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

A quick flight from Missouri to Region of Ontario can take about 5h 59m. American Airlines provides one of the quickest options available for as low as $361. 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 $110. However, be on the lookout for offers from Air Canada and United Airlines, 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.

$110+ 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 $533 and $689 in February. The cheapest round-trip price found within the last 3 days was $270 on American Airlines (Feb 14-Feb 21).

Home Search by date Vacation packages Hotels Flight deals Car rental Travel tips & news

Find cheap flights from Missouri to Ontario 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 Missouri to Ontario

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$270 (American Airlines)
One-way from	$110 (American Airlines)
Popular in	March
Cheapest in	January
Average price	$495
Good round-trip deal	$595 or less
Good one-way deal	$229 or less

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

Search Deals

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

Search Deals

From Missouri to Ontario

Search Deals

One-way flight from Missouri to Ontario

Search Deals

High demand for flights, 7% potential price rise

Search Deals

Cheapest flight prices on average. 2% potential price decrease ($12 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in October 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.

Search Deals

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 October 16, 2025.

Wed 11/126:00 amSTL - YYZ

1 stop14h 29mAmerican Airlines

Wed 11/196:00 amYYZ - STL

1 stop11h 47mAmerican Airlines

Deal found 10/14

$276

Fri 12/53:47 pmMCI - YYZ

1 stop7h 24mMultiple Airlines

Sun 12/78:30 pmYYZ - MCI

1 stop22h 16mMultiple Airlines

Deal found 10/13

$290

Fri 12/53:47 pmMCI - YYZ

1 stop7h 24mMultiple Airlines

Mon 12/89:35 amYYZ - MCI

1 stop9h 11mMultiple Airlines

Deal found 10/14

$291

Mon 12/156:51 pmMCI - YYZ

1 stop23h 11mMultiple Airlines

Wed 1/72:20 pmYYZ - MCI

1 stop18h 49mMultiple Airlines

Deal found 10/14

$304

Thu 12/113:47 pmMCI - YYZ

1 stop7h 24mMultiple Airlines

Wed 1/72:20 pmYYZ - MCI

1 stop18h 49mMultiple Airlines

Deal found 10/14

$305

Sat 12/136:51 pmMCI - YYZ

1 stop15h 52mMultiple Airlines

Wed 1/72:20 pmYYZ - MCI

1 stop18h 49mMultiple Airlines

Deal found 10/14

$307

Thu 12/112:57 pmSTL - YYZ

1 stop22h 43mMultiple Airlines

Sun 12/148:30 pmYYZ - STL

2 stops14h 22mMultiple Airlines

Deal found 10/16

$309

Wed 11/126:49 pmMCI - YYZ

2 stops24h 43mMultiple Airlines

Wed 11/192:20 pmYYZ - MCI

1 stop18h 45mMultiple Airlines

Deal found 10/15

$310

Sat 11/86:00 amSTL - YYZ

1 stop14h 29mAmerican Airlines

Tue 11/116:00 amYYZ - STL

1 stop10h 02mAmerican Airlines

Deal found 10/15

$313

Wed 11/127:45 pmSTL - YYZ

2 stops24h 35mMultiple Airlines

Wed 11/1911:15 amYYZ - STL

1 stop23h 43mMultiple Airlines

Deal found 10/14

$315

Fri 12/126:30 amMCI - YYZ

1 stop13h 02mMultiple Airlines

Wed 1/72:20 pmYYZ - MCI

1 stop18h 49mMultiple Airlines

Deal found 10/14

$323

Tue 12/166:30 amMCI - YYZ

1 stop12h 25mMultiple Airlines

Wed 1/72:20 pmYYZ - MCI

1 stop18h 49mMultiple Airlines

Deal found 10/14

$326

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 October 16, 2025.

