C$ 178 Find Cheap Flights from Missouri to Ontario

1 adult

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

Travellers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 27% or moreCompare multiple travel sites with one search.

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

Free to useThere are no hidden charges or fees.

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

Useful Info
Useful Info

Good to know

Low seasonFebruary
High seasonMay
Cheapest flightC$ 178
Best time to beat the crowds (16% less expensive on average)
Most popular time to fly and prices are also 10% lower on average.
Flight from Kansas City to Toronto

FAQs for booking flights from Missouri to Ontario

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

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

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

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

    Prices will differ depending on the departure airport, but generally, the cheapest airport to fly to in Ontario is Toronto Pearson Intl Airport (YYZ), with an average flight price of C$ 808.

  • What is the cheapest day to fly to Ontario?

    Based on KAYAK data, the cheapest day to fly to Ontario is Thursday when round-trip tickets can be as cheap as C$ 357. On the other hand, the most expensive day to fly is Sunday, when round-trip prices are C$ 927 on average.

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

    The cheapest time of day to fly to Ontario is generally in the afternoon, when round-trip flights cost C$ 224 on average. Morning departures are around 15% more expensive than evening flights, on average. The most expensive time of day to fly to Ontario is generally in the morning, which is peak travel time and where the average cost of a ticket is C$ 671.

  • What is the cheapest flight to Ontario?

    The cheapest ticket to Ontario from Missouri found in the last 72 hours was to Toronto Pearson Intl Airport, at C$ 170 round-trip. The most popular route is Kansas City (MCI) to Toronto Pearson Intl Airport (YYZ) and the cheapest round-trip airline ticket found on this route in the last 72 hours was C$ 170.

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

    The cheapest month for flights from Missouri to Ontario is August, when tickets cost C$ 698 (return) on average. On the other hand, the most expensive months are November and April, when the average cost of round-trip tickets is C$ 1,072 and C$ 1,039 respectively.

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

    To get a below-average price on the flight from Missouri to Ontario, you should book around 3 weeks before departure. For the absolute cheapest price, our data suggests you should book 15 weeks before departure.

  • How long is the flight to Ontario?

    An average direct flight from Missouri to Ontario takes 9h 54m, covering a distance of 2342 km. The shortest route is St. Louis (STL) to Toronto Pearson Intl Airport (YYZ) with an average flight time of 1h 55m.

  • What are the most popular destinations in Ontario?

    Based on KAYAK flight searches, the most popular destination is Ottawa (83% of total searches to Ontario). The next most popular destination is London (17%).

Top airline flying from Missouri to Ontario

Need help choosing which airline to fly with from Missouri 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.
7.0
Air CanadaOverall score based on 9252 reviews
7.3Boarding
7.0Comfort
6.3Food
6.8Entertainment
7.8Crew
Airline reviews

2.5 hour delay sitting in the plane on the tarmac, you tell me how the experience was

2.0 MediocreKamini, Apr 2025ORD - YYZ
Read more Air Canada reviews

2.5 hour delay sitting in the plane on the tarmac, you tell me how the experience was

I hope these comments will find their way to AC customer experience team. Me and my spouse 50 years of aged coming back from 7 days perfect vacation... While boarding in FLL flight AC1621, one of the boarding agents (tall aged african american) man literelly yeld at my wife during the picture talking process. MAM ! STEP !! BACK !!! We are not illegal immegrants beying deported, nor are we in the millitary. We are customers returning home. This was unacceptable. While boarding in YYZ flight AC1154, one of the boarding agents (tall aged caucasian) man criticied with several complesant remarks my passport condition saying that I could not travel intl with it due to stain, decoloration, and BLOOD. My passport does not have blood on it! Yes it might be in less than perfect condition, but their are ways to talk to customer that does not imply not allow a boarding agent to be angry fathery like, or a custom agent looking at a suspicious individual. Both experience were less than acceptable for might I remind you a paying CUSTOMER returning home.

This flight didn't happen for me because of overbooking.

Terrible experience, flight was delayed both ways. Limited compensation for the 5+ hour delay. Will not be flying Air Canada Rouge, and don’t recommend you do either.

The boarding was relatively quick, the crew welcoming and flight uneventful. The omission of meals on all airlines is unacceptable especially when the flight is during a mealtime such as this one, (lunchtime), is unacceptable.

Everything was simple and easy. The lady at the gate was super friendly, I wish I had her name to share. She's a little older, dark-haired. You can tell she likes her job and would be a great influence on any young people training with her.

No Charging ports for personal electronics, which were required to use wifi entertainment.

Rushed, the boarding was a great deal like a Chinese fire drill.

it was red eye flight, it was ok, there was beverage service, thats it i didnt care much as i wanted to sleep

Everything went smoothly. I appreciate the selection of free movies.

