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 Ottawa (a popular airport in Region of Ontario) to Kansas City (the most popular airport in Missouri), then the flight time is 5h 04m on average. If you fly from Toronto (another popular airport in Region of Ontario) to Kansas City, then the average flight time is 6h 25m.

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

As of June 2026, there are 4 flights per day flying from Region of Ontario to Missouri. The most common time of day flights depart is 11:00AM, with 50% of flights taking off at noon.

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

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

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 46% 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.

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

As of June 2026, there are 32 flights per week flying from Region of Ontario to Missouri. The most common day of the week flights depart is Mon, with 19% of flights taking off on this day.

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 4 as of June 2026.

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.

$196 Cheap Flights from Ontario to Missouri in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Ontario to Missouri

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

7:20 am - 2:05 pm

YYZ

STL

7h 45m

1 stop

6:55 am - 5:34 pm

STL

YYZ

9h 39m

1 stop

$354American Airlines

Sat, Jul 18 - Tue, Jul 21

7:17 am - 4:40 pm

YYZ

STL

10h 23m

1 stop

6:55 am - 5:34 pm

STL

YYZ

9h 39m

1 stop

$362American Airlines

Tue, Jul 14 - Wed, Jul 15

3:10 pm - 9:51 pm

YOW

STL

7h 41m

1 stop

1:08 pm - 9:56 pm

STL

YOW

7h 48m

2 stops

$377United Airlines

Sat, Oct 31 - Wed, Nov 4

2:00 pm - 9:13 pm

YOW

STL

8h 13m

2 stops

5:00 am - 2:09 pm

STL

YOW

8h 09m

1 stop

$378United Airlines

Tue, Oct 27 - Tue, Nov 3

10:05 am - 3:26 pm

YOW

STL

6h 21m

1 stop

4:05 pm - 1:40 am

STL

YOW

8h 35m

1 stop

$423Air Canada

Tue, Oct 27 - Fri, Oct 30

7:00 am - 4:29 pm

YUL

MCI

10h 29m

1 stop

1:17 pm - 11:52 pm

MCI

YUL

9h 35m

1 stop

$454Delta

Sat, Jul 11 - Sat, Jul 18

6:00 am - 9:44 am

YUL

MCI

4h 44m

1 stop

12:21 pm - 11:52 pm

MCI

YUL

10h 31m

1 stop

$470Delta

Tue, Jul 7 - Fri, Jul 10

4:55 pm - 6:42 pm

YUL

STL

2h 47mnonstop

12:10 pm - 3:42 pm

STL

YUL

2h 32mnonstop

$482Air Canada

Fri, Jul 24 - Sun, Jul 26

6:47 pm - 11:58 pm

YUL

MCI

6h 11m

1 stop

3:38 pm - 11:52 pm

MCI

YUL

7h 14m

1 stop

$485WestJet

Mon, Jul 27 - Tue, Jul 28

6:47 pm - 11:51 pm

YUL

MCI

6h 04m

1 stop

5:40 am - 5:38 pm

MCI

YUL

10h 58m

1 stop

$486WestJet

Thu, Sep 17 - Mon, Sep 21

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WestJet flights from Region of Ontario to Missouri

