HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Missouri

$159+ Cheap flights from Ontario to Missouri

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 1/22. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — STL
Nov 26 — Dec 31
Tue 11/26
Tue 12/3
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Ontario to Missouri 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.

Cheap flight deals from Ontario to Missouri

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (CAON) to Missouri (USMO). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated November 21, 2024.

Find flight deals from Ontario to Missouri

Cheapest flights from Ontario to Missouri
Explore the most affordable flight options available from Ontario to Missouri. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 21, 2024.

This United Airlines deal was found by Cheapflights users on 11/21. 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 Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/247:00 pmYUL - MCI
2 stops27h 55mUnited Airlines
Thu 1/23:16 pmMCI - YUL
2 stops15h 29mUnited Airlines
Deal found 11/21$316
This Kiwi.com deal was found by Cheapflights users on 11/21. 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 12/57:30 amYYZ - MCI
1 stop11h 35mMultiple Airlines
Mon 12/167:03 pmMCI - YYZ
1 stop9h 52mMultiple Airlines
Deal found 11/21$427
This Air Canada deal was found by Cheapflights users on 11/21. 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.
Tue 12/172:00 pmYYZ - MCI
1 stop4h 38mAir Canada
Tue 12/318:00 amMCI - YYZ
1 stop4h 42mAir Canada
Deal found 11/21$450
This United Airlines deal was found by Cheapflights users on 11/21. 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 Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/177:20 amYYZ - MCI
2 stops8h 01mUnited Airlines
Tue 12/315:20 amMCI - YYZ
1 stop16h 32mUnited Airlines
Deal found 11/21$454
This American Airlines deal was found by Cheapflights users on 11/20. 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.
Wed 12/1811:37 amYYZ - MCI
1 stop11h 48mAmerican Airlines
Wed 12/255:32 amMCI - YYZ
1 stop4h 27mAmerican Airlines
Deal found 11/20$470
This American Airlines deal was found by Cheapflights users on 11/21. 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.
Tue 12/246:15 amYYZ - STL
1 stop10h 25mAmerican Airlines
Sun 12/295:36 amSTL - YYZ
1 stop5h 54mAmerican Airlines
Deal found 11/21$481
This Kiwi.com deal was found by Cheapflights users on 11/21. 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 11/2511:05 pmYYZ - STL
2 stops18h 21mMultiple Airlines
Tue 11/2610:17 pmSTL - YYZ
1 stop31h 29mMultiple Airlines
Deal found 11/21$488
This FlightHub deal was found by Cheapflights users on 11/21. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/317:10 amYUL - MCI
1 stop10h 54mWestJet
Fri 1/35:49 pmMCI - YUL
1 stop4h 20mWestJet
Deal found 11/21$490
This Delta deal was found by Cheapflights users on 11/21. 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.
Fri 11/2212:50 pmYUL - MCI
1 stop9h 29mDelta
Mon 11/256:15 amMCI - YUL
1 stop9h 07mDelta
Deal found 11/21$495
This Air Canada deal was found by Cheapflights users on 11/21. 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.
Thu 12/191:50 pmYYZ - STL
Nonstop2h 16mAir Canada
Thu 12/265:30 pmSTL - YYZ
1 stop4h 36mAir Canada
Deal found 11/21$512
This American Airlines deal was found by Cheapflights users on 11/21. 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.
Fri 11/2212:30 pmYUL - MCI
1 stop11h 02mAmerican Airlines
Mon 11/256:00 amMCI - YUL
2 stops9h 45mAmerican Airlines
Deal found 11/21$515
This United Airlines deal was found by Cheapflights users on 11/20. 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 Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/101:50 pmYYZ - STL
Nonstop2h 16mUnited Airlines
Tue 1/76:30 amSTL - YYZ
1 stop8h 15mUnited Airlines
Deal found 11/20$527

Find flights from Ontario to Missouri within your budget

Customize your flight search to find flights from Ontario to Missouri 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 2,612,795 searches. Data last updated November 21, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

