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

Airlines like American Airlines, United Airlines, and Delta fly from Region of Ontario to Missouri in about 8h 56m. The time it takes to get you to your destination can typically vary by up to 16h 53m. The distance between Region of Ontario and Missouri is about 1556 km. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

In terms of precipitation, rainfall in Missouri ranges from 28.0 - 132.0 mm per month. May is typically the wettest month, when rainfall can reach 132.0 mm. January is typically the driest time to visit Missouri when rainfall is around 28.0 mm.

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 26.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -2.0 C).

What is the cheapest month to fly from Region of Ontario to Missouri?

Our data shows that November tends to be the cheapest month to fly to Missouri from Region of Ontario. Users have commonly found prices around C$ 770 for the month, but tickets can be as low as C$ 559. Due to multiple factors, prepare for potentially higher prices in December.

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.

C$ 210+ Cheap Flights from Ontario to Missouri

Cheap flight deals from Ontario to Missouri

Round-trip from	C$ 396
One-way from	C$ 210
Popular in	December
Cheapest in	November
Average price	C$ 837
Good round-trip deal	C$ 540 or less
Good one-way deal	C$ 875 or less

30/10-6/11
3 total stops
72h 30m total
Ontario to Missouri

Search Deals

29/10
2 total stops
26h 27m total
Ontario to Missouri

Search Deals

Highest demand for flights based on searches. 5% potential increase in price (C$ 61 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease (C$ 22 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in September 2025

Search Deals

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

Search Deals

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

Search Deals

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 15 September 2025.

Fri 17/108:05 p.m.YYZ - STL

1 stop20h 51mMultiple Airlines

Mon 20/109:59 p.m.STL - YYZ

2 stops23h 53mMultiple Airlines

Deal found 12/9C$ 363

Thu 6/119:45 a.m.YYZ - STL

1 stop29h 12mMultiple Airlines

Mon 10/119:07 p.m.STL - YYZ

1 stop21h 48mMultiple Airlines

Deal found 13/9C$ 392

Thu 30/109:45 a.m.YYZ - STL

1 stop29h 12mMultiple Airlines

Thu 6/116:22 p.m.STL - YYZ

2 stops43h 18mMultiple Airlines

Deal found 14/9C$ 396

Wed 1/1012:00 p.m.YYZ - MCI

2 stops28h 10mMultiple Airlines

Mon 6/105:11 p.m.MCI - YYZ

1 stop19h 54mMultiple Airlines

Deal found 14/9C$ 410

Mon 20/1010:40 a.m.YYZ - STL

2 stops23h 27mMultiple Airlines

Thu 23/1010:57 a.m.STL - YYZ

1 stop26h 08mMultiple Airlines

Deal found 15/9C$ 410

Wed 15/106:30 a.m.YYZ - MCI

2 stops29h 12mMultiple Airlines

Wed 22/102:55 p.m.MCI - YYZ

1 stop28h 03mMultiple Airlines

Deal found 15/9C$ 419

Fri 3/107:45 p.m.YYZ - MCI

1 stop20h 25mMultiple Airlines

Tue 7/102:55 p.m.MCI - YYZ

2 stops14h 57mMultiple Airlines

Deal found 13/9C$ 421

Mon 13/1010:00 a.m.YYZ - MCI

2 stops29h 00mMultiple Airlines

Mon 20/105:11 p.m.MCI - YYZ

1 stop19h 54mMultiple Airlines

Deal found 15/9C$ 432

Thu 30/1010:55 a.m.YYZ - MCI

1 stop12h 04mMultiple Airlines

Thu 6/1111:12 a.m.MCI - YYZ

2 stops29h 00mMultiple Airlines

Deal found 15/9C$ 437

Wed 22/109:45 a.m.YYZ - MCI

2 stops25h 57mMultiple Airlines

Sun 26/105:15 a.m.MCI - YYZ

1 stop7h 50mMultiple Airlines

Deal found 15/9C$ 439

Thu 13/117:40 a.m.YYZ - MCI

1 stop28h 28mMultiple Airlines

Tue 18/117:00 a.m.MCI - YYZ

1 stop11h 55mMultiple Airlines

Deal found 13/9C$ 448

Mon 29/94:00 p.m.YYZ - STL

2 stops27h 36mMultiple Airlines

Thu 2/1010:35 a.m.STL - YYZ

1 stop9h 20mMultiple Airlines

Deal found 15/9C$ 448

Best flights from Ontario to Missouri
Discover carefully curated flight deals from Ontario to Missouri that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 15 September 2025.

