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Cheap flights from Missouri to Ontario (ONT) from $57

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 6/3. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
STL — ONT
May 21 — May 281
From?
To?
Tue 5/21
Tue 5/28
1 adult, Economy
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What is the cheapest month to fly from Missouri to Ontario?

The best pricing can be found in the month of February. Prices to Ontario from Missouri average $228. You can even find prices in February for less than $228, as users have found deals to Ontario from as low as $126. The month of March appears to be one of the more expensive times to travel to Ontario from Missouri. Flying in the targeted month can save you up to 88%.

When is the cheapest time to fly from Missouri to Ontario (MO - ONT)?

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.

Cheap Frontier flights from Missouri to Ontario

Explore cheap flight options specifically provided by Frontier for the route between Missouri and Ontario. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,637,452 searches. Data last updated May 16, 2024.
Check out some of the cheapest Frontier flights we've come across from Missouri to Ontario. Make sure to double check the flight details before booking.
Fri 6/75:36 pmSTL - ONT
1 stop5h 47mFrontier
Sun 6/99:40 pmONT - STL
1 stop11h 02mFrontier
Deal found 5/15$131
Fri 6/75:36 pmSTL - ONT
1 stop5h 47mFrontier
Sun 6/99:40 pmONT - STL
2 stops22h 19mFrontier
Deal found 5/15$139
Tue 5/282:12 pmSTL - ONT
1 stop27h 53mFrontier
Sun 6/26:06 pmONT - STL
1 stop14h 07mFrontier
Deal found 5/15$140
Thu 5/307:23 pmSTL - ONT
1 stop16h 01mFrontier
Mon 6/312:55 pmONT - STL
1 stop19h 18mFrontier
Deal found 5/15$141
Tue 5/287:23 pmSTL - ONT
1 stop22h 42mFrontier
Wed 5/2912:59 amONT - STL
1 stop19h 07mFrontier
Deal found 5/15$142
Thu 5/305:01 pmSTL - ONT
1 stop24h 38mFrontier
Mon 6/312:59 amONT - STL
1 stop10h 10mFrontier
Deal found 5/16$143
Wed 8/147:45 pmMCI - ONT
1 stop5h 54mFrontier
Sat 8/1712:49 amONT - MCI
1 stop5h 51mFrontier
Deal found 5/14$146
Tue 5/287:23 pmSTL - ONT
1 stop15h 41mFrontier
Wed 5/297:45 pmONT - STL
1 stop12h 28mFrontier
Deal found 5/15$147
Sat 5/2511:41 pmSTL - ONT
1 stop8h 36mFrontier
Sun 5/2611:30 pmONT - STL
1 stop8h 43mFrontier
Deal found 5/15$149

Cheap American Airlines flights from Missouri to Ontario

Explore cheap flight options specifically provided by American Airlines for the route between Missouri and Ontario. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,637,452 searches. Data last updated May 16, 2024.
Browse through some of the cheapest American Airlines flights traveling from Missouri to Ontario. Check back soon if you're not seeing flights that suit your needs.
Tue 9/106:23 pmSGF - ONT
1 stop5h 19mAmerican Airlines
Mon 9/1611:00 pmONT - SGF
1 stop9h 39mAmerican Airlines
Deal found 5/15$221
Sat 6/15:30 amSGF - ONT
1 stop6h 10mAmerican Airlines
Sat 6/152:44 pmONT - SGF
1 stop5h 31mAmerican Airlines
Deal found 5/15$269
Thu 8/2212:09 pmMCI - ONT
1 stop10h 12mAmerican Airlines
Wed 8/286:40 amONT - MCI
2 stops7h 30mAmerican Airlines
Deal found 5/15$292
Thu 5/302:28 pmSTL - ONT
1 stop10h 01mAmerican Airlines
Sat 6/112:53 pmONT - STL
2 stops8h 06mAmerican Airlines
Deal found 5/14$338
Tue 8/2010:56 amMCI - ONT
2 stops9h 28mAmerican Airlines
Mon 8/262:39 pmONT - MCI
1 stop6h 18mAmerican Airlines
Deal found 5/15$357
Thu 5/3011:09 amSTL - ONT
2 stops9h 39mAmerican Airlines
Wed 6/1910:45 pmONT - STL
1 stop7h 48mAmerican Airlines
Deal found 5/14$358
Sat 5/2512:56 pmSGF - ONT
1 stop8h 06mAmerican Airlines
Sat 6/1510:45 pmONT - SGF
1 stop9h 34mAmerican Airlines
Deal found 5/14$384
Sat 5/2510:47 amSGF - ONT
2 stops10h 04mAmerican Airlines
Sat 6/1510:45 pmONT - SGF
1 stop9h 34mAmerican Airlines
Deal found 5/14$391
Tue 10/1510:01 amMCI - ONT
1 stop5h 24mAmerican Airlines
Fri 10/184:45 pmONT - MCI
1 stop5h 04mAmerican Airlines
Deal found 5/15$399

