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$132+ 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 3/11. Fares are subject to change and may not be available on all flights or dates of travel.
STL — YYZ
Jan 26 — Feb 21
Sun 1/26
Sun 2/2
1 adult, Economy
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Cheap flight deals from Missouri to Ontario

Discover tips and strategies to find the most affordable flight options for your journey from Missouri (USMO) to Ontario (CAON). 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 January 21, 2025.

Round-trip from

$300
(Mytrip)

One-way from

$132
(Kiwi.com)

Good round-trip deal

$804 or less

Good one-way deal

$381 or less
From Missouri to Ontario
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One-way flight from Missouri to Ontario
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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 January 21, 2025.

This Mytrip deal was found by Cheapflights users on 1/21. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/184:00 pmSTL - YYZ
2 stops20h 55mMultiple Airlines
Tue 2/257:05 amYYZ - STL
1 stop8h 37mMultiple Airlines
Deal found 1/21$300
This Mytrip deal was found by Cheapflights users on 1/20. 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.
Thu 3/610:30 amMCI - YYZ
1 stop8h 00mMultiple Airlines
Thu 3/137:10 amYYZ - MCI
1 stop10h 07mMultiple Airlines
Deal found 1/20$313
This Mytrip deal was found by Cheapflights users on 1/21. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/34:17 pmMCI - YUL
2 stops23h 28mMultiple Airlines
Fri 3/73:55 pmYUL - MCI
2 stops25h 22mMultiple Airlines
Deal found 1/21$365
This Mytrip deal was found by Cheapflights users on 1/20. 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.
Thu 3/610:30 amMCI - YTZ
2 stops10h 05mMultiple Airlines
Thu 3/137:00 amYTZ - MCI
3 stops27h 25mMultiple Airlines
Deal found 1/20$386
This United Airlines deal was found by Cheapflights users on 1/21. 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.
Fri 2/78:00 amMCI - YUL
1 stop8h 50mUnited Airlines
Sun 2/98:05 amYUL - MCI
1 stop13h 26mUnited Airlines
Deal found 1/21$389
This Delta deal was found by Cheapflights users on 1/21. 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.
Thu 2/271:35 pmSTL - YYZ
1 stop9h 04mDelta
Wed 3/57:55 amYYZ - STL
1 stop9h 54mDelta
Deal found 1/21$434
This Justfly.com deal was found by Cheapflights users on 1/21. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/1010:37 amMCI - YUL
1 stop24h 21mWestJet
Thu 3/1311:25 amYUL - MCI
1 stop6h 15mWestJet
Deal found 1/21$435
This Mytrip deal was found by Cheapflights users on 1/21. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/274:00 pmSTL - YOW
2 stops22h 12mMultiple Airlines
Wed 3/58:15 pmYOW - STL
2 stops21h 27mMultiple Airlines
Deal found 1/21$442
This Mytrip deal was found by Cheapflights users on 1/20. 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.
Fri 2/145:15 pmSTL - YUL
3 stops24h 00mMultiple Airlines
Sun 2/166:50 amYUL - STL
3 stops29h 40mMultiple Airlines
Deal found 1/20$465
This Delta deal was found by Cheapflights users on 1/21. 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.
Wed 3/56:06 amSTL - YUL
1 stop9h 13mDelta
Wed 3/126:00 amYUL - STL
1 stop9h 49mDelta
Deal found 1/21$479
This American Airlines deal was found by Cheapflights users on 1/21. 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 2/187:29 amSTL - YYZ
1 stop10h 31mAmerican Airlines
Tue 2/2510:55 amYYZ - STL
1 stop12h 49mAmerican Airlines
Deal found 1/21$489
This WestJet deal was found by Cheapflights users on 1/20. 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 WestJet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/1812:00 pmMCI - YYZ
1 stop27h 08mWestJet
Thu 2/201:50 pmYYZ - MCI
2 stops23h 37mWestJet
Deal found 1/20$502

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 2,558,603 searches. Data last updated January 21, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Tue 2/18

