What is the cheapest airline that flies from Missouri to Ontario?

American Airlines, United Airlines, and WestJet are the most popular carriers operating from Missouri to Ontario

How many flights depart from Missouri to Region of Ontario on average per week?

The number of flights available between Missouri and Region of Ontario is 21 per week as of April 2026. The most frequent departure day is Mon, with 14% of weekly flights leaving on this day.

How long is the flight from Missouri to Region of Ontario?

The flight from Missouri to Region of Ontario depends on which airports you’re departing from and arriving to, and whether or not you have a layover. If you fly from St. Louis (a popular airport in Missouri) to Toronto Pearson Intl Airport (the most popular airport in Region of Ontario), then the flight time is 1h 51m on average. If you fly from Kansas City (another popular airport in Missouri) to Toronto Pearson Intl Airport, then the average flight time is 8h 05m.

How many flights depart from Missouri to Region of Ontario on average per day?

As of April 2026, there are 3 flights per day flying from Missouri to Region of Ontario. The most common time of day flights depart is 4:00p.m., with 100% of flights taking off in the afternoon.

When did momondo last update prices for flights from Missouri to Ontario?

Prices for flights from Missouri to Ontario are refreshed on a daily basis.

How many operators does momondo search for flights from Missouri to Ontario?

The number of operators available for flights from Missouri to Ontario is 1 as of April 2026.

How old do you have to be to fly from Missouri to Ontario?

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Missouri to Ontario.

What documentation or ID do you need to fly to Ontario?

The travel and health documents required for your trip to Ontario can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Ontario. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

C$ 191 Cheap Flights from Missouri to Ontario in 2026

1 adult

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Find the cheapest flights from Missouri to Ontario

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

4:17 p.m. - 8:05 p.m.

STL

YYZ

26h 48m

1 stop

7:45 a.m. - 12:09 a.m.

YYZ

STL

17h 24m

1 stop

C$ 433Multiple Airlines

Thu, 11 Jun - Mon, 15 Jun

4:17 p.m. - 4:45 p.m.

STL

YYZ

23h 28m

1 stop

4:50 p.m. - 12:09 a.m.

YYZ

STL

8h 19m

1 stop

C$ 445Multiple Airlines

Thu, 11 Jun - Sun, 14 Jun

7:00 a.m. - 5:44 p.m.

STL

YYZ

9h 44m

1 stop

11:39 a.m. - 8:30 p.m.

YYZ

STL

9h 51m

1 stop

C$ 461American Airlines

Wed, 17 Jun - Wed, 24 Jun

9:08 a.m. - 5:44 p.m.

STL

YYZ

7h 36m

1 stop

11:39 a.m. - 7:22 p.m.

YYZ

STL

8h 43m

1 stop

C$ 490American Airlines

Wed, 17 Jun - Wed, 24 Jun

2:36 p.m. - 11:24 p.m.

STL

YYZ

7h 48m

1 stop

1:15 p.m. - 11:54 p.m.

YYZ

STL

11h 39m

1 stop

C$ 511American Airlines

Wed, 27 May - Sat, 30 May

8:17 p.m. - 9:55 p.m.

STL

YYZ

48h 38m

2 stops

7:10 a.m. - 12:21 a.m.

YYZ

STL

18h 11m

1 stop

C$ 515Multiple Airlines

Mon, 4 May - Mon, 11 May

3:16 p.m. - 9:35 p.m.

MCI

YOW

5h 19m

1 stop

6:25 a.m. - 10:29 a.m.

YOW

MCI

5h 04m

1 stop

C$ 717United Airlines

Mon, 1 Jun - Sat, 13 Jun

7:45 a.m. - 9:35 p.m.

MCI

YOW

12h 50m

1 stop

10:37 a.m. - 2:17 p.m.

YOW

MCI

4h 40m

1 stop

C$ 746United Airlines

Wed, 2 Sep - Wed, 9 Sep

2:40 p.m. - 9:40 p.m.

STL

YXU

6h 00m

1 stop

9:30 a.m. - 2:02 p.m.

YXU

STL

5h 32m

1 stop

C$ 755Air Canada

Sat, 4 Jul - Tue, 7 Jul

12:10 p.m. - 9:40 p.m.

STL

YXU

8h 30m

2 stops

12:20 p.m. - 6:42 p.m.