Book cheap flights from Missouri to Ontario

Recent round-trip flight deals

30/5Fri
1 stop
8h 25mMCI-YYZ
6/6Fri
1 stop
13h 51mYYZ-MCI
C$ 503
16/6Mon
1 stop
8h 32mSTL-YYZ
24/6Tue
1 stop
15h 03mYYZ-STL
C$ 507
29/5Thu
1 stopUnited Airlines
6h 04mMCI-YUL
8/6Sun
1 stopUnited Airlines
5h 21mYUL-MCI
C$ 615
28/5Wed
1 stopUnited Airlines
6h 04mMCI-YUL
9/6Mon
2 stopsUnited Airlines
15h 34mYUL-MCI
C$ 622
28/5Wed
2 stopsAir Canada
6h 56mMCI-YUL
11/6Wed
2 stopsAir Canada
11h 15mYUL-MCI
C$ 629
28/5Wed
2 stopsAir Canada
9h 11mMCI-YUL
6/6Fri
2 stopsAir Canada
10h 12mYUL-MCI
C$ 638
11/6Wed
1 stopDelta
9h 14mSTL-YYZ
17/6Tue
1 stopDelta
8h 45mYYZ-STL
C$ 640
25/5Sun
1 stopWestJet
4h 23mMCI-YUL
9/6Mon
1 stopWestJet
6h 08mYUL-MCI
C$ 647
25/5Sun
1 stopWestJet
4h 23mMCI-YUL
10/6Tue
1 stopWestJet
6h 16mYUL-MCI
C$ 648
26/5Mon
1 stopDelta
8h 38mMCI-YUL
6/6Fri
1 stopDelta
6h 10mYUL-MCI
C$ 702

Search by stops

Search by airline

Search by price

Recent one-way flight deals

23/6Mon
1 stop
26h 00mMCI-YYZ
C$ 178
12/9Fri
1 stop
17h 43mMCI-YYZ
C$ 218
22/6Sun
2 stops
22h 07mMCI-YYZ
C$ 243
14/5Wed
1 stopDelta
7h 06mMCI-YUL
C$ 267
21/5Wed
1 stopAmerican Airlines
7h 30mSTL-YYZ
C$ 310
16/5Fri
1 stopWestJet
11h 09mMCI-YUL
C$ 311
7/6Sat
1 stopAmerican Airlines
7h 30mSTL-YYZ
C$ 323
14/10Tue
1 stopDelta
9h 06mSTL-YUL
C$ 328
25/5Sun
directAir Canada
1h 55mSTL-YYZ
C$ 334
27/6Fri
directAir Canada
2h 30mSTL-YUL
C$ 397

Search by stops

Search by airline

Search by price

Last minute flights from Missouri to Ontario

Last minute flight, train and bus deals

4/5Sun
multi-stopWestJet
10h 45mMCI-YUL
6/5Tue
multi-stopWestJet
10h 47mYUL-MCI
C$ 913
2/5Fri
multi-stop
19h 04mSTL-YYZ
4/5Sun
multi-stop
11h 45mYYZ-STL
C$ 983
4/5Sun
multi-stopUnited Airlines
8h 50mMCI-YUL
6/5Tue
multi-stopUnited Airlines
7h 39mYUL-MCI
C$ 1,032
4/5Sun
multi-stopUnited Airlines
8h 50mMCI-YUL
6/5Tue
multi-stopUnited Airlines
8h 27mYUL-MCI
C$ 1,039
5/5Mon
multi-stopAmerican Airlines
14h 50mSTL-YUL
8/5Thu
multi-stopAmerican Airlines
9h 31mYUL-STL
C$ 1,158
4/5Sun
multi-stopAmerican Airlines
15h 50mSTL-YUL
7/5Wed
multi-stopAmerican Airlines
9h 31mYUL-STL
C$ 1,199
2/5Fri
multi-stopDelta
5h 56mSTL-YYZ
4/5Sun
multi-stopDelta
7h 51mYYZ-STL
C$ 1,422
2/5Fri
multi-stopDelta
5h 56mSTL-YYZ
4/5Sun
multi-stopDelta
7h 46mYYZ-STL
C$ 1,436
4/5Sun
multi-stopAir Canada
5h 05mMCI-YOW
11/5Sun
multi-stopAir Canada
9h 00mYOW-MCI
C$ 1,794
4/5Sun
multi-stopAir Canada
4h 56mSTL-YUL
7/5Wed
directAir Canada
2h 48mYUL-STL
C$ 1,868

Search by stops

Search by airline

Search by price

Everything you need to know for your flight to Ontario

Cabin class types available on flights to Missouri

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

Not what you’re looking for? Find thousands of other hotels, flights, car rentals and package deals with KAYAK.