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 44 per week as of August 2026. The most frequent departure day is Mon, with 18% of weekly flights leaving on this day.

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

As of August 2026, there are 6 flights per day flying from Missouri to Region of Ontario. The most common time of day flights depart is 8:00a.m., with 50% of flights taking off at noon.

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 54m on average. If you fly from Kansas City (another popular airport in Missouri) to Toronto Pearson Intl Airport, then the average flight time is 4h 24m.

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 August 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$ 186 Cheap Flights from Missouri to Ontario in 2026

Discover deals from 900+ travel sites with momondo.

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.

10:35 a.m. - 12:25 a.m.-

12h 50m

5:15 p.m. - 7:39 p.m.-

27h 24m

C$ 484Multiple Airlines

Mon, 26 Oct - Wed, 28 Oct

10:56 a.m. - 11:55 p.m.-

11h 59m

7:40 a.m. - 8:26 a.m.-

25h 46m

C$ 488Multiple Airlines

Fri, 30 Oct - Sun, 1 Nov

2:29 p.m. - 8:55 p.m.-

29h 26m

7:45 a.m. - 4:34 p.m.-

9h 49m

C$ 512Multiple Airlines

Wed, 30 Sep - Mon, 5 Oct

7:29 a.m. - 5:44 p.m.-

9h 15m

11:36 a.m. - 7:22 p.m.-

8h 46m

C$ 519American Airlines

Fri, 30 Oct - Mon, 2 Nov

7:29 a.m. - 5:45 p.m.-

9h 16m

7:09 a.m. - 4:43 p.m.-

10h 34m

C$ 519American Airlines

Fri, 30 Oct - Mon, 2 Nov

5:00 a.m. - 2:32 p.m.-

8h 32m

3:13 p.m. - 12:27 a.m.-

10h 14m

C$ 519American Airlines

Fri, 11 Sep - Thu, 17 Sep

10:56 a.m. - 11:55 p.m.-

11h 59m

4:20 p.m. - 8:26 a.m.-

17h 06m

C$ 521Multiple Airlines

Fri, 30 Oct - Sun, 1 Nov

8:34 p.m. - 2:05 p.m.-

16h 31m

5:15 p.m. - 7:39 p.m.-

27h 24m

C$ 521Multiple Airlines

Mon, 26 Oct - Wed, 28 Oct

8:55 a.m. - 11:49 a.m.-

1h 54mdirect

6:55 p.m. - 8:00 p.m.-

2h 05mdirect

C$ 724Air Canada

Fri, 2 Oct - Tue, 6 Oct

12:10 p.m. - 7:53 p.m.-

6h 43m

12:55 p.m. - 2:00 p.m.-

2h 05mdirect

C$ 730Air Canada

Fri, 2 Oct - Tue, 6 Oct

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American Airlines flights from Missouri to Region of Ontario

