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

A quick flight from Missouri to Region of Ontario can take about 5h 34m. American Airlines provides one of the quickest options available for as low as $362. The distance from Missouri to Region of Ontario is about 878 mi. 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 airline one-way is American Airlines, with whom users have recently found tickets for as low as $162. However, be on the lookout for offers from United Airlines and Air Canada, as they are both options that can get you from Missouri to Region of Ontario for a low price.

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.

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).

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.

$73+ Flights from Missouri to Ontario

Q: 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 $309 and $671 in December. The cheapest round-trip price found within the last 3 days was $229 on Multiple Airlines (Dec 14-Dec 16).

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Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

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Cheap 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 December 4, 2025.

Sun 12/149:54 amSTL - YYZ

1 stop27h 26mMultiple Airlines

Tue 12/167:10 amYYZ - STL

1 stop16h 23mMultiple Airlines

Deal found 12/3

$229

Wed 12/246:15 pmMCI - YYZ

1 stop28h 05mMultiple Airlines

Wed 12/317:40 amYYZ - MCI

1 stop10h 30mMultiple Airlines

Deal found 12/3

$279

Thu 12/186:15 pmMCI - YYZ

1 stop16h 28mMultiple Airlines

Tue 1/63:40 pmYYZ - MCI

1 stop26h 30mMultiple Airlines

Deal found 12/4

$303

Tue 12/93:30 pmSTL - YYZ

1 stop21h 43mMultiple Airlines

Sun 1/118:00 pmYYZ - STL

1 stop13h 05mMultiple Airlines

Deal found 12/2

$327

Sat 12/133:30 pmSTL - YYZ

1 stop7h 41mMultiple Airlines

Sun 12/148:00 pmYYZ - STL

1 stop13h 59mMultiple Airlines

Deal found 12/2

$352

Tue 12/93:30 pmSTL - YYZ

1 stop21h 43mMultiple Airlines

Fri 12/1212:50 pmYYZ - STL

1 stop10h 43mMultiple Airlines

Deal found 12/1

$359

Mon 12/83:30 pmSTL - YYZ

1 stop7h 55mMultiple Airlines

Fri 12/1212:50 pmYYZ - STL

1 stop10h 43mMultiple Airlines

Deal found 12/1

$362

Tue 12/93:30 pmSTL - YYZ

1 stop21h 43mMultiple Airlines

Sat 12/133:25 pmYYZ - STL

1 stop8h 08mMultiple Airlines

Deal found 12/1

$368

Mon 12/89:54 amSTL - YYZ

1 stop13h 31mMultiple Airlines

Sat 12/133:25 pmYYZ - STL

1 stop8h 08mMultiple Airlines

Deal found 12/1

$371

Mon 12/83:30 pmSTL - YYZ

1 stop7h 55mMultiple Airlines

Tue 12/97:15 amYYZ - STL

1 stop16h 18mMultiple Airlines

Deal found 12/1

$374

Mon 12/83:30 pmSTL - YYZ

1 stop7h 55mMultiple Airlines

Thu 12/117:15 amYYZ - STL

2 stops16h 18mMultiple Airlines

Deal found 12/1

$377

Wed 12/313:47 pmMCI - YYZ

1 stop7h 24mMultiple Airlines

Wed 1/73:40 pmYYZ - MCI

1 stop19h 51mMultiple Airlines

Deal found 12/1

$393

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 December 4, 2025.