Thu 30/109:45 a.m.YYZ - STL

1 stop29h 12mMultiple Airlines

Thu 6/116:22 p.m.STL - YYZ

2 stops43h 18mMultiple Airlines

Deal found 14/9C$ 396

Tue 28/1012:30 p.m.YUL - STL

1 stop8h 56mAmerican Airlines

Tue 4/116:00 a.m.STL - YUL

2 stops15h 39mAmerican Airlines

Deal found 13/9C$ 506

Sat 25/102:15 p.m.YYZ - STL

Nonstop2h 03mAir Canada

Sun 2/114:05 p.m.STL - YYZ

Nonstop2h 01mAir Canada

Deal found 13/9C$ 558

Fri 24/1011:55 a.m.YOW - STL

2 stops25h 49mUnited Airlines

Tue 28/101:35 p.m.STL - YOW

2 stops19h 51mUnited Airlines

Deal found 14/9C$ 600

Wed 5/117:30 p.m.YUL - STL

1 stop13h 43mDelta

Wed 12/119:35 a.m.STL - YUL

1 stop8h 05mDelta

Deal found 14/9C$ 642

Fri 17/108:05 p.m.YYZ - STL

1 stop20h 51mMultiple Airlines

Mon 20/106:05 p.m.STL - YYZ

1 stop27h 35mMultiple Airlines

Deal found 12/9C$ 408

Wed 1/1012:00 p.m.YYZ - MCI

2 stops28h 10mMultiple Airlines

Mon 6/105:11 p.m.MCI - YYZ

1 stop19h 54mMultiple Airlines

Deal found 14/9C$ 410

Wed 29/107:50 a.m.YUL - STL

2 stops11h 30mAmerican Airlines

Wed 5/116:00 a.m.STL - YUL

2 stops15h 39mAmerican Airlines

Deal found 14/9C$ 508

Fri 3/107:45 p.m.YYZ - MCI

1 stop20h 25mMultiple Airlines

Tue 7/102:55 p.m.MCI - YYZ

2 stops14h 57mMultiple Airlines

Deal found 13/9C$ 421

Thu 6/112:00 p.m.YYZ - STL

Nonstop2h 29mAir Canada

Mon 10/114:05 p.m.STL - YYZ

Nonstop2h 01mAir Canada

Deal found 13/9C$ 579

Thu 6/119:45 a.m.YYZ - STL

2 stops24h 22mMultiple Airlines

Mon 10/112:12 p.m.STL - YYZ

1 stop8h 59mMultiple Airlines

Deal found 13/9C$ 435

Fri 5/1210:58 a.m.YYZ - STL

1 stop11h 49mAmerican Airlines

Sun 7/126:00 a.m.STL - YYZ

1 stop3h 56mAmerican Airlines

Deal found 14/9C$ 546

Direct flights from Ontario to Missouri
Explore direct flight options from Ontario to Missouri based on user searches, and compare prices and availability for your desired travel dates. Data last updated 15 September 2025.