MontrealKansas City

YUL - MCI

YULMCI

Montreal Pierre Elliott Trudeau Intl

Tue 12/24

7:00 pm-9:55 pm

2 stops27h 55m

Kansas City

Thu 1/2

3:16 pm-7:45 am

2 stops15h 29m

$316

TorontoKansas City

YYZ - MCI

YYZMCI

Toronto Pearson Intl

Fri 1/10

7:55 pm-2:55 pm

2 stops20h 00m

Kansas City

Mon 1/13

7:27 pm-5:55 am

1 stop9h 28m

$373

TorontoKansas City

YYZ - MCI

YYZMCI

Toronto Pearson Intl

Tue 12/17

2:00 pm-5:38 pm

1 stop4h 38m

Kansas City

Tue 12/31

8:00 am-1:42 pm

1 stop4h 42m

$450

TorontoKansas City

YYZ - MCI

YYZMCI

Toronto Pearson Intl

Tue 12/17

7:20 am-2:21 pm

2 stops8h 01m

Kansas City

Tue 12/31

5:20 am-10:52 pm

1 stop16h 32m

$454

TorontoKansas City

YYZ - MCI

YYZMCI

Toronto Pearson Intl

Mon 1/6

2:30 pm-8:23 pm

1 stop6h 53m

Kansas City

Tue 1/14

8:05 am-5:00 pm

1 stop7h 55m

$462

MontrealKansas City

YUL - MCI

YULMCI

Montreal Pierre Elliott Trudeau Intl

Sun 1/5

6:45 am-11:59 pm

2 stops18h 14m

Kansas City

Sun 1/12

11:38 am-11:36 pm

1 stop10h 58m

$465

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Fri 1/17

1:14 pm-10:09 pm

1 stop9h 55m

Lambert-St Louis

Tue 1/21

5:40 am-5:35 pm

1 stop10h 55m

$468

TorontoKansas City

YYZ - MCI

YYZMCI

Toronto Pearson Intl

Wed 12/18

11:37 am-10:25 pm

1 stop11h 48m

Kansas City

Wed 12/25

5:32 am-10:59 am

1 stop4h 27m

$470

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Fri 1/17

7:00 am-11:45 am

3 stops29h 45m

Lambert-St Louis

Tue 1/21

12:00 pm-6:46 am

3 stops41h 46m

$482

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Sat 2/22

1:10 pm-9:46 pm

1 stop9h 36m

Lambert-St Louis

Mon 3/10

1:05 pm-7:45 am

2 stops17h 40m

$491

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/21

Showing 1-10 of 49 results
1
2
3
...
5

Best time to book a flight from Ontario to Missouri

Have a flexible travel schedule? Discover the best time to fly to Missouri from Ontario 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 Ontario to Missouri

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

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

Currently, September is the cheapest month in which you can book a flight from Region of Ontario to Missouri (average of $308). Flying from Region of Ontario to Missouri in March is currently the most expensive (average of $357). 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 ON to MO?

Find hourly flight availability from Ontario to Missouri. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 21, 2024.

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

Weekly flight availability from Region of Ontario to Missouri

Explore weekly flight availability from Ontario to Missouri. 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 21, 2024.

The most flights from CAON to USMO are scheduled on a Wednesday (2 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (1 on average).

Rainfall in Missouri by month

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

In terms of precipitation, rainfall in Missouri ranges from 1.1 - 5.2 inches per month. May is typically the wettest month, when rainfall can reach 5.2 in. January is typically the driest time to visit Missouri when rainfall is around 1.1 in.

Temperature in Missouri by month

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

If weather is an important factor for your trip to Missouri, 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 78.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 28.4 F).

Reviews of airlines servicing Missouri

Get insights into the airlines that provide service to Missouri. 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 Missouri. Reviews last updated November 21, 2024.
To help decide which airline to fly from Ontario to Missouri, see what other customers have to say about American Airlines, Air Canada and Delta. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
9,464 reviews

Entertainment

7.1

Crew

8.5

Food

7.2

Boarding

8.2

Overall

8.0

Comfort

7.9

Reviews

1 / 10

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

Alaska Airlines
8.0
Very good
9,464 reviews
Alaska Airlines
8.0
Very good
9,464 reviews