Tue 1/275:42 pmSTL - YYZ

1 stop19h 34mMultiple Airlines

Thu 1/297:10 amYYZ - STL

1 stop17h 23mMultiple Airlines

Deal found 12/2

$254

Sat 2/1410:04 amSTL - YYZ

1 stop10h 25mAmerican Airlines

Sat 2/216:00 amYYZ - STL

1 stop8h 56mAmerican Airlines

Deal found 12/1

$269

Fri 1/164:05 pmSTL - YYZ

Nonstop2h 01mAir Canada

Sun 1/182:00 pmYYZ - STL

Nonstop2h 29mAir Canada

Deal found 12/4

$331

Wed 3/47:00 amSTL - YOW

1 stop5h 34mUnited Airlines

Wed 3/185:11 pmYOW - STL

1 stop5h 39mUnited Airlines

Deal found 12/4

$362

Tue 4/1410:45 amSTL - YYZ

1 stop3h 33mDelta

Mon 4/207:12 pmYYZ - STL

1 stop4h 49mDelta

Deal found 12/3

$416

Mon 1/262:45 pmMCI - YYZ

1 stop23h 50mAlaska Airlines

Wed 1/284:45 pmYYZ - MCI

1 stop22h 05mAlaska Airlines

Deal found 12/1

$418

Sun 1/181:35 pmSTL - YYZ

1 stop16h 12mMultiple Airlines

Thu 1/227:15 amYYZ - STL

1 stop28h 08mMultiple Airlines

Deal found 12/4

$294

Tue 1/206:00 amSTL - YYZ

1 stop9h 03mAmerican Airlines

Fri 1/306:00 amYYZ - STL

1 stop13h 14mAmerican Airlines

Deal found 12/3

$295

Tue 1/205:42 pmSTL - YYZ

1 stop19h 34mMultiple Airlines

Fri 1/307:15 amYYZ - STL

2 stops17h 18mMultiple Airlines

Deal found 12/3

$296

Sun 1/184:05 pmSTL - YOW

1 stop6h 03mAir Canada

Wed 1/219:15 amYOW - STL

1 stop7h 14mAir Canada

Deal found 12/2

$361

Sun 1/1110:00 amMCI - YOW

1 stop10h 18mUnited Airlines

Thu 1/156:20 amYOW - MCI

1 stop5h 12mUnited Airlines

Deal found 12/3

$363

Thu 12/186:15 pmMCI - YYZ

1 stop16h 28mMultiple Airlines

Tue 1/63:40 pmYYZ - MCI

1 stop26h 30mMultiple Airlines

Deal found 12/4

$303

Sat 1/173:01 pmMCI - YYZ

1 stop18h 52mAmerican Airlines

Mon 1/197:04 pmYYZ - MCI

1 stop16h 03mAmerican Airlines

Deal found 12/1

$346

Sat 1/174:05 pmSTL - YOW

1 stop6h 03mAir Canada

Sat 1/249:15 amYOW - STL

1 stop7h 14mAir Canada

Deal found 12/3

$361

Thu 3/57:41 amSTL - YOW

1 stop12h 37mUnited Airlines

Wed 3/185:11 pmYOW - STL

1 stop4h 49mUnited Airlines

Deal found 12/4

$363

Sat 1/173:32 pmMCI - YYZ

1 stop23h 03mAlaska Airlines

Sat 1/244:45 pmYYZ - MCI

1 stop21h 58mAlaska Airlines

Deal found 12/2

$429

Wed 3/44:05 pmSTL - YOW

1 stop6h 03mAir Canada

Wed 3/189:15 amYOW - STL

1 stop7h 14mAir Canada

Deal found 12/4

$361

Sun 1/185:11 pmSTL - YOW

1 stop23h 02mMultiple Airlines

Sun 1/259:30 amYOW - STL

1 stop24h 51mMultiple Airlines

Deal found 12/4

$331

Sat 1/1711:20 amSTL - YOW

1 stop4h 52mUnited Airlines

Sat 1/242:15 pmYOW - STL

2 stops7h 58mUnited Airlines

Deal found 12/3

$372

Mon 1/126:00 amSTL - YYZ

1 stop9h 35mAmerican Airlines

Mon 1/197:04 pmYYZ - STL

1 stop16h 16mAmerican Airlines

Deal found 12/2

$379

Wed 1/212:45 pmMCI - YYZ

1 stop23h 50mAlaska Airlines

Wed 1/284:45 pmYYZ - MCI

1 stop22h 05mAlaska Airlines

Deal found 12/2

$429

Sun 1/188:05 amSTL - YOW

1 stop8h 07mUnited Airlines

Wed 1/212:15 pmYOW - STL

2 stops7h 58mUnited Airlines

Deal found 12/2

$372

Wed 12/246:15 pmMCI - YYZ

