How long is the flight from Missouri to Region of Ontario?

American Airlines, United Airlines, and Delta can get you from Missouri to Region of Ontario in just under 8h 44m. Your travel time can differ by up to 13h 54m. The distance from Missouri to Region of Ontario is about 1051 km. This flight may include one or multiple stops.

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 Air Canada (C$ 193), Delta (C$ 350), and United Airlines (C$ 366).

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.

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).

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.

C$ 171+ Cheap Flights from Missouri to Ontario

Cheap flight deals from Missouri to Ontario

Enter your travel dates to find the best prices.

Cheapest

Best

Direct

Last-minute

One-way

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 18 September 2026.

Mon 2/115:05 a.m. -

1 stop8h 29m

Mon 9/1111:36 a.m. -

1 stop8h 46m

Deal found 17/9C$ 495

Mon 2/119:16 a.m. -

1 stop28h 44m

Sun 15/117:35 a.m. -

1 stop26h 21m

Deal found 16/9C$ 505

Wed 11/116:44 p.m. -

2 stops17h 56m

Sun 15/118:30 p.m. -

1 stop17h 03m

Deal found 14/9C$ 516

Fri 30/107:29 a.m. -

1 stop9h 15m

Mon 2/1111:36 a.m. -

1 stop8h 46m

Deal found 17/9C$ 533

Fri 23/1010:56 a.m. -

1 stop26h 09m

Sun 1/119:20 a.m. -

1 stop24h 06m

Deal found 14/9C$ 547

Mon 9/116:44 p.m. -

2 stops21h 26m

Thu 12/116:30 a.m. -

1 stop17h 46m

Deal found 15/9C$ 554

Mon 2/116:44 p.m. -

2 stops23h 36m

Mon 9/116:30 a.m. -

1 stop17h 46m

Deal found 17/9C$ 567

Wed 21/106:35 p.m. -

2 stops25h 20m

Wed 28/1011:30 a.m. -

1 stop26h 03m

Deal found 15/9C$ 592

Fri 9/104:30 p.m. -

1 stop20h 15m

Mon 12/109:50 a.m. -

1 stop14h 23m

Deal found 13/9C$ 596

Mon 9/114:26 p.m. -

1 stop20h 44m

Fri 13/116:30 a.m. -

1 stop17h 46m

Deal found 15/9C$ 602

Tue 1/126:05 p.m. -

1 stop20h 18m

Sat 5/1212:40 p.m. -

1 stop13h 01m

Deal found 15/9C$ 603

Fri 6/116:44 p.m. -

2 stops19h 36m

Wed 11/1112:20 p.m. -

3 stops25h 13m

Deal found 16/9C$ 604

Best flights from Missouri to Ontario
Discover carefully curated flight deals from Missouri to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 18 September 2026.