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

American Airlines

30 Oct

STL7:29 a.m.Lambert-St Louis

9h 16m

1 stop

YYZ5:45 p.m.Toronto Pearson Intl

2 Nov

YYZ7:09 a.m.Toronto Pearson Intl

10h 34m

1 stop

STL4:43 p.m.Lambert-St Louis

C$ 519

American Airlines

11 Sep

STL5:00 a.m.Lambert-St Louis

8h 32m

1 stop

YYZ2:32 p.m.Toronto Pearson Intl

17 Sep

YYZ3:13 p.m.Toronto Pearson Intl

10h 14m

1 stop

STL12:27 a.m.Lambert-St Louis

C$ 537

American Airlines

1 Sep

STL6:00 a.m.Lambert-St Louis

11h 30m

1 stop

YYZ6:30 p.m.Toronto Pearson Intl

8 Sep

YYZ11:39 a.m.Toronto Pearson Intl

8h 48m

1 stop

STL7:27 p.m.Lambert-St Louis

C$ 543

Delta flights from Missouri to Region of Ontario

Our best Delta deals on Missouri to Region of Ontario flight tickets

Delta

24 Aug

MCI6:59 p.m.Kansas City

12h 40m

1 stop

YUL8:39 a.m.Montreal Pierre Elliott Trudeau Intl

29 Aug

YUL9:30 a.m.Montreal Pierre Elliott Trudeau Intl

9h 34m

1 stop

MCI6:04 p.m.Kansas City

C$ 797

Delta

28 Sep

MCI6:10 p.m.Kansas City

13h 25m

1 stop

YUL8:35 a.m.Montreal Pierre Elliott Trudeau Intl

13 Oct

YUL7:00 a.m.Montreal Pierre Elliott Trudeau Intl

9h 14m

1 stop

MCI3:14 p.m.Kansas City

C$ 807

Delta

30 Sep

MCI7:04 a.m.Kansas City

9h 32m

1 stop

YUL5:36 p.m.Montreal Pierre Elliott Trudeau Intl

13 Oct

YUL7:00 a.m.Montreal Pierre Elliott Trudeau Intl

10h 26m

1 stop

MCI4:26 p.m.Kansas City

C$ 835

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Mon 26/10

10:35 a.m.-12:25 a.m.

2 stops12h 50m

Toronto Pearson Intl

Wed 28/10

5:15 p.m.-7:39 p.m.

1 stop27h 24m

C$ 484

Kansas CityToronto

MCI - YYZ

MCIYYZ

Kansas City

Fri 30/10

10:56 a.m.-11:55 p.m.

1 stop11h 59m

Toronto Pearson Intl

Sun 1/11

7:40 a.m.-8:26 a.m.

1 stop25h 46m

C$ 488

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Wed 30/9

2:29 p.m.-8:55 p.m.

2 stops29h 26m

Toronto Pearson Intl

Mon 5/10

7:45 a.m.-4:34 p.m.

1 stop9h 49m

C$ 512

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Fri 30/10

7:29 a.m.-5:44 p.m.

1 stop9h 15m

Toronto Pearson Intl

Mon 2/11

11:36 a.m.-7:22 p.m.

1 stop8h 46m

C$ 519

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Fri 30/10

7:29 a.m.-5:45 p.m.

1 stop9h 16m

Toronto Pearson Intl

Mon 2/11

7:09 a.m.-4:43 p.m.

1 stop10h 34m

C$ 519

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Fri 11/9

5:00 a.m.-2:32 p.m.

1 stop8h 32m

Toronto Pearson Intl

Thu 17/9

3:13 p.m.-12:27 a.m.

1 stop10h 14m

C$ 519

Kansas CityToronto

MCI - YYZ

MCIYYZ

Kansas City

Fri 30/10

10:56 a.m.-11:55 p.m.

1 stop11h 59m

Toronto Pearson Intl

Sun 1/11

4:20 p.m.-8:26 a.m.

1 stop17h 06m

C$ 521

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Mon 26/10

8:34 p.m.-2:05 p.m.

1 stop16h 31m

Toronto Pearson Intl

Wed 28/10

5:15 p.m.-7:39 p.m.

1 stop27h 24m

C$ 521

Quickest round-trip

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Fri 2/10

8:55 a.m.-11:49 a.m.

Nonstop1h 54m

Toronto Pearson Intl

Tue 6/10

6:55 p.m.-8:00 p.m.

Nonstop2h 05m

C$ 724

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Fri 2/10

12:10 p.m.-7:53 p.m.

1 stop6h 43m

Toronto Pearson Intl

Tue 6/10

12:55 p.m.-2:00 p.m.

Nonstop2h 05m

C$ 730

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, December 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$ 692. If you are unable to visit Region of Ontario during the month of December, then departing from Missouri during the month March is also very affordable. Most momondo users find prices during this month for around C$ 699.

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 Saturday. Travellers who choose to depart for Region of Ontario on a Saturday will often find tickets for as low as C$ 333. The most expensive day to fly to Region of Ontario is Thursday, with ticket prices averaging around C$ 1,035.

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$ 477. If you have a flexible travel schedule, then try to avoid flying at noon when prices are C$ 805 on average. Flights to Region of Ontario from Missouri at noon 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 Region of Ontario flights?

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

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 54m
Direct flights	Every day
Airports in Region of Ontario	125 airports

The fastest flight from Missouri to Region of Ontario takes 1h 54m

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

There are 125 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 August 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 Canadair (Bombardier) Regional Jet 900, representing 42.93% of all bookings. The subsequent popular models are Airbus A220-300 at 29.35%, Embraer 175 at 7.61%, and Boeing 737 MAX 8 at 5.43%.

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$ 333	Free Cancellation	Rating 7.1 11,428 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.