Sat 25/102:15 p.m.YYZ - STL

Nonstop2h 03mAir Canada

Sun 2/114:05 p.m.STL - YYZ

Nonstop2h 01mAir Canada

Deal found 14/9C$ 558

Wed 15/102:15 p.m.YYZ - STL

Nonstop2h 03mAir Canada

Tue 21/109:15 a.m.STL - YYZ

Nonstop1h 56mAir Canada

Deal found 13/9C$ 579

Mon 24/112:00 p.m.YYZ - STL

Nonstop2h 29mAir Canada

Fri 28/114:05 p.m.STL - YYZ

Nonstop2h 01mAir Canada

Deal found 15/9C$ 648

Wed 29/102:00 p.m.YYZ - STL

Nonstop2h 29mUnited Airlines

Wed 5/114:05 p.m.STL - YYZ

Nonstop2h 01mUnited Airlines

Deal found 14/9C$ 652

Thu 2/102:15 p.m.YYZ - STL

Nonstop2h 03mUnited Airlines

Sun 5/109:15 a.m.STL - YYZ

Nonstop1h 56mUnited Airlines

Deal found 14/9C$ 653

Fri 17/102:15 p.m.YYZ - STL

Nonstop2h 03mAir Canada

Mon 20/109:15 a.m.STL - YYZ

Nonstop1h 56mAir Canada

Deal found 12/9C$ 669

Fri 17/102:15 p.m.YYZ - STL

Nonstop2h 03mAir Canada

Sun 19/109:15 a.m.STL - YYZ

Nonstop1h 56mAir Canada

Deal found 14/9C$ 676

Tue 3/32:00 p.m.YYZ - STL

Nonstop2h 29mAir Canada

Wed 4/34:05 p.m.STL - YYZ

Nonstop2h 01mAir Canada

Deal found 13/9C$ 677

Sat 4/102:15 p.m.YYZ - STL

Nonstop2h 03mAir Canada

Mon 6/109:15 a.m.STL - YYZ

Nonstop1h 56mAir Canada

Deal found 15/9C$ 689

Wed 26/112:00 p.m.YYZ - STL

Nonstop2h 29mAir Canada

Fri 28/114:05 p.m.STL - YYZ

Nonstop2h 01mAir Canada

Deal found 15/9C$ 700

Mon 24/112:00 p.m.YYZ - STL

Nonstop2h 29mAir Canada

Sun 30/114:05 p.m.STL - YYZ

Nonstop2h 01mAir Canada

Deal found 15/9C$ 717

Wed 26/112:00 p.m.YYZ - STL

Nonstop2h 29mAir Canada

Sun 30/114:05 p.m.STL - YYZ

Nonstop2h 01mAir Canada

Deal found 15/9C$ 769

Last-minute flights from Ontario to Missouri
Discover last-minute flight deals from Ontario to Missouri. Data last updated 15 September 2025 and is based on user searches.

