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

The flight from Region of Ontario to Missouri depends on which airports you’re departing and arriving from and whether or not you have a layover. If you fly from Toronto (a popular airport in Region of Ontario) to St. Louis (the most popular airport in Missouri), then the flight time is 2h 10m on average. If you fly from Ottawa (another popular airport in Region of Ontario) to St. Louis, then the average flight time is 5h 26m.

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

As of November 2025, there are 12 flights per week flying from Region of Ontario to Missouri. The most common day of the week flights depart is Tue, with 17% of flights taking off on this day.

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

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

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

As of November 2025, there are 1 flights per day flying from Region of Ontario to Missouri. The most common time of day flights depart is 2:00PM, with 81% of flights taking off in the afternoon.

What airlines fly to Missouri?

Air Canada, United Airlines and Delta are the top three most popular airlines that fly to Missouri from Region of Ontario according to our data. Air Canada is the first choice among our users, with 41% of people opting to fly with this airline when traveling to Missouri. Keep in mind that there are 4 different airlines that fly to Missouri on a routine basis, so you have a few additional options to choose from.

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

Prices for flights from Ontario to Missouri were last updated today.

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

The number of operators available for flights from Ontario to Missouri is 5 as of November 2025.

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

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ontario to Missouri.

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

The required travel and health documents for your Missouri 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 Missouri. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$162 Cheap Flights from Ontario to Missouri in 2025/26

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Find the cheapest flights from Ontario to Missouri

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Cheap round-trip flights

Enter your travel dates to find the best prices.