Cheap Missouri to Ontario flights in May & June 2024

Find cheap flight options from Missouri to Ontario specifically for the months of May and June 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 2,637,452 searches. Prices were last updated on May 16, 2024.
These are some of the best deals we've found on flights to Ontario in 2024 at this time. More deals are always being added, so be sure to check back regularly.
Fri 6/75:36 pmSTL - ONT
1 stop5h 47mFrontier
Sun 6/99:40 pmONT - STL
1 stop11h 02mFrontier
Deal found 5/15$131
Wed 5/2210:21 pmSTL - ONT
1 stop12h 19mFrontier
Wed 5/2911:30 pmONT - STL
1 stop8h 43mFrontier
Deal found 5/15$139
Sat 5/2511:41 pmSTL - ONT
1 stop8h 36mFrontier
Wed 5/2911:30 pmONT - STL
1 stop8h 43mFrontier
Deal found 5/15$140
Thu 5/307:23 pmSTL - ONT
1 stop16h 01mFrontier
Mon 6/312:55 pmONT - STL
1 stop19h 18mFrontier
Deal found 5/15$141
Tue 5/287:23 pmSTL - ONT
1 stop22h 42mFrontier
Wed 5/2912:59 amONT - STL
1 stop19h 07mFrontier
Deal found 5/15$142
Tue 5/287:23 pmSTL - ONT
1 stop15h 41mFrontier
Wed 5/297:45 pmONT - STL
1 stop12h 28mFrontier
Deal found 5/15$147
Sat 5/2511:41 pmSTL - ONT
1 stop8h 36mFrontier
Sun 5/2611:30 pmONT - STL
1 stop8h 43mFrontier
Deal found 5/15$149
Thu 5/167:23 pmSTL - ONT
1 stop22h 16mFrontier
Fri 5/1711:04 pmONT - STL
1 stop9h 09mFrontier
Deal found 5/15$150
Thu 5/237:23 pmSTL - ONT
1 stop16h 01mFrontier
Sun 5/261:31 pmONT - STL
1 stop18h 42mFrontier
Deal found 5/15$151

Missouri to Ontario 2024 flight deals

Discover exclusive flight deals for travel between Missouri and Ontario in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 2,637,452 searches. Data last updated May 16, 2024.
These are some of the best deals we've found on flights to Ontario in 2024 at this time. More deals are always being added, so be sure to check back regularly.
Fri 6/75:36 pmSTL - ONT
1 stop5h 47mFrontier
Sun 6/99:40 pmONT - STL
1 stop11h 02mFrontier
Deal found 5/15$131
Wed 5/2210:21 pmSTL - ONT
1 stop12h 19mFrontier
Wed 5/2911:30 pmONT - STL
1 stop8h 43mFrontier
Deal found 5/15$139
Sat 5/2511:41 pmSTL - ONT
1 stop8h 36mFrontier
Wed 5/2911:30 pmONT - STL
1 stop8h 43mFrontier
Deal found 5/15$140
Wed 8/217:45 pmMCI - ONT
1 stop5h 54mFrontier
Tue 8/2712:49 amONT - MCI
1 stop5h 51mFrontier
Deal found 5/15$140
Thu 5/307:23 pmSTL - ONT
1 stop16h 01mFrontier
Mon 6/312:55 pmONT - STL
1 stop19h 18mFrontier
Deal found 5/15$141
Tue 5/287:23 pmSTL - ONT
1 stop22h 42mFrontier
Wed 5/2912:59 amONT - STL
1 stop19h 07mFrontier
Deal found 5/15$142
Tue 8/207:45 pmMCI - ONT
1 stop5h 54mFrontier
Tue 8/271:32 pmONT - MCI
1 stop17h 08mFrontier
Deal found 5/15$143
Wed 8/147:45 pmMCI - ONT
1 stop5h 54mFrontier
Sat 8/1712:49 amONT - MCI
1 stop5h 51mFrontier
Deal found 5/14$146
Tue 5/287:23 pmSTL - ONT
1 stop15h 41mFrontier
Wed 5/297:45 pmONT - STL
1 stop12h 28mFrontier
Deal found 5/15$147