Mon 29/94:00 p.m.YYZ - STL

2 stops27h 36mMultiple Airlines

Thu 2/1010:35 a.m.STL - YYZ

1 stop9h 20mMultiple Airlines

Deal found 15/9C$ 448

Wed 1/1012:00 p.m.YYZ - MCI

2 stops28h 10mMultiple Airlines

Mon 6/105:11 p.m.MCI - YYZ

1 stop19h 54mMultiple Airlines

Deal found 14/9C$ 410

Thu 2/106:30 a.m.YYZ - MCI

1 stop28h 48mMultiple Airlines

Mon 6/105:15 p.m.MCI - YYZ

2 stops19h 50mMultiple Airlines

Deal found 15/9C$ 449

Fri 3/107:45 p.m.YYZ - MCI

1 stop20h 25mMultiple Airlines

Tue 7/102:55 p.m.MCI - YYZ

2 stops14h 57mMultiple Airlines

Deal found 13/9C$ 421

Sat 4/106:30 a.m.YYZ - STL

1 stop28h 32mMultiple Airlines

Mon 6/109:32 p.m.STL - YYZ

1 stop15h 20mMultiple Airlines

Deal found 15/9C$ 466

Mon 13/1010:00 a.m.YYZ - MCI

2 stops29h 00mMultiple Airlines

Mon 20/105:11 p.m.MCI - YYZ

1 stop19h 54mMultiple Airlines

Deal found 15/9C$ 432

Wed 15/106:30 a.m.YYZ - MCI

2 stops29h 12mMultiple Airlines

Wed 22/102:55 p.m.MCI - YYZ

1 stop28h 03mMultiple Airlines

Deal found 15/9C$ 419

Mon 20/1010:40 a.m.YYZ - STL

2 stops23h 27mMultiple Airlines

Thu 23/1010:57 a.m.STL - YYZ

1 stop26h 08mMultiple Airlines

Deal found 15/9C$ 410

Wed 22/109:45 a.m.YYZ - MCI

2 stops25h 57mMultiple Airlines

Sun 26/105:15 a.m.MCI - YYZ

1 stop7h 50mMultiple Airlines

Deal found 15/9C$ 439

Tue 28/1012:40 p.m.YYZ - MCI

1 stop26h 20mMultiple Airlines

Tue 4/112:55 p.m.MCI - YYZ

2 stops29h 16mMultiple Airlines

Deal found 13/9C$ 456

Thu 30/109:45 a.m.YYZ - STL

1 stop29h 12mMultiple Airlines

Thu 6/116:22 p.m.STL - YYZ

2 stops43h 18mMultiple Airlines

Deal found 14/9C$ 396

Thu 30/1010:55 a.m.YYZ - MCI

1 stop12h 04mMultiple Airlines

Thu 6/1111:12 a.m.MCI - YYZ

2 stops29h 00mMultiple Airlines

Deal found 15/9C$ 437

One-way flights from Ontario to Missouri
Search for one-way flight options from Ontario to Missouri. Find affordable one-way fares based on user searches. Data last updated 15 September 2025.

Wed 29/1012:30 p.m.YYZ - STL

2 stops26h 27mMultiple Airlines

Deal found 14/9C$ 210

Thu 30/109:45 a.m.YYZ - STL

1 stop29h 12mMultiple Airlines

Deal found 14/9C$ 217

Thu 6/119:45 a.m.YYZ - STL

1 stop29h 12mMultiple Airlines

Deal found 14/9C$ 220

Mon 13/104:00 p.m.YYZ - STL

2 stops42h 07mMultiple Airlines

Deal found 15/9C$ 239

Tue 28/109:40 a.m.YYZ - MCI

3 stops29h 20mMultiple Airlines

Deal found 13/9C$ 243

Wed 29/1010:55 a.m.YYZ - MCI

1 stop10h 50mMultiple Airlines

Deal found 14/9C$ 246

Wed 8/102:00 p.m.YYZ - MCI

3 stops21h 42mMultiple Airlines

Deal found 15/9C$ 249

Wed 1/1012:00 p.m.YYZ - MCI

3 stops26h 48mMultiple Airlines

Deal found 15/9C$ 250

Sun 26/104:00 p.m.YYZ - MCI

2 stops28h 53mMultiple Airlines

Deal found 12/9C$ 253

Thu 2/103:00 p.m.YYZ - MCI

3 stops26h 21mMultiple Airlines

Deal found 15/9C$ 254

Mon 29/99:00 a.m.YYZ - MCI

3 stops31h 10mMultiple Airlines

Deal found 15/9C$ 260

Sat 11/103:50 p.m.YOW - STL

1 stop19h 12mMultiple Airlines

Deal found 14/9C$ 260

Fly from

Fly to

Route

Depart

Return

Price

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Thu 30/10

9:45 a.m.-1:57 p.m.

1 stop29h 12m

Lambert-St Louis

Thu 6/11

6:22 p.m.-2:40 p.m.

2 stops43h 18m

C$ 396

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Fri 17/10

8:05 p.m.-3:56 p.m.

1 stop20h 51m

Lambert-St Louis

Mon 20/10

6:05 p.m.-10:40 p.m.

1 stop27h 35m

C$ 408

TorontoKansas City

YYZ - MCI

YYZMCI

Toronto Pearson Intl

Wed 1/10

12:00 p.m.-3:10 p.m.

2 stops28h 10m

Kansas City

Mon 6/10

5:11 p.m.-2:05 p.m.

