$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 2/14. 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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Flight Deals

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$193
Los Angeles
Los Angeles1 stop$130
Las Vegas
Las Vegasnonstop$59
Chicago
Chicago1 stop$162
Miami
Miami1 stop$158
San Francisco
San Francisco1 stop$138
Boston
Boston2 stops$243
Denver
Denvernonstop$70
Fort Lauderdale
Fort Lauderdale1 stop$178
Seattle
Seattle1 stop$119
Atlanta
Atlanta1 stop$125
Dallas
Dallasnonstop$129
Tampa
Tampa1 stop$162
Cancún
Cancún1 stop$287
Houston
Houston1 stop$136
Honolulu
Honolulunonstop$306
San Diego
San Diego1 stop$144
New York
New York1 stop$193
Los Angeles
Los Angeles1 stop$130
Las Vegas
Las Vegasnonstop$59
Chicago
Chicago1 stop$162
Miami
Miami1 stop$158
San Francisco
San Francisco1 stop$138
Boston
Boston2 stops$243
Denver
Denvernonstop$70
Fort Lauderdale
Fort Lauderdale1 stop$178
Seattle
Seattle1 stop$119
Atlanta
Atlanta1 stop$125
Dallas
Dallasnonstop$129
Tampa
Tampa1 stop$162
Cancún
Cancún1 stop$287
Houston
Houston1 stop$136
Honolulu
Honolulunonstop$306
San Diego
San Diego1 stop$144

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, Feb 27 - Fri, Mar 6
Frontier Logo
9:43 pm - 10:53 pm
ONT
-
LAS
1h 10mnonstop
Frontier Logo
7:00 am - 8:06 am
LAS
-
ONT
1h 06mnonstop
$59Frontier
Mon, Mar 9 - Tue, Mar 10
Frontier Logo
9:40 pm - 10:50 pm
ONT
-
LAS
1h 10mnonstop
Frontier Logo
12:17 pm - 1:28 pm
LAS
-
ONT
1h 11mnonstop
$60Frontier
Sat, Mar 28 - Sat, Apr 4
Frontier Logo
7:31 pm - 8:40 pm
ONT
-
LAS
1h 09mnonstop
Frontier Logo
10:30 am - 11:39 am
LAS
-
ONT
1h 09mnonstop
$62Frontier
Thu, Feb 26 - Sun, Mar 1
Delta Logo
1:10 pm - 6:29 pm
ONT
-
SEA
5h 19m
1 stop
Delta Logo
5:30 am - 12:07 pm
SEA
-
ONT
6h 37m
1 stop
$119Delta
Thu, Feb 26 - Sun, Mar 1
Alaska Airlines Logo
4:02 pm - 6:52 pm
ONT
-
SEA
2h 50mnonstop
Alaska Airlines Logo
8:30 am - 11:08 am
SEA
-
ONT
2h 38mnonstop
$129Alaska Airlines
Sun, May 10 - Mon, May 18
Alaska Airlines Logo
3:26 pm - 6:17 pm
ONT
-
SEA
2h 51mnonstop
Alaska Airlines Logo
9:22 pm - 11:58 pm
SEA
-
ONT
2h 36mnonstop
$134Alaska Airlines
Sat, Feb 7 - Sat, Feb 14
American Airlines Logo
9:59 am - 12:17 pm
ONT
-
PHX
1h 18mnonstop
American Airlines Logo
8:25 am - 8:49 am
PHX
-
ONT
1h 24mnonstop
$151American Airlines
Fri, Feb 27 - Mon, Mar 2
Southwest Logo
11:25 am - 5:45 pm
ONT
-
SEA
6h 20m
1 stop
Southwest Logo
11:05 am - 7:05 pm
SEA
-
ONT
8h 00m
1 stop
$151Southwest
Sat, Feb 21 - Sat, Feb 28
Southwest Logo
8:30 am - 2:10 pm
ONT
-
PHX
4h 40m
1 stop
Southwest Logo
2:05 pm - 2:20 pm
PHX
-
ONT
1h 15mnonstop
$153Southwest
Mon, Feb 23 - Sat, Feb 28
American Airlines Logo
5:02 pm - 7:25 pm
ONT
-
PHX
1h 23mnonstop
American Airlines Logo
11:15 am - 11:36 am
PHX
-
ONT
1h 21mnonstop
$157American 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 $58 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 $58.