Sat 2/146:04 amSTL - YYZ

1 stop8h 41mAmerican Airlines

Sat 2/216:15 amYYZ - STL

1 stop12h 41mAmerican Airlines

Deal found 10/16

$269

Fri 12/53:47 pmMCI - YYZ

1 stop7h 24mMultiple Airlines

Mon 12/89:35 amYYZ - MCI

1 stop9h 11mMultiple Airlines

Deal found 10/14

$291

Tue 4/74:05 pmSTL - YOW

1 stop5h 59mAir Canada

Wed 4/810:15 amYOW - STL

1 stop6h 09mAir Canada

Deal found 10/16

$361

Tue 3/38:00 amMCI - YOW

1 stop12h 14mUnited Airlines

Wed 3/45:14 pmYOW - MCI

1 stop5h 21mUnited Airlines

Deal found 10/13

$363

Tue 2/176:04 amSTL - YUL

1 stop7h 56mAmerican Airlines

Thu 2/1910:05 amYUL - STL

2 stops12h 39mAmerican Airlines

Deal found 10/16

$282

Thu 12/113:47 pmMCI - YYZ

1 stop7h 24mMultiple Airlines

Wed 1/72:20 pmYYZ - MCI

1 stop18h 49mMultiple Airlines

Deal found 10/14

$305

Thu 11/136:00 amSTL - YYZ

1 stop9h 04mAmerican Airlines

Thu 11/206:00 amYYZ - STL

1 stop8h 43mAmerican Airlines

Deal found 10/16

$289

Wed 11/126:49 pmMCI - YYZ

2 stops24h 43mMultiple Airlines

Wed 11/192:20 pmYYZ - MCI

1 stop18h 45mMultiple Airlines

Deal found 10/15

$310

Wed 11/1211:36 amMCI - YOW

1 stop4h 36mUnited Airlines

Sat 11/155:14 pmYOW - MCI

1 stop5h 36mUnited Airlines

Deal found 10/14

$363

Mon 12/14:02 pmSGF - YYZ

1 stop6h 57mDelta

Thu 12/46:05 amYYZ - SGF

2 stops10h 18mDelta

Deal found 10/15

$729

Thu 11/208:55 amMCI - YYZ

1 stop11h 24mMultiple Airlines

Wed 11/261:30 pmYYZ - MCI

2 stops31h 33mMultiple Airlines

Deal found 10/16

$342

Tue 2/177:41 amSTL - YUL

1 stop12h 20mUnited Airlines

Thu 2/199:25 amYUL - STL

1 stop12h 35mUnited Airlines

Deal found 10/15

$380

Sun 11/24:05 pmSTL - YOW

1 stop6h 03mAir Canada

Sun 11/910:20 amYOW - STL

1 stop6h 09mAir Canada

Deal found 10/16

$429

Sat 11/18:00 pmSTL - YYZ

1 stop14h 52mAmerican Airlines

Thu 11/66:00 amYYZ - STL

1 stop9h 53mAmerican Airlines

Deal found 10/16

$379

Mon 12/14:13 pmSTL - YYZ

1 stop7h 12mMultiple Airlines

Fri 12/57:55 pmYYZ - STL

2 stops15h 19mMultiple Airlines

Deal found 10/16

$345

Sat 2/147:41 amSTL - YUL

1 stop12h 20mUnited Airlines

Tue 2/179:25 amYUL - STL

1 stop12h 35mUnited Airlines