Thu 22/107:03 a.m. -

1 stop8h 44m

Tue 27/1011:09 a.m. -

1 stop10h 23m

Deal found 13/9C$ 669

Mon 19/101:29 p.m. -

1 stop8h 57m

Tue 20/109:00 p.m. -

1 stop25h 21m

Deal found 17/9C$ 743

Thu 12/1112:14 p.m. -

2 stops24h 26m

Mon 16/116:30 a.m. -

1 stop17h 46m

Deal found 17/9C$ 761

Sat 10/102:00 p.m. -

1 stop22h 38m

Tue 13/109:30 a.m. -

1 stop11h 44m

Deal found 16/9C$ 792

Fri 30/1012:00 p.m. -

2 stops17h 35m

Fri 6/116:40 a.m. -

2 stops38h 16m

Deal found 15/9C$ 1,305

Fri 30/1010:53 a.m. -

2 stops7h 59m

Fri 6/119:15 a.m. -

1 stop7h 11m

Deal found 15/9C$ 1,381

Wed 2/1211:47 a.m. -

1 stop24h 53m

Wed 30/127:35 a.m. -

2 stops25h 01m

Deal found 16/9C$ 800

Wed 14/106:34 a.m. -

1 stop8h 41m

Wed 21/109:30 a.m. -

1 stop9h 04m

Deal found 16/9C$ 807

Sat 31/109:22 a.m. -

2 stops11h 08m

Sat 7/1112:10 p.m. -

1 stop11h 40m

Deal found 16/9C$ 809

Thu 15/108:00 a.m. -

1 stop27h 00m

Sat 17/108:35 a.m. -

1 stop15h 23m

Deal found 18/9C$ 842

Wed 25/116:35 p.m. -

2 stops19h 45m

Sun 29/117:00 a.m. -

1 stop17h 59m

Deal found 13/9C$ 802

Wed 14/104:23 p.m. -

1 stop6h 31m

Sat 24/107:00 a.m. -

1 stop10h 26m

Deal found 15/9C$ 813

Mon 12/106:27 a.m. -

1 stop7h 29m

Fri 16/101:15 p.m. -

1 stop12h 13m

Deal found 15/9C$ 866

Fri 30/106:00 a.m. -

1 stop10h 07m

Sat 31/101:10 p.m. -

1 stop9h 30m

Deal found 17/9C$ 880

Tue 13/105:35 p.m. -

1 stop4h 40m

Tue 20/1012:49 p.m. -

1 stop11h 32m

Deal found 14/9C$ 852

Mon 26/1011:33 a.m. -

1 stop11h 19m

Thu 29/1010:00 a.m. -

1 stop10h 55m

Deal found 17/9C$ 901

Tue 6/109:22 a.m. -

1 stop6h 30m

Tue 13/105:34 p.m. -

1 stop16h 08m

Deal found 15/9C$ 908

Tue 3/118:00 a.m. -

1 stop5h 25m

Sat 7/112:10 p.m. -

Nonstop2h 16m

Deal found 14/9C$ 958

Sat 5/1211:40 a.m. -

1 stop10h 14m

Wed 9/1210:00 a.m. -

2 stops11h 55m

Deal found 17/9C$ 894

Tue 24/116:00 a.m. -

1 stop7h 00m

Sat 28/116:00 a.m. -

1 stop16h 51m

Deal found 18/9C$ 929

Mon 19/107:21 p.m. -

1 stop15h 23m

Thu 22/1012:30 p.m. -

1 stop11h 47m

Deal found 16/9C$ 940

Sat 7/116:00 a.m. -

1 stop7h 03m

Sun 15/112:10 p.m. -

Nonstop2h 16m

Deal found 15/9C$ 958

Sun 25/105:40 a.m. -

1 stop5h 39m

Wed 11/117:50 a.m. -

1 stop11h 14m

Deal found 17/9C$ 920

Wed 14/106:00 a.m. -

1 stop14h 26m

Sat 24/106:10 a.m. -

1 stop5h 16m

Deal found 14/9C$ 930

Tue 19/17:25 a.m. -

2 stops13h 05m

Sun 24/112:06 p.m. -

1 stop12h 53m

Deal found 18/9C$ 943

Wed 18/1110:53 a.m. -

1 stop4h 54m

Sun 22/112:10 p.m. -

Nonstop2h 16m

Deal found 14/9C$ 958

Thu 22/102:40 p.m. -

1 stop4h 00m

Mon 26/103:25 p.m. -

2 stops7h 15m

Deal found 17/9C$ 1,483

Sat 2/17:31 a.m. -

1 stop5h 29m

Tue 5/16:00 a.m. -

1 stop10h 46m

Deal found 17/9C$ 930

Tue 24/116:45 a.m. -

1 stop5h 55m

Sat 28/117:00 a.m. -

1 stop10h 26m

Deal found 14/9C$ 930

Tue 13/108:30 a.m. -

1 stop5h 10m

Tue 13/104:55 p.m. -

Nonstop2h 46m

Deal found 14/9C$ 972

Find flight deals from Missouri to Ontario

Round-trip from	C$ 495
One-way from	C$ 171

American Airlines
2/11-9/11
2 total stops
17h 15m total
Missouri to Ontario

Search Deals

14/10-31/12
2 total stops
43h 20m total
Missouri to Ontario

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisToronto

STL Lambert-St Louis - YYZ Toronto Pearson Intl

STLYYZ

Lambert-St Louis

Wed 14/10

6:35 p.m.-2:55 p.m.

2 stops43h 20m

Toronto Pearson Intl

Wed 31/12

12:00 a.m.-11:00 p.m.

Nonstop0h 00m

C$ 171

St. LouisToronto

STL Lambert-St Louis - YYZ Toronto Pearson Intl

STLYYZ

Lambert-St Louis

Sun 18/10

2:00 p.m.-9:55 p.m.

2 stops30h 55m

Toronto Pearson Intl

Wed 31/12

12:00 a.m.-11:00 p.m.

Nonstop0h 00m

C$ 250

Kansas CityToronto

MCI Kansas City - YYZ Toronto Pearson Intl

MCIYYZ

Kansas City

Fri 9/10

9:16 a.m.-2:25 p.m.

1 stop28h 09m

Toronto Pearson Intl

Wed 31/12

12:00 a.m.-11:00 p.m.