Missouri to Ontario flights leaving soon

Find last-minute flight options from Missouri to Ontario for spontaneous travel. Discover available flights and compare prices based on user searches. Secure great deals and offers for spontaneous trips with quick booking options. Over the last 7 days, Cheapflights users made 2,637,452 searches. Data last updated May 16, 2024.
Book one of these great deals on flights from Missouri to Ontario. To prevent any unwanted surprises, users should verify their flight info before booking.
Wed 5/2210:21 pmSTL - ONT
1 stop12h 19mFrontier
Wed 5/2911:30 pmONT - STL
1 stop8h 43mFrontier
Deal found 5/15$139
Sat 5/2511:41 pmSTL - ONT
1 stop8h 36mFrontier
Wed 5/2911:30 pmONT - STL
1 stop8h 43mFrontier
Deal found 5/15$140
Thu 5/237:23 pmSTL - ONT
1 stop16h 01mFrontier
Tue 5/2810:42 pmONT - STL
1 stop9h 31mFrontier
Deal found 5/15$141
Sat 5/2511:41 pmSTL - ONT
1 stop8h 36mFrontier
Sun 5/2611:30 pmONT - STL
1 stop8h 43mFrontier
Deal found 5/15$149
Thu 5/237:23 pmSTL - ONT
1 stop16h 01mFrontier
Sun 5/261:31 pmONT - STL
1 stop18h 42mFrontier
Deal found 5/15$151
Wed 5/2210:21 pmSTL - ONT
1 stop12h 19mFrontier
Thu 5/236:11 pmONT - STL
1 stop14h 02mFrontier
Deal found 5/15$152
Sat 5/2511:41 pmSTL - ONT
1 stop8h 36mFrontier
Mon 5/2712:59 amONT - STL
1 stop10h 10mFrontier
Deal found 5/15$155
Wed 5/2210:21 pmSTL - ONT
1 stop12h 19mFrontier
Mon 5/2712:59 amONT - STL
1 stop10h 10mFrontier
Deal found 5/15$156
Thu 5/237:23 pmSTL - ONT
1 stop16h 01mFrontier
Mon 5/2712:59 amONT - STL
1 stop10h 10mFrontier
Deal found 5/15$157

One-way flights to Ontario from Missouri

Search for one-way flight options from Missouri to Ontario. Find affordable one-way fares based on user searches. Compare prices and availability to plan your one-way journey according to your preferred dates and budget. Over the last 7 days, Cheapflights users made 2,637,452 searches. Data last updated May 16, 2024.
Users traveling one-way from Missouri to Ontario can select one of these great deals. Users can also find round-trip Missouri to Ontario flights by using the search form above.
Mon 6/38:04 pmSTL - ONT
1 stop5h 55mFrontier
Deal found 5/15$57
Fri 6/145:36 pmSTL - ONT
1 stop5h 47mFrontier
Deal found 5/15$62
Wed 6/128:02 pmSTL - ONT
1 stop5h 47mFrontier
Deal found 5/15$70
Tue 6/47:44 pmMCI - ONT
1 stop6h 15mFrontier
Deal found 5/15$70
Tue 5/287:23 pmSTL - ONT
1 stop15h 41mFrontier
Deal found 5/14$76
Sun 8/187:45 pmMCI - ONT
1 stop5h 54mFrontier
Deal found 5/15$77
Tue 6/117:29 pmSTL - ONT
1 stop15h 35mFrontier
Deal found 5/14$80
Sat 6/88:41 amMCI - ONT
1 stop17h 16mFrontier
Deal found 5/15$81
Thu 5/237:23 pmSTL - ONT
1 stop16h 01mFrontier
Deal found 5/15$82

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 2,637,452 searches. Data last updated May 16, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$131 - $332