Deal found 10/15

$380

Sat 11/2912:58 pmMCI - YYZ

1 stop16h 22mMultiple Airlines

Sun 12/78:30 pmYYZ - MCI

1 stop22h 16mMultiple Airlines

Deal found 10/14

$345

Tue 3/38:21 amSTL - YYZ

1 stop7h 18mUnited Airlines

Wed 3/43:00 pmYYZ - STL

1 stop8h 56mUnited Airlines

Deal found 10/15

$404

Sat 11/156:00 amSTL - YYZ

1 stop9h 04mAmerican Airlines

Mon 11/174:30 pmYYZ - STL

1 stop7h 37mAmerican Airlines

Deal found 10/16

$416

Wed 2/257:00 amSTL - YOW

1 stop5h 34mMultiple Airlines

Sat 2/2810:20 amYOW - STL

1 stop6h 09mMultiple Airlines

Deal found 10/16

$354

Mon 1/1211:20 amSTL - YUL

1 stop8h 57mUnited Airlines

Wed 1/141:10 pmYUL - STL

1 stop10h 48mUnited Airlines

Deal found 10/15

$416

Thu 12/42:57 pmSTL - YYZ

1 stop30h 15mMultiple Airlines

Sun 12/78:00 pmYYZ - STL

1 stop13h 59mMultiple Airlines

Deal found 10/15

$358

Wed 12/35:05 amSTL - YUL

2 stops16h 35mAmerican Airlines

Sun 12/73:50 pmYUL - STL

1 stop17h 18mAmerican Airlines

Deal found 10/16

$439

Thu 10/307:00 amSTL - YOW

1 stop5h 32mUnited Airlines

Sun 11/95:14 pmYOW - STL

1 stop6h 31mUnited Airlines

Deal found 10/15

$423

Sun 12/710:35 amSGF - YYZ

1 stop9h 54mAmerican Airlines

Wed 12/176:00 amYYZ - SGF

1 stop8h 54mAmerican Airlines

Deal found 10/14

$457

Fri 11/77:33 pmMCI - YYZ

1 stop18h 07mMultiple Airlines

Sun 11/97:45 pmYYZ - MCI

2 stops23h 43mMultiple Airlines

Deal found 10/15

$384

Mon 1/129:57 amSTL - YUL

2 stops10h 45mUnited Airlines

Tue 1/139:15 amYUL - STL

2 stops12h 58mUnited Airlines

Deal found 10/15

$431

Tue 10/216:00 amSGF - YYZ

2 stops10h 54mDelta

Fri 10/3110:20 amYYZ - SGF

2 stops12h 49mDelta

Deal found 10/15

$804

Thu 11/204:13 pmSTL - YYZ

1 stop6h 58mMultiple Airlines

Sun 11/234:00 pmYYZ - STL

2 stops27h 36mMultiple Airlines

Deal found 10/15

$392

Fri 11/147:17 pmSGF - YYZ

1 stop14h 29mAmerican Airlines

Fri 11/216:00 amYYZ - SGF

1 stop13h 41mAmerican Airlines

Deal found 10/15

$479

Last-minute flights from Missouri to Ontario
Discover last-minute flight deals from Missouri to Ontario. Data last updated October 16, 2025 and is based on user searches.