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 $318, 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 $280 (return) on average. On the other hand, the most expensive months are April and December, when the average cost of round-trip tickets is $377 and $370 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 25% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 4 weeks before departure.

Good to know

Low seasonDecember
Cheapest flight$29
Best time to beat the crowds but there is an average 29% increase 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 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.

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

    The cheapest time of day to fly to North America is generally at night, when round-trip flights cost $359 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 $118 one-way - $182 round-trip; Dallas $150 one-way - $282 round-trip; Las Vegas $104 one-way - $86 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 4268 reviews
8.0Comfort
7.5Entertainment
8.6Crew
7.0Food
8.1Boarding
Airline reviews

Great flight but super high price. Glad it was a business trip and not personal

10.0 ExcellentPieter, Jan 2026
LGB - DAL
Read more Southwest reviews

Great flight but super high price. Glad it was a business trip and not personal

3 hour delay. Had to change plans and was still delayed.

We got exit row seats both flights. Everything was running on time

The boarding and seat assignment system no longer works for me, but I know it is being replaced. Otherwise, I am good with the overall experience.

The lead steward kept singing about "San Francisco" and hotel California---more annoying than humorous....needs work. Flight was smooth and on time.

San Diego airport is brand new, spacious, airy and very smooth checkin at SW baggage drop.

Crew could have been friendlier, maybe I'm spoiled by SW crews. In flight wifi was good. Would be nice to have more food offerings on a 4 plus hour flight

Ever since Southwest starting charging for bags, passengers don't want to pay to check their bags, so the gate agents have to beg people to check their roller bags now because there's "not enough space". This was a terrible business move by Southwest.

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.

Delta’s staff is unmatched. From the gate agents, to the pilots, to the flight attendants… all top of the industry.

The flight was delayed for about 2 hrs. Other than it, it was good.

I am extremely disappointed that delta internal pilot manuals now refer to the Gulf of Mexico as the “gulf of America”. You can bow down to the Orange turd on your own. I will never fly delta again

No lunch on a x-country flight scheduled for 10:50 am departure, arrived 5+ hrs later. That requires a black box label before you pay for the tickets. Worst, when I checked in online, it's specifically said that lunch was served on his flight for economy Plus passengers.

Our flight from SFO to MSP was right on time on 11/15/2025. No delays. As we approached MSP at about 8 pm, we circled in the air until 8:40 pm so I don't call that efficient for MSP. I think the captain should announce the delay and why. (as if we all don't know that we are just circling around the area, slowing down, speeding up, slowing down.) Thank you. Marilyn Fischer

Staff were friendly and happy. Delta could make sure passengers that don't have the app know of changes. Without Kayak I would not have known about the change of gate or the delay. Kayak was faster to notify me.

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.

The flight crew where really good. Better then the crew from BNE to SFO

Food should be changed in menu Many muslims travels in this airlime they need to add one Halal meal

left on time, reasonable boarding process arrived early luggage came out quickly

Some flight attendants were great others were cranky. Seats were very tight and sitting on an aisle was very hard as the carts and people walking constantly bumped shoulder and arm.

It was great with United overall except for two things. 1) It was a 5-hour flight and we were with kids, so we were asking for extra snacks. They were extremely reticent to dole them out even though there wasn't any meal and the kids were starting to hit their limit towards the end. 2) Baggage didn't arrive until 80 minutes after we landed.

I’m so sorry, I can’t remember her name, I believe it was Dimpti. She was stellar, also a mature Asian flight attendant, lots of flowers in her hair, just as amazing! But literally the crew was AWESOME . Only downside is there weren’t any charging outlets. Maybe I needed to ask a flight attendant , but it would’ve been nice to have one easily accessible.

I boarded flight UA#1318 at Sacramento International Airport going back to Houston TX. The flight was scheduled at 5:10am. I was able to check in virtually using the United Airlines app. When I entered the airport, there was no one outside assisting with checked bags as it was for Delta Airlines. Immediately upon entering, there was a LONG, EXTREMELY LONG line to the kiosks to get boarding passes. I stand in line to get boarding passes then had to move to ANOTHER EXTREMELY LONG line to get my bags checked in. While standing in this line, we noticed an agent taking customers to 3 at a time to her station to check their bags in. Lucky for me, she called me back, checked my bags for me and I was on my way. I then encountered another long line at the TSA check and to avoid I ending up having to sign up for CLEAR to bypass it. So glad, I did.,...Both of my flights were great with no issues, butthe check in progress at Bush Airport was so much smoother. Check-in at SMF airport needs to be anaylzed and corrected. Do better United, I know you can....thanks

Pushed back only to get deplaned due to a tire damaged by ground crew. They did at least go pretty fast. The bathrooms should be banned under the Geneva convention. No room to even sit straight on the toilet. The under-seat entertainment units block what little leg room there is.