7:10 am - 7:50 amYYZ-STL

25h 40m1 stop

5:11 pm - 2:20 pmSTL-YYZ

20h 09m1 stop

$262Multiple Airlines

Find Deal

Thu, Jan 22 - Sun, Jan 25

7:15 am - 7:50 amYYZ-STL

25h 35m2 stops

5:44 pm - 6:47 amSTL-YYZ

12h 03m1 stop

$288Multiple Airlines

Find Deal

Thu, Jan 22 - Sun, Jan 25

2:15 pm - 7:27 pmYOW-STL

6h 12m1 stop

6:30 am - 2:27 pmSTL-YOW

6h 57m2 stops

$300United Airlines

Find Deal

Fri, Jan 23 - Sun, Jan 25

6:00 am - 11:22 amYOW-MCI

6h 22m1 stop

8:05 am - 2:13 pmMCI-YOW

5h 08m1 stop

$300United Airlines

Find Deal

Sun, Apr 5 - Wed, Apr 8

11:38 am - 6:11 pmYYZ-STL

7h 33m1 stop

10:03 am - 9:29 pmSTL-YYZ

10h 26m1 stop

$312American Airlines

Find Deal

Tue, Feb 24 - Sat, Feb 28

6:00 am - 1:49 pmYYZ-STL

8h 49m1 stop

10:03 am - 9:29 pmSTL-YYZ

10h 26m1 stop

$313American Airlines

Find Deal

Tue, Feb 24 - Sat, Feb 28

2:50 pm - 10:58 pmYOW-STL

9h 08m2 stops

6:30 am - 5:42 pmSTL-YOW

10h 12m2 stops

$353Air Canada

Find Deal

Fri, Jan 23 - Sun, Jan 25

2:00 pm - 3:29 pmYYZ-STL

2h 29mnonstop

4:05 pm - 7:06 pmSTL-YYZ

2h 01mnonstop

$372Air Canada

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Fri, Dec 26 - Tue, Dec 30

12:08 pm - 5:09 pmYYZ-STL

6h 01m1 stop

6:00 am - 1:20 pmSTL-YYZ

6h 20m1 stop

$392Delta

Find Deal

Thu, Nov 20 - Mon, Nov 24

6:10 am - 10:43 amYYZ-STL

5h 33m1 stop

5:17 pm - 11:59 pmSTL-YYZ

5h 42m1 stop

$508Delta

Find Deal

Fri, Nov 14 - Mon, Nov 17

Air Canada flights from Region of Ontario to Missouri

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

Air Canada

Jan 23

YOW2:50 pmOttawa

9h 08m

2 stops

STL10:58 pmLambert-St Louis

Jan 25

STL6:30 amLambert-St Louis

10h 12m

2 stops

YOW5:42 pmOttawa

$353

Find similar

Air Canada

Dec 26

YYZ2:00 pmToronto Pearson Intl

2h 29m

STL3:29 pmLambert-St Louis

Dec 30

STL4:05 pmLambert-St Louis

2h 01m

YYZ7:06 pmToronto Pearson Intl

$372

Find similar

Air Canada

Dec 17

YYZ2:00 pmToronto Pearson Intl

2h 29m

STL3:29 pmLambert-St Louis

Dec 24

STL4:05 pmLambert-St Louis

2h 01m

YYZ7:06 pmToronto Pearson Intl

$373

Find similar

United Airlines flights from Region of Ontario to Missouri

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

United Airlines

Jan 23

YOW2:15 pmOttawa

6h 12m

1 stop

STL7:27 pmLambert-St Louis

Jan 25

STL6:30 amLambert-St Louis

6h 57m

2 stops

YOW2:27 pmOttawa

$300

Find similar

United Airlines

Apr 5

YOW12:00 pmOttawa

8h 31m

2 stops

MCI7:31 pmKansas City

Apr 8

MCI6:00 amKansas City

7h 13m

2 stops

YOW2:13 pmOttawa

$359

Find similar

United Airlines

Apr 5

YOW6:00 amOttawa

9h 13m

2 stops

MCI2:13 pmKansas City

Apr 8

MCI6:00 amKansas City

9h 15m

2 stops

YOW4:15 pmOttawa

$394

Find similar

Fly from

Fly to

Route

Depart

Return

Price

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Thu 1/22

7:10 am-7:50 am

1 stop25h 40m

Lambert-St Louis

Sun 1/25

5:11 pm-2:20 pm

1 stop20h 09m

$262

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Thu 1/22

7:15 am-7:50 am

2 stops25h 35m

Lambert-St Louis

Sun 1/25

5:44 pm-6:47 am

1 stop12h 03m

$288

OttawaSt. Louis

YOW - STL

YOWSTL

Ottawa

Fri 1/23

2:15 pm-7:27 pm

1 stop6h 12m

Lambert-St Louis

Sun 1/25

6:30 am-2:27 pm

2 stops6h 57m

$300

OttawaKansas City

YOW - MCI

YOWMCI

Ottawa

Sun 4/5

6:00 am-11:22 am

1 stop6h 22m

Kansas City

Wed 4/8

8:05 am-2:13 pm

1 stop5h 08m

$300

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Tue 2/24

11:38 am-6:11 pm

1 stop7h 33m

Lambert-St Louis

Sat 2/28

10:03 am-9:29 pm

1 stop10h 26m

$312

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Tue 2/24

6:00 am-1:49 pm

1 stop8h 49m

Lambert-St Louis

Sat 2/28

10:03 am-9:29 pm

1 stop10h 26m

$313

OttawaSt. Louis

YOW - STL

YOWSTL

Ottawa

Fri 1/23

2:50 pm-10:58 pm

2 stops9h 08m

Lambert-St Louis

Sun 1/25

6:30 am-5:42 pm

2 stops10h 12m

$353

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Fri 12/26

2:00 pm-3:29 pm

Nonstop2h 29m

Lambert-St Louis

Tue 12/30

4:05 pm-7:06 pm

Nonstop2h 01m

$372

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Thu 11/20

12:08 pm-5:09 pm

1 stop6h 01m

Lambert-St Louis

Mon 11/24

6:00 am-1:20 pm

1 stop6h 20m

$392

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Fri 11/14

6:10 am-10:43 am

1 stop5h 33m

Lambert-St Louis

Mon 11/17

5:17 pm-11:59 pm

1 stop5h 42m

$508

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

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 Missouri?

In general, June is the cheapest month to fly from Region of Ontario to Missouri. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $372. If you aren’t able to travel to Missouri during the month of June, then flying in August is also cheap. Prices for this month can be found on momondo for an average of $397.

What is the cheapest day to depart on your flight to Missouri?

The cheapest day to depart from Region of Ontario to Missouri is on a Tuesday when prices can be found for as low as $391. Flights from Region of Ontario to Missouri on a Sunday will generally be more expensive and average around $541. 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 Missouri?

According to our data, the cheapest time of day to fly to Missouri is in the morning. momondo users have found flights departing from Region of Ontario to Missouri in the morning for as low as $326. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights to Missouri are more costly at noon, with an average ticket price of $483. Departure times at noon fall within the peak daily travel times, which is why tickets can be more expensive.

