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Missouri

$176+ 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 4/4. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — STL
Feb 25 — Mar 41
Tue 2/25
Tue 3/4
1 adult, Economy
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Cheap flight deals from Ontario to Missouri

Keep the following information in mind while searching for Ontario to Missouri flight deals. Data was last updated February 20, 2025.

Round-trip from

$249
(Mytrip)

One-way from

$176
(Kiwi.com)

Popular in

January

Cheapest in

February

Average price

$430

Good round-trip deal

$269 or less

Good one-way deal

$268 or less
From Ontario to Missouri
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One-way flight from Ontario to Missouri
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Highest demand for flights based on searches. 11% potential increase in price ($68 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($26 potential savings vs. average RT price).
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Average for round-trip flights in February 2025
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Price to beat on a round-trip flight from Ontario to Missouri.
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Price to beat on a one-way flight from Ontario to Missouri.
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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 February 20, 2025.

This Mytrip deal was found by Cheapflights users on 2/19. 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.
Fri 4/47:05 amYYZ - MCI
1 stop9h 21mMultiple Airlines
Fri 4/114:59 pmMCI - YYZ
1 stop29h 56mMultiple Airlines
Deal found 2/19$249
This Mytrip deal was found by Cheapflights users on 2/20. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/53:55 pmYUL - STL
1 stop26h 57mMultiple Airlines
Tue 4/156:11 pmSTL - YUL
1 stop19h 44mMultiple Airlines
Deal found 2/20$301
This United Airlines deal was found by Cheapflights users on 2/19. 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.
Sat 3/151:15 pmYUL - MCI
1 stop9h 02mUnited Airlines
Thu 4/37:45 amMCI - YUL
1 stop6h 06mUnited Airlines
Deal found 2/19$329
This American Airlines deal was found by Cheapflights users on 2/20. 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.
Fri 4/412:30 pmYUL - MCI
1 stop12h 19mAmerican Airlines
Mon 4/76:29 amMCI - YUL
1 stop15h 15mAmerican Airlines
Deal found 2/20$339
This WestJet deal was found by Cheapflights users on 2/19. 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.
Sun 4/67:05 amYUL - MCI
1 stop7h 23mWestJet
Sun 4/131:22 pmMCI - YUL
1 stop9h 37mWestJet
Deal found 2/19$387
This Air Canada deal was found by Cheapflights users on 2/20. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/76:00 amYUL - MCI
1 stop9h 27mAir Canada
Mon 3/106:25 pmMCI - YUL
1 stop15h 07mAir Canada
Deal found 2/20$391
This Air Canada deal was found by Cheapflights users on 2/19. 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.
Fri 4/41:40 pmYYZ - STL
Nonstop2h 09mAir Canada
Fri 4/113:30 pmSTL - YYZ
Nonstop2h 00mAir Canada
Deal found 2/19$406
This Air Canada deal was found by Cheapflights users on 2/20. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/209:15 amYUL - STL
1 stop6h 51mAir Canada
Mon 3/243:50 pmSTL - YUL
1 stop6h 58mAir Canada
Deal found 2/20$411
This Delta deal was found by Cheapflights users on 2/19. 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.
Wed 3/197:55 amYYZ - MCI
1 stop9h 45mDelta
Mon 3/2412:05 pmMCI - YYZ
1 stop10h 35mDelta
Deal found 2/19$412
This Air Canada deal was found by Cheapflights users on 2/19. 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 5/295:15 pmYYZ - MCI
1 stop5h 08mAir Canada
Sun 6/16:00 amMCI - YYZ
1 stop4h 49mAir Canada
Deal found 2/19$414
This American Airlines deal was found by Cheapflights users on 2/19. 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 4/111:30 amYYZ - STL
1 stop11h 48mAmerican Airlines
Sat 4/512:00 pmSTL - YYZ
1 stop10h 25mAmerican Airlines
Deal found 2/19$418
This United Airlines deal was found by Cheapflights users on 2/19. 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.
Sun 4/61:40 pmYYZ - STL
Nonstop2h 09mUnited Airlines
Sun 4/133:30 pmSTL - YYZ
Nonstop2h 00mUnited Airlines
Deal found 2/19$420

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 2,558,603 searches. Data last updated February 20, 2025.

