HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Ontario

$119+ Cheap flights from Missouri to Ontario

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 12/3. Fares are subject to change and may not be available on all flights or dates of travel.
STL — YYZ
Nov 9 — Nov 161
1 adult
Sat 11/9
Sat 11/16
We work with more than 300 partners to bring you better travel deals

...and more

Find cheap flights from Missouri to Ontario with Cheapflights

1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”
2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.
3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 November 4, 2024.

This Mytrip deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/2012:25 pmMCI - YYZ
1 stop10h 10mMultiple Airlines
Mon 11/255:30 pmYYZ - MCI
1 stop12h 43mMultiple Airlines
Deal found 11/3$298
This Kiwi.com deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/195:29 pmSTL - YYZ
1 stop20h 48mMultiple Airlines
Wed 11/208:00 pmYYZ - STL
1 stop22h 41mMultiple Airlines
Deal found 11/3$308
This Kiwi.com deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/285:21 pmSTL - YUL
1 stop20h 34mMultiple Airlines
Mon 12/23:55 pmYUL - STL
1 stop25h 31mMultiple Airlines
Deal found 11/3$344
This Air Canada deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/166:00 amMCI - YUL
1 stop11h 47mAir Canada
Sat 11/238:05 amYUL - MCI
1 stop16h 39mAir Canada
Deal found 11/3$362
This United deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/166:50 pmMCI - YUL
2 stops11h 55mUnited Airlines
Sat 11/239:15 amYUL - MCI
1 stop13h 33mUnited Airlines
Deal found 11/3$367
This Mytrip deal was found by Cheapflights users on 11/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/42:29 pmMCI - YTZ
2 stops21h 26mMultiple Airlines
Tue 12/107:45 pmYTZ - MCI
2 stops21h 02mMultiple Airlines
Deal found 11/4$399
This WestJet deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure WestJet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/36:00 amMCI - YUL
1 stop8h 32mWestJet
Tue 12/36:09 pmYUL - MCI
1 stop18h 23mWestJet
Deal found 11/3$404
This American Airlines deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/215:44 amMCI - YUL
2 stops10h 01mAmerican Airlines
Tue 12/312:59 pmYUL - MCI
1 stop9h 41mAmerican Airlines
Deal found 11/3$436
This WestJet deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure WestJet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/195:34 pmSTL - YYZ
1 stop5h 25mWestJet
Wed 11/206:30 amYYZ - STL
2 stops29h 10mWestJet
Deal found 11/3$453
This Kiwi.com deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/255:27 amMCI - YOW
1 stop10h 33mMultiple Airlines
Fri 11/296:10 pmYOW - MCI
1 stop11h 12mMultiple Airlines
Deal found 11/3$453
This Mytrip deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/286:18 amMCI - YUL
2 stops17h 12mMultiple Airlines
Sun 12/19:20 amYUL - MCI
2 stops30h 34mMultiple Airlines
Deal found 11/3$464
This Delta deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/311:25 amSTL - YYZ
1 stop4h 14mDelta
Tue 12/106:30 amYYZ - STL
1 stop9h 30mDelta
Deal found 11/3$542

Find flights from Missouri to Ontario within your budget

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 2,455,398 searches. Data last updated November 4, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Tue 12/3

