$166 Find Cheap Flights from Ontario to Missouri

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Low seasonFebruary
High seasonApril
Cheapest flight$166
Best time to beat the crowds with an average 0% drop in price.
Most popular time to fly and prices are also 4% lower on average.
Flight from Toronto to Kansas City

FAQs for booking flights from Ontario to Missouri

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

    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 Missouri.

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

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

    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 Missouri 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 Missouri?

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

  • Which is the cheapest airport to fly into in Missouri?

    Prices will differ depending on the departure airport, but generally, the cheapest airport to fly to in Missouri is Lambert-St Louis Airport (STL), with an average flight price of $233.

  • What is the cheapest day to fly to Missouri?

    Based on KAYAK data, the cheapest day to fly to Missouri is Thursday where round-trip tickets can be as cheap as $356. On the other hand, the most expensive day to fly is Sunday, where round-trip prices are $541 on average.

  • What is the cheapest time of day to fly to Missouri?

    The cheapest time of day to fly to Missouri is generally in the evening, when round-trip flights cost $288 on average. Morning departures are around 28% more expensive than evening flights, on average. The most expensive time of day to fly to Missouri is generally in the afternoon, which is peak travel time and where the average cost of a ticket is $473.

  • What is the cheapest flight to Missouri?

    The cheapest ticket to Missouri from Ontario found in the last 72 hours was to St. Louis, at $204 round-trip. The most popular route is Toronto Pearson Intl Airport (YYZ) to St. Louis (STL) and the cheapest round-trip airline ticket found on this route in the last 72 hours was $204.

  • What is the cheapest month to fly from Ontario to Missouri?

    The cheapest month for flights from Ontario to Missouri is April, when tickets cost $310 (return) on average. On the other hand, the most expensive months are October and November, when the average cost of round-trip tickets is $910 and $894 respectively.

  • How far in advance should I book a flight from Ontario to Missouri?

    To get a below average price on the flight from Ontario to Missouri, you should book around 3 weeks before departure. For the absolute cheapest price, our data suggests you should book 24 weeks before departure.

  • How long is the flight to Missouri?

    An average nonstop flight from Ontario to Missouri takes 5h 23m, covering a distance of 910 miles. The shortest route is Toronto Pearson Intl Airport (YYZ) to St. Louis (STL) with an average flight time of 2h 03m.

  • What are the most popular destinations in Missouri?

    Based on KAYAK flight searches, the most popular destination is St. Louis (60% of total searches to Missouri). The next most popular destinations are Kansas City (33%) and Springfield (6%). Searches for flights to Joplin (2%) are also popular.

Top 5 airlines serving from Ontario to Missouri

Need help choosing which airline to fly with from Ontario to Missouri? 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
DeltaOverall score based on 7937 reviews
7.9Comfort
7.9Entertainment
7.3Food
8.2Boarding
8.5Crew
Airline reviews

Food from the flight from Atlanta to Santiago was very poor..

4.0 OkayAnonymous, May 2025FAI - SEA
Read more Delta reviews

Food from the flight from Atlanta to Santiago was very poor..

Flight was delayed due to weather. Crew did a nice job of making us comfortable. No complain complaints.

Fine except the person next to me took up her seat had raised the arm divide so she spilled into my seat. because of her size. Fortunately no one was in the seat on my right so I could use part of it.

Delta is my preferred airline. I've traveled with them for years. On time in most cases, good communication, easy to use app. Most planes are pretty nice. I was on a CRJ 700/900 however, which was pretty badly aged inside and needed a refresh. No infotainment, unreliable wifi, best to download before boarding or bring a book. Food choices are really just snacks on this flight, nice variety but about what you'd expect. Great staff and prompt in departure and early arrival too. Overall quite satisfied.

Crew was friendly Love the entertainment in the seat head rest.

Delta flight was on time, seats were comfortable, and crew was nice.

This had nothing to do with Delta… The flights were on time and flawless. The service was excellent. We purchased seats in (aisle/middle) comfort plus since this was a cross country flight. Unfortunately, the woman seated at the window was 300+ pounds and, as might be expected, covered up about a third of the middle seat also. there was absolutely nothing that Delta could have done about that… I just don’t know what the answer should be. If you purchase a seat, you should should be able to use the entire seat and not just the portion that someone else is not sitting/oozing in. Disappointing…there should be something that could be done….I'm just not sure what solution could be.

Delayed take-off. Very small plane so very scary with lots of bumps during the flight. Would never fly Delta on short flights in small 80 seaters plane again! Felt relieved when landed.

Delta is a cut above the others in customer service.

The worst part was I was NOT allowed in the lounge even though I was holding a first class ticket and have a premium American Express card. I have flown Business or First Class with many airlines. Delta is the ONLY one who does not extend this courtesy to anyone except people who hold the very expensive American Express card. As a result, I won’t fly Delta if I have any other choice.