United airlines has the best customer experience from booking to arrival. I always fly United airlines. The mileage program is excellent

from SFO-> FRA flight, AVML meal was significantly less compared to regular meal, especially no Desert, no Bread, no sides.

The entertainment options were at best, fair. It was exactly the same as my outbound flight. It would have been more entertaining if there were some series from Apple TV, HBO, Showtime or other carriers for me to catch up with.

The flight was on time and arrived early. The crew were friendly and helpful.

While I didn’t watch much tv I would have liked a few more options of TV series from Apple TV or hbo max ..

Overall experience was great. Flights were almost on time in departing and we arrived at our destination as scheduled. No issues with amenities or flight crew. Everything went well as as expected. Will fly again with American Airlines in the future!

The flight was very smooth and the meal in business class was great.

I requested a low sodium meal. Reason being, I take medicine for high blood pressure and I wear compression socks on long flights to help with leg swelling. Having less sodium in meals really helps me feel better on long flights. I received my initial low sodium meal after takeoff. Just before landing, the crew came through with the meal cart and offered me what was being served. I said no thank you and then noticed my low sodium meal in the meal cart, with my name and seat assignment on it. I motioned to the crew member, but he grabbed the meal cart and proceeded to move to the rear of the aircraft. He didn’t see me or other passengers who had attempted to get this attention. He was more concerned about completing meal service since we were due to land in under 45 minutes. I pressed the call light five times from my seat to receive help, but no crew member responded to me. So, I didn’t receive a second meal, one that I requested (the low sodium option). This led me to have a migraine from only eating one meal on an 11-hour flight. This is why I’m not a fan of flying US-based airlines overseas. The crew members continue to show the absolute worst customer service experience. I would not recommend flying American for overseas flights.

Not great. Booked Extra seats and got nothing extra at all. It’s basically a big budget airline.

Horrible. Both legs of my flight were delayed more than 6 hours. No compensation, no screens on the plane, and the plane was not clean.

The flight was smooth, the pilot kept us informed about delays and we arrived more of less on time

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

Very well recently! Frontier is improving and less harrassing customer on luggages! Positive!

Good for a budget airline! It was easy to get on, staff was really nice. Can’t say anything about the food or entertainment because it wasn’t available, which is fine.

I am writing to express my disappointment with my recent Frontier Airlines flight. I was charged $99 at the gate because my bag was said to be too large, yet once onboard there was no available overhead bin space, and I was required to place the bag under the seat in front of me anyway. This made the charge feel unnecessary and unfair. Additionally, before the flight even took off, I was asked to move from the seat I paid for into a middle seat so another passenger and her cat could have my seat to themselves. I was not offered compensation or an explanation for being moved from a paid seat. Between the unexpected bag fee and being forced to give up my seat, this experience fell well below acceptable customer service standards. I would appreciate a review of this situation and appropriate compensation.

It was costly and difficult to check in. $85 to take a small suitcase with me, carry on or checked and $75 on the return trip, Plus $25 if I didn't check my self in check in $25, because I couldn't do it on the kiosk. Small very uncomfortable seats, waited on the runway for near an hour each way. It was my worst flight to date.

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.

It didn’t happen. I booked it and then was told it wasn’t available and then forced to pay far higher prices for a worse option

When I wanted to check in 3 hours prior to boarding time, the employees mentioned “a little over an hour delay” so I waited for an hour then I went to go look for food in the terminal and most people from that flight were in the same area looking for food. Finally I decided after food to check to see if it’s anytime closer and now it’s 2 mins until boarding closes?! What are you kidding me? I didn’t receive anything via sms about boarding now nor via email or on the intercom. I luckily made it through, barely, and then there’s no room for my carry on mind you I’m in the very first row so I had to place my purse in one further row back and my carry on sections down. Not sure who pays for better seats to get your stuff placed all over the plane but that was the worst experience I’ve ever had flying with anyone.

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.

Everything you need to know for your flight to North America

Information on your arrival and departure airports