Latest deals
Insights
FAQs
Reviews
Price Alerts

Cheap flights from Missouri to Ontario from C$ 134

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 9/2. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names, great deals

Big names, great deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Early arrival? Instantly customize your results

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Missouri to Ontario

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
9:45 p.m. - 7:36 p.m.
STL
-
YYZ
20h 51m2 stops
Multiple Airlines Logo
7:10 a.m. - 11:33 p.m.
YYZ
-
STL
17h 23m1 stop
C$ 333Multiple Airlines
Mon, 2 Feb - Mon, 9 Feb
Multiple Airlines Logo
11:26 a.m. - 11:20 p.m.
MCI
-
YYZ
10h 54m1 stop
Multiple Airlines Logo
1:30 p.m. - 11:33 p.m.
YYZ
-
MCI
35h 03m2 stops
C$ 335Multiple Airlines
Mon, 26 Jan - Mon, 2 Feb
Multiple Airlines Logo
11:26 a.m. - 11:20 p.m.
MCI
-
YYZ
10h 54m1 stop
Multiple Airlines Logo
10:15 p.m. - 11:33 p.m.
YYZ
-
MCI
50h 18m2 stops
C$ 344Multiple Airlines
Thu, 22 Jan - Sun, 25 Jan
American Airlines Logo
6:46 p.m. - 3:08 p.m.
STL
-
YUL
19h 22m1 stop
American Airlines Logo
3:55 p.m. - 9:29 a.m.
YUL
-
STL
18h 34m1 stop
C$ 459American Airlines
Tue, 10 Feb - Tue, 17 Feb
American Airlines Logo
8:31 a.m. - 10:44 p.m.
STL
-
YUL
13h 13m2 stops
American Airlines Logo
3:55 p.m. - 9:29 a.m.
YUL
-
STL
18h 34m1 stop
C$ 473American Airlines
Tue, 10 Feb - Tue, 17 Feb
United Airlines Logo
8:00 a.m. - 9:18 p.m.
MCI
-
YOW
12h 18m1 stop
United Airlines Logo
2:15 p.m. - 7:56 p.m.
YOW
-
MCI
6h 41m1 stop
C$ 476United Airlines
Mon, 2 Feb - Fri, 6 Feb
United Airlines Logo
8:00 a.m. - 9:56 p.m.
MCI
-
YOW
12h 56m2 stops
United Airlines Logo
5:11 p.m. - 9:59 p.m.
YOW
-
MCI
5h 48m1 stop
C$ 489United Airlines
Mon, 2 Feb - Fri, 6 Feb
Alaska Airlines Logo
2:45 p.m. - 3:35 p.m.
MCI
-
YYZ
23h 50m1 stop
Alaska Airlines Logo
4:45 p.m. - 3:05 p.m.
YYZ
-
MCI
23h 20m2 stops
C$ 599Alaska Airlines
Thu, 29 Jan - Thu, 5 Feb
Air Canada Logo
4:05 p.m. - 9:52 p.m.
STL
-
YUL
4h 47m1 stop
Air Canada Logo
8:50 a.m. - 3:29 p.m.
YUL
-
STL
7h 39m2 stops
C$ 749Air Canada
Sat, 17 Jan - Sun, 18 Jan
Air Canada Logo
4:05 p.m. - 9:21 p.m.
STL
-
YXU
4h 16m1 stop
Air Canada Logo
9:25 a.m. - 3:29 p.m.
YXU
-
STL
7h 04m1 stop
C$ 1,123Air Canada
Mon, 2 Mar - Wed, 4 Mar

American Airlines flights from Missouri to Region of Ontario

Our best American Airlines deals on Missouri to Region of Ontario flight tickets
American Airlines
10 Feb
STL6:46 p.m.Lambert-St Louis
19h 22m
1 stop
YUL3:08 p.m.Montreal Pierre Elliott Trudeau Intl
17 Feb
YUL3:55 p.m.Montreal Pierre Elliott Trudeau Intl
18h 34m
1 stop
STL9:29 a.m.Lambert-St Louis
C$ 459
Find similar
American Airlines
10 Feb
STL8:31 a.m.Lambert-St Louis
13h 13m
2 stops
YUL10:44 p.m.Montreal Pierre Elliott Trudeau Intl
17 Feb
YUL3:55 p.m.Montreal Pierre Elliott Trudeau Intl
18h 34m
1 stop
STL9:29 a.m.Lambert-St Louis
C$ 473
Find similar
American Airlines
14 Feb
STL10:04 a.m.Lambert-St Louis
10h 25m
1 stop
YYZ9:29 p.m.Toronto Pearson Intl
21 Feb
YYZ11:38 a.m.Toronto Pearson Intl
7h 24m
1 stop
STL6:02 p.m.Lambert-St Louis
C$ 500
Find similar

WestJet flights from Missouri to Region of Ontario

Our best WestJet deals on Missouri to Region of Ontario flight tickets
WestJet
6 Mar
STL6:10 a.m.Lambert-St Louis
25h 24m
2 stops
YYZ8:34 a.m.Toronto Pearson Intl
8 Mar
YYZ6:20 a.m.Toronto Pearson Intl
15h 22m
1 stop
STL8:42 p.m.Lambert-St Louis
C$ 728
Find similar
WestJet
17 Jun
MCI5:40 p.m.Kansas City
15h 47m
2 stops
YYZ10:27 a.m.Toronto Pearson Intl
18 Jun
YYZ2:15 p.m.Toronto Pearson Intl
20h 23m
1 stop
MCI9:38 a.m.Kansas City
C$ 899
Find similar
WestJet
17 Jun
MCI3:36 p.m.Kansas City
5h 24m
1 stop
YYZ10:00 p.m.Toronto Pearson Intl
18 Jun
YYZ6:00 p.m.Toronto Pearson Intl
5h 25m
1 stop
MCI10:25 p.m.Kansas City
C$ 969
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Missouri to Region of Ontario that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 96,600 searches. Data last updated 28 December 2025.
Use the filters below to find and compare flights from Missouri to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Mon 2/2

9:45 p.m.-7:36 p.m.