Entertainment

7.1

Crew

8.5

Food

7.2

Boarding

8.2

Overall

8.0

Comfort

7.9

Reviews

1 / 10

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

Delta
8.0
Very good
8,755 reviews
Alaska Airlines
8.0
Very good
9,464 reviews

Entertainment

7.1

Crew

8.5

Food

7.2

Boarding

8.2

Overall

8.0

Comfort

7.9

Reviews

1 / 10

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

United Airlines
7.4
Good
9,172 reviews
Alaska Airlines
8.0
Very good
9,464 reviews

Entertainment

7.1

Crew

8.5

Food

7.2

Boarding

8.2

Overall

8.0

Comfort

7.9

Reviews

1 / 10

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

WestJet
7.3
Good
2,811 reviews
Alaska Airlines
8.0
Very good
9,464 reviews

Entertainment

7.1

Crew

8.5

Food

7.2

Boarding

8.2

Overall

8.0

Comfort

7.9

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
9,464 reviews

Entertainment

7.1

Crew

8.5

Food

7.2

Boarding

8.2

Overall

8.0

Comfort

7.9

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 Ontario to Missouri. 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 Region of Ontario to Missouri one-way?

    To fly one-way, consider booking your trip with Air Canada, which is currently one of the cheapest options available, starting at $172. United Airlines flights start at $175 while deals on American Airlines start at $182 one-way.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Ontario to Missouri 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 Region of Ontario to Missouri?

    Currently, September is the cheapest month in which you can book a flight from Region of Ontario to Missouri (average of $308). Flying from Region of Ontario to Missouri in March is currently the most expensive (average of $357). 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 Ontario to Missouri

See prices for flight routes from nearby airports that may be better suited for you.
Pearson Intl to Newark flights
Pearson Intl to Miami flights
Toronto Island to Newark flights
Pearson Intl to LaGuardia flights
Pearson Intl to John F Kennedy Intl flights
Pierre Elliott Trudeau Intl to Fort Lauderdale flights
Pearson Intl to Fort Lauderdale flights
Pierre Elliott Trudeau Intl to John F Kennedy Intl flights
Vancouver Intl to Los Angeles flights
Pierre Elliott Trudeau Intl to Newark flights
Pearson Intl to Orlando flights
Pierre Elliott Trudeau Intl to Miami flights
Pearson Intl to Las Vegas flights
Pierre Elliott Trudeau Intl to LaGuardia flights
Vancouver Intl to Las Vegas flights
Pearson Intl to Dallas/Fort Worth flights
Vancouver Intl to Newark flights
Toronto Island to Fort Lauderdale flights
Pierre Elliott Trudeau Intl to Orlando flights
Vancouver Intl to John F Kennedy Intl flights
Vancouver Intl to Honolulu flights
Pearson Intl to Los Angeles flights
Pierre Elliott Trudeau Intl to Los Angeles flights
Pearson Intl to West Palm Beach flights
Pearson Intl to O'Hare Intl flights
Toronto Island to Orlando flights
Pearson Intl to San Francisco flights
Vancouver Intl to San Francisco flights
Pearson Intl to Tampa flights
Vancouver Intl to Sky Harbor Intl flights
Pearson Intl to Hobby flights
Pearson Intl to Boston flights
Pearson Intl to Reagan-National flights
Pearson Intl to Sky Harbor Intl flights
Vancouver Intl to Palm Springs flights
Ottawa to Fort Lauderdale flights
Pearson Intl to George Bush Intcntl flights
Vancouver Intl to LaGuardia flights
Vancouver Intl to Miami flights
Pierre Elliott Trudeau Intl to O'Hare Intl flights
Pearson Intl to Nashville flights
Pearson Intl to Dulles Intl flights
Calgary to Las Vegas flights
Pearson Intl to Seattle flights
Québec City to Fort Lauderdale flights
Ottawa to Orlando flights
Pearson Intl to Fort Myers flights
Ottawa to Newark flights
Toronto Island to Boston flights

Top 5 airlines flying from Ontario to Missouri

Discover the top 5 airlines that operate flights from Ontario to Missouri. 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 2,612,795 searches. Data last updated November 21, 2024.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$264Average$552FlexibilityNo cancel feeOn-time67%
DeltaCheapest$374Average$494FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$382Average$495FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$389Average$639FlexibilityNo cancel feeOn-time69%
WestJetCheapest$443Average$606FlexibilityNo 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