Find flights
When to book
FAQs & Tips
Direct Flights
Airlines
Deals

$46 Find cheap flights from North America to Ontario

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight to Ontario departing on 7/3. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
0 bags
Wed 7/10
Wed 7/17

Search hundreds of travel sites at once for deals on flights to Ontario

In the last 7 days travelers have searched 42,898,604 times on KAYAK, and here is why:

Save 21% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Bundle and saveSave money when you bundle your flight + hotel.

Good to know

Low season

January

High season

May

Cheapest flight

$46
Best time to beat the crowds with an average 12% drop in price.
Most popular time to fly and prices are also 6% lower on average.
Flight from San Francisco to Ontario

FAQs for booking flights from North America to Ontario

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

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from North America to Ontario.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Ontario from North America is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from North America to Ontario?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Ontario with an airline and back to North America with another airline.

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

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Ontario from North America up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Prefer to fly non-stop from North America to Ontario?

Find which airlines fly direct from North America to Ontario, which days they fly and book direct flights.

Nonstop departures

North America to Ontario

Monday

Aeromexico, Air Canada, Air France, +23 more

Aeromexico, Air Canada, +24 more

Tuesday

Aeromexico, Air Canada, Air France, +24 more

Aeromexico, Air Canada, +25 more

Wednesday

Aeromexico, Air Canada, Air France, +23 more

Aeromexico, Air Canada, +24 more

Thursday

Aeromexico, Air Canada, Air France, +24 more

Aeromexico, Air Canada, +25 more

Friday

Aeromexico, Air Canada, Air France, +22 more

Aeromexico, Air Canada, +23 more

Saturday

Aeromexico, Air Canada, Air France, +23 more

Aeromexico, Air Canada, +24 more

Sunday

Aeromexico, Air Canada, Air France, +24 more

Aeromexico, Air Canada, +25 more

See more direct flights

Nonstop returns

Ontario to North America

Monday

Aeromexico, Air Canada, Air France, +23 more

Aeromexico, Air Canada, +24 more

Tuesday

Aeromexico, Air Canada, Air France, +24 more

Aeromexico, Air Canada, +25 more

Wednesday

Aeromexico, Air Canada, Air France, +23 more

Aeromexico, Air Canada, +24 more

Thursday

Aeromexico, Air Canada, Air France, +24 more

Aeromexico, Air Canada, +25 more

Friday

Aeromexico, Air Canada, Air France, +22 more

Aeromexico, Air Canada, +23 more

Saturday

Aeromexico, Air Canada, Air France, +23 more

Aeromexico, Air Canada, +24 more

Sunday

Aeromexico, Air Canada, Air France, +24 more

Aeromexico, Air Canada, +25 more

See more direct flights
See more direct flights

Top 5 airlines serving from North America to Ontario

Need help choosing which airline to fly with from North America to Ontario? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
Alaska AirlinesOverall score based on 9254 reviews
7.3Entertainment
7.9Comfort
8.2Boarding
7.3Food
8.6Crew
Airline reviews

Being seated next to the engine was awful! I was nauseous the entire trip from pre-take-off, flying to landing. The engine vibration was very strong!

2.0 MediocreAnonymous, Jun 2024PDX - LAX
Read more about Alaska Airlines reviews

Being seated next to the engine was awful! I was nauseous the entire trip from pre-take-off, flying to landing. The engine vibration was very strong!

The crew was the best I’ve had the experience of flying with. A misbehaving child was making things difficult for me with bopping my tray table, taking my snack, and continually tapping or bumping me. The crew quietly and respectfully moved me to another seat, and thanked me for my patience. They couldn’t have been more kind. Their professionalism really stood out to me and I am more than happy to leave a great review for them!

I would have appreciated notification that our flight was moved to another gate LAST MINUTE so that we would not have missed it. We got no such notice and had to spend another night to catch an available flight in the morning, which was huge inconvenience. We will never fly Alaska again.