5:02 pm-2:24 pm

1 stop20h 22m

$119

Kansas CityMontreal

MCI - YUL

MCIYUL

Kansas City

Wed 12/4

3:19 pm-11:59 pm

1 stop7h 40m

$152

Kansas CityMontreal

MCI - YUL

MCIYUL

Kansas City

Wed 12/4

5:44 am-4:45 pm

2 stops10h 01m

$157

Kansas CityToronto

MCI - YYZ

MCIYYZ

Kansas City

Fri 11/15

12:25 pm-12:30 am

1 stop11h 05m

$134

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Tue 12/3

3:50 pm-6:45 pm

Nonstop1h 55m

$322

St. LouisMontreal

STL - YUL

STLYUL

Lambert-St Louis

Thu 12/26

6:25 am-5:19 pm

1 stop9h 54m

$378

Kansas CityToronto

MCI - YYZ

MCIYYZ

Kansas City

Sat 11/9

6:20 am-4:55 pm

1 stop9h 35m

$427

Kansas CityToronto

MCI - YTZ

MCIYTZ

Kansas City

Sun 12/15

7:11 pm-5:25 pm

2 stops21h 14m

$244

Kansas CityOttawa

MCI - YOW

MCIYOW

Kansas City

Sat 12/28

10:46 pm-5:00 pm

1 stop17h 14m

$280

Kansas CityOttawa

MCI - YOW

MCIYOW

Kansas City

Sun 12/29

8:00 am-5:06 pm

1 stop8h 06m

$371

Flights are sorted by cheapest first

Deals found on 11/3

Showing 1-10 of 47 results
1
2
3
...
5

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.

Travel insights for flights from Missouri to Ontario

Get recent, data-driven insights about flights from Missouri to Ontario including ideal travel times, pricing trends, and more.

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 $242). Flying from Missouri to Region of Ontario in July is currently the most expensive (average of $359). 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 November 4, 2024.

When flying from Missouri to Region of Ontario, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Weekly flight availability from Missouri to Region of Ontario

Explore weekly flight availability from Missouri to Ontario. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated November 4, 2024.

The most flights from USMO to CAON are scheduled on a Monday (2 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (2 on average).

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 2.0 - 3.3 inches per month. June is typically the wettest month, when rainfall can reach 3.3 in. February is typically the driest time to visit Region of Ontario when rainfall is around 2.0 in.

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 69.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 21.2 F).

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 November 4, 2024.
Peruse reviews from past customers who have flown with Alaska Airlines, American Airlines and United Airlines from Missouri to Ontario to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
9,423 reviews

Comfort

7.9

Food

7.2

Entertainment

7.1

Overall

8.0

Crew

8.5

Boarding

8.2

Reviews

1 / 10

Service was good. We pre-ordered a snack but never made it to us.

Alaska Airlines
8.0
Very good
9,423 reviews
Alaska Airlines
8.0
Very good
9,423 reviews

Comfort

7.9

Food

7.2

Entertainment

7.1

Overall

8.0

Crew

8.5

Boarding

8.2

Reviews

1 / 10

Service was good. We pre-ordered a snack but never made it to us.

Delta
8.0
Very good
8,829 reviews
Alaska Airlines
8.0
Very good
9,423 reviews

Comfort

7.9

Food

7.2

Entertainment

7.1

Overall

8.0

Crew

8.5

Boarding

8.2

Reviews

1 / 10

Service was good. We pre-ordered a snack but never made it to us.

United Airlines
7.4
Good
9,232 reviews
Alaska Airlines
8.0
Very good
9,423 reviews

Comfort

7.9

Food

7.2

Entertainment

7.1

Overall

8.0

Crew

8.5

Boarding

8.2

Reviews

1 / 10

Service was good. We pre-ordered a snack but never made it to us.

WestJet
7.3
Good
2,803 reviews
Alaska Airlines
8.0
Very good
9,423 reviews

Comfort

7.9

Food

7.2

Entertainment

7.1

Overall

8.0

Crew

8.5

Boarding

8.2

Reviews

1 / 10

Service was good. We pre-ordered a snack but never made it to us.

American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
9,423 reviews

Comfort

7.9

Food

7.2

Entertainment

7.1

Overall

8.0

Crew

8.5

Boarding

8.2

Reviews

1 / 10

Service was good. We pre-ordered a snack but never made it to us.

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.

  • Can I find flights from Missouri to Region of Ontario for under $300 on Cheapflights?

    Yes, there are multiple flights from Missouri to Region of Ontario for under $300. The cheapest flight booked recently is on Multiple Airlines for just $298, but on average you can expect to pay $463.

  • Are there nonstop flights from Missouri to Region of Ontario for under $600 on Cheapflights?

    Cheapflights has at least 3 direct flights from Missouri to Region of Ontario under $600. A good price for a nonstop flight from Missouri to Region of Ontario is less than $622.

  • Are there last-minute flights available from Missouri to Region of Ontario for under $500?

    There are currently 16+ open flights from Missouri to Region of Ontario within the next 7 days for less than $500.

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

    The cheapest airline one-way is Delta, with whom users have recently found tickets for as low as $152. However, be on the lookout for offers from American Airlines and United Airlines, as they are both options that can get you from Missouri to Region of Ontario for a low price.