2 stops22h 43mMultiple Airlines

Wed 12/317:40 amYYZ - MCI

1 stop10h 30mMultiple Airlines

Deal found 12/3

$353

Fri 1/232:45 pmMCI - YYZ

1 stop23h 50mAlaska Airlines

Mon 1/264:45 pmYYZ - MCI

1 stop22h 05mAlaska Airlines

Deal found 12/2

$429

Mon 1/264:05 pmSTL - YYZ

Nonstop2h 01mAir Canada

Thu 1/292:00 pmYYZ - STL

Nonstop2h 29mAir Canada

Deal found 12/3

$391

Sat 1/3111:20 amSTL - YUL

1 stop22h 00mUnited Airlines

Wed 2/41:10 pmYUL - STL

1 stop10h 48mUnited Airlines

Deal found 12/2

$380

Sat 1/3111:05 amSTL - YUL

1 stop27h 03mAmerican Airlines

Wed 2/47:00 amYUL - STL

2 stops15h 15mAmerican Airlines

Deal found 12/1

$418

Fri 2/208:45 amSTL - YYZ

2 stops13h 35mMultiple Airlines

Mon 2/237:15 amYYZ - STL

1 stop16h 18mMultiple Airlines

Deal found 12/2

$364

Mon 1/267:27 pmMCI - YUL

1 stop12h 17mDelta

Thu 1/292:15 pmYUL - MCI

1 stop9h 49mDelta

Deal found 12/1

$597

Fri 1/303:19 pmCOU - YUL

1 stop22h 49mAmerican Airlines

Fri 2/63:50 pmYUL - COU

1 stop30h 20mAmerican Airlines

Deal found 12/3

$435

Last-minute flights from Missouri to Ontario
Discover last-minute flight deals from Missouri to Ontario. Data last updated December 4, 2025 and is based on user searches.

Tue 12/93:30 pmSTL - YYZ

1 stop21h 43mMultiple Airlines

Sun 1/118:00 pmYYZ - STL

1 stop13h 05mMultiple Airlines

Deal found 12/2

$327

Sun 12/149:54 amSTL - YYZ

1 stop27h 26mMultiple Airlines

Tue 12/167:10 amYYZ - STL

1 stop16h 23mMultiple Airlines

Deal found 12/3

$229

Thu 12/186:15 pmMCI - YYZ

1 stop16h 28mMultiple Airlines

Tue 1/63:40 pmYYZ - MCI

1 stop26h 30mMultiple Airlines

Deal found 12/4

$303

Wed 12/246:15 pmMCI - YYZ

1 stop28h 05mMultiple Airlines

Wed 12/317:40 amYYZ - MCI

1 stop10h 30mMultiple Airlines

Deal found 12/3

$279

Mon 1/128:50 amSTL - YYZ

1 stop14h 35mMultiple Airlines

Mon 1/193:40 pmYYZ - STL

2 stops40h 11mMultiple Airlines

Deal found 12/2

$271

Fri 1/164:05 pmSTL - YYZ

Nonstop2h 01mAir Canada

Sun 1/182:00 pmYYZ - STL

Nonstop2h 29mAir Canada

Deal found 12/4

$331

Sat 1/173:01 pmMCI - YYZ

1 stop18h 52mAmerican Airlines

Mon 1/197:04 pmYYZ - MCI

1 stop16h 03mAmerican Airlines

Deal found 12/1

$346

Sun 1/181:35 pmSTL - YYZ

2 stops16h 25mMultiple Airlines

Thu 1/227:15 amYYZ - STL

1 stop28h 08mMultiple Airlines

Deal found 12/4

$289

Sun 1/185:11 pmSTL - YOW

1 stop23h 02mMultiple Airlines

Sun 1/259:30 amYOW - STL

1 stop24h 51mMultiple Airlines

Deal found 12/4

$331

Tue 1/206:00 amSTL - YYZ

1 stop9h 03mAmerican Airlines

Fri 1/306:00 amYYZ - STL

1 stop13h 14mAmerican Airlines

Deal found 12/3

$295

Tue 1/205:42 pmSTL - YYZ

1 stop19h 34mMultiple Airlines

Fri 1/307:15 amYYZ - STL

2 stops17h 18mMultiple Airlines

Deal found 12/3

$296

Tue 1/275:42 pmSTL - YYZ

1 stop19h 34mMultiple Airlines

Thu 1/297:10 amYYZ - STL

1 stop17h 23mMultiple Airlines

Deal found 12/2

$254

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 December 4, 2025.