What is the cheapest Ontario to Missouri flight route?

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

How far in advance should I book a flight to Missouri?

You are more likely to see cheaper flights to Missouri from Region of Ontario when booking weeks ahead of your departure date. In general, you can expect to find flights to Missouri for around $490 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Missouri from Region of Ontario for as low as $360 on momondo.

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

There are 3 cabin classes available to choose from on Ontario to Missouri 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 Region of Ontario to Missouri flights?

You could potentially save up to 16% on your flight if you consider stops on a Region of Ontario to Missouri flight.

Cheap Region of Ontario to Missouri flight deals and tips

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

Best Price Found	$323
Fastest flight time	2h 29m
Direct flights	Every day
Airports in Missouri	1 airport

The best one-way flight to Missouri from Region of Ontario in the past 72 hours is $323. The best round-trip flight deal from Region of Ontario to Missouri found on momondo in the last 72 hours is $476.

The fastest flight from Region of Ontario to Missouri takes 2h 29m

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

There is 1 airport near Missouri: Lambert-St Louis (STL)

Search flight deals

When did momondo last update prices for flights from Ontario to Missouri?
Prices for flights from Ontario to Missouri were last updated today.
How many operators does momondo search for flights from Ontario to Missouri?
The number of operators available for flights from Ontario to Missouri is 5 as of November 2025.
How old do you have to be to fly from Ontario to Missouri?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ontario to Missouri.
What documentation or ID do you need to fly to Missouri?
The required travel and health documents for your Missouri 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 Missouri. 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 Region of Ontario to Missouri?
momondo data reveals that the most frequently booked plane model on the route from Region of Ontario to Missouri is Canadair (Bombardier) Regional Jet 900, representing 65.13% of all bookings. The subsequent popular models are Embraer 175 at 21.71%, Airbus A319 at 3.95%, and Airbus A320-100/200 at 3.95%.

Best airlines flying from Region of Ontario to Missouri

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

Airline	Rating	Free Cancellation	Price
Air Canada	PriceFrom $324	Free Cancellation	Rating 7.1 10,394 reviews	Search Air Canada flights
American Airlines	PriceFrom $421	Free Cancellation	Rating 7.2 11,036 reviews	Search American Airlines flights
United Airlines	PriceFrom $422	Free Cancellation	Rating 7.4 8,997 reviews	Search United Airlines flights
Delta	PriceFrom $472	Free Cancellation	Rating 7.9 8,001 reviews	Search Delta flights

Why use momondo?

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

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

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

Yes. momondo enables you to select and highlight flights to Missouri from Ontario with this policy.

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

momondo helps you find the best flight between Ontario and Missouri by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

If you are simply researching potential flights to Missouri, momondo offers a useful price alert feature which will track prices for flights to Missouri from Ontario and alert you when they change.

An easier way to manage your Missouri 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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Cheap flights from Ontario to Missouri from $162

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to Missouri departing on 11/24. 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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Air Canada flights from Region of Ontario to Missouri

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United Airlines flights from Region of Ontario to Missouri

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

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

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 Missouri?

What is the cheapest day to depart on your flight to Missouri?

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

What is the cheapest Ontario to Missouri flight route?

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

How far in advance should I book a flight to Missouri?

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

There are 3 cabin classes available to choose from on Ontario to Missouri 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 Region of Ontario to Missouri flights?

You could potentially save up to 16% on your flight if you consider stops on a Region of Ontario to Missouri flight.

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

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

What airlines fly to Missouri?

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

As of November 2025, there are 1 flights per day flying from Region of Ontario to Missouri. The most common time of day flights depart is 2:00PM, with 81% of flights taking off in the afternoon.

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

As of November 2025, there are 12 flights per week flying from Region of Ontario to Missouri. The most common day of the week flights depart is Tue, with 17% of flights taking off on this day.

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

Cheap Region of Ontario to Missouri flight deals and tips

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

Best Price Found

Fastest flight time

Direct flights

Airports in Missouri

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

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

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

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

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

Best airlines flying from Region of Ontario to Missouri

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

Why use momondo?

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

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

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

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

An easier way to manage your Missouri 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 Missouri

Popular cities in Missouri

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