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Ontario

$105+ Cheap flights from Kansas City (MCI) 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 9/26. Fares are subject to change and may not be available on all flights or dates of travel.
MCI — YYZ
ago. 25 — sep. 11
lun. 8/25
lun. 9/1
1 adult, Economy
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Cheap flight deals from Kansas City to Ontario

Keep the following information in mind while searching for Kansas City to Ontario flight deals. Data was last updated agosto 20, 2025.

Round-trip from

$322
(Kiwi.com)

One-way from

$105
(Kiwi.com)

Popular in

January

Cheapest in

February

Average price

$721
From Kansas City to Ontario
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One-way flight from Kansas City to Ontario
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High demand for flights, 1% potential price rise
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Cheapest flight prices on average. 1% potential price decrease ($8 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Find flight deals from Kansas City to Ontario

Cheapest flights from Kansas City to Ontario
Explore the most affordable flight options available from Kansas City to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on agosto 20, 2025.

This Kiwi.com deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 9/255:15 amMCI - YYZ
1 stop10h 21mMultiple Airlines
dom. 9/286:30 amYYZ - MCI
1 stop28h 48mMultiple Airlines
Deal found 8/18$322
This Kiwi.com deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 9/95:15 amMCI - YYZ
1 stop7h 37mMultiple Airlines
mar. 9/167:45 pmYYZ - MCI
1 stop20h 25mMultiple Airlines
Deal found 8/17$324
This Kiwi.com deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 10/152:55 pmMCI - YYZ
2 stops22h 10mMultiple Airlines
lun. 10/206:30 amYYZ - MCI
1 stop10h 46mMultiple Airlines
Deal found 8/18$333
This Kiwi.com deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 10/165:15 amMCI - YYZ
1 stop17h 26mMultiple Airlines
lun. 10/206:30 amYYZ - MCI
1 stop10h 46mMultiple Airlines
Deal found 8/18$337
This Kiwi.com deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 10/135:14 pmMCI - YYZ
1 stop29h 38mMultiple Airlines
lun. 10/206:30 amYYZ - MCI
1 stop10h 46mMultiple Airlines
Deal found 8/18$341
This Kiwi.com deal was found by Cheapflights users on 8/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 9/164:05 pmMCI - YYZ
2 stops26h 53mMultiple Airlines
mar. 9/3010:40 amYYZ - MCI
1 stop29h 30mMultiple Airlines
Deal found 8/20$342
This Kiwi.com deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 10/142:55 pmMCI - YYZ
2 stops22h 10mMultiple Airlines
lun. 10/206:30 amYYZ - MCI
1 stop10h 46mMultiple Airlines
Deal found 8/18$345
This Kiwi.com deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 10/25:15 amMCI - YYZ
1 stop16h 25mMultiple Airlines
jue. 10/92:00 pmYYZ - MCI
2 stops20h 58mMultiple Airlines
Deal found 8/17$350
This Kiwi.com deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 10/165:15 amMCI - YUL
1 stop8h 05mMultiple Airlines
lun. 11/174:35 pmYUL - MCI
1 stop17h 29mMultiple Airlines
Deal found 8/18$362
This Kiwi.com deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 10/45:15 amMCI - YUL
1 stop8h 05mMultiple Airlines
jue. 10/96:45 amYUL - MCI
1 stop18h 01mMultiple Airlines
Deal found 8/19$370
This Kiwi.com deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 9/255:15 amMCI - YUL
1 stop8h 05mMultiple Airlines
dom. 9/286:45 amYUL - MCI
2 stops28h 33mMultiple Airlines
Deal found 8/17$375
This Mytrip deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 10/25:15 amMCI - YUL
1 stop8h 05mMultiple Airlines
jue. 10/96:45 amYUL - MCI
1 stop18h 01mMultiple Airlines
Deal found 8/17$377

Cheapflights Fare Finder

 
Customize your flight search to find flights from Kansas City to Ontario that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated agosto 20, 2025.
Use the filters below to find and compare flights from Kansas City to Ontario that are best for you.