Nonstop0h 00m

C$ 263

St. LouisToronto

STL Lambert-St Louis - YYZ Toronto Pearson Intl

STLYYZ

Lambert-St Louis

Mon 19/10

6:35 p.m.-4:40 p.m.

2 stops21h 05m

Toronto Pearson Intl

Wed 31/12

12:00 a.m.-11:00 p.m.

Nonstop0h 00m

C$ 276

Kansas CityToronto

MCI Kansas City - YYZ Toronto Pearson Intl

MCIYYZ

Kansas City

Wed 14/10

12:19 p.m.-11:29 p.m.

1 stop10h 10m

Toronto Pearson Intl

Wed 31/12

12:00 a.m.-11:00 p.m.

Nonstop0h 00m

C$ 291

St. LouisToronto

STL Lambert-St Louis - YYZ Toronto Pearson Intl

STLYYZ

Lambert-St Louis

Thu 22/10

7:03 a.m.-4:47 p.m.

1 stop8h 44m

Toronto Pearson Intl

Wed 31/12

12:00 a.m.-11:00 p.m.

Nonstop0h 00m

C$ 297

Kansas CityToronto

MCI Kansas City - YYZ Toronto Pearson Intl

MCIYYZ

Kansas City

Mon 26/10

12:53 p.m.-12:40 a.m.

3 stops34h 47m

Toronto Pearson Intl

Wed 31/12

12:00 a.m.-11:00 p.m.

Nonstop0h 00m

C$ 301

Kansas CityOttawa

MCI Kansas City - YOW Ottawa

MCIYOW

Kansas City

Tue 6/10

8:32 p.m.-5:35 a.m.

3 stops32h 03m

Ottawa

Wed 31/12

12:00 a.m.-11:00 p.m.

Nonstop0h 00m

C$ 302

Kansas CityToronto

MCI Kansas City - YYZ Toronto Pearson Intl

MCIYYZ

Kansas City

Wed 28/10

8:43 p.m.-4:15 p.m.

2 stops42h 32m

Toronto Pearson Intl

Wed 31/12

12:00 a.m.-11:00 p.m.

Nonstop0h 00m

C$ 308

St. LouisToronto

STL Lambert-St Louis - YYZ Toronto Pearson Intl

STLYYZ

Lambert-St Louis

Sun 1/11

12:14 p.m.-1:40 p.m.

3 stops24h 26m

Toronto Pearson Intl

Wed 31/12

12:00 a.m.-11:00 p.m.

Nonstop0h 00m

C$ 311

Flights are sorted by cheapest round-trip flights first.

Deals found on 14/9

Showing 1-10 of 60 resultsSorted by cheapest first

...

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.

STL-YYZ

MCI-YYZ

STL-YUL

MCI-YUL

MCI-YOW

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

USMO-CAON

STL-YYZ

MCI-YYZ

STL-YUL

MCI-YUL

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

Currently, December is the cheapest month in which you can book a flight from Missouri to Region of Ontario (average of C$ 688). Flying from Missouri to Region of Ontario in January is currently the most expensive (average of C$ 1,045). 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?

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.

Weekly flight availability from Missouri to Region of Ontario

The most flights from USMO to CAON are scheduled on a Wednesday (5 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (3 on average).

How much does it cost to fly round-trip from Missouri to Region of Ontario?

Airfare is below average for this route at the moment.

Missouri to Region of Ontario flights typically cost between C$ 802 and C$ 1,169 in November.
The cheapest round-trip price found within the last 5 days was C$ 495 on American Airlines (2 Nov-9 Nov).

How far ahead should I book a flight from Missouri to Region of Ontario?

Booking 87 days in advance of your planned departure date is, on average, the best time to get cheap flights from Missouri to Region of Ontario. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

Reviews of airlines servicing Ontario

Read reviews from past customers who have flown Air Canada from Missouri to Ontario. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Air Canada

7.1

Good

11,649 reviews

Check prices

Reviews

1 / 20

2.0

Mediocre

Shawna,Sep 2025

DCA - YYZ

Business class cabin was *freezing*. Landing was so hard it injured my back - no apology or explanation given

Air Canada

7.1

Good

11,649 reviews

Air Canada

7.1

Good

11,649 reviews

Check prices

Reviews

1 / 20

2.0

Mediocre

Shawna,Sep 2025

DCA - YYZ

Business class cabin was *freezing*. Landing was so hard it injured my back - no apology or explanation given

Related info for your journey

How long is the flight from Missouri to Region of Ontario?
American Airlines, United Airlines, and Delta can get you from Missouri to Region of Ontario in just under 8h 44m. Your travel time can differ by up to 13h 54m. The distance from Missouri to Region of Ontario is about 1051 km. This flight may include one or multiple stops.
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 Air Canada (C$ 193), Delta (C$ 350), and United Airlines (C$ 366).
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, December is the cheapest month in which you can book a flight from Missouri to Region of Ontario (average of C$ 688). Flying from Missouri to Region of Ontario in January is currently the most expensive (average of C$ 1,045). 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

Alternative routes

Complete your trip

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Top destinations

Alternative routes for Missouri to Ontario

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Top airline flying from Missouri to Ontario

Airline	Cheapest	Average	Flexibility	On-time
Air Canada	CheapestC$ 331	AverageC$ 737	FlexibilityNo cancel fee	On-time67%	Search Air Canada flights

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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?