Very nice and clean plane. Transit time between flights was tight though

Our flights got changed from United to Air Canada and our purchased seats did not get transferred so we had to pay for seats twice. I brought it up with Air Canada and they stated I had to go back and chase it with United. The united seats were $21 Canadian each and Air Canada were $56 each so we have paid $77 for each seat. Very unhappy

So far so good but food and entertainment are not available for this flight

Plane temperature was comfortable (not to hot) when boarding and waiting for takeoff.

Michael, our FA was very attentive, even finding me a chocolate brownie from economy class when the dessert selections were all dairy based. ( intolerant, not allergic so don’t usually need to order dairy free)

We tried to upgrade to economy premium but were told this was not possible as we had booked through United Airlines (and Air Canada was operating the flight). This seemed silly given there was ample space in economy premium. Additionally, we had to wait almost 1.5 hours upon arrival to taxi to the gate. Otherwise, the crew were very pleasant and passengers were friendly.

It was my first time with United Airlines and I would say it was very good experience and best of all the flights were on time. Will definitely fly with United Airlines next time.

headphone jack didnt work for the first flight and not much variety

Plane 3 hours late. Missed connection. No help from gate staff. App horrible. Lost connection repeatedly. No service desk. Finally got help from young girl driving cart.

Not as good as expected Air Can needs to improve totally rated on internet as worst

In flight connectivity (via T-Mobile) was often not working.

Seats were roomy. Lavatories were surprisingly big and clean. Plenty of entertainment available. We were fed and offered drinks, multiple times during the flight.

Pitch was very small. Knees were on the seat back in front of me.

Paid $35 and not able to access the internet at all.

Several delays. Next flight was worse. Did not arrive home until 2am PT

Very helpful ground crew after an earlier flight delay and being rebooked on a different flight.

Not very good , the stewardess were unfriendly and they don't like to be bothered. Cos was a night flight and they need to sleep.

Everything about the flight was lovely…We left early, arrived early, cabin crew were efficient and helpful. Flight was easy and most pleasant.

First world problems, but still… We were seated in first class and asked for a cocktail on a very short, 50 minute flight. After our drink order was taken, a half hour went by, and we noticed that every other person in the small plane had been served except for us. We got up to ask about it, the drinks finally came, then were taken away three minutes later since the flight was so short. Really strange situation, on the other hand, we were in Utah.

We missed our flight. The boarding pass had the wrong gate and by the time we received the text from Kayak, our flight was already gone. I’ll never use Kayak again and will go direct to the airlines in the future.

Internet on both flights was sketchy. Thus in flight entertainment was non- existent on MN - Balrimote leg.

We never had an experience they canceled the flight and they did not offer us an alternative flight. I had to book one on my own expense. They offered us food voucher and we could not use them at the airport it kept saying not attached to an existing flight. The people at the counter were rude and cold and they did not care about our situation

It took 30 minutes to check in with the Westjet rep. They didn’t have enough seats and she needed to make a call… I am always “randomly” selected to be checked at security. Their “randomly “ selection system may need some updating. They treat people like criminals. It is not appropriate behavior.

Found the seats very crowded—too close together ! And waited a long time for our luggage All staff at both ends were excellent!!!

Flight cancelled and Kayak switched our return flight to a red eye. Ridiculous.

Will never book through you again. Very disappointed in the notices and action taken or provided when planes are rescheduled, enough to cause missed connections

Lost my luggage. Filed a report and there is no response. Received a phone call from another airline that said they had the bag and they did not know what to do with it

Very good over all , would have been nice to have entertainment on the flight

Absolutely the worst airline I have ever taken. They lost my baggage and told me my bag tags had been cancelled. When my bags arrived days later I had to pick them up at 3:15 am. My return flight was delayed another 6 hours and they broke my bag. Westjet does nothing to try and make it a better customer experience and all the customers services representatives I spoke with were useless and incompetent. Never flying westjet again.

Easy self checkin and baggage drop. No in seat entertainment, but wifi and app worked well

The ground staff was so rude in Toronto airport ...very rude and did not answer simple questions, and made me look like a fool. Very rude ground staff.

My flight got delayed 5 times and then got cancelled eventually, I had to get a hotel and uber and pay for food for an extra night without any plans. It was a horrible experience, instead of Air Canada, I was flying with United .

I had a nice flight with free wifi. So I was able to message family members and stream music during my flight, which made the trip go by fast. I also enjoyed flying on there Airbus A220. The plane looked very new and it also got up to speed fast down the runway and didn't need much runway to get airborne.

Overall good experience. The flight from Toronto to Denver does not have entertainment - movies to watch.