1 stop19h 54m

C$ 410

TorontoKansas City

YYZ - MCI

YYZMCI

Toronto Pearson Intl

Fri 3/10

7:45 p.m.-3:10 p.m.

1 stop20h 25m

Kansas City

Tue 7/10

2:55 p.m.-6:52 a.m.

2 stops14h 57m

C$ 421

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Thu 6/11

9:45 a.m.-9:07 a.m.

2 stops24h 22m

Lambert-St Louis

Mon 10/11

2:12 p.m.-12:11 a.m.

1 stop8h 59m

C$ 435

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Mon 6/10

9:50 a.m.-8:37 p.m.

1 stop11h 47m

Lambert-St Louis

Mon 13/10

9:59 p.m.-1:38 p.m.

2 stops38h 39m

C$ 461

TorontoKansas City

YYZ - MCI

YYZMCI

Toronto Pearson Intl

Wed 12/11

9:35 a.m.-12:40 a.m.

1 stop16h 05m

Kansas City

Sun 16/11

11:12 a.m.-9:53 p.m.

2 stops33h 41m

C$ 484

TorontoKansas City

YYZ - MCI

YYZMCI

Toronto Pearson Intl

Thu 13/11

9:45 a.m.-12:40 a.m.

1 stop15h 55m

Kansas City

Sun 16/11

10:09 a.m.-11:46 a.m.

1 stop24h 37m

C$ 489

TorontoKansas City

YYZ - MCI

YYZMCI

Toronto Pearson Intl

Sat 8/11

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

1 stop13h 00m

Kansas City

Tue 11/11

10:09 a.m.-12:11 a.m.

1 stop13h 02m

C$ 496

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Thu 13/11

7:55 p.m.-1:57 p.m.

1 stop19h 02m

Lambert-St Louis

Sun 16/11

7:45 p.m.-11:46 a.m.

2 stops15h 01m

C$ 503

Flights are sorted by cheapest round-trip flights first.

Deals found on 14/9

Showing 1-10 of 60 results

...

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.

Cheapflights Insights

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

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

Currently, January is the cheapest month in which you can book a flight from Region of Ontario to Missouri (average of C$ 365). Flying from Region of Ontario to Missouri in September is currently the most expensive (average of C$ 491). 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?

When flying from Region of Ontario to Missouri, 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 Region of Ontario to Missouri

The most flights from CAON to USMO 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).

Reviews of airlines servicing Missouri

Get a feel of what it's like to fly with Delta,United Airlines, andAmerican Airlines from Ontario to Missouri by reading reviews from past customers. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very good

7,954 reviews

Check prices

Reviews

1 / 20

6.0

Good

Morgan Rae,Aug 2025

BRU - JFK

Typically I choose delta because they do a great job but this time the flight attendant in my zone was very rude and didnt offer the same treatment as she did to others

Delta

8.0

Very good

7,954 reviews

Delta

8.0

Very good

7,954 reviews

Check prices

Reviews

1 / 20

6.0

Good

Morgan Rae,Aug 2025

BRU - JFK

Typically I choose delta because they do a great job but this time the flight attendant in my zone was very rude and didnt offer the same treatment as she did to others

United Airlines

7.4

Good

8,929 reviews

Delta

8.0

Very good

7,954 reviews

Check prices

Reviews

1 / 20

6.0

Good

Morgan Rae,Aug 2025

BRU - JFK

Typically I choose delta because they do a great job but this time the flight attendant in my zone was very rude and didnt offer the same treatment as she did to others

American Airlines

7.2

Good

10,000 reviews

Delta

8.0

Very good

7,954 reviews

Check prices

Reviews

1 / 20

6.0

Good

Morgan Rae,Aug 2025

BRU - JFK

Typically I choose delta because they do a great job but this time the flight attendant in my zone was very rude and didnt offer the same treatment as she did to others

WestJet

7.2

Good

3,091 reviews

Delta

8.0

Very good

7,954 reviews

Check prices

Reviews

1 / 20

6.0

Good

Morgan Rae,Aug 2025

BRU - JFK

Typically I choose delta because they do a great job but this time the flight attendant in my zone was very rude and didnt offer the same treatment as she did to others

