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 44% 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.

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

American Airlines, United 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 day?

1 flights are operational daily from Missouri to Region of Ontario as of February 2026. The most popular departure time for this route is 4:00PM, with 100% of flights per day taking off in the afternoon.

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 4h 38m on average. Toronto Pearson Intl Airport is the most popular airport in Region of Ontario.

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

As of February 2026, 10 flights take off from Missouri and land in Region of Ontario each week. The most common flight departure day for this route is Wed, with 20% of weekly flights taking off on this day.

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 February 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.

$90 Cheap Flights from Missouri to Ontario in 2026

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One-way

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Cheap round-trip flights

Enter your travel dates to find the best prices.

3:42 pm - 11:11 pm

STL

YYZ

6h 29m

1 stop

11:33 am - 10:17 pm

YYZ

STL

11h 44m

1 stop

$228American Airlines

pon., kwi 20 - śr., kwi 22

8:00 am - 2:58 pm

STL

YUL

5h 58m

1 stop

7:29 am - 1:22 pm

YUL

STL

6h 53m

1 stop

$238American Airlines

ndz., kwi 5 - ndz., kwi 12

1:00 pm - 8:51 pm

STL

YOW

6h 51m

1 stop

2:25 pm - 8:05 pm

YOW

STL

6h 40m

1 stop

$358Air Canada

czw., maj 14 - ndz., maj 17

1:00 pm - 8:51 pm

STL

YOW

6h 51m

1 stop

7:00 am - 12:06 pm

YOW

STL

6h 06m

1 stop

$363Air Canada

śr., maj 13 - pon., maj 18

6:15 am - 9:35 pm

MCI

YOW

14h 20m

1 stop

10:44 am - 7:45 pm

YOW

MCI

10h 01m

1 stop

$366United Airlines

pon., kwi 6 - pon., kwi 13

7:00 am - 1:32 pm

STL

YOW

5h 32m

1 stop

5:11 pm - 9:50 pm

YOW

STL

5h 39m

1 stop

$366United Airlines

śr., mar 25 - czw., mar 26

6:40 am - 5:35 pm

STL

YOW

9h 55m

2 stops

12:25 pm - 11:21 pm

YOW

STL

11h 56m

2 stops

$460Delta

śr., maj 13 - pon., maj 18

6:45 am - 5:35 pm

STL

YOW

9h 50m

2 stops

6:55 am - 1:10 pm

YOW

STL

7h 15m

2 stops

$468Delta

czw., maj 14 - ndz., maj 17

6:05 am - 6:20 pm

SGF

YUL

11h 15m

2 stops

7:00 am - 2:53 pm

YUL

SGF

8h 53m

1 stop

$815WestJet

czw., maj 21 - wt., cze 16

3:22 pm - 12:25 am

SGF

YUL

32h 03m

2 stops

6:15 pm - 2:53 pm

YUL

SGF

21h 38m

1 stop

$817WestJet

czw., maj 21 - wt., cze 16

United Airlines flights from Missouri to Region of Ontario

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

United Airlines

Apr 6

MCI6:15 amKansas City

14h 20m

1 stop

YOW9:35 pmOttawa

Apr 13

YOW10:44 amOttawa

10h 01m

1 stop

MCI7:45 pmKansas City

$366

United Airlines

Apr 6

MCI6:15 amKansas City

14h 20m

1 stop

YOW9:35 pmOttawa

Apr 13

YOW5:50 pmOttawa

19h 34m

2 stops

MCI12:24 pmKansas City

$376

United Airlines

Jun 6

MCI5:45 pmKansas City

5h 09m

1 stop

YOW11:54 pmOttawa

Jun 16

YOW5:20 pmOttawa

6h 43m

1 stop

MCI11:03 pmKansas City

$428

WestJet flights from Missouri to Region of Ontario

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

WestJet

Apr 24

STL5:35 pmLambert-St Louis

21h 15m

2 stops

YYZ3:50 pmToronto Pearson Intl

Apr 26

YYZ6:30 amToronto Pearson Intl

17h 43m

1 stop

STL11:13 pmLambert-St Louis

$500

WestJet

Apr 30

STL9:59 amLambert-St Louis

14h 06m

2 stops

YYZ1:05 amToronto Pearson Intl

May 3

YYZ6:35 pmToronto Pearson Intl

14h 55m

2 stops

STL8:30 amLambert-St Louis

$501

WestJet

Jun 19

STL5:45 pmLambert-St Louis

4h 12m

1 stop

YYZ10:57 pmToronto Pearson Intl

Jun 27

YYZ3:55 pmToronto Pearson Intl

5h 36m

1 stop

STL8:31 pmLambert-St Louis

$505

Fly from

Fly to

Route

Depart

Return

Price

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

pon. 4/20

3:42 pm-11:11 pm

1 stop6h 29m

Toronto Pearson Intl

śr. 4/22

11:33 am-10:17 pm

1 stop11h 44m

$228

St. LouisMontreal

STL - YUL

STLYUL

Lambert-St Louis

ndz. 4/5

8:00 am-2:58 pm

1 stop5h 58m

Montreal Pierre Elliott Trudeau Intl

ndz. 4/12

7:29 am-1:22 pm

1 stop6h 53m

$238

St. LouisOttawa

STL - YOW

STLYOW

Lambert-St Louis

czw. 5/14

1:00 pm-8:51 pm