Ensure prepaid food arrangements are appropriately understood by flight crew of who purchased and who did not

All was fine. Weather was a bit stormy, but nothing kayak can do about that! 😊

I paid for a comfort class seat and was seated in economy.

My plane was cancelled and had to be rebook for the evening was not happy.

The flight was cancelled and we had to rebook on Porter to make our cruise the next day. Air Canada has not compensated. We won’t be flying with them again. This is the second time this has happened. Also the return flight was delayed 2 hours who knows why.

Separated me and my wife and wife’s sister in far apart different seats even though I booked them all together. Just scams after scams to make us pay more. Worst airline

Book cheap flights from Ontario to Missouri

Recent round-trip flight deals

5/23Fri
nonstopAir Canada
2h 06mYYZ-STL
5/25Sun
nonstopAir Canada
1h 55mSTL-YYZ
$325
5/31Sat
1 stop
11h 27mYYZ-MCI
6/7Sat
1 stop
9h 59mMCI-YYZ
$329
5/22Thu
nonstopUnited Airlines
2h 06mYYZ-STL
5/27Tue
2 stopsUnited Airlines
8h 29mSTL-YYZ
$345
5/22Thu
1 stopUnited Airlines
10h 48mYYZ-STL
5/25Sun
2 stopsUnited Airlines
7h 59mSTL-YYZ
$350
5/24Sat
1 stopWestJet
5h 22mYYZ-STL
5/31Sat
1 stopWestJet
4h 40mSTL-YYZ
$396
5/22Thu
1 stopWestJet
5h 19mYYZ-STL
5/27Tue
2 stopsWestJet
11h 04mSTL-YYZ
$404
5/17Sat
1 stopAmerican Airlines
6h 31mYYZ-STL
5/24Sat
1 stopAmerican Airlines
8h 47mSTL-YYZ
$458
6/18Wed
1 stopDelta
10h 17mYUL-STL
6/25Wed
1 stopDelta
9h 24mSTL-YUL
$478
6/19Thu
1 stopDelta
15h 53mYUL-STL
6/21Sat
1 stopDelta
5h 24mSTL-YUL
$497
5/31Sat
1 stopAmerican Airlines
13h 14mYYZ-SGF
6/7Sat
2 stopsAmerican Airlines
7h 15mSGF-YYZ
$559

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Recent one-way flight deals

5/27Tue
1 stop
11h 27mYYZ-MCI
$166
5/29Thu
2 stops
24h 18mYYZ-MCI
$172
5/26Mon
nonstopAir Canada
2h 06mYYZ-STL
$189
5/26Mon
1 stopAir Canada
5h 58mYYZ-STL
$194
5/15Thu
1 stopDelta
8h 13mYYZ-STL
$203
7/17Thu
2 stopsUnited Airlines
9h 27mYYZ-STL
$249
7/28Mon
1 stopDelta
27h 10mYUL-STL
$253
7/21Mon
2 stopsAmerican Airlines
9h 34mYYZ-STL
$262
6/17Tue
2 stopsUnited Airlines
8h 05mYYZ-MCI
$286
7/28Mon
1 stopAmerican Airlines
16h 11mYUL-STL
$294

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Last minute flights from Ontario to Missouri

Last minute flight, train and bus deals

5/7Wed
multi-stopWestJet
5h 52mYYZ-MCI
5/11Sun
multi-stopWestJet
5h 29mMCI-YYZ
$699
5/7Wed
multi-stopWestJet
3h 52mYYZ-MCI
5/16Fri
multi-stopWestJet
3h 48mMCI-YYZ
$743
5/7Wed
multi-stopWestJet
19h 20mYOW-MCI
5/16Fri
multi-stopWestJet
12h 52mMCI-YOW
$856
5/7Wed
multi-stopUnited Airlines
6h 52mYOW-MCI
5/16Fri
multi-stopUnited Airlines
15h 05mMCI-YOW
$934
5/7Wed
multi-stopUnited Airlines
8h 44mYYZ-MCI
5/11Sun
multi-stopUnited Airlines
8h 24mMCI-YYZ
$1,076
5/7Wed
multi-stopAir Canada
16h 14mYOW-MCI
5/16Fri
multi-stopAir Canada
10h 33mMCI-YOW
$1,086
5/7Wed
multi-stopAlaska Airlines
32h 14mYYZ-MCI
5/16Fri
multi-stopAlaska Airlines
20h 40mMCI-YYZ
$1,464
5/7Wed
multi-stopAlaska Airlines
35h 44mYYZ-MCI
5/16Fri
multi-stopAlaska Airlines
20h 40mMCI-YYZ
$1,621

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Everything you need to know for your flight to Missouri

Cabin class types available on flights to Ontario

Cabin classes available on flights to Ontario. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.

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