Flight was delayed 2 hours. It was too cold inside the cabin. My seat mate had no jacket so she was shivering the entire flight. The stewardess says there’s no available blanket.

The airline was way too cold. We were freezing, I don’t know if that is normal. Overall it was pretty good flight. Always flown Alaska Airlines and I am not changing.

Mediocre is best way to describe. Bare bones narrow seats, Dirty pulldown tray, unfriendly cabin crew who were in a hurry to serve tiny drinks and tiny snacks. (Compared to much better Hawaiian Airlines experience, .. no comparison!)

I wasn't impressed with the entertainment selection, and the snack sizes were small. But the entire crew was professional and did a great job. For that I would fly Alaska again.

It was really good and that's why we choose AA over other airlines.

In economy, there was actually a decent amount of legroom and it was shocking to be in a bathroom that actually had a little bit of space! It was far more spacious than Most airlines are today. It was pleasant because of that.

Seats are uncomfortable but let room was adequate. The snack is pretty weak and the staff not particularly friendly.

It was good until there was a 3 hour delay because there was not any pilots to fly the plane.

Had to change aircraft due to a faulty door. Surprisingly it only caused about an hour and a half of delay. Delta handled this situation as well as can be expected.

Your crew could maybe answer the call bell at least one of the times I pressed it. I pressed it first time with 2.5 hours left in our flight bc my partner was hungry and wanted a sandwich. We finally got the sandwich with 40 mins left in the flight.

The Flight crew didn’t serve us until about 1.5 hours into the flight because of turbulence but after it ended it was fine to move around. They served us water only and snacks and then NEVER, NOT ONE TIME came through to collect trash until right before landing about 1.5 hours later. There was absolutely no need for that. They crew was just standing around talking and visiting with each other and really never tried to see if we might want something besides water or even try to come pick up trash. This is VERY unusual for a Delta flight but it was not what I would have expected for a 4 hour flight.

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

Had a broken tray in business class. Crew just shrugged it off.

I didn’t like that I could not select my seat and was assigned a seat when I checked in at LAX

Great experience overall. Check in at Austin was congested as they only have about 6 check in kiosks, one was broken, and there was a lot of Spring Break travelers.

I was sitting at comfort +. One of the Asian male crew was so loud when he delivered service. When he asked questions or what food you need, he was shouting. He must be a prison guard before going Delta.

Bag drop off was slow and annoying. Only 2 agents at the entire delta desk, and no one directing traffic for what line to be in, many confused people slowed down the process. Boarding was fine. Seats in Delta comfort plus were fine. Snacks were great! Definitely a bonus. The entertainment system was awful — old, slow, not responsive, and completely unable to play games due to some kind of error. But on the other hand, thank you to Delta for the free WiFi. That made it better.

Connecting flights were poor,especially in Naples.our Lufthansa air bus was a joke.way too small for that long of a flight.no room at all.couldn’t even get out of the seats to move around or go to the bathrooms.we thought we were getting an actual air bus,double decker.i will never fly that long in a plane like that again.kind of misleading to call it an air bus.we actually had more room on our buses that we used.

Crew was very cooperative and professional. Passenger's first checked in bag should be free.

They have trouble to keep their flights in schedule. Seems not having enough staff to provide appropriate customer service. Lacking real agents on site to help customers. Have to use QR code/web site/call to be able to talk to real person can help you - and you may have to punch though series of options first, then hold until someone assist you. Similar for baggage claim, no real agent onsite helping if you missing luggage, not like other airline next to UA desk having staff there even after midnight to assist customers.

Flight was delayed due to the late arrival of the catering truck, which is quite unacceptable. There was a beverage service, but no pretzel, or cookie, or nuts were served in coach.

Flighty delayed on boarding - then group 1 had to check their carry on bags but groups 3 and beyond could carry bags on - very inconvenient for weekend business trip with no checked baggage. Then delayed on the runway - before take off. No communication from pilot on why or how long. Wifi/Entertainment didn't work for 4+ flight. Upon arrival, attendants announced wrong carousel for baggage claim - everyone was waiting at the wrong place for their checked bags. This was a mess united!