Wed 1/215:42 pmSTL - YYZ

1 stop19h 38mMultiple Airlines

Deal found 12/1

$73

Sun 1/115:11 pmSTL - YYZ

2 stops26h 00mMultiple Airlines

Deal found 12/3

$81

Wed 2/1110:50 amMCI - YYZ

1 stop9h 33mAmerican Airlines

Deal found 12/3

$116

Sat 2/2111:53 amMCI - YYZ

1 stop8h 36mAmerican Airlines

Deal found 12/2

$122

Fri 1/165:11 pmSTL - YYZ

1 stop20h 09mMultiple Airlines

Deal found 12/2

$129

Fri 2/207:49 pmMCI - YYZ

1 stop14h 07mAmerican Airlines

Deal found 12/3

$134

Fri 1/236:00 amSTL - YYZ

1 stop9h 03mAmerican Airlines

Deal found 12/4

$136

Wed 2/117:00 amMCI - YYZ

2 stops35h 36mMultiple Airlines

Deal found 12/3

$137

Sat 1/173:01 pmMCI - YYZ

1 stop18h 52mAmerican Airlines

Deal found 12/3

$139

Sun 12/143:30 pmSTL - YUL

1 stop8h 00mMultiple Airlines

Deal found 12/2

$148

Fri 1/237:39 pmSTL - YYZ

2 stops24h 18mMultiple Airlines

Deal found 12/4

$149

Sat 2/218:46 pmMCI - YYZ

2 stops32h 57mMultiple Airlines

Deal found 12/2

$156

Find flight deals from Missouri to Ontario

Most accurate provider	eDreams 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$229 (Kiwi.com)
One-way from	$73 (Trip.com)
Popular in	November
Cheapest in	January
Average price	$379
Good round-trip deal	$578 or less
Good one-way deal	$399 or less

Provider with most accurate pricing for Lambert-St Louis-Toronto (YTO) flight deals.

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Provider most trusted by Cheapflights users for Lambert-St Louis-Toronto (YTO) flights.

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From Missouri to Ontario

Search Deals

One-way flight from Missouri to Ontario

Search Deals

Highest demand for flights based on searches. 12% potential increase in price ($68 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 4% potential price decrease ($22 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in December 2025

Search Deals

Price to beat on a round-trip flight from Missouri to Ontario.

Search Deals

Price to beat on a one-way flight from Missouri to Ontario.

