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

As of December 2025, 14 flights take off from Missouri and land in Region of Ontario each week. The most common flight departure day for this route is Mon, with 14% of weekly flights taking off on this day.

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

Average flight duration from Missouri to Region of Ontario depends on which airport you fly into and out of. Flying from St. Louis to Toronto Pearson Intl Airport is 1h 51m on average, while flying from Kansas City to Toronto Pearson Intl Airport is 6h 25m on average. Toronto Pearson Intl Airport is the most popular airport in Region of Ontario.

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

American Airlines, Air Canada, and Delta are the most popular carriers operating from Missouri to Ontario

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

2 flights are operational daily from Missouri to Region of Ontario as of December 2025. The most popular departure time for this route is 4:00PM, with 100% of flights per day taking off in the afternoon.

What airlines fly to Region of Ontario?

Air Canada, United Airlines and American Airlines are the top three most popular airlines that fly to Region of Ontario from Missouri according to our data. Air Canada is the first choice among our users, with 46% of people opting to fly with this airline when traveling to Region of Ontario. Keep in mind that there are 5 different airlines that fly to Region of Ontario on a routine basis, so you have a few additional options to choose from.

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?

As of December 2025, there are 5 operators available to choose from for flights from Missouri to Ontario.

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

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Missouri to Ontario.

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

The required travel and health documents for your Ontario trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Ontario. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$122 Cheap Flights from Missouri to Ontario in 2025/26

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Round-trip

One-way

Last minute

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Cheap round-trip flights

Enter your travel dates to find the best prices.