Everything was great except for one thing. I was sitting in seat 1L with plenty of windows. Because we couldn’t sit next to each other, my husband was in 2L with only one window that he had to almost turnhis neck around to look out. Therefore, the window position with 1/2 of the “window” seats in business class is not optimal

I was not expecting much as i was not in a premium cabin. I was pleasantly surprised that the seat in economy plus was spacious and food was ample. Party of 5 with 2 parents and 3 kids.

Outstanding in all respects. Early boarding left early arrived early. We were in business class, so was perfectly fine.

Dinner was okay but the breakfast was not eatable on the flight San Francisco to Zurich.

I really do not like the basic in basic economy.

My husband and I pre-ordered our food, but they did not have my husband’s order, and my cheese plate was very average. I asked for a blanket and was told they don’t carry blankets on domestic routs. The flight was on time and smooth!

There were delays on both ends. It made it less than excellent. This plane was great though

Everything was great except for the wifi was junk. Crew was super friendly and helpful

Attendants were rude. Scowling. Seats were miserable and we paid extra.

Somehow I got “offloaded” even though I had my boarding pass and was in transit Food is horrible Staff were nice and cheerful No headphones were provided on 11 hours flight

Fight crew was not very attentive and the bastions were gross!

Our flight was great we left Kona earlier and got into LAX almost an 1hour earlier as well. LAX AA is in repair so to get out and found our bus to get pick up was a bit confusing.

Plane was good but was delayed. probably not AA fault but caused a 1 hour delay. Seating was cramped.

The staff were very helpful with lots of refreshments on offer. The toilets were clean. The seats were comfortable and entertainment was good. No complaints, it was excellent.

amazing! they were so kind and allowed us to sit on empty seats so we could stretch our legs and sleep good. Food is amazing as well plus dessert in the middle of the flight!

I strongly dislike Frontier. I find them barebones, the seats not particularly comfortable, the nickel and diming is maddening, the app is TERRIBLE - super confusing to navigate, and the last 4 frontier flights I have flown have been on AVERAGE 2 hours late, one ruining a fancy night out in Vegas with reservations made well in advance, which was nodded to with a measly 5000 miles, which translates to almost nothing. At least credit a free checked bag or something.

When we arrived we lasted 48 minutes to be able to get off the plane without air and the plane turned off more than half of the passengers because after they started to leave they realized that the bridge was defective

8 hr delay. had to buy another ticket with another airline

Four and a half hour delay in total. What frustrates me most is the poor communication and disorganization.

I appreciated the upgrade to free cary-on bag and seat selection at no charge

FRONTIER SUCKS! The agent downstairs tricked me into booking, just to get to the gate. At the gate, they told me they couldn't help. I then called Customer Service. They and the gate attendants kept blaming each other. Neither side was willing to help the customer.

The agent at check-in was strident, unwelcoming, and condescending to customers ahead of me.

Flight was delay 9hrs and nothing was provided at airport, had to go and get a room to sleep in, paid for Uber back and fort with no offers until we landed back home a 1hr later for a $75 voucher for a future flight.

Didn't like anything..entire crew was very rude to everyone on the flight. Plane old and the trays fall down on you the while time you're flying. Charged more for a carry on bag than for the plane ticket itself. Did make it from point a to point b, but worth the extra money to fly with another airline

9 hours of delay!! Was not able to check my luggage that I paid for!!!