YXU

STL

7h 22m

2 stops

C$ 757Air Canada

Sat, 4 Jul - Tue, 7 Jul

American Airlines flights from Missouri to Region of Ontario

Our best American Airlines deals on Missouri to Region of Ontario flight tickets

American Airlines

17 Jun

STL7:00 a.m.Lambert-St Louis

9h 44m

1 stop

YYZ5:44 p.m.Toronto Pearson Intl

24 Jun

YYZ11:39 a.m.Toronto Pearson Intl

9h 51m

1 stop

STL8:30 p.m.Lambert-St Louis

C$ 461

American Airlines

17 Jun

STL9:08 a.m.Lambert-St Louis

7h 36m

1 stop

YYZ5:44 p.m.Toronto Pearson Intl

24 Jun

YYZ11:39 a.m.Toronto Pearson Intl

8h 43m

1 stop

STL7:22 p.m.Lambert-St Louis

C$ 490

American Airlines

27 May

STL2:36 p.m.Lambert-St Louis

7h 48m

1 stop

YYZ11:24 p.m.Toronto Pearson Intl

30 May

YYZ1:15 p.m.Toronto Pearson Intl

11h 39m

1 stop

STL11:54 p.m.Lambert-St Louis

C$ 511

Air Canada flights from Missouri to Region of Ontario

Our best Air Canada deals on Missouri to Region of Ontario flight tickets

Air Canada

7 May

STL7:05 a.m.Lambert-St Louis

1h 51m

YYZ9:56 a.m.Toronto Pearson Intl

10 May

YYZ11:00 a.m.Toronto Pearson Intl

2h 06m

STL12:06 p.m.Lambert-St Louis

C$ 663

Air Canada

7 May

STL1:05 p.m.Lambert-St Louis

5h 53m

1 stop

YYZ7:58 p.m.Toronto Pearson Intl

10 May

YYZ11:00 a.m.Toronto Pearson Intl

2h 06m

STL12:06 p.m.Lambert-St Louis

C$ 668

Air Canada

8 May

STL1:05 p.m.Lambert-St Louis

17h 35m

2 stops

YYZ7:40 a.m.Toronto Pearson Intl

10 May

YYZ2:00 p.m.Toronto Pearson Intl

7h 25m

1 stop

STL8:25 p.m.Lambert-St Louis

C$ 672

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Thu 11/6

4:17 p.m.-8:05 p.m.

1 stop26h 48m

Toronto Pearson Intl

Mon 15/6

7:45 a.m.-12:09 a.m.

1 stop17h 24m

C$ 433

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Thu 11/6

4:17 p.m.-4:45 p.m.

1 stop23h 28m

Toronto Pearson Intl

Sun 14/6

4:50 p.m.-12:09 a.m.

1 stop8h 19m

C$ 445

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Wed 17/6

7:00 a.m.-5:44 p.m.

1 stop9h 44m

Toronto Pearson Intl

Wed 24/6

11:39 a.m.-8:30 p.m.

1 stop9h 51m

C$ 461

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Wed 17/6

9:08 a.m.-5:44 p.m.

1 stop7h 36m

Toronto Pearson Intl

Wed 24/6

11:39 a.m.-7:22 p.m.

1 stop8h 43m

C$ 490

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Wed 27/5

2:36 p.m.-11:24 p.m.

1 stop7h 48m

Toronto Pearson Intl

Sat 30/5

1:15 p.m.-11:54 p.m.

1 stop11h 39m

C$ 511

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Mon 4/5

8:17 p.m.-9:55 p.m.

2 stops48h 38m

Toronto Pearson Intl

Mon 11/5

7:10 a.m.-12:21 a.m.

1 stop18h 11m

C$ 515

Quickest round-trip

Kansas CityOttawa

MCI - YOW

MCIYOW

Kansas City

Mon 1/6

3:16 p.m.-9:35 p.m.

1 stop5h 19m

Ottawa

Sat 13/6

6:25 a.m.-10:29 a.m.

1 stop5h 04m

C$ 717

Kansas CityOttawa

MCI - YOW

MCIYOW

Kansas City

Wed 2/9

7:45 a.m.-9:35 p.m.

1 stop12h 50m

Ottawa

Wed 9/9

10:37 a.m.-2:17 p.m.