11:26 am - 2:40 pm

MCI

YYZ

26h 14m1 stop

3:40 pm - 10:31 am

YYZ

MCI

19h 51m1 stop

$285Multiple Airlines

Thu, Jan 15 - Wed, Jan 21

8:39 am - 11:20 pm

STL

YYZ

13h 41m2 stops

7:15 am - 11:33 pm

YYZ

STL

17h 18m1 stop

$290Multiple Airlines

Mon, Jan 19 - Wed, Jan 21

7:00 am - 12:26 am

MCI

YYZ

16h 26m2 stops

3:40 pm - 10:31 am

YYZ

MCI

19h 51m1 stop

$291Multiple Airlines

Thu, Jan 15 - Wed, Jan 21

4:05 pm - 11:08 pm

STL

YOW

6h 03m1 stop

10:20 am - 3:29 pm

YOW

STL

6h 09m1 stop

$347Air Canada

Sat, Feb 7 - Sat, Feb 14

5:45 pm - 11:54 pm

MCI

YOW

5h 09m1 stop

9:45 am - 7:56 pm

YOW

MCI

11h 11m1 stop

$348United Airlines

Mon, Feb 2 - Fri, Feb 6

3:11 pm - 9:18 pm

STL

YOW

5h 07m1 stop

6:20 am - 2:30 pm

YOW

STL

9h 10m1 stop

$348United Airlines

Mon, Jan 12 - Wed, Jan 14

6:44 pm - 3:08 pm

STL

YUL

19h 24m1 stop

7:30 am - 6:14 pm

YUL

STL

11h 44m2 stops

$354American Airlines

Mon, Feb 2 - Wed, Feb 4

11:05 am - 10:59 pm

STL

YUL

10h 54m2 stops

7:30 am - 6:14 pm

YUL

STL

11h 44m2 stops

$359American Airlines

Mon, Feb 2 - Wed, Feb 4

2:45 pm - 3:35 pm

MCI

YYZ

23h 50m1 stop

4:45 pm - 1:50 pm

YYZ

MCI

22h 05m1 stop

$408Alaska Airlines

Wed, Feb 4 - Sun, Feb 8

8:00 am - 9:38 pm

MCI

YTZ

12h 38m2 stops

12:30 pm - 9:59 pm

YTZ

MCI

10h 29m2 stops

$616Air Canada

Sun, Feb 1 - Thu, Feb 5

American Airlines flights from Missouri to Region of Ontario

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

American Airlines

Feb 2

STL6:44 pmLambert-St Louis

19h 24m

1 stop

YUL3:08 pmMontreal Pierre Elliott Trudeau Intl

Feb 4

YUL7:30 amMontreal Pierre Elliott Trudeau Intl

11h 44m

2 stops

STL6:14 pmLambert-St Louis

$354

Find similar

American Airlines

Feb 2

STL11:05 amLambert-St Louis

10h 54m

2 stops

YUL10:59 pmMontreal Pierre Elliott Trudeau Intl

Feb 4

YUL7:30 amMontreal Pierre Elliott Trudeau Intl

11h 44m

2 stops

STL6:14 pmLambert-St Louis

$359

Find similar

American Airlines

Feb 7

STL6:43 pmLambert-St Louis

19h 25m

1 stop

YUL3:08 pmMontreal Pierre Elliott Trudeau Intl

Feb 14

YUL7:12 amMontreal Pierre Elliott Trudeau Intl

11h 52m

2 stops

STL6:04 pmLambert-St Louis

$364

Find similar

United Airlines flights from Missouri to Region of Ontario

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

United Airlines

Feb 2

MCI5:45 pmKansas City

5h 09m

1 stop

YOW11:54 pmOttawa

Feb 6

YOW9:45 amOttawa

11h 11m

1 stop

MCI7:56 pmKansas City

$348

Find similar

United Airlines

Feb 2

MCI10:00 amKansas City

10h 56m

2 stops

YOW9:56 pmOttawa

Feb 6

YOW2:15 pmOttawa

6h 41m

1 stop

MCI7:56 pmKansas City

$358

Find similar

United Airlines

Jan 15

MCI8:00 amKansas City

12h 18m

2 stops

YOW9:18 pmOttawa

Jan 18

YOW5:11 pmOttawa

5h 48m

1 stop

MCI9:59 pmKansas City

$360

Find similar

Fly from

Fly to

Route

Depart

Return

Price

Kansas CityToronto

MCI - YYZ

MCIYYZ

Kansas City

Thu 1/15

11:26 am-2:40 pm

1 stop26h 14m

Toronto Pearson Intl

Wed 1/21

3:40 pm-10:31 am

1 stop19h 51m

$285

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Mon 1/19

8:39 am-11:20 pm

2 stops13h 41m

Toronto Pearson Intl

Wed 1/21

7:15 am-11:33 pm

1 stop17h 18m

$290

Kansas CityToronto

MCI - YYZ

MCIYYZ

Kansas City

Thu 1/15

7:00 am-12:26 am

2 stops16h 26m

Toronto Pearson Intl

Wed 1/21

3:40 pm-10:31 am

1 stop19h 51m

$291

St. LouisOttawa

STL - YOW

STLYOW

Lambert-St Louis

Sat 2/7

4:05 pm-11:08 pm

1 stop6h 03m

Ottawa

Sat 2/14

10:20 am-3:29 pm

1 stop6h 09m

$347

Kansas CityOttawa

MCI - YOW

MCIYOW

Kansas City

Mon 2/2

5:45 pm-11:54 pm

1 stop5h 09m

Ottawa

Fri 2/6

9:45 am-7:56 pm

1 stop11h 11m

$348

St. LouisOttawa

STL - YOW

STLYOW

Lambert-St Louis

Mon 1/12

3:11 pm-9:18 pm

1 stop5h 07m

Ottawa

Wed 1/14

6:20 am-2:30 pm

1 stop9h 10m

$348

St. LouisMontreal

STL - YUL

STLYUL

Lambert-St Louis

Mon 2/2

6:44 pm-3:08 pm

1 stop19h 24m

Montreal Pierre Elliott Trudeau Intl

Wed 2/4

7:30 am-6:14 pm

2 stops11h 44m

$354

St. LouisMontreal

STL - YUL

STLYUL

Lambert-St Louis

Mon 2/2

11:05 am-10:59 pm

2 stops10h 54m

Montreal Pierre Elliott Trudeau Intl

Wed 2/4

7:30 am-6:14 pm

2 stops11h 44m

$359

Kansas CityToronto

MCI - YYZ

MCIYYZ

Kansas City

Wed 2/4

2:45 pm-3:35 pm

1 stop23h 50m

Toronto Pearson Intl

Sun 2/8

4:45 pm-1:50 pm

1 stop22h 05m

$408

Kansas CityToronto

MCI - YTZ

MCIYTZ

Kansas City

Sun 2/1

8:00 am-9:38 pm

2 stops12h 38m

Toronto Island

Thu 2/5

12:30 pm-9:59 pm

2 stops10h 29m

$616

Flights are sorted by cheapest round-trip flights first.

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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?

The month of April is, on average, the cheapest month to fly to Region of Ontario from Missouri, with most prices found around $314. If you aren’t able to travel during the month of April, then book flights to Region of Ontario from Missouri during June instead. Flights to Region of Ontario in June, while not as cheap as those in April, still average around $392.

