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$60+ Cheap flights from Missouri to Ontario (ONT)

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 12/16. Fares are subject to change and may not be available on all flights or dates of travel.
STL — ONT
nov. 26 — dic. 31
mar. 11/26
mar. 12/3
1 adult, Economy
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Cheap flight deals from Missouri to Ontario

Discover tips and strategies to find the most affordable flight options for your journey from Missouri (USMO) to Ontario (ONT). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated noviembre 21, 2024.

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 noviembre 21, 2024.

This CheapOair deal was found by Cheapflights users on 11/20. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 12/76:46 pmSTL - ONT
1 stop6h 58mFrontier
jue. 12/126:45 amONT - STL
1 stop23h 28mFrontier
Deal found 11/20$118
This Frontier deal was found by Cheapflights users on 11/20. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 12/166:25 pmMCI - ONT
1 stop19h 07mFrontier
mar. 12/2412:59 amONT - MCI
1 stop10h 39mFrontier
Deal found 11/20$145
This Expedia deal was found by Cheapflights users on 11/20. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 12/76:46 pmSTL - ONT
1 stop6h 58mMultiple Airlines
jue. 12/127:00 amONT - STL
2 stops14h 59mMultiple Airlines
Deal found 11/20$282
This Delta deal was found by Cheapflights users on 11/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 12/123:29 pmMCI - ONT
1 stop9h 33mDelta
mar. 12/175:50 amONT - MCI
2 stops9h 40mDelta
Deal found 11/20$290
This Delta deal was found by Cheapflights users on 11/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/176:30 pmSTL - ONT
1 stop7h 44mDelta
mar. 1/71:21 pmONT - STL
1 stop6h 12mDelta
Deal found 11/20$306
This American Airlines deal was found by Cheapflights users on 11/19. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/172:29 pmSTL - ONT
1 stop5h 58mAmerican Airlines
mar. 12/2410:02 amONT - STL
2 stops7h 28mAmerican Airlines
Deal found 11/19$311
This Delta deal was found by Cheapflights users on 11/19. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 12/74:30 pmSGF - ONT
1 stop9h 11mDelta
sáb. 12/147:10 amONT - SGF
1 stop6h 40mDelta
Deal found 11/19$318
This Alaska Airlines deal was found by Cheapflights users on 11/20. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 12/132:27 pmMCI - ONT
1 stop11h 32mAlaska Airlines
dom. 12/158:55 pmONT - MCI
1 stop25h 04mAlaska Airlines
Deal found 11/20$322
This American Airlines deal was found by Cheapflights users on 11/20. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/177:02 amMCI - ONT
1 stop6h 59mAmerican Airlines
mié. 1/14:25 pmONT - MCI
1 stop5h 34mAmerican Airlines
Deal found 11/20$326
This Expedia deal was found by Cheapflights users on 11/20. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/177:00 amMCI - ONT
1 stop7h 58mMultiple Airlines
mar. 12/3112:59 amONT - MCI
1 stop10h 39mMultiple Airlines
Deal found 11/20$328
This American Airlines deal was found by Cheapflights users on 11/20. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 12/712:08 pmSGF - ONT
2 stops8h 19mAmerican Airlines
sáb. 12/146:10 amONT - SGF
2 stops9h 34mAmerican Airlines
Deal found 11/20$358
This Alaska Airlines deal was found by Cheapflights users on 11/20. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/117:00 amSTL - ONT
1 stop7h 58mAlaska Airlines
dom. 12/157:00 amONT - STL
2 stops14h 59mAlaska Airlines
Deal found 11/20$370

Find flights from Missouri to Ontario within your budget

Customize your flight search to find flights from Missouri 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 2,629,791 searches. Data last updated noviembre 21, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

