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Cheap flights from Missouri to Ontario from C$ 167

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/5. Fares are subject to change and may not be available on all flights or dates of travel.
STL — YYZ
2 Apr — 9 Apr1
1 adult

Cheap flight deals from Missouri to Ontario

Keep the following information in mind while searching for Missouri to Ontario flight deals. Data was last updated 28 March 2025.

Round-trip from

C$ 443

One-way from

C$ 167

Good round-trip deal

C$ 243 or less

Good one-way deal

C$ 238 or less
30/5-1/6
  • 30/5-1/6
  • 2 total stops
  • 26h 16m total
  • Missouri to Ontario
Search Deals
9/5
  • 9/5
  • 1 total stop
  • 9h 17m total
  • Missouri to Ontario
Search Deals
Price to beat on a round-trip flight from Missouri to Ontario.
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Price to beat on a one-way flight from Missouri to Ontario.
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Find flight deals from Missouri to Ontario

Cheapest flights from Missouri to Ontario
Explore the most affordable flight options available from Missouri to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 28 March 2025.

Fri 30/55:35 a.m.MCI - YYZ
1 stop7h 20mMultiple Airlines
Sun 1/64:00 p.m.YYZ - MCI
1 stop18h 56mMultiple Airlines
Deal found 27/3C$ 443
Fri 4/44:57 p.m.STL - YYZ
1 stop19h 58mMultiple Airlines
Tue 8/48:15 p.m.YYZ - STL
1 stop28h 31mMultiple Airlines
Deal found 27/3C$ 459
Thu 17/44:57 p.m.STL - YUL
1 stop20h 13mMultiple Airlines
Sun 20/47:15 a.m.YUL - STL
1 stop11h 00mMultiple Airlines
Deal found 27/3C$ 513
Fri 9/511:43 a.m.MCI - YUL
2 stops11h 54mMultiple Airlines
Tue 13/56:45 a.m.YUL - MCI
1 stop16h 56mMultiple Airlines
Deal found 27/3C$ 519
Wed 16/45:42 a.m.MCI - YUL
1 stop5h 02mAmerican Airlines
Wed 16/42:30 p.m.YUL - MCI
1 stop8h 57mAmerican Airlines
Deal found 27/3C$ 526
Tue 3/66:36 p.m.MCI - YUL
2 stops13h 47mAir Canada
Wed 4/61:15 p.m.YUL - MCI
1 stop11h 00mAir Canada
Deal found 27/3C$ 540
Thu 8/56:00 a.m.STL - YYZ
1 stop9h 10mDelta
Mon 12/510:20 a.m.YYZ - STL
1 stop8h 42mDelta
Deal found 27/3C$ 559
Tue 3/65:26 p.m.MCI - YUL
1 stop5h 28mDelta
Fri 6/67:00 a.m.YUL - MCI
1 stop8h 43mDelta
Deal found 27/3C$ 572
Sat 31/55:20 p.m.MCI - YUL
2 stops15h 03mUnited Airlines
Sat 7/68:05 a.m.YUL - MCI
1 stop13h 38mUnited Airlines
Deal found 27/3C$ 586
Thu 1/57:30 a.m.STL - YYZ
Nonstop1h 55mAir Canada
Sun 4/511:30 a.m.YYZ - STL
Nonstop2h 06mAir Canada
Deal found 27/3C$ 602
Tue 6/56:00 a.m.STL - YYZ
1 stop7h 30mAmerican Airlines
Wed 7/511:32 a.m.YYZ - STL
1 stop11h 20mAmerican Airlines
Deal found 27/3C$ 620
Wed 23/46:00 a.m.MCI - YYZ
1 stop13h 50mDelta
Wed 30/47:55 a.m.YYZ - MCI
1 stop9h 46mDelta
Deal found 27/3C$ 645

Cheapflights Fare Finder

Customize your flight search to find flights from Missouri to 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, Cheapflights users made 629,999 searches. Data last updated 28 March 2025.
Use the filters below to find and compare flights from Missouri to Ontario that are best for you.

Fly from

Missouri

Fly to

Ontario

Route

Depart

Return

Price

Kansas CityToronto

MCI - YYZ

MCIYYZ

Kansas City

Fri 30/5

5:35 a.m.-1:55 p.m.

1 stop7h 20m

Toronto Pearson Intl

Sun 1/6

4:00 p.m.-9:56 a.m.

1 stop18h 56m

C$ 443

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Sat 26/4

5:41 p.m.-9:55 a.m.

1 stop15h 14m

Toronto Pearson Intl

Sun 11/5

4:00 p.m.-6:41 p.m.

2 stops27h 41m

C$ 466

St. LouisMontreal

STL - YUL

STLYUL

Lambert-St Louis

Thu 17/4

4:57 p.m.-2:10 p.m.

1 stop20h 13m

Montreal Pierre Elliott Trudeau Intl

Sun 20/4

7:15 a.m.-5:15 p.m.

1 stop11h 00m

C$ 513

Kansas CityMontreal

MCI - YUL

MCIYUL

Kansas City

Fri 9/5

11:43 a.m.-12:37 a.m.

2 stops11h 54m

Montreal Pierre Elliott Trudeau Intl

Tue 13/5

6:45 a.m.-10:41 p.m.

1 stop16h 56m

C$ 519

Kansas CityMontreal

MCI - YUL

MCIYUL

Kansas City

Wed 16/4

5:42 a.m.-11:44 a.m.

1 stop5h 02m

Montreal Pierre Elliott Trudeau Intl

Wed 16/4

2:30 p.m.-10:27 p.m.