  • What does STL to YYZ mean?

    These are just IATA (International Air Transport Association) codes. They are used in aviation to identify and differentiate airports. That’s why a Lambert-St Louis Airport to Toronto Pearson Intl Airport flight would often be abbreviated as a STL to YYZ flight. While you’re still figuring out your travel plans, it’s not a bad idea to learn the names and codes of other airports around these areas: Ottawa Airport (YOW), Toronto Island Airport (YTZ), London Airport (YXU), Hamilton Airport (YHM), Toronto Region of Waterloo Intl Airport (YKF).

  • Can I find deals for flights from Missouri to Ontario that include extra baggage allowance?

    The amount of baggage you can bring on your Missouri to Ontario flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

  • Can I find deals on flights from Missouri to Ontario with specific airlines?

    Yes, Cheapflights allows you to browse and filter Missouri to Ontario flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

  • 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.

  • Can I find deals for flights from Missouri to Ontario that allow pets onboard?

    Many airlines flying from Missouri to Ontario offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

  • Can I find deals on last-minute flights from Missouri to Ontario?

    Yes, you can often find last-minute deals on Missouri to Ontario flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

  • How recently were the Missouri to Region of Ontario flight deals updated?

    The Missouri to Region of Ontario flight deals you see on this page were last updated on 11/4.

  • 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 $242). Flying from Missouri to Region of Ontario in July is currently the most expensive (average of $359). 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

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Missouri to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
Newark to Toronto Island flights
Newark to Pearson Intl flights
LaGuardia to Pearson Intl flights
John F Kennedy Intl to Vancouver Intl flights
John F Kennedy Intl to Pearson Intl flights
Los Angeles to Vancouver Intl flights
Newark to Vancouver Intl flights
John F Kennedy Intl to Pierre Elliott Trudeau Intl flights
Newark to Pierre Elliott Trudeau Intl flights
Dulles Intl to Pearson Intl flights
San Francisco to Vancouver Intl flights
LaGuardia to Pierre Elliott Trudeau Intl flights
O'Hare Intl to Vancouver Intl flights
Reagan-National to Pearson Intl flights
Boston to Pearson Intl flights
LaGuardia to Vancouver Intl flights
Los Angeles to Pearson Intl flights
Boston to Toronto Island flights
San Francisco to Pearson Intl flights
Denver to Vancouver Intl flights
O'Hare Intl to Pearson Intl flights
Minneapolis to Vancouver Intl flights
Dallas/Fort Worth to Vancouver Intl flights
Dulles Intl to Toronto Island flights
Los Angeles to Abbotsford flights
Dulles Intl to Vancouver Intl flights
Portland to Vancouver Intl flights
Dallas/Fort Worth to Pearson Intl flights
Santa Ana to Vancouver Intl flights
Baltimore to Pearson Intl flights
San Francisco to Abbotsford flights
San Diego to Vancouver Intl flights
Baltimore to Vancouver Intl flights
Ontario to Vancouver Intl flights
Reagan-National to Vancouver Intl flights
O'Hare Intl to Pierre Elliott Trudeau Intl flights
Newark to Québec City flights
Boston to Pierre Elliott Trudeau Intl flights
Atlanta to Vancouver Intl flights
Minneapolis to Pearson Intl flights
Atlanta to Pearson Intl flights
Philadelphia to Pearson Intl flights
Dulles Intl to Pierre Elliott Trudeau Intl flights
Cincinnati to Vancouver Intl flights
Seattle to Vancouver Intl flights
Reagan-National to Pierre Elliott Trudeau Intl flights
Boston to Vancouver Intl flights
Los Angeles to Calgary flights
Sky Harbor Intl to Vancouver Intl flights
Seattle to Pearson Intl flights

Top 5 airlines flying from Missouri to Ontario

Discover the top 5 airlines 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 2,455,398 searches. Data last updated November 4, 2024.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$197Average$574FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$225Average$674FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$307Average$674FlexibilityNo cancel feeOn-time71%
DeltaCheapest$461Average$530FlexibilityNo cancel feeOn-timeN/A
WestJetCheapest$489Average$592FlexibilityNo cancel feeOn-time60%
100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.
View all available airlines