4:00 pm-1:55 pm

2 stops20h 55m

Toronto Pearson Intl

Tue 2/25

7:05 am-2:42 pm

1 stop8h 37m

$300

Kansas CityToronto

MCI - YYZ

MCIYYZ

Kansas City

Thu 3/6

10:30 am-7:30 pm

1 stop8h 00m

Toronto Pearson Intl

Thu 3/13

7:10 am-4:17 pm

1 stop10h 07m

$313

Kansas CityMontreal

MCI - YUL

MCIYUL

Kansas City

Mon 3/3

4:17 pm-4:45 pm

2 stops23h 28m

Montreal Pierre Elliott Trudeau Intl

Fri 3/7

3:55 pm-4:17 pm

2 stops25h 22m

$365

Kansas CityToronto

MCI - YTZ

MCIYTZ

Kansas City

Thu 3/6

10:30 am-9:35 pm

2 stops10h 05m

Toronto Island

Thu 3/13

7:00 am-9:25 am

3 stops27h 25m

$386

Kansas CityMontreal

MCI - YUL

MCIYUL

Kansas City

Fri 2/7

8:00 am-5:50 pm

1 stop8h 50m

Montreal Pierre Elliott Trudeau Intl

Sun 2/9

8:05 am-8:31 pm

1 stop13h 26m

$389

Kansas CityOttawa

MCI - YOW

MCIYOW

Kansas City

Mon 3/10

11:52 am-8:17 am

2 stops19h 25m

Ottawa

Thu 3/13

9:25 am-9:25 am

2 stops25h 00m

$421

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Thu 2/27

1:35 pm-11:39 pm

1 stop9h 04m

Toronto Pearson Intl

Wed 3/5

7:55 am-4:49 pm

1 stop9h 54m

$434

Kansas CityMontreal

MCI - YUL

MCIYUL

Kansas City

Mon 3/10

10:37 am-11:58 am

1 stop24h 21m

Montreal Pierre Elliott Trudeau Intl

Thu 3/13

11:25 am-4:40 pm

1 stop6h 15m

$435

St. LouisOttawa

STL - YOW

STLYOW

Lambert-St Louis

Thu 2/27

4:00 pm-3:12 pm

2 stops22h 12m

Ottawa

Wed 3/5

8:15 pm-4:42 pm

2 stops21h 27m

$442

St. LouisMontreal

STL - YUL

STLYUL

Lambert-St Louis

Fri 2/14

5:15 pm-6:15 pm

3 stops24h 00m

Montreal Pierre Elliott Trudeau Intl

Sun 2/16

6:50 am-11:30 am

3 stops29h 40m

$465

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/20

Showing 1-10 of 58 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.

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 $243). 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 January 21, 2025.

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 January 21, 2025.

The most flights from USMO to CAON are scheduled on a Monday (2 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (1 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 January 21, 2025.
Peruse reviews from past customers who have flown with Alaska Airlines, United Airlines and American 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
9,706 reviews

Comfort

7.9

Food

7.1

Overall

8.0

Entertainment

7.1

Crew

8.5

Boarding

8.2

Reviews

1 / 10

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
9,706 reviews
Alaska Airlines
8.0
Very good
9,706 reviews

Comfort

7.9

Food

7.1

Overall

8.0

Entertainment

7.1

Crew

8.5

Boarding

8.2

Reviews

1 / 10

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
8,521 reviews
Alaska Airlines
8.0
Very good
9,706 reviews

Comfort

7.9

Food

7.1

Overall

8.0

Entertainment

7.1

Crew

8.5

Boarding

8.2

Reviews

1 / 10

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
8,985 reviews
Alaska Airlines
8.0
Very good
9,706 reviews

Comfort

7.9

Food

7.1

Overall

8.0

Entertainment

7.1

Crew

8.5

Boarding

8.2

Reviews

1 / 10

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
9,706 reviews

Comfort

7.9

Food

7.1

Overall

8.0

Entertainment

7.1

Crew

8.5

Boarding

8.2

Reviews

1 / 10

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
2,829 reviews
Alaska Airlines
8.0
Very good
9,706 reviews

Comfort

7.9

Food

7.1

Overall

8.0

Entertainment

7.1

Crew

8.5

Boarding

8.2

Reviews

1 / 10

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 airline one-way is United Airlines, with whom users have recently found tickets for as low as $166. However, be on the lookout for offers from Delta and WestJet, as they are both options that can get you from Missouri to Region of Ontario for a low price.

  • 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 $243). 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

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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.
Newark to Pearson Intl flights
John F Kennedy Intl to Pearson Intl flights
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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 2,558,603 searches. Data last updated January 21, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$213Average$578FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$244Average$607FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$304Average$569FlexibilityNo cancel feeOn-time71%
DeltaCheapest$464Average$635FlexibilityNo cancel feeOn-timeN/A
WestJetCheapest$489Average$678FlexibilityNo cancel feeOn-time60%
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