St. LouisOntario

STL - ONT

STLONT

Lambert-St Louis

sáb. 12/7

6:46 pm-11:44 pm

1 stop6h 58m

Ontario

jue. 12/12

6:45 am-8:13 am

1 stop23h 28m

$118

Kansas CityOntario

MCI - ONT

MCIONT

Kansas City

lun. 12/16

6:25 pm-11:32 am

1 stop19h 07m

Ontario

mar. 12/24

12:59 am-1:38 pm

1 stop10h 39m

$145

Kansas CityOntario

MCI - ONT

MCIONT

Kansas City

jue. 1/23

2:59 pm-10:39 pm

1 stop9h 40m

Ontario

lun. 1/27

10:40 am-5:49 pm

1 stop5h 09m

$210

Kansas CityOntario

MCI - ONT

MCIONT

Kansas City

mar. 1/14

2:59 pm-10:38 am

1 stop21h 39m

Ontario

vie. 1/17

4:06 pm-2:04 pm

1 stop19h 58m

$282

St. LouisOntario

STL - ONT

STLONT

Lambert-St Louis

sáb. 12/7

6:46 pm-11:44 pm

1 stop6h 58m

Ontario

jue. 12/12

7:00 am-11:59 pm

2 stops14h 59m

$282

Kansas CityOntario

MCI - ONT

MCIONT

Kansas City

mar. 2/11

6:45 am-3:25 pm

1 stop10h 40m

Ontario

mar. 2/25

7:05 am-5:39 pm

1 stop8h 34m

$285

St. LouisOntario

STL - ONT

STLONT

Lambert-St Louis

mar. 12/17

6:30 pm-12:14 am

1 stop7h 44m

Ontario

mar. 1/7

1:21 pm-9:33 pm

1 stop6h 12m

$306

St. LouisOntario

STL - ONT

STLONT

Lambert-St Louis

mar. 12/17

2:29 pm-6:27 pm

1 stop5h 58m

Ontario

mar. 12/24

10:02 am-7:30 pm

2 stops7h 28m

$311

Kansas CityOntario

MCI - ONT

MCIONT

Kansas City

mar. 1/7

10:29 am-6:24 pm

2 stops9h 55m

Ontario

vie. 1/10

2:44 pm-10:52 pm

1 stop6h 08m

$311

SpringfieldOntario

SGF - ONT

SGFONT

Springfield-Branson

sáb. 12/7

4:30 pm-11:41 pm

1 stop9h 11m

Ontario

sáb. 12/14

7:10 am-3:50 pm

1 stop6h 40m

$318

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/20

Showing 1-10 of 40 results
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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.

Travel insights for flights from Missouri to Ontario

Get recent, data-driven insights about flights from Missouri to Ontario including ideal travel times, pricing trends, and more.

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

Currently, September is the cheapest month in which you can book a flight from Missouri to Ontario (average of $236). Flying from Missouri to Ontario in December is currently the most expensive (average of $298). 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 ONT?

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 noviembre 21, 2024.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Missouri to Ontario as you normally would.

Rainfall in Ontario by month

Plan your trip to Ontario by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Ontario ranges from 0.1 - 3.4 inches per month. February is typically the wettest month, when rainfall can reach 3.4 in. June is typically the driest time to visit Ontario when rainfall is around 0.1 in.

Temperature in Ontario by month

Plan your trip to Ontario by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Ontario, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 78.8 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 53.6 F).

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 noviembre 21, 2024.
Read reviews from past customers who have flown Frontier, Alaska Airlines and Delta from Missouri to Ontario. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
5,015 reviews

Boarding

8.2

Overall

8.1

Comfort

8.1

Food

7.2

Entertainment

7.7

Crew

8.7

Reviews

1 / 10

No issues. I needed pre boarding and I was able to get it without issue

Southwest
8.1
Very good
5,015 reviews
Southwest
8.1
Very good
5,015 reviews

Boarding

8.2

Overall

8.1

Comfort

8.1

Food

7.2

Entertainment

7.7

Crew

8.7

Reviews

1 / 10

No issues. I needed pre boarding and I was able to get it without issue

Alaska Airlines
8.0
Very good
9,458 reviews
Southwest
8.1
Very good
5,015 reviews

Boarding

8.2

Overall

8.1

Comfort

8.1

Food

7.2

Entertainment

7.7

Crew

8.7

Reviews

1 / 10

No issues. I needed pre boarding and I was able to get it without issue

Delta
8.0
Very good
8,758 reviews
Southwest
8.1
Very good
5,015 reviews

Boarding

8.2

Overall

8.1

Comfort

8.1

Food

7.2

Entertainment

7.7

Crew

8.7

Reviews

1 / 10

No issues. I needed pre boarding and I was able to get it without issue

United Airlines
7.4
Good
9,172 reviews
Southwest
8.1
Very good
5,015 reviews

Boarding

8.2

Overall

8.1

Comfort

8.1

Food

7.2

Entertainment

7.7

Crew

8.7

Reviews

1 / 10

No issues. I needed pre boarding and I was able to get it without issue

American Airlines
7.2
Good
10,000 reviews
Southwest
8.1
Very good
5,015 reviews

Boarding

8.2

Overall

8.1

Comfort

8.1

Food

7.2

Entertainment

7.7

Crew

8.7

Reviews

1 / 10

No issues. I needed pre boarding and I was able to get it without issue

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.

  • What airport do you fly into for flights to Ontario from Missouri?

    For a flight from Missouri to Ontario, you will be flying into Ontario. Ontario (ONT) is just 3.1 mi from the center of the city.

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

    For one-way options, check prices for Frontier. According to our data, you can fly for as low as $60. Users have also found prices from $137 and $157 on Delta and Alaska Airlines, respectively.

  • What are the most popular routes from Missouri to Ontario?

    When deciding which route to take from Missouri to Ontario consider Lambert-St Louis - Ontario, Kansas City - Ontario or Springfield-Branson - Ontario as they are the most popular.

  • 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 Ontario?

    Currently, September is the cheapest month in which you can book a flight from Missouri to Ontario (average of $236). Flying from Missouri to Ontario in December is currently the most expensive (average of $298). 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 Missouri to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
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Top 6 airlines flying from Missouri to Ontario

Discover the top 6 airlines that operate flights from Missouri 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 2,629,791 searches. Data last updated noviembre 21, 2024.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$98Average$180FlexibilityNo cancel feeOn-time65%
FrontierCheapest$114Average$191FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$118Average$441FlexibilityNo cancel feeOn-time69%
DeltaCheapest$204Average$349FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$258Average$414FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$316Average$421FlexibilityNo cancel feeOn-time63%
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