Air Canada

7.1

Good

10,000 reviews

Delta

8.0

Very good

7,954 reviews

Check prices

Reviews

1 / 20

6.0

Good

Morgan Rae,Aug 2025

BRU - JFK

Typically I choose delta because they do a great job but this time the flight attendant in my zone was very rude and didnt offer the same treatment as she did to others

Related info for your journey

How long is the flight from Region of Ontario to Missouri?
Airlines like American Airlines, United Airlines, and Delta fly from Region of Ontario to Missouri in about 8h 56m. The time it takes to get you to your destination can typically vary by up to 16h 53m. The distance between Region of Ontario and Missouri is about 1556 km. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.
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, January is the cheapest month in which you can book a flight from Region of Ontario to Missouri (average of C$ 365). Flying from Region of Ontario to Missouri in September is currently the most expensive (average of C$ 491). 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 for Ontario to Missouri

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Complete your trip

Missouri car rentals

Lambert-St Louis Airport car rentals

Kansas City Airport car rentals

Springfield-Branson Airport car rentals

Columbia Regional Airport car rentals

Joplin Airport car rentals

Fort Leonard Wood Waynesville Regional Airport car rentals

Cape Girardeau Airport car rentals

Kirksville Cannon Memorial Airport car rentals

St. Louis car rentals

Kansas City car rentals

Springfield car rentals

Direct flights to United States

Ontario to Missouri flights

Pearson Intl to St. Louis flights

Pearson Intl to Kansas City flights

Pierre Elliott Trudeau Intl to St. Louis flights

Pierre Elliott Trudeau Intl to Kansas City flights

Ottawa to Kansas City flights

Pearson Intl to Springfield flights

Ottawa to St. Louis flights

Pierre Elliott Trudeau Intl to Cape Girardeau flights

Pearson Intl to Columbia flights

Pearson Intl to Quincy flights

Top 5 airlines flying from Ontario to Missouri

Airline	Cheapest	Average	Flexibility	On-time
United Airlines	CheapestC$ 321	AverageC$ 900	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
Air Canada	CheapestC$ 427	AverageC$ 661	FlexibilityNo cancel fee	On-time67%	Search Air Canada flights
American Airlines	CheapestC$ 430	AverageC$ 691	FlexibilityNo cancel fee	On-time71%	Search American Airlines flights
Delta	CheapestC$ 475	AverageC$ 671	FlexibilityNo cancel fee	On-timeN/A	Search Delta flights
WestJet	CheapestC$ 557	AverageC$ 911	FlexibilityNo cancel fee	On-time60%	Search WestJet flights

Fly with Cheapflights

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

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Ontario to Missouri. 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 Ontario to Missouri?

Cheapflights helps you find that perfect flight to Missouri from Ontario by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

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

Cheapflights does show flights with no change fees to all users. To see these options for flights from Ontario to Missouri, users can toggle the no change fees filter when performing a flight search.

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

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

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Cheap flights from Ontario to Missouri from C$ 210

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 29/10. Fares are subject to change and may not be available on all flights or dates of travel.

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 15 September 2025.

Round-trip from

One-way from

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Average price

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Good one-way deal

Find flight deals from Ontario to Missouri

Cheapest flights from Ontario to MissouriExplore 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 15 September 2025.

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 15 September 2025.

Cheapflights Fare Finder

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

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.

Cheapflights Insights

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

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

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 15 September 2025.

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 15 September 2025.

Reviews of airlines servicing Missouri

Get a feel of what it's like to fly with Delta,United Airlines, andAmerican Airlines from Ontario to Missouri by reading reviews from past customers. You can also see how each airline stacks up 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 Ontario to Missouri. 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 Region of Ontario to Missouri?

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

How can I find direct flights from Ontario to Missouri?

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

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

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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.

Top 5 airlines flying from Ontario to Missouri

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

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

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

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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 15 September 2025.