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Cheap flights from Missouri to Ontario from C$ 171

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 14/10. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Missouri to Ontario

Cheapest flights from Missouri to OntarioExplore 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 18 September 2026.

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 18 September 2026.

Best flights from Missouri to OntarioDiscover carefully curated flight deals from Missouri to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 18 September 2026.

Discover carefully curated flight deals from Missouri to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 18 September 2026.

Direct flights from Missouri to OntarioExplore direct flight options from Missouri to Ontario based on user searches, and compare prices and availability for your desired travel dates. Data last updated 18 September 2026.

Explore direct flight options from Missouri to Ontario based on user searches, and compare prices and availability for your desired travel dates. Data last updated 18 September 2026.

Last-minute flights from Missouri to OntarioDiscover last-minute flight deals from Missouri to Ontario. Data last updated 18 September 2026 and is based on user searches.

Discover last-minute flight deals from Missouri to Ontario. Data last updated 18 September 2026 and is based on user searches.

One-way flights from Missouri to OntarioSearch for one-way flight options from Missouri to Ontario. Find affordable one-way fares based on user searches. Data last updated 18 September 2026.

Search for one-way flight options from Missouri to Ontario. Find affordable one-way fares based on user searches. Data last updated 18 September 2026.

Find flight deals from Missouri to Ontario

Round-trip from

One-way from

Cheapflights Fare Finder

Use the filters below to find and compare flights from Missouri to Ontario that are best for you.

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.

Cheapflights Insights

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

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 18 September 2026.

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.

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 18 September 2026.

The most flights from USMO to CAON are scheduled on a Wednesday (5 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (3 on average).

How much does it cost to fly round-trip from Missouri to Region of Ontario?

Airfare is below average for this route at the moment.

Missouri to Region of Ontario flights typically cost between C$ 802 and C$ 1,169 in November.The cheapest round-trip price found within the last 5 days was C$ 495 on American Airlines (2 Nov-9 Nov).

How far ahead should I book a flight from Missouri to Region of Ontario?

Booking 87 days in advance of your planned departure date is, on average, the best time to get cheap flights from Missouri to Region of Ontario. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

Reviews of airlines servicing Ontario

Read reviews from past customers who have flown Air Canada from Missouri to Ontario. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

How long is the flight from Missouri to Region of Ontario?

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

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

How can I find direct flights from Missouri to Ontario?

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

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

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.

Complete your trip

Complete your trip to Ontario by adding a car rental and/or hotel reservation to your travel itinerary.

Direct flights to Canada

Book a non-stop flight to one of these other cities located in Canada.

Search flights from Missouri to Ontario by cabin class

Find flights from Missouri to Ontario, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Missouri and Ontario flights

Browse other Missouri and Ontario flight options. Last updated on 18 September 2026.

Popular flight searches

Check out other popular destinations found by fellow travellers in 2026

Find a return flight route from Ontario

Find the right flight back to Missouri after your stay in Ontario

Missouri to Ontario flights

Consider these flights travelling from Missouri to Ontario.

Top airline flying from Missouri to Ontario

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

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

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

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

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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 18 September 2026.

Best flights from Missouri to Ontario
Discover carefully curated flight deals from Missouri to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 18 September 2026.

Direct flights from Missouri to Ontario
Explore direct flight options from Missouri to Ontario based on user searches, and compare prices and availability for your desired travel dates. Data last updated 18 September 2026.

Last-minute flights from Missouri to Ontario
Discover last-minute flight deals from Missouri to Ontario. Data last updated 18 September 2026 and is based on user searches.

One-way flights from Missouri to Ontario
Search for one-way flight options from Missouri to Ontario. Find affordable one-way fares based on user searches. Data last updated 18 September 2026.

Missouri to Region of Ontario flights typically cost between C$ 802 and C$ 1,169 in November.
The cheapest round-trip price found within the last 5 days was C$ 495 on American Airlines (2 Nov-9 Nov).