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Fly from

Fly to

Route

Depart

Return

Price

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Tue 1/27

5:42 pm-2:16 pm

1 stop19h 34m

Toronto Pearson Intl

Thu 1/29

7:10 am-11:33 pm

1 stop17h 23m

$254

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Sat 2/14

10:04 am-9:29 pm

1 stop10h 25m

Toronto Pearson Intl

Sat 2/21

6:00 am-1:56 pm

1 stop8h 56m

$269

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Sun 1/18

1:35 pm-6:47 am

1 stop16h 12m

Toronto Pearson Intl

Thu 1/22

7:15 am-10:23 am

1 stop28h 08m

$294

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Tue 1/20

6:00 am-4:03 pm

1 stop9h 03m

Toronto Pearson Intl

Fri 1/30

6:00 am-6:14 pm

1 stop13h 14m

$295

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Tue 1/20

5:42 pm-2:16 pm

1 stop19h 34m

Toronto Pearson Intl

Fri 1/30

7:15 am-11:33 pm

2 stops17h 18m

$296

Kansas CityToronto

MCI - YYZ

MCIYYZ

Kansas City

Thu 12/18

6:15 pm-11:43 am

1 stop16h 28m

Toronto Pearson Intl

Tue 1/6

3:40 pm-5:10 pm

1 stop26h 30m

$303

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Fri 1/16

4:05 pm-7:06 pm

Nonstop2h 01m

Toronto Pearson Intl

Sun 1/18

2:00 pm-3:29 pm

Nonstop2h 29m

$331

St. LouisOttawa

STL - YOW

STLYOW

Lambert-St Louis

Sun 1/18

5:11 pm-5:13 pm

1 stop23h 02m

Ottawa

Sun 1/25

9:30 am-9:21 am

1 stop24h 51m

$331

Kansas CityToronto

MCI - YYZ

MCIYYZ

Kansas City

Sat 1/17

3:01 pm-10:53 am

1 stop18h 52m

Toronto Pearson Intl

Mon 1/19

7:04 pm-10:07 am

1 stop16h 03m

$346

Kansas CityToronto

MCI - YYZ

MCIYYZ

Kansas City

Wed 12/24

6:15 pm-5:58 pm

2 stops22h 43m

Toronto Pearson Intl

Wed 12/31

7:40 am-5:10 pm

1 stop10h 30m

$353

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/3

Showing 1-10 of 60 results

...

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.

Cheapflights Insights

Everything you need to know about your flight from Missouri to Ontario

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

Currently, June is the cheapest month in which you can book a flight from Missouri to Region of Ontario (average of $179). Flying from Missouri to Region of Ontario in October is currently the most expensive (average of $516). 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?

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.

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

Reviews of airlines servicing Ontario

See what other customers who have flown with Delta, United Airlines, and American Airlines from Missouri to Ontario have to say. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Delta

7.9

Good

8,011 reviews

Reviews

1 / 20

6.0

Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

Delta

7.9

Good

8,011 reviews

Delta

7.9

Good

8,011 reviews

Reviews

1 / 20

6.0

Good

Jim,Nov 2025

AVL - ATL

United Airlines

7.4

Good

9,066 reviews

Delta

7.9

Good

8,011 reviews

Reviews

1 / 20

6.0

Good

Jim,Nov 2025

AVL - ATL

American Airlines

7.2

Good

11,047 reviews

Delta

7.9

Good

8,011 reviews

Reviews

1 / 20

6.0

Good

Jim,Nov 2025

AVL - ATL

WestJet

7.2

Good

3,193 reviews

Delta

7.9

Good

8,011 reviews

Reviews

1 / 20

6.0

Good

Jim,Nov 2025

AVL - ATL

Air Canada

7.1

Good

10,500 reviews

Delta

7.9

Good

8,011 reviews

Reviews

1 / 20

6.0

Good

Jim,Nov 2025

AVL - ATL

Related info for your journey

How long is the flight from Missouri to Region of Ontario?
A quick flight from Missouri to Region of Ontario can take about 5h 34m. American Airlines provides one of the quickest options available for as low as $362. The distance from Missouri to Region of Ontario is about 878 mi. 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 airline one-way is American Airlines, with whom users have recently found tickets for as low as $162. However, be on the lookout for offers from United Airlines and Air Canada, 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, June is the cheapest month in which you can book a flight from Missouri to Region of Ontario (average of $179). Flying from Missouri to Region of Ontario in October is currently the most expensive (average of $516). 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

Top 5 airlines flying from Missouri to Ontario

Airline	Cheapest	Average	Flexibility	On-time
United Airlines	Cheapest$199	Average$730	FlexibilityNo cancel fee	On-time69%
Air Canada	Cheapest$220	Average$685	FlexibilityNo cancel fee	On-time67%
American Airlines	Cheapest$270	Average$620	FlexibilityNo cancel fee	On-time71%
WestJet	Cheapest$525	Average$748	FlexibilityNo cancel fee	On-time60%
Delta	Cheapest$567	Average$722	FlexibilityNo cancel fee	On-timeN/A

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$73+ 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 1/21. Fares are subject to change and may not be available on all flights or dates of travel.

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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 December 4, 2025.

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 December 4, 2025.

Find flight deals from Missouri to Ontario

Keep the following information in mind while searching for Missouri to Ontario flight deals. Data was last updated December 4, 2025.

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

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

Everything you need to know about your flight from Missouri to Ontario

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 December 4, 2025.

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

Reviews of airlines servicing Ontario

See what other customers who have flown with Delta, United Airlines, and American Airlines from Missouri to Ontario have to say. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

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.

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.

Top 5 airlines flying from Missouri to Ontario

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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 December 4, 2025.