1 stop8h 57m

C$ 526

Kansas CityMontreal

MCI - YUL

MCIYUL

Kansas City

Tue 3/6

6:36 p.m.-9:23 a.m.

2 stops13h 47m

Montreal Pierre Elliott Trudeau Intl

Wed 4/6

1:15 p.m.-11:15 p.m.

1 stop11h 00m

C$ 540

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Thu 8/5

6:00 a.m.-4:10 p.m.

1 stop9h 10m

Toronto Pearson Intl

Mon 12/5

10:20 a.m.-6:02 p.m.

1 stop8h 42m

C$ 559

Kansas CityMontreal

MCI - YUL

MCIYUL

Kansas City

Tue 3/6

1:15 p.m.-11:54 p.m.

1 stop9h 39m

Montreal Pierre Elliott Trudeau Intl

Thu 5/6

7:00 a.m.-12:10 p.m.

1 stop6h 10m

C$ 572

Kansas CityMontreal

MCI - YUL

MCIYUL

Kansas City

Sat 31/5

5:20 p.m.-9:23 a.m.

2 stops15h 03m

Montreal Pierre Elliott Trudeau Intl

Sat 7/6

8:05 a.m.-8:43 p.m.

1 stop13h 38m

C$ 586

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Thu 1/5

7:30 a.m.-10:25 a.m.

Nonstop1h 55m

Toronto Pearson Intl

Sun 4/5

11:30 a.m.-12:36 p.m.

Nonstop2h 06m

C$ 602

Flights are sorted by cheapest round-trip flights first.

Deals found on 27/3

Showing 1-10 of 48 results
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Best time to book a flight from Missouri to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Missouri with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Missouri to Ontario

What is the cheapest month to book a flight from Missouri to Region of Ontario?

Currently, January is the cheapest month in which you can book a flight from Missouri to Region of Ontario (average of C$ 167). Flying from Missouri to Region of Ontario in July is currently the most expensive (average of C$ 258). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from MO to ON?

Find hourly flight availability from Missouri to Ontario. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 28 March 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Missouri to Region of Ontario as you normally would.

Rainfall in Ontario by month

Plan your trip to Ontario by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Region of Ontario ranges from 51.0 - 83.0 mm per month. June is typically the wettest month, when rainfall can reach 83.0 mm. February is typically the driest time to visit Region of Ontario when rainfall is around 51.0 mm.

Temperature in Ontario by month

Plan your trip to Ontario by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Region of Ontario, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 21.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -6.0 C).

Reviews of airlines servicing Ontario

Get insights into the airlines that provide service to Ontario. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Ontario. Reviews last updated 28 March 2025.
See what other customers who have flown with Alaska Airlines, Delta and United Airlines from Missouri to Ontario have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
9,798 reviews
Check prices

Crew

8.5

Food

7.1

Entertainment

7.1

Overall

8.0

Comfort

7.9

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Alaska Airlines
8.0
Very good
9,798 reviews
Alaska Airlines
8.0
Very good
9,798 reviews
Check prices

Crew

8.5

Food

7.1

Entertainment

7.1

Overall

8.0

Comfort

7.9

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Delta
8.0
Very good
7,896 reviews
Alaska Airlines
8.0
Very good
9,798 reviews
Check prices

Crew

8.5

Food

7.1

Entertainment

7.1

Overall

8.0

Comfort

7.9

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
United Airlines
7.4
Good
8,603 reviews
Alaska Airlines
8.0
Very good
9,798 reviews
Check prices

Crew

8.5

Food

7.1

Entertainment

7.1

Overall

8.0

Comfort

7.9

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
9,798 reviews
Check prices

Crew

8.5

Food

7.1

Entertainment

7.1

Overall

8.0

Comfort

7.9

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
WestJet
7.2
Good
2,788 reviews
Alaska Airlines
8.0
Very good
9,798 reviews
Check prices

Crew

8.5

Food

7.1

Entertainment

7.1

Overall

8.0

Comfort

7.9

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Related info for your journey

Find useful and relevant information for your journey from Missouri to Ontario. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the cheapest airlines to fly from Missouri to Region of Ontario one-way?

    The cheapest airlines for a one-way flight from Missouri to Region of Ontario are United Airlines (C$ 246), American Airlines (C$ 270), and Delta (C$ 280).

  • Can I find deals for flights from Missouri to Ontario that include hotel bookings?

    Yes. In addition to deals on Missouri to Ontario flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Missouri to Ontario?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Missouri to Ontario.

  • Can I find deals for business class flights from Missouri to Ontario?

    Yes. Cheapflights offers flight deals from Missouri to Ontario by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Missouri to Region of Ontario?

    Currently, January is the cheapest month in which you can book a flight from Missouri to Region of Ontario (average of C$ 167). Flying from Missouri to Region of Ontario in July is currently the most expensive (average of C$ 258). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Missouri to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
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Top airline flying from Missouri to Ontario

Discover the top airline that operate flights from Missouri to Ontario. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 629,999 searches. Data last updated 28 March 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 220AverageC$ 835FlexibilityNo cancel feeOn-time67%
Search Air Canada flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Missouri to Ontario?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Missouri to Ontario. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Why should you use Cheapflights to find cheap flight tickets from Missouri to Ontario?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Ontario from Missouri.

Can Cheapflights find flights from Missouri to Ontario with no change fees?

Certainly. Search results for flights to Ontario from Missouri shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from Missouri to Ontario become cheaper?

Yes! Start tracking prices for Missouri to Ontario flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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