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

According to our data, Tuesday is the cheapest day to fly to Region of Ontario from Missouri. The lowest ticket price found for a Tuesday departure recently was $813. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. Flights from Missouri to Region of Ontario on a Friday will generally be more expensive and average around $982. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

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

According to our data, the cheapest time of day to fly to Region of Ontario is in the afternoon. momondo users have found flights departing from Missouri to Region of Ontario in the afternoon for as low as $887. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights at noon are often more expensive with an average ticket price of $1,183.

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

How far in advance should I book a flight to Region of Ontario?

You are more likely to see cheaper flights to Region of Ontario from Missouri when booking weeks ahead of your departure date. In general, you can expect to find flights to Region of Ontario for around $508 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Region of Ontario from Missouri for as low as $221 on momondo.

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

There are 4 cabin classes 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 13% 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

Best Price Found	$307
Fastest flight time	1h 51m
Direct flights	Mon, Wed, Thu, Fri, Sat and Sun
Airports in Region of Ontario	123 airports

The best one-way flight to Region of Ontario from Missouri in the past 72 hours is $307. The best round-trip flight deal from Missouri to Region of Ontario found on momondo in the last 72 hours is $646.

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

Direct flights go from Missouri to Region of Ontario on Monday, Wednesday, Thursday, Friday, Saturday and Sunday. The only airline offering direct flights is Air Canada.

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

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?
As of December 2025, there are 5 operators available to choose from for flights from Missouri to Ontario.
How old do you have to be to fly from Missouri to Ontario?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Missouri to Ontario.
What documentation or ID do you need to fly to Ontario?
The required travel and health documents for your Ontario trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Ontario. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular plane model from Missouri to Region of Ontario?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from Missouri to Region of Ontario is Embraer 175 (44.79% of total bookings). The next most popular plane models are Canadair (Bombardier) Regional Jet 900 (18.75%), Airbus A330-300 (6.25%), and Boeing 737 MAX 8 (4.17%).

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
United Airlines	PriceFrom $199	Free Cancellation	Rating 7.4 9,115 reviews	Search United Airlines flights
Air Canada	PriceFrom $221	Free Cancellation	Rating 7.1 10,562 reviews	Search Air Canada flights
American Airlines	PriceFrom $270	Free Cancellation	Rating 7.2 11,064 reviews	Search American Airlines flights
WestJet	PriceFrom $525	Free Cancellation	Rating 7.2 3,220 reviews	Search WestJet flights
Delta	PriceFrom $567	Free Cancellation	Rating 7.9 8,014 reviews	Search Delta flights

Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Ontario from Missouri.

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?

Once you have performed a search for Missouri to Ontario flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

If you are not ready to book a flight from Missouri to Ontario now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Ontario and let you know when they change.

An easier way to manage your Region of Ontario trip

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Find better results for your trip to Ontario

Popular cities in Ontario

Flights to Torontofrom $97

Flights to Vancouverfrom $82

Flights to Montrealfrom $164

Flights to Calgaryfrom $158

Flights to Ottawafrom $162

Flights to Halifaxfrom $205

Flights to Winnipegfrom $139

Flights to Québec Cityfrom $245

Flights to Saskatoonfrom $146

Flights to Kelownafrom $140

Flights to St. John'sfrom $238

Flights to Reginafrom $245

Cheap flights from Missouri to Ontario from $115

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Missouri to Ontario departing on 2/4. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Big names and deals

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Filter for what you want

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Find the cheapest flights from Missouri to Ontario

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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

United Airlines flights from Missouri to Region of Ontario

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

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

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

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

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

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

How far in advance should I book a flight to Region of Ontario?

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

There are 4 cabin classes 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 13% on your flight if you consider stops on a Missouri to Region of Ontario flight.

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

American Airlines, Air Canada, and Delta are the most popular carriers operating from Missouri to Ontario

What airlines fly to Region of Ontario?

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

2 flights are operational daily from Missouri to Region of Ontario as of December 2025. The most popular departure time for this route is 4:00PM, with 100% of flights per day taking off in the afternoon.

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

As of December 2025, 14 flights take off from Missouri and land in Region of Ontario each week. The most common flight departure day for this route is Mon, with 14% of weekly flights taking off on this day.

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

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

Best Price Found

Fastest flight time

Direct flights

Airports in Region of Ontario

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

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

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

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

What is the most popular plane model from Missouri to Region of Ontario?

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

Why use momondo?

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

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

How can momondo help me find flights 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?

An easier way to manage your Region of Ontario trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Ontario

Popular cities in Ontario

Popular flights according to clicks in the last 7 days on momondo