Route

Depart

Return

Price

Lambert-St LouisOntario

STL - ONT

STLONT

Lambert-St Louis

Fri 6/7

1 stop5h 47m

Ontario

Sun 6/9

1 stop11h 02m

$131

Lambert-St LouisOntario

STL - ONT

STLONT

Lambert-St Louis

Fri 6/7

1 stop5h 47m

Ontario

Sun 6/9

2 stops22h 19m

$139

Lambert-St LouisOntario

STL - ONT

STLONT

Lambert-St Louis

Tue 5/28

1 stop27h 53m

Ontario

Sun 6/2

1 stop14h 07m

$140

Kansas CityOntario

MCI - ONT

MCIONT

Kansas City

Wed 8/21

1 stop5h 54m

Ontario

Tue 8/27

1 stop5h 51m

$140

Lambert-St LouisOntario

STL - ONT

STLONT

Lambert-St Louis

Thu 5/30

1 stop16h 01m

Ontario

Mon 6/3

1 stop19h 18m

$141

Springfield-BransonOntario

SGF - ONT

SGFONT

Springfield-Branson

Tue 9/10

1 stop5h 19m

Ontario

Mon 9/16

1 stop9h 39m

$221

Kansas CityOntario

MCI - ONT

MCIONT

Kansas City

Sat 6/22

1 stop8h 27m

Ontario

Tue 6/25

1 stop9h 14m

$287

Kansas CityOntario

MCI - ONT

MCIONT

Kansas City

Wed 5/29

1 stop7h 48m

Ontario

Wed 6/5

1 stop8h 40m

$293

Lambert-St LouisOntario

STL - ONT

STLONT

Lambert-St Louis

Tue 7/23

2 stops15h 40m

Ontario

Sun 7/28

1 stop6h 48m

$332

Flights are sorted by cheapest first

Deals found on 5/15

No data available for this route at this time. Please check back soon.

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 May 16, 2024.
Read reviews from past customers who have flown Frontier, American 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.
Alaska Airlines
8.1
Very good
9,157 reviews
Check prices

Crew

8.6

Boarding

8.2

Comfort

7.9

Overall

8.1

Food

7.3

Entertainment

7.3

Reviews

1 / 10

We paid $161 for two exit row seats thinking there’d be extra leg room and not be cramped! The price we paid was a rip-off for these seats and the plane was extremely narrow and cramped. The male crew were okay but not super-friendly. When we picked up our luggage at baggage claim, someone ripped my luggage with a knife or blunt object and destroyed it!! I will be filling a claim for this and took pictures. I heard great reviews about this airline but am disappointed.

Alaska Airlines
8.1
Very good
9,157 reviews
Alaska Airlines
8.1
Very good
9,157 reviews
Check prices

Crew

8.6

Boarding

8.2

Comfort

7.9

Overall

8.1

Food

7.3

Entertainment

7.3

Reviews

1 / 10

We paid $161 for two exit row seats thinking there’d be extra leg room and not be cramped! The price we paid was a rip-off for these seats and the plane was extremely narrow and cramped. The male crew were okay but not super-friendly. When we picked up our luggage at baggage claim, someone ripped my luggage with a knife or blunt object and destroyed it!! I will be filling a claim for this and took pictures. I heard great reviews about this airline but am disappointed.

Delta
8.0
Very good
10,673 reviews
Alaska Airlines
8.1
Very good
9,157 reviews
Check prices

Crew

8.6

Boarding

8.2

Comfort

7.9

Overall

8.1

Food

7.3

Entertainment

7.3

Reviews

1 / 10

We paid $161 for two exit row seats thinking there’d be extra leg room and not be cramped! The price we paid was a rip-off for these seats and the plane was extremely narrow and cramped. The male crew were okay but not super-friendly. When we picked up our luggage at baggage claim, someone ripped my luggage with a knife or blunt object and destroyed it!! I will be filling a claim for this and took pictures. I heard great reviews about this airline but am disappointed.

United Airlines
7.4
Good
10,924 reviews
Alaska Airlines
8.1
Very good
9,157 reviews
Check prices

Crew

8.6

Boarding

8.2

Comfort

7.9

Overall

8.1

Food

7.3

Entertainment

7.3

Reviews

1 / 10

We paid $161 for two exit row seats thinking there’d be extra leg room and not be cramped! The price we paid was a rip-off for these seats and the plane was extremely narrow and cramped. The male crew were okay but not super-friendly. When we picked up our luggage at baggage claim, someone ripped my luggage with a knife or blunt object and destroyed it!! I will be filling a claim