Sat 11/18:28 pmMCI - YYZ

2 stops17h 52mMultiple Airlines

Mon 11/37:00 amYYZ - MCI

1 stop12h 28mMultiple Airlines

Deal found 10/15

$370

Wed 11/56:49 pmMCI - YYZ

2 stops34h 31mMultiple Airlines

Mon 11/107:00 amYYZ - MCI

1 stop12h 28mMultiple Airlines

Deal found 10/16

$352

Thu 11/61:23 pmMCI - YYZ

1 stop15h 57mMultiple Airlines

Mon 11/107:00 amYYZ - MCI

1 stop12h 28mMultiple Airlines

Deal found 10/16

$328

Sat 11/86:00 amSTL - YYZ

1 stop14h 29mAmerican Airlines

Tue 11/116:00 amYYZ - STL

1 stop10h 02mAmerican Airlines

Deal found 10/15

$313

Wed 11/126:00 amSTL - YYZ

1 stop14h 29mAmerican Airlines

Wed 11/196:00 amYYZ - STL

1 stop11h 47mAmerican Airlines

Deal found 10/14

$276

Wed 11/126:49 pmMCI - YYZ

2 stops24h 43mMultiple Airlines

Wed 11/192:20 pmYYZ - MCI

1 stop18h 45mMultiple Airlines

Deal found 10/15

$310

Wed 11/127:45 pmSTL - YYZ

2 stops24h 35mMultiple Airlines

Wed 11/1911:15 amYYZ - STL

1 stop23h 43mMultiple Airlines

Deal found 10/14

$315

Wed 11/1211:36 amMCI - YOW

1 stop4h 36mUnited Airlines

Sat 11/155:14 pmYOW - MCI

1 stop5h 36mUnited Airlines

Deal found 10/14

$363

Fri 11/144:56 pmSTL - YYZ

2 stops17h 47mMultiple Airlines

Fri 11/2111:15 amYYZ - STL

1 stop22h 42mMultiple Airlines

Deal found 10/16

$365

Thu 11/208:55 amMCI - YYZ

1 stop11h 24mMultiple Airlines

Wed 11/261:30 pmYYZ - MCI

2 stops31h 33mMultiple Airlines

Deal found 10/16

$342

Thu 11/2712:58 pmMCI - YYZ

1 stop9h 02mMultiple Airlines

Mon 12/15:15 pmYYZ - MCI

1 stop19h 48mMultiple Airlines

Deal found 10/16

$376

Sat 11/2912:58 pmMCI - YYZ

1 stop16h 22mMultiple Airlines

Sun 12/78:30 pmYYZ - MCI

1 stop22h 16mMultiple Airlines

Deal found 10/14

$345

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 October 16, 2025.