Fly from

Ontario

Fly to

Missouri

Route

Depart

Return

Price

TorontoKansas City

YYZ - MCI

YYZMCI

Toronto Pearson Intl

Fri 4/4

7:05 am-3:26 pm

1 stop9h 21m

Kansas City

Fri 4/11

4:59 pm-11:55 pm

1 stop29h 56m

$249

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Sat 4/5

3:55 pm-5:52 pm

1 stop26h 57m

Lambert-St Louis

Tue 4/15

6:11 pm-2:55 pm

1 stop19h 44m

$301

MontrealKansas City

YUL - MCI

YULMCI

Montreal Pierre Elliott Trudeau Intl

Sat 3/15

1:15 pm-9:12 am

2 stops20h 57m

Kansas City

Thu 4/3

6:00 am-6:00 pm

2 stops11h 00m

$329

MontrealKansas City

YUL - MCI

YULMCI

Montreal Pierre Elliott Trudeau Intl

Fri 4/4

12:30 pm-11:49 pm

1 stop12h 19m

Kansas City

Mon 4/7

6:29 am-10:44 pm

1 stop15h 15m

$339

MontrealKansas City

YUL - MCI

YULMCI

Montreal Pierre Elliott Trudeau Intl

Sun 4/6

7:05 am-1:28 pm

1 stop7h 23m

Kansas City

Sun 4/13

1:22 pm-11:59 pm

1 stop9h 37m

$387

MontrealKansas City

YUL - MCI

YULMCI

Montreal Pierre Elliott Trudeau Intl

Fri 3/7

6:00 am-2:27 pm

1 stop9h 27m

Kansas City

Mon 3/10

6:25 pm-10:32 am

1 stop15h 07m

$391

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Fri 4/4

1:40 pm-2:49 pm

Nonstop2h 09m

Lambert-St Louis

Fri 4/11

3:30 pm-6:30 pm

Nonstop2h 00m

$406

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Thu 3/20

9:15 am-3:06 pm

1 stop6h 51m

Lambert-St Louis

Mon 3/24

3:50 pm-11:48 pm

1 stop6h 58m

$411

TorontoKansas City

YYZ - MCI

YYZMCI

Toronto Pearson Intl

Wed 3/19

7:55 am-4:40 pm

1 stop9h 45m

Kansas City

Mon 3/24

12:05 pm-11:40 pm

1 stop10h 35m

$412

TorontoKansas City

YYZ - MCI

YYZMCI

Toronto Pearson Intl

Thu 5/29

5:15 pm-9:23 pm

1 stop5h 08m

Kansas City

Sun 6/1

6:00 am-11:49 am

1 stop4h 49m

$414

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/20

Showing 1-10 of 48 results
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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, August is the cheapest month in which you can book a flight from Region of Ontario to Missouri (average of $311). Flying from Region of Ontario to Missouri in March is currently the most expensive (average of $356). 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 February 20, 2025.

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 February 20, 2025.

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 February 20, 2025.
To help decide which airline to fly from Ontario to Missouri, see what other customers have to say about Alaska Airlines, Delta and United Airlines. 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
9,697 reviews

Food

7.1

Crew

8.5

Entertainment

7.1

Boarding

8.2

Comfort

7.9

Overall

8.0

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
9,697 reviews
Alaska Airlines
8.0
Very good
9,697 reviews

Food

7.1

Crew

8.5

Entertainment

7.1

Boarding

8.2

Comfort

7.9

Overall

8.0

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
8,219 reviews
Alaska Airlines
8.0
Very good
9,697 reviews

Food

7.1

Crew

8.5

Entertainment

7.1

Boarding

8.2

Comfort

7.9

Overall

8.0

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
8,765 reviews
Alaska Airlines
8.0
Very good
9,697 reviews

Food

7.1

Crew

8.5

Entertainment

7.1

Boarding

8.2

Comfort

7.9

Overall

8.0

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
9,697 reviews

Food

7.1

Crew

8.5

Entertainment

7.1

Boarding

8.2

Comfort

7.9

Overall

8.0

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
2,801 reviews
Alaska Airlines
8.0
Very good
9,697 reviews

Food

7.1

Crew

8.5

Entertainment

7.1

Boarding

8.2

Comfort

7.9

Overall

8.0

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 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 $193. United Airlines flights start at $194 while deals on Delta start at $209 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, August is the cheapest month in which you can book a flight from Region of Ontario to Missouri (average of $311). Flying from Region of Ontario to Missouri in March is currently the most expensive (average of $356). 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

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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
Pierre Elliott Trudeau Intl to Fort Lauderdale flights
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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 2,558,603 searches. Data last updated February 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$296Average$519FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$372Average$539FlexibilityNo cancel feeOn-time69%
DeltaCheapest$389Average$494FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$389Average$463FlexibilityNo cancel feeOn-time71%
WestJetCheapest$448Average$611FlexibilityNo cancel feeOn-time60%
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