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

7 flights are operational daily from Missouri to Region of Ontario as of September 2025. The most popular departure time for this route is 9:00AM, with 60% of flights per day taking off in the afternoon.

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

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

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

As of September 2025, 53 flights take off from Missouri and land in Region of Ontario each week. The most common flight departure day for this route is Tue, with 15% 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 55m on average, while flying from Springfield to Toronto Pearson Intl Airport is 4h 47m on average. Toronto Pearson Intl Airport is the most popular airport in Region of Ontario.

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 45% 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 September 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.

$95 Cheap Flights from Missouri to Ontario in 2025/26

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Find the cheapest flights from Missouri to Ontario

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

10:57 am - 2:40 pmSTL-YYZ

26h 43m1 stop

8:00 pm - 9:40 amYYZ-STL

14h 40m1 stop

$285Multiple Airlines

Find Deal

Thu, Oct 30 - Sun, Nov 2

10:57 am - 2:40 pmSTL-YYZ

26h 43m1 stop

8:00 pm - 9:40 amYYZ-STL

14h 40m1 stop

$289Multiple Airlines

Find Deal

Thu, Oct 30 - Sun, Nov 2

8:00 pm - 11:40 amSTL-YUL

14h 40m1 stop

5:24 pm - 9:09 amYUL-STL

16h 45m1 stop

$419American Airlines

Find Deal

Sat, Oct 18 - Fri, Oct 24

4:05 pm - 7:06 pmSTL-YYZ

2h 01mnonstop

2:00 pm - 3:29 pmYYZ-STL

2h 29mnonstop

$421Air Canada

Find Deal

Sat, Nov 1 - Sat, Nov 8

6:00 am - 4:39 pmSTL-YUL

9h 39m1 stop

7:50 am - 6:11 pmYUL-STL

11h 21m2 stops

$429American Airlines

Find Deal

Sat, Oct 18 - Sat, Oct 25

6:43 pm - 7:40 pmSTL-YUL

23h 57m1 stop

9:15 am - 10:45 pmYUL-STL

14h 30m2 stops

$531United Airlines

Find Deal

Sat, Nov 1 - Sat, Nov 8

10:00 am - 8:45 amSTL-YUL

21h 45m2 stops

9:15 am - 10:45 pmYUL-STL

14h 30m2 stops

$537United Airlines

Find Deal

Sat, Nov 1 - Sat, Nov 8

9:31 am - 6:40 pmSTL-YUL

8h 09m1 stop

9:26 am - 8:46 pmYUL-STL

12h 20m2 stops

$569Delta

Find Deal

Tue, Nov 4 - Tue, Nov 18

1:35 pm - 8:37 amSTL-YUL

18h 02m1 stop

9:28 am - 8:08 pmYUL-STL

11h 40m1 stop

$576Delta

Find Deal

Sat, Oct 11 - Wed, Oct 15

11:32 am - 10:18 pmMCI-YOW

9h 46m2 stops

10:50 am - 9:35 pmYOW-MCI

11h 45m2 stops

$868Air Canada

Find Deal

Tue, Mar 3 - Wed, Mar 4

United Airlines flights from Missouri to Region of Ontario

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

United Airlines

Nov 1

STL6:43 pmLambert-St Louis

23h 57m

1 stop

YUL7:40 pmMontreal Pierre Elliott Trudeau Intl

Nov 8

YUL9:15 amMontreal Pierre Elliott Trudeau Intl

14h 30m

2 stops

STL10:45 pmLambert-St Louis

$531

Find similar

United Airlines

Nov 1

STL10:00 amLambert-St Louis

21h 45m

2 stops

YUL8:45 amMontreal Pierre Elliott Trudeau Intl

Nov 8

YUL9:15 amMontreal Pierre Elliott Trudeau Intl

14h 30m

2 stops

STL10:45 pmLambert-St Louis

$537

Find similar

United Airlines

Nov 25

JLN7:45 amJoplin

5h 16m

1 stop

YYZ2:01 pmToronto Pearson Intl

Dec 1

YYZ5:30 pmToronto Pearson Intl

7h 00m

1 stop

JLN11:30 pmJoplin

$542

Find similar

WestJet flights from Missouri to Region of Ontario

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

WestJet

Sep 24

MCI3:40 pmKansas City

14h 12m

2 stops

YYZ6:52 amToronto Pearson Intl

Sep 26

YYZ6:15 amToronto Pearson Intl

18h 29m

1 stop

MCI11:44 pmKansas City

$658

Find similar

WestJet

Oct 1

MCI6:00 pmKansas City

4h 55m

1 stop

YYZ11:55 pmToronto Pearson Intl

Oct 7

YYZ1:20 pmToronto Pearson Intl

6h 42m

1 stop

MCI7:02 pmKansas City

$731

Find similar

WestJet

Oct 1

MCI6:37 amKansas City

3h 43m

1 stop

YYZ11:20 amToronto Pearson Intl

Oct 6

YYZ6:09 pmToronto Pearson Intl

3h 54m

1 stop

MCI9:03 pmKansas City

$770

Find similar

Fly from

Fly to

Route

Depart

Return

Price

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Thu 10/30

10:57 am-2:40 pm

1 stop26h 43m

Toronto Pearson Intl

Sun 11/2

8:00 pm-9:40 am

1 stop14h 40m

$285

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Thu 10/30

10:57 am-2:40 pm

1 stop26h 43m

Toronto Pearson Intl

Sun 11/2

8:00 pm-9:40 am

1 stop14h 40m

$289

St. LouisMontreal

STL - YUL

STLYUL

Lambert-St Louis

Sat 10/18

8:00 pm-11:40 am

1 stop14h 40m

Montreal Pierre Elliott Trudeau Intl

Fri 10/24

5:24 pm-9:09 am

1 stop16h 45m

$419

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Sat 11/1

4:05 pm-7:06 pm

Nonstop2h 01m

Toronto Pearson Intl

Sat 11/8

2:00 pm-3:29 pm

Nonstop2h 29m

$421

St. LouisMontreal

STL - YUL

STLYUL

Lambert-St Louis

Sat 10/18

6:00 am-4:39 pm

1 stop9h 39m

Montreal Pierre Elliott Trudeau Intl

Sat 10/25

7:50 am-6:11 pm

2 stops11h 21m

$429

St. LouisMontreal

STL - YUL

STLYUL

Lambert-St Louis

