ticket, pointed out that it said “no carry-on”—which I acknowledged—and I reiterated that this was precisely why we paid to check our bags. Her response was, “I don’t make the rules.” She then walked away, but not before asking if I “truly wanted to fly back to Chicago today?”—an unnecessary and unmistakable threat. It is also worth noting that despite booking our tickets together in the same transaction, we were not seated together. Upon our return to Chicago—where we could once again sit together—we compared onboard experiences. We both remarked on how unhappy the flight attendants appeared and how each of us was separately asked whether we would like to purchase a beverage. We declined. At no point was water mentioned as an option, leaving us with the clear impression that even water came at a cost—or that complimentary water, if available at all, was deliberately left unmentioned. Overall, the experience was shocking and deeply disappointing, but it was also a profound learning experience—one we will not forget and will not repeat. -Steve

Plane was hot and miserable and the crew was rude!

12 hour delay required getting on and off plane 3 times - would have at least liked to have been offered a snack or drink

They didn’t offer a water, even after I asked

They switched our terminal 3 times and we were delayed for four plus hours!!!

It was an early flight and most people napped/slept and the crew let us which was nice.

Remind customers of the need to have passport or new ID for boarding.

The flight never took off and we spent 7 hours at the airport

It was ok. It was expensive to check 2 bags ($75.00 per bag), and then it took a long time to wait for shuttle to take us from one terminal to the terminal where the plane was taking off at LAX. And all of this for a flight where we had to pay for any food or drink that was not water.

Everything you need to know for your flight to North America

Information on your arrival and departure airports