1 stop6h 51m

Ottawa

ndz. 5/17

2:25 pm-8:05 pm

1 stop6h 40m

$358

St. LouisOttawa

STL - YOW

STLYOW

Lambert-St Louis

śr. 5/13

1:00 pm-8:51 pm

1 stop6h 51m

Ottawa

pon. 5/18

7:00 am-12:06 pm

1 stop6h 06m

$363

Kansas CityOttawa

MCI - YOW

MCIYOW

Kansas City

pon. 4/6

6:15 am-9:35 pm

1 stop14h 20m

Ottawa

pon. 4/13

10:44 am-7:45 pm

1 stop10h 01m

$366

St. LouisOttawa

STL - YOW

STLYOW

Lambert-St Louis

śr. 3/25

7:00 am-1:32 pm

1 stop5h 32m

Ottawa

czw. 3/26

5:11 pm-9:50 pm

1 stop5h 39m

$366

St. LouisOttawa

STL - YOW

STLYOW

Lambert-St Louis

śr. 5/13

6:40 am-5:35 pm

2 stops9h 55m

Ottawa

pon. 5/18

12:25 pm-11:21 pm

2 stops11h 56m

$460

St. LouisOttawa

STL - YOW

STLYOW

Lambert-St Louis

czw. 5/14

6:45 am-5:35 pm

2 stops9h 50m

Ottawa

ndz. 5/17

6:55 am-1:10 pm

2 stops7h 15m

$468

SpringfieldMontreal

SGF - YUL

SGFYUL

Springfield-Branson

czw. 5/21

6:05 am-6:20 pm

2 stops11h 15m

Montreal Pierre Elliott Trudeau Intl

wt. 6/16

7:00 am-2:53 pm

1 stop8h 53m

$815

SpringfieldMontreal

SGF - YUL

SGFYUL

Springfield-Branson

czw. 5/21

3:22 pm-12:25 am

2 stops32h 03m

Montreal Pierre Elliott Trudeau Intl

wt. 6/16

6:15 pm-2:53 pm

1 stop21h 38m

$817

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 June is, on average, the cheapest month to fly to Region of Ontario from Missouri, with most prices found around $306. If you aren’t able to travel during the month of June, then book flights to Region of Ontario from Missouri during May instead. Flights to Region of Ontario in May, while not as cheap as those in June, still average around $488.

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 $784. 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 $962. 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 $856. 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 $1,067.

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 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 42% 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	$365
Fastest flight time	1h 51m
Direct flights	Every day
Airports in Region of Ontario	123 airports

The best one-way flight to Region of Ontario from Missouri in the past 72 hours is $365. The best round-trip flight deal from Missouri to Region of Ontario found on momondo in the last 72 hours is $716.

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 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 February 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 Embraer 175 (32.08% of total bookings). The next most popular plane models are Canadair (Bombardier) Regional Jet 900 (23.58%), Airbus A220-300 (10.38%), and Boeing 737 MAX 8 (6.60%).

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 10,734 reviews	Search Air Canada flights
United Airlines	PriceFrom $199	Free Cancellation	Rating 7.4 9,335 reviews	Search United Airlines flights
American Airlines	PriceFrom $270	Free Cancellation	Rating 7.2 11,334 reviews	Search American Airlines flights
Delta	PriceFrom $473	Free Cancellation	Rating 7.9 8,228 reviews	Search Delta flights
WestJet	PriceFrom $653	Free Cancellation	Rating 7.2 3,270 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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Popular cities in Ontario

Flights to Torontofrom $110

Flights to Vancouverfrom $98

Flights to Montrealfrom $172

Flights to Calgaryfrom $173

Flights to Ottawafrom $169

Flights to Halifaxfrom $237

Flights to Winnipegfrom $174

Flights to Québec Cityfrom $305

Flights to Kelownafrom $161

Flights to Saskatoonfrom $213

Flights to St. John'sfrom $302

Flights to Reginafrom $252

Cheap flights from Missouri to Ontario from $90

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 4/10. 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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United Airlines flights from Missouri to Region of Ontario

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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?

What cabin class options are available on Missouri to 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

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

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According to popular flight searches on momondo this year

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