Sat 11/1

6:43 pm-7:40 pm

1 stop23h 57m

Montreal Pierre Elliott Trudeau Intl

Sat 11/8

9:15 am-10:45 pm

2 stops14h 30m

$531

St. LouisMontreal

STL - YUL

STLYUL

Lambert-St Louis

Sat 11/1

10:00 am-8:45 am

2 stops21h 45m

Montreal Pierre Elliott Trudeau Intl

Sat 11/8

9:15 am-10:45 pm

2 stops14h 30m

$537

St. LouisMontreal

STL - YUL

STLYUL

Lambert-St Louis

Tue 11/4

9:31 am-6:40 pm

1 stop8h 09m

Montreal Pierre Elliott Trudeau Intl

Tue 11/18

9:26 am-8:46 pm

2 stops12h 20m

$569

St. LouisMontreal

STL - YUL

STLYUL

Lambert-St Louis

Sat 10/11

1:35 pm-8:37 am

1 stop18h 02m

Montreal Pierre Elliott Trudeau Intl

Wed 10/15

9:28 am-8:08 pm

1 stop11h 40m

$576

Kansas CityOttawa

MCI - YOW

MCIYOW

Kansas City

Tue 3/3

11:32 am-10:18 pm

2 stops9h 46m

Ottawa

Wed 3/4

10:50 am-9:35 pm

2 stops11h 45m

$868

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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 November is, on average, the cheapest month to fly to Region of Ontario from Missouri, with most prices found around $263. If you aren’t able to travel during the month of November, then book flights to Region of Ontario from Missouri during January instead. Flights to Region of Ontario in January, while not as cheap as those in November, still average around $286.

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 $864. 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 $985. 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 $896. 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 $1,180.

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 $468 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 26% 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	$297
Fastest flight time	1h 55m
Direct flights	Every day
Airports in Region of Ontario	2 airports

The best one-way flight to Region of Ontario from Missouri in the past 72 hours is $297. The best round-trip flight deal from Missouri to Region of Ontario found on momondo in the last 72 hours is $672.

The fastest flight from Missouri to Region of Ontario takes 1h 55m

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

There are 2 airports near Region of Ontario: 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 September 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 Canadair (Bombardier) Regional Jet 900 (71.14% of total bookings). The next most popular plane models are Embraer 175 (6.04%), Airbus A330-300 (5.37%), and Boeing 737 MAX 8 (2.68%).

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 $214	Free Cancellation	Rating 7.4 8,926 reviews	Search United Airlines flights
Air Canada	PriceFrom $220	Free Cancellation	Rating 7.1 10,000 reviews	Search Air Canada flights
American Airlines	PriceFrom $330	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights
Delta	PriceFrom $495	Free Cancellation	Rating 7.9 7,964 reviews	Search Delta flights
WestJet	PriceFrom $497	Free Cancellation	Rating 7.2 3,095 reviews	Search WestJet 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

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.

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Find better results for your trip to Ontario

Popular cities in Ontario

Flights to Torontofrom $98

Flights to Vancouverfrom $85

Flights to Montrealfrom $186

Flights to Calgaryfrom $132

Flights to Ottawafrom $190

Flights to Halifaxfrom $188

Flights to Winnipegfrom $157

Flights to Québec Cityfrom $177

Flights to Saskatoonfrom $117

Flights to Kelownafrom $156

Flights to St. John'sfrom $244

Flights to Reginafrom $206

Cheap flights from Missouri to Ontario from $95

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 10/31. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

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Find the cheapest flights from Missouri to Ontario

Cheap round-trip flights

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United Airlines flights from Missouri to Region of Ontario

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

WestJet flights from Missouri to Region of Ontario

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

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Use the filters below to find and compare flights from Missouri to Ontario that are best for you.

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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

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 26% 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 and Air Canada 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?

7 flights are operational daily from Missouri to Region of Ontario as of September 2025. The most popular departure time for this route is 9:00AM, with 60% 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 September 2025, 53 flights take off from Missouri and land in Region of Ontario each week. The most common flight departure day for this route is Tue, with 15% 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