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

6 flights are operational daily from Missouri to Region of Ontario as of May 2026. The most popular departure time for this route is 7:00AM, with 50% of flights per day taking off at noon.

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 49% 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.

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

As of May 2026, 42 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.

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

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

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 Springfield to Toronto Pearson Intl Airport is 4h 24m on average. Toronto Pearson Intl Airport is the most popular airport in Region of 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?

As of May 2026, 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.

$181 Cheap Flights from Missouri to Ontario in 2026

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Cheap round-trip flights

Enter your travel dates to find the best prices.

7:03 am - 5:44 pm

STL

YYZ

9h 41m

1 stop

1:15 pm - 12:16 am

YYZ

STL

12h 01m

1 stop

$375American Airlines

Wed, Jun 17 - Wed, Jun 24

9:09 am - 5:44 pm

STL

YYZ

7h 35m

1 stop

3:13 pm - 12:16 am

YYZ

STL

10h 03m

1 stop

$389American Airlines

Wed, Jun 17 - Wed, Jun 24

8:00 am - 1:59 pm

STL

YOW

4h 59m

1 stop

6:25 am - 3:43 pm

YOW

STL

10h 18m

1 stop

$409United Airlines

Sat, Sep 26 - Sat, Oct 3

8:00 am - 5:16 pm

STL

YOW

8h 16m

1 stop

6:00 am - 3:43 pm

YOW

STL

10h 43m

2 stops

$418United Airlines

Sat, Sep 26 - Sat, Oct 3

8:55 am - 5:10 pm

STL

YOW

7h 15m

1 stop

9:00 am - 2:02 pm

YOW

STL

6h 02m

1 stop

$450Air Canada

Fri, Aug 7 - Sun, Aug 9

12:10 pm - 10:10 pm

STL

YOW

9h 00m

1 stop

9:00 am - 2:02 pm

YOW

STL

6h 02m

1 stop

$451Air Canada

Fri, Aug 7 - Sun, Aug 9

6:40 am - 5:35 pm

STL

YOW

9h 55m

2 stops

12:25 pm - 10:28 pm

YOW

STL

11h 03m

2 stops

$513Delta

Sat, Sep 26 - Sat, Oct 3

5:06 pm - 7:18 pm

STL

YUL

25h 12m

2 stops

12:47 pm - 9:31 am

YUL

STL

21h 44m

1 stop

$550Multiple Airlines

Sat, Jul 4 - Sat, Jul 11

5:06 pm - 2:08 pm

STL

YUL

20h 02m

2 stops

12:47 pm - 9:31 am

YUL

STL

21h 44m

1 stop

$553Multiple Airlines

Sat, Jul 4 - Sat, Jul 11

6:30 am - 6:53 pm

MCI

YUL

11h 23m

2 stops

9:30 am - 5:34 pm

YUL

MCI

9h 04m

1 stop

$672Delta

Wed, Sep 23 - Wed, Sep 30

WestJet flights from Missouri to Region of Ontario

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

WestJet

Jul 8

STL1:22 pmLambert-St Louis

7h 39m

1 stop

YYZ10:01 pmToronto Pearson Intl

Jul 15

YYZ6:00 amToronto Pearson Intl

4h 43m

1 stop

STL9:43 amLambert-St Louis

$539

WestJet

Jul 13

STL6:04 pmLambert-St Louis

3h 58m

1 stop

YYZ11:02 pmToronto Pearson Intl

Jul 20

YYZ6:34 pmToronto Pearson Intl

6h 19m

1 stop

STL11:53 pmLambert-St Louis

$552

WestJet

Jul 6

STL10:20 amLambert-St Louis

3h 59m

1 stop

YYZ3:19 pmToronto Pearson Intl

Jul 10

YYZ6:30 amToronto Pearson Intl

4h 58m

1 stop

STL10:28 amLambert-St Louis

$553

American Airlines flights from Missouri to Region of Ontario

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

American Airlines

Jun 17

STL7:03 amLambert-St Louis

9h 41m

1 stop

YYZ5:44 pmToronto Pearson Intl

Jun 24

YYZ1:15 pmToronto Pearson Intl

12h 01m

1 stop

STL12:16 amLambert-St Louis

$375

American Airlines

Jun 17

STL9:09 amLambert-St Louis

7h 35m

1 stop

YYZ5:44 pmToronto Pearson Intl

Jun 24

YYZ3:13 pmToronto Pearson Intl

10h 03m

1 stop

STL12:16 amLambert-St Louis

$389

American Airlines

Jun 17

STL9:09 amLambert-St Louis

7h 35m

1 stop

YYZ5:44 pmToronto Pearson Intl

Jun 24

YYZ7:25 amToronto Pearson Intl

7h 37m

1 stop

STL2:02 pmLambert-St Louis

$410

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Wed 6/17

7:03 am-5:44 pm

1 stop9h 41m

Toronto Pearson Intl

Wed 6/24

1:15 pm-12:16 am

1 stop12h 01m

$375

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Wed 6/17

9:09 am-5:44 pm

1 stop7h 35m

Toronto Pearson Intl

Wed 6/24

3:13 pm-12:16 am

1 stop10h 03m

$389

St. LouisOttawa

STL - YOW

STLYOW

Lambert-St Louis

Sat 9/26

8:00 am-1:59 pm

1 stop4h 59m

Ottawa

Sat 10/3

6:25 am-3:43 pm

1 stop10h 18m

$409

St. LouisOttawa

STL - YOW

STLYOW

Lambert-St Louis

Sat 9/26

8:00 am-5:16 pm

1 stop8h 16m

Ottawa

Sat 10/3

6:00 am-3:43 pm

2 stops10h 43m

$418

Quickest round-trip

St. LouisOttawa

STL - YOW

STLYOW

Lambert-St Louis

Fri 8/7

8:55 am-5:10 pm

1 stop7h 15m

Ottawa

Sun 8/9

9:00 am-2:02 pm

1 stop6h 02m

$450

St. LouisOttawa

STL - YOW

STLYOW

Lambert-St Louis