Mon 11/106:00 amSTL - YYZ

1 stop10h 40mAmerican Airlines

Deal found 10/16

$110

Tue 11/47:45 pmSTL - YYZ

3 stops27h 53mMultiple Airlines

Deal found 10/15

$136

Fri 12/54:05 pmSTL - YOW

1 stop6h 03mAir Canada

Deal found 10/16

$156

Mon 12/14:13 pmSTL - YYZ

1 stop6h 58mMultiple Airlines

Deal found 10/16

$162

Thu 11/67:02 pmSTL - YUL

2 stops20h 53mMultiple Airlines

Deal found 10/15

$162

Fri 10/248:38 pmMCI - YYZ

3 stops23h 14mMultiple Airlines

Deal found 10/13

$168

Fri 12/510:42 amSTL - YOW

2 stops36h 43mMultiple Airlines

Deal found 10/15

$169

Sun 11/26:21 pmSTL - YUL

2 stops21h 34mMultiple Airlines

Deal found 10/15

$179

Thu 11/2010:53 amSTL - YUL

1 stop10h 36mMultiple Airlines

Deal found 10/16

$180

Mon 11/107:45 pmSTL - YYZ

3 stops38h 58mMultiple Airlines

Deal found 10/16

$182

Fri 11/219:50 amSTL - YYZ

2 stops10h 17mMultiple Airlines

Deal found 10/16

$187

Fri 11/74:56 pmSTL - YUL

3 stops25h 43mMultiple Airlines

Deal found 10/15

$187

Fly from

Fly to

Route

Depart

Return

Price

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Sat 2/14

6:04 am-3:45 pm

1 stop8h 41m

Toronto Pearson Intl

Sat 2/21

6:15 am-5:56 pm

1 stop12h 41m

$269

St. LouisMontreal

STL - YUL

STLYUL

Lambert-St Louis

Tue 2/17

6:04 am-3:00 pm

1 stop7h 56m

Montreal Pierre Elliott Trudeau Intl

Thu 2/19

10:05 am-9:44 pm

2 stops12h 39m

$282

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Thu 11/13

6:00 am-4:04 pm

1 stop9h 04m

Toronto Pearson Intl

Thu 11/20

6:00 am-1:43 pm

1 stop8h 43m

$289

Kansas CityToronto

MCI - YYZ

MCIYYZ

Kansas City

Fri 12/5

3:47 pm-12:11 am

1 stop7h 24m

Toronto Pearson Intl

Mon 12/8

9:35 am-5:46 pm

1 stop9h 11m

$291

Kansas CityToronto

MCI - YYZ

MCIYYZ

Kansas City

Thu 12/11

3:47 pm-12:11 am

1 stop7h 24m

Toronto Pearson Intl

Wed 1/7

2:20 pm-8:09 am

1 stop18h 49m

$305

Kansas CityToronto

MCI - YYZ

MCIYYZ

Kansas City

Wed 11/12

6:49 pm-8:32 pm

2 stops24h 43m

Toronto Pearson Intl

Wed 11/19

2:20 pm-8:05 am

1 stop18h 45m

$310

Kansas CityToronto

MCI - YYZ

MCIYYZ

Kansas City

Thu 11/20

8:55 am-9:19 pm

1 stop11h 24m

Toronto Pearson Intl

Wed 11/26

1:30 pm-8:03 pm

2 stops31h 33m

$342

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Mon 12/1

4:13 pm-12:25 am

1 stop7h 12m

Toronto Pearson Intl

Fri 12/5

7:55 pm-10:14 am

2 stops15h 19m

$345

Kansas CityToronto

MCI - YYZ

MCIYYZ

Kansas City

Sat 11/29

12:58 pm-6:20 am

1 stop16h 22m

Toronto Pearson Intl

Sun 12/7

8:30 pm-5:46 pm

1 stop22h 16m

$345

St. LouisOttawa

STL - YOW

STLYOW

Lambert-St Louis

Wed 2/25

7:00 am-1:34 pm

1 stop5h 34m

Ottawa

Sat 2/28

10:20 am-3:29 pm

1 stop6h 09m

$354

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/16

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 February is currently the most expensive (average of $361). 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.

Weekly flight availability from Missouri to Region of Ontario

The most flights from USMO to CAON are scheduled on a Monday (4 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (4 on average).

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

8.0

Very good

7,984 reviews

Reviews

1 / 20

8.0

Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.

Delta

8.0

Very good

7,984 reviews

Delta

8.0

Very good

7,984 reviews

Reviews

1 / 20

8.0

Excellent

Matthew,Oct 2025

GSP - ATL

United Airlines

7.4

Good

8,982 reviews

Delta

8.0

Very good

7,984 reviews

Reviews

1 / 20

8.0

Excellent

Matthew,Oct 2025

GSP - ATL

American Airlines

7.2

Good

11,043 reviews

Delta

8.0

Very good

7,984 reviews

Reviews

1 / 20

8.0

Excellent

Matthew,Oct 2025

GSP - ATL

WestJet

7.2

Good

3,127 reviews

Delta

8.0

Very good

7,984 reviews

Reviews

1 / 20

8.0

Excellent

Matthew,Oct 2025

GSP - ATL

Air Canada

7.1

Good

10,306 reviews

Delta

8.0

Very good

7,984 reviews

Reviews

1 / 20

8.0

Excellent

Matthew,Oct 2025

GSP - 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 59m. American Airlines provides one of the quickest options available for as low as $361. 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 $110. However, be on the lookout for offers from Air Canada and United Airlines, 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 February is currently the most expensive (average of $361). 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$214	Average$736	FlexibilityNo cancel fee	On-time69%
Air Canada	Cheapest$220	Average$672	FlexibilityNo cancel fee	On-time67%
American Airlines	Cheapest$330	Average$637	FlexibilityNo cancel fee	On-time71%
WestJet	Cheapest$525	Average$732	FlexibilityNo cancel fee	On-time60%
Delta	Cheapest$567	Average$722	FlexibilityNo cancel fee	On-timeN/A

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.

$110+ 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 11/10. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Missouri to Ontario with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Missouri to Ontario

Keep the following information in mind while searching for Missouri to Ontario flight deals. Data was last updated October 16, 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

Find 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 October 16, 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 October 16, 2025.

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 October 16, 2025.

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 October 16, 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

100% Free

Book with Flexibility

Travel Smart

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 October 16, 2025.