Fly from

Kansas City

Fly to

Ontario

Route

Depart

Return

Price

Kansas CityToronto

MCI - YYZ

MCIYYZ

Kansas City

jue. 9/25

5:15 am-4:36 pm

1 stop10h 21m

Toronto Pearson Intl

dom. 9/28

6:30 am-10:18 am

1 stop28h 48m

$322

Kansas CityToronto

MCI - YYZ

MCIYYZ

Kansas City

mar. 9/9

5:15 am-1:52 pm

1 stop7h 37m

Toronto Pearson Intl

mar. 9/16

7:45 pm-3:10 pm

1 stop20h 25m

$324

Kansas CityToronto

MCI - YYZ

MCIYYZ

Kansas City

mié. 10/15

2:55 pm-2:05 pm

2 stops22h 10m

Toronto Pearson Intl

lun. 10/20

6:30 am-4:16 pm

1 stop10h 46m

$333

Kansas CityToronto

MCI - YYZ

MCIYYZ

Kansas City

vie. 10/17

10:53 am-7:45 pm

1 stop31h 52m

Toronto Pearson Intl

lun. 10/20

6:30 am-4:16 pm

1 stop10h 46m

$336

Kansas CityToronto

MCI - YYZ

MCIYYZ

Kansas City

jue. 10/16

5:15 am-11:41 pm

1 stop17h 26m

Toronto Pearson Intl

lun. 10/20

6:30 am-4:16 pm

1 stop10h 46m

$337

Kansas CityToronto

MCI - YYZ

MCIYYZ

Kansas City

lun. 10/13

5:14 pm-11:52 pm

1 stop29h 38m

Toronto Pearson Intl

lun. 10/20

6:30 am-4:16 pm

1 stop10h 46m

$341

Kansas CityToronto

MCI - YYZ

MCIYYZ

Kansas City

mar. 9/16

4:05 pm-7:58 pm

2 stops26h 53m

Toronto Pearson Intl

mar. 9/30

10:40 am-3:10 pm

1 stop29h 30m

$342

Kansas CityToronto

MCI - YYZ

MCIYYZ

Kansas City

mar. 10/14

2:55 pm-2:05 pm

2 stops22h 10m

Toronto Pearson Intl

lun. 10/20

6:30 am-4:16 pm

1 stop10h 46m

$345

Kansas CityMontreal

MCI - YUL

MCIYUL

Kansas City

jue. 10/16

5:15 am-2:20 pm

1 stop8h 05m

Montreal Pierre Elliott Trudeau Intl

lun. 11/17

4:35 pm-9:04 am

1 stop17h 29m

$362

Kansas CityMontreal

MCI - YUL

MCIYUL

Kansas City

sáb. 10/4

5:15 am-2:20 pm

1 stop8h 05m

Montreal Pierre Elliott Trudeau Intl

jue. 10/9

6:45 am-11:46 pm

1 stop18h 01m

$370

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/18

Showing 1-10 of 47 results
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Best time to book a flight from Kansas City to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Kansas City 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 Kansas City to Ontario

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

Currently, January is the cheapest month in which you can book a flight from Kansas City to Region of Ontario (average of $243). Flying from Kansas City to Region of Ontario in August is currently the most expensive (average of $348). 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.

Reviews of airlines servicing Ontario

Get insights into the airlines that provide service to Ontario. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Ontario. Reviews last updated agosto 20, 2025.
Read reviews from past customers who have flown Delta, United Airlines, and American Airlines from Kansas City to Ontario. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,982 reviews

Overall

8.0

Crew

8.5

Food

7.3

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,982 reviews
Delta
8.0
Very good
7,982 reviews

Overall

8.0

Crew

8.5

Food

7.3

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,928 reviews
Delta
8.0
Very good
7,982 reviews

Overall

8.0

Crew

8.5

Food

7.3

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,982 reviews

Overall

8.0

Crew

8.5

Food

7.3

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
WestJet
7.2
Good
3,032 reviews
Delta
8.0
Very good
7,982 reviews

Overall

8.0

Crew

8.5

Food

7.3

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Air Canada
7.1
Good
10,000 reviews
Delta
8.0
Very good
7,982 reviews

Overall

8.0

Crew

8.5

Food

7.3

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

Find useful and relevant information for your journey from Kansas City to Ontario. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Kansas City to Ontario?

    Kansas City (MCI), located 17.4 mi from the city center, is the airport you fly out of when you book flights from Kansas City to Ontario.

  • What are the most popular routes from Kansas City to Region of Ontario?

    Most travelers choose Kansas City - Montreal Pierre Elliott Trudeau Intl, Kansas City - Toronto Pearson Intl or Kansas City - Toronto Island when deciding on the best route from Kansas City to Region of Ontario.

  • What are the cheapest flights from Kansas City to Region of Ontario?

    On average you can expect to pay $984 for a flight from Kansas City to Region of Ontario. The cheapest flight overall is $556 while the most popular route, (Kansas City - Montreal Pierre Elliott Trudeau Intl) is currently priced at $319.

  • Can I find deals for flights from Kansas City to Ontario that include hotel bookings?

    Yes. In addition to deals on Kansas City to Ontario flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Kansas City to Ontario?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Kansas City to Ontario.

  • Can I find deals for business class flights from Kansas City to Ontario?

    Yes. Cheapflights offers flight deals from Kansas City 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 Kansas City to Region of Ontario?

    Currently, January is the cheapest month in which you can book a flight from Kansas City to Region of Ontario (average of $243). Flying from Kansas City to Region of Ontario in August is currently the most expensive (average of $348). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for Kansas City to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
St. Louis to Pearson Intl flights
St. Louis to Pierre Elliott Trudeau Intl flights
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Springfield to Toronto Island flights
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Joplin to Pierre Elliott Trudeau Intl flights
St. Louis to Kelowna flights
Kansas City to Moncton flights
St. Louis to Sydney flights
St. Louis to Saskatoon flights
St. Louis to Grande Prairie flights
Kansas City to St. John's flights

Top 5 airlines flying from Kansas City to Ontario

Discover the top 5 airlines that operate flights from Kansas City to Ontario. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated agosto 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$254Average$585FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$447Average$648FlexibilityNo cancel feeOn-time69%
DeltaCheapest$495Average$722FlexibilityNo cancel feeOn-timeN/A
WestJetCheapest$497Average$729FlexibilityNo cancel feeOn-time60%
American AirlinesCheapest$519Average$663FlexibilityNo cancel feeOn-time71%

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