2 stops20h 51m

Toronto Pearson Intl

Mon 9/2

7:10 a.m.-11:33 p.m.

1 stop17h 23m

C$ 333

Kansas CityToronto

MCI - YYZ

MCIYYZ

Kansas City

Mon 26/1

11:26 a.m.-11:20 p.m.

1 stop10h 54m

Toronto Pearson Intl

Mon 2/2

1:30 p.m.-11:33 p.m.

2 stops35h 03m

C$ 335

Kansas CityToronto

MCI - YYZ

MCIYYZ

Kansas City

Thu 22/1

11:26 a.m.-11:20 p.m.

1 stop10h 54m

Toronto Pearson Intl

Sun 25/1

10:15 p.m.-11:33 p.m.

2 stops50h 18m

C$ 344

St. LouisMontreal

STL - YUL

STLYUL

Lambert-St Louis

Tue 10/2

6:46 p.m.-3:08 p.m.

1 stop19h 22m

Montreal Pierre Elliott Trudeau Intl

Tue 17/2

3:55 p.m.-9:29 a.m.

1 stop18h 34m

C$ 459

St. LouisMontreal

STL - YUL

STLYUL

Lambert-St Louis

Tue 10/2

8:31 a.m.-10:44 p.m.

2 stops13h 13m

Montreal Pierre Elliott Trudeau Intl

Tue 17/2

3:55 p.m.-9:29 a.m.

1 stop18h 34m

C$ 473

Kansas CityOttawa

MCI - YOW

MCIYOW

Kansas City

Mon 2/2

8:00 a.m.-9:18 p.m.

1 stop12h 18m

Ottawa

Fri 6/2

2:15 p.m.-7:56 p.m.

1 stop6h 41m

C$ 476

Kansas CityOttawa

MCI - YOW

MCIYOW

Kansas City

Mon 2/2

8:00 a.m.-9:56 p.m.

2 stops12h 56m

Ottawa

Fri 6/2

5:11 p.m.-9:59 p.m.

1 stop5h 48m

C$ 489

Kansas CityToronto

MCI - YYZ

MCIYYZ

Kansas City

Thu 29/1

2:45 p.m.-3:35 p.m.

1 stop23h 50m

Toronto Pearson Intl

Thu 5/2

4:45 p.m.-3:05 p.m.

2 stops23h 20m

C$ 599

St. LouisMontreal

STL - YUL

STLYUL

Lambert-St Louis

Sat 17/1

4:05 p.m.-9:52 p.m.

1 stop4h 47m

Montreal Pierre Elliott Trudeau Intl

Sun 18/1

8:50 a.m.-3:29 p.m.

2 stops7h 39m

C$ 749

St. LouisLondon

STL - YXU

STLYXU

Lambert-St Louis

Mon 2/3

4:05 p.m.-9:21 p.m.

1 stop4h 16m

London

Wed 4/3

9:25 a.m.-3:29 p.m.

1 stop7h 04m

C$ 1,123

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

See travel insights to Ontario from

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?

In general, February is the cheapest month to fly from Missouri to Region of Ontario. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around C$ 709. If you are unable to visit Region of Ontario during the month of February, then departing from Missouri during the month June is also very affordable. Most momondo users find prices during this month for around C$ 917.

What is the cheapest day to depart on your flight to Region of Ontario?

The cheapest day to depart from Missouri to Region of Ontario is on a Friday. Travellers who choose to depart for Region of Ontario on a Friday will often find tickets for as low as C$ 574. The most expensive day to fly to Region of Ontario is Wednesday, with ticket prices averaging around C$ 889.

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

Our most recent data shows that the best time of day to fly to Region of Ontario is at noon. Flights from Missouri to Region of Ontario during this time can be as low as C$ 586. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are C$ 759 on average. Flights to Region of Ontario from Missouri in the morning are generally more expensive because this time of day is more convenient for travellers’ schedules.

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 is only 1 cabin class 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 10% 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

Fastest flight time

1h 51m

Direct flights

Every day

Airports in Region of Ontario

123 airports
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?

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

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Missouri to Ontario.

  • What documentation or ID do you need to fly to Ontario?

    The travel and health documents required for your trip to Ontario can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Ontario. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • 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
Airline
Rating
Free Cancellation
Price
Air CanadaPriceFrom C$ 298Free CancellationRating
7.1
10,562 reviews
Search Air Canada flights

Why use momondo?

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

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

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?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight 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?

Of course. momondo tracks the price of Missouri to Ontario flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Tue 27/1
Tue 3/2
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Ontario

Popular Cities in Ontario

Popular flights according to clicks in the last 7 days on momondo
Flights to Torontofrom C$ 96
Flights to Vancouverfrom C$ 60
Flights to Montrealfrom C$ 59
Flights to Calgaryfrom C$ 75
Flights to Ottawafrom C$ 197
Flights to Winnipegfrom C$ 128
Flights to Halifaxfrom C$ 57
Flights to Kelownafrom C$ 85
Flights to Saskatoonfrom C$ 202
Flights to Reginafrom C$ 171
Flights to St. John'sfrom C$ 212
Flights to Québec Cityfrom C$ 312