Book cheap flights from North America to Ontario

Recent round-trip flight deals

7/3Wed
nonstopFrontier
1h 23mSFO-ONT
7/6Sat
nonstopFrontier
1h 26mONT-SFO
$46
9/4Wed
nonstopFrontier
2h 37mSEA-ONT
9/10Tue
nonstopFrontier
2h 47mONT-SEA
$48
7/17Wed
nonstopAlaska Airlines
2h 35mSEA-ONT
7/24Wed
nonstopAlaska Airlines
2h 35mONT-SEA
$157
7/17Wed
nonstopAlaska Airlines
2h 35mSEA-ONT
7/24Wed
1 stopAlaska Airlines
5h 32mONT-SEA
$186
7/24Wed
1 stopDelta
6h 45mSEA-ONT
7/27Sat
nonstopDelta
2h 44mONT-SEA
$187
7/24Wed
1 stopDelta
6h 45mSEA-ONT
8/8Thu
1 stopDelta
6h 57mONT-SEA
$196
10/19Sat
1 stopAmerican Airlines
5h 04mHOU-ONT
10/26Sat
1 stopAmerican Airlines
5h 06mONT-HOU
$198
8/31Sat
2 stopsAmerican Airlines
10h 38mLGA-ONT
9/7Sat
1 stopAmerican Airlines
7h 02mONT-LGA
$231
9/4Wed
1 stopUnited Airlines
9h 59mEWR-ONT
9/16Mon
1 stopUnited Airlines
8h 16mONT-EWR
$246
9/11Wed
1 stopUnited Airlines
9h 59mEWR-ONT
9/14Sat
1 stopUnited Airlines
10h 10mONT-EWR
$325

Search by stops

Search by airline

Search by price

Recent one-way flight deals

6/29Sat
nonstopFrontier
2h 44mSEA-ONT
$46
9/5Thu
nonstopFrontier
1h 21mSFO-ONT
$46
9/28Sat
nonstopAmerican Airlines
3h 06mDFW-ONT
$70
7/9Tue
nonstopAlaska Airlines
2h 33mSEA-ONT
$79
7/16Tue
1 stopDelta
6h 45mSEA-ONT
$88
8/26Mon
nonstopAmerican Airlines
3h 07mDFW-ONT
$92
7/10Wed
1 stopDelta
6h 25mDEN-ONT
$98
8/11Sun
nonstopAlaska Airlines
2h 35mSEA-ONT
$98
9/7Sat
1 stopUnited Airlines
7h 37mDFW-ONT
$104
8/23Fri
nonstopUnited Airlines
2h 17mDEN-ONT
$119

Search by stops

Search by airline

Search by price

Last minute flights from North America to Ontario

Last minute flight, train and bus deals

6/13Thu
nonstopFrontier
1h 23mSFO-ONT
6/18Tue
nonstopFrontier
1h 27mONT-SFO
$83
6/13Thu
nonstopFrontier
1h 23mSFO-ONT
6/17Mon
nonstopFrontier
1h 27mONT-SFO
$88
6/15Sat
nonstopUnited Airlines
1h 32mSFO-ONT
6/19Wed
nonstopUnited Airlines
1h 25mONT-SFO
$279
6/11Tue
multi-stopAmerican Airlines
10h 34mJFK-ONT
6/13Thu
multi-stopAmerican Airlines
8h 15mONT-JFK
$286
6/11Tue
multi-stopDelta
9h 43mLGA-ONT
6/13Thu
multi-stopDelta
7h 54mONT-LGA
$286
6/11Tue
multi-stopDelta
11h 00mLGA-ONT
6/13Thu
multi-stopDelta
7h 54mONT-LGA
$291
6/12Wed
multi-stopAmerican Airlines
8h 13mORD-ONT
6/19Wed
multi-stopAmerican Airlines
7h 58mONT-ORD
$310
6/15Sat
nonstopUnited Airlines
1h 32mSFO-ONT
6/19Wed
nonstopUnited Airlines
1h 25mONT-SFO
$324
6/12Wed
nonstopAlaska Airlines
2h 30mSEA-ONT
6/16Sun
nonstopAlaska Airlines
2h 40mONT-SEA
$467
6/15Sat
multi-stopAlaska Airlines
25h 41mDEN-ONT
6/22Sat
multi-stopAlaska Airlines
6h 51mONT-DEN
$534

Search by stops

Search by airline

Search by price

Flights to Ontario

Destination:

Ontario (ONT)United States

Return flight deals:

Ontario - North America

Cabin classes:

$447
$478
$193
$36