Fri 8/7

12:10 pm-10:10 pm

1 stop9h 00m

Ottawa

Sun 8/9

9:00 am-2:02 pm

1 stop6h 02m

$451

St. LouisOttawa

STL - YOW

STLYOW

Lambert-St Louis

Sat 9/26

6:40 am-5:35 pm

2 stops9h 55m

Ottawa

Sat 10/3

12:25 pm-10:28 pm

2 stops11h 03m

$513

St. LouisMontreal

STL - YUL

STLYUL

Lambert-St Louis

Sat 7/4

5:06 pm-7:18 pm

2 stops25h 12m

Montreal Pierre Elliott Trudeau Intl

Sat 7/11

12:47 pm-9:31 am

1 stop21h 44m

$550

St. LouisMontreal

STL - YUL

STLYUL

Lambert-St Louis

Sat 7/4

5:06 pm-2:08 pm

2 stops20h 02m

Montreal Pierre Elliott Trudeau Intl

Sat 7/11

12:47 pm-9:31 am

1 stop21h 44m

$553

Kansas CityMontreal

MCI - YUL

MCIYUL

Kansas City

Wed 9/23

6:30 am-6:53 pm

2 stops11h 23m

Montreal Pierre Elliott Trudeau Intl

Wed 9/30

9:30 am-5:34 pm

1 stop9h 04m

$672

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?

The month of August is, on average, the cheapest month to fly to Region of Ontario from Missouri, with most prices found around $98. If you aren’t able to travel during the month of August, then book flights to Region of Ontario from Missouri during July instead. Flights to Region of Ontario in July, while not as cheap as those in August, still average around $139.

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 at noon. momondo users have found flights departing from Missouri to Region of Ontario at noon for as low as $939. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights in the morning are often more expensive with an average ticket price of $1,302.

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 are 4 cabin classes 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.

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

You could potentially save up to 32% 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	$402
Fastest flight time	1h 51m
Direct flights	Every day
Airports in Region of Ontario	125 airports

The best one-way flight to Region of Ontario from Missouri in the past 72 hours is $402. The best round-trip flight deal from Missouri to Region of Ontario found on momondo in the last 72 hours is $512.

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 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?
As of May 2026, 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 (32.52% of total bookings). The next most popular plane models are Airbus A220-300 (22.82%), Boeing 787-8 Dreamliner (15.05%), and Embraer 175 (11.17%).

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
Air Canada	PriceFrom $139	Free Cancellation	Rating 7.1 11,083 reviews	Search Air Canada flights
United Airlines	PriceFrom $218	Free Cancellation	Rating 7.4 9,749 reviews	Search United Airlines flights
Delta	PriceFrom $260	Free Cancellation	Rating 7.9 8,429 reviews	Search Delta flights
American Airlines	PriceFrom $270	Free Cancellation	Rating 7.1 11,629 reviews	Search American Airlines flights
WestJet	PriceFrom $591	Free Cancellation	Rating 7.2 3,345 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

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Popular cities in Ontario

Flights to Torontofrom $178

Flights to Vancouverfrom $171

Flights to Montrealfrom $212

Flights to Calgaryfrom $209

Flights to Ottawafrom $240

Flights to Halifaxfrom $253

Flights to Winnipegfrom $288

Flights to Québec Cityfrom $331

Flights to Saskatoonfrom $250

Flights to Kelownafrom $268

Flights to St. John'sfrom $367

Flights to Reginafrom $358

Cheap flights from Missouri to Ontario from $181

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 6/29. 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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WestJet flights from Missouri to Region of Ontario

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

American Airlines flights from Missouri to Region of Ontario

Our best American 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 time of day to depart on your flight to Region of Ontario?

What is the cheapest Missouri to Ontario flight route?

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

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

What is the cheapest airline that flies 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?

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

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

Frequently asked questions about flying from Missouri to 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?

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

Missouri flight routes

According to popular flight searches on momondo this year

Region of Ontario flight routes

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