1 stop4h 40m

C$ 746

St. LouisLondon

STL - YXU

STLYXU

Lambert-St Louis

Sat 4/7

2:40 p.m.-9:40 p.m.

1 stop6h 00m

London

Tue 7/7

9:30 a.m.-2:02 p.m.

1 stop5h 32m

C$ 755

St. LouisLondon

STL - YXU

STLYXU

Lambert-St Louis

Sat 4/7

12:10 p.m.-9:40 p.m.

2 stops8h 30m

London

Tue 7/7

12:20 p.m.-6:42 p.m.

2 stops7h 22m

C$ 757

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Missouri to Region of Ontario

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Other information

What is the cheapest month to fly to Region of Ontario?

In general, June is the cheapest month to fly from Missouri to Region of Ontario. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around C$ 558. If you are unable to visit Region of Ontario during the month of June, then departing from Missouri during the month December is also very affordable. Most momondo users find prices during this month for around C$ 649.

What is the cheapest day to depart on your flight to Region of Ontario?

The cheapest day to depart from Missouri to Region of Ontario is on a Sunday. Travellers who choose to depart for Region of Ontario on a Sunday will often find tickets for as low as C$ 469. The most expensive day to fly to Region of Ontario is Tuesday, with ticket prices averaging around C$ 645.

What is the cheapest time of day to depart on your flight to Region of Ontario?

Our most recent data shows that the best time of day to fly to Region of Ontario is in the morning. Flights from Missouri to Region of Ontario during this time can be as low as C$ 581. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are C$ 645 on average. Flights to Region of Ontario from Missouri in the afternoon are generally more expensive because this time of day is more convenient for travellers’ schedules.

What is the cheapest Missouri to Ontario flight route?

Fly from Lambert-St Louis to Toronto Pearson Intl for the best Missouri - Ontario flight prices

What cabin class options are available on Missouri to Ontario flights?

There is only 1 cabin class available to choose from on Missouri to Ontario flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Missouri to Region of Ontario flights?

You could potentially save up to 56% on your flight if you consider stops on a Missouri to Region of Ontario flight.

Cheap Missouri to Region of Ontario flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Missouri to Region of Ontario

Fastest flight time	1h 51m
Direct flights	Every day
Airports in Region of Ontario	123 airports

The fastest flight from Missouri to Region of Ontario takes 1h 51m

Direct flights go from Missouri to Region of Ontario every day.

There are 123 airports in Region of Ontario. From Missouri there are direct flights to Montreal Pierre Elliott Trudeau Intl (YUL), Toronto Pearson Intl (YYZ).

Search flight deals

Frequently asked questions about flying from Missouri to Ontario

When did momondo last update prices for flights from Missouri to Ontario?
Prices for flights from Missouri to Ontario are refreshed on a daily basis.
How many operators does momondo search for flights from Missouri to Ontario?
The number of operators available for flights from Missouri to Ontario is 1 as of April 2026.
How old do you have to be to fly from Missouri to Ontario?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Missouri to Ontario.
What documentation or ID do you need to fly to Ontario?
The travel and health documents required for your trip to Ontario can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Ontario. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular plane model from Missouri to Region of Ontario?
momondo data reveals that the most frequently booked plane model on the route from Missouri to Region of Ontario is Embraer 175, representing 24.84% of all bookings. The subsequent popular models are Boeing 787-8 Dreamliner at 18.47%, Canadair (Bombardier) Regional Jet 900 at 17.83%, and Airbus A220-300 at 14.01%.

Best airlines flying from Missouri to Region of Ontario

Compare and see reviews for airlines that fly from Missouri to Region of Ontario with momondo

Airline	Rating	Free Cancellation	Price
Air Canada	PriceFrom C$ 327	Free Cancellation	Rating 7.1 10,915 reviews		Search Air Canada flights

Why use momondo?

Why should I use momondo to find a flight deal from Missouri to Ontario?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Missouri to Ontario . Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Missouri to Ontario with flexible booking policies on momondo?

Flights from Missouri to Ontario with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Missouri to Ontario?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Missouri to Ontario.

I’m not ready to book a flight from Missouri to Ontario right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Missouri to Ontario flights. All you need is a valid email address and we will do the rest; it is that quick and easy.