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

WestJet

Aug 18

YYZ8:00 amToronto Pearson Intl

9h 44m

2 stops

STL4:44 pmLambert-St Louis

Aug 21

STL8:48 amLambert-St Louis

11h 47m

2 stops

YYZ9:35 pmToronto Pearson Intl

$468

WestJet

Jul 27

YUL6:47 pmMontreal Pierre Elliott Trudeau Intl

6h 11m

1 stop

MCI11:58 pmKansas City

Jul 28

MCI3:38 pmKansas City

7h 14m

1 stop

YUL11:52 pmMontreal Pierre Elliott Trudeau Intl

$485

WestJet

Sep 17

YUL6:47 pmMontreal Pierre Elliott Trudeau Intl

6h 04m

1 stop

MCI11:51 pmKansas City

Sep 21

MCI5:40 amKansas City

10h 58m

1 stop

YUL5:38 pmMontreal Pierre Elliott Trudeau Intl

$486

Delta flights from Region of Ontario to Missouri

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

Delta

Jul 11

YUL7:00 amMontreal Pierre Elliott Trudeau Intl

10h 29m

1 stop

MCI4:29 pmKansas City

Jul 18

MCI1:17 pmKansas City

9h 35m

1 stop

YUL11:52 pmMontreal Pierre Elliott Trudeau Intl

$454

Delta

Jul 11

YUL7:00 amMontreal Pierre Elliott Trudeau Intl

10h 29m

1 stop

MCI4:29 pmKansas City

Jul 18

MCI1:17 pmKansas City

9h 35m

1 stop

YUL11:52 pmMontreal Pierre Elliott Trudeau Intl

$455

Delta

Jul 21

YOW6:55 amOttawa

7h 10m

2 stops

STL1:05 pmLambert-St Louis

Jul 25

STL6:30 amLambert-St Louis

10h 05m

2 stops

YOW5:35 pmOttawa

$468

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Sat 7/18

7:20 am-2:05 pm

1 stop7h 45m

Lambert-St Louis

Tue 7/21

6:55 am-5:34 pm

1 stop9h 39m

$354

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Tue 7/14

7:17 am-4:40 pm

1 stop10h 23m

Lambert-St Louis

Wed 7/15

6:55 am-5:34 pm

1 stop9h 39m

$362

OttawaSt. Louis

YOW - STL

YOWSTL

Ottawa

Sat 10/31

3:10 pm-9:51 pm

1 stop7h 41m

Lambert-St Louis

Wed 11/4

1:08 pm-9:56 pm

2 stops7h 48m

$377

OttawaSt. Louis

YOW - STL

YOWSTL

Ottawa

Tue 10/27

2:00 pm-9:13 pm

2 stops8h 13m

Lambert-St Louis

Tue 11/3

5:00 am-2:09 pm

1 stop8h 09m

$378

OttawaSt. Louis

YOW - STL

YOWSTL

Ottawa

Tue 10/27

10:05 am-3:26 pm

1 stop6h 21m

Lambert-St Louis

Fri 10/30

4:05 pm-1:40 am

1 stop8h 35m

$423

MontrealKansas City

YUL - MCI

YULMCI

Montreal Pierre Elliott Trudeau Intl

Sat 7/11

7:00 am-4:29 pm

1 stop10h 29m

Kansas City

Sat 7/18

1:17 pm-11:52 pm

1 stop9h 35m

$454

MontrealKansas City

YUL - MCI

YULMCI

Montreal Pierre Elliott Trudeau Intl

Tue 7/7

6:00 am-9:44 am

1 stop4h 44m

Kansas City

Fri 7/10

12:21 pm-11:52 pm

1 stop10h 31m

$470

Quickest round-trip

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Fri 7/24

4:55 pm-6:42 pm

Nonstop2h 47m

Lambert-St Louis

Sun 7/26

12:10 pm-3:42 pm

Nonstop2h 32m

$482

MontrealKansas City

YUL - MCI

YULMCI

Montreal Pierre Elliott Trudeau Intl

Mon 7/27

6:47 pm-11:58 pm

1 stop6h 11m

Kansas City

Tue 7/28

3:38 pm-11:52 pm

1 stop7h 14m

$485

MontrealKansas City

YUL - MCI

YULMCI

Montreal Pierre Elliott Trudeau Intl

Thu 9/17

6:47 pm-11:51 pm

1 stop6h 04m

Kansas City

Mon 9/21

5:40 am-5:38 pm

1 stop10h 58m

$486

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 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, December 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 $168. If you aren’t able to travel to Missouri during the month of December, then flying in October is also cheap. Prices for this month can be found on momondo for an average of $175.

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 Sunday when prices can be found for as low as $394. Flights from Region of Ontario to Missouri on a Monday will generally be more expensive and average around $548. 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 afternoon. momondo users have found flights departing from Region of Ontario to Missouri in the afternoon for as low as $405. 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 in the evening, with an average ticket price of $584. Departure times in the evening 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 from Ontario 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 $521 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 $359 on momondo.

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

There are 2 cabin classes available to choose from on Region of 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?

No. A direct flight is the cheapest option for a flight between 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	$324
Fastest flight time	2h 06m
Direct flights	Every day
Airports in Missouri	55 airports

The best one-way flight to Missouri from Region of Ontario in the past 72 hours is $324. The best round-trip flight deal from Region of Ontario to Missouri found on momondo in the last 72 hours is $468.

The fastest flight from Region of Ontario to Missouri takes 2h 06m

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

There are 55 airports in Missouri. From Region of Ontario there are direct flights to Lambert-St Louis (STL).

Search flight deals

Frequently asked questions about flying from Ontario to Missouri

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 4 as of June 2026.
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 57.86% of all bookings. The subsequent popular models are Airbus A220-300 at 29.29%, Embraer 175 at 9.29%, and Boeing 737 MAX 8 at 1.43%.

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 $256	Free Cancellation	Rating 7.1 11,269 reviews	Search Air Canada flights
United Airlines	PriceFrom $428	Free Cancellation	Rating 7.4 9,901 reviews	Search United Airlines flights
Delta	PriceFrom $443	Free Cancellation	Rating 7.8 8,455 reviews	Search Delta flights
WestJet	PriceFrom $530	Free Cancellation	Rating 7.2 3,385 reviews	Search WestJet 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

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Popular cities in Missouri

Flights to New Yorkfrom $77

Flights to Los Angelesfrom $56

Flights to Orlandofrom $62

Flights to Miamifrom $79

Flights to Chicagofrom $62

Flights to San Franciscofrom $50

Flights to Las Vegasfrom $49

Flights to Washington, D.C.from $55

Flights to Bostonfrom $61

Flights to Atlantafrom $56

Flights to Fort Lauderdalefrom $58

Flights to Dallasfrom $105

Cheap flights from Ontario to Missouri from $196

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 9/16. 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 Region of Ontario to Missouri

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

Delta flights from Region of Ontario to Missouri

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

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See travel insights to Missouri from

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

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?

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

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

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

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

What airlines fly to Missouri?

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

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

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

Frequently asked questions about flying from 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?

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

Region of Ontario flight routes

According to popular flight searches on momondo this year

Missouri flight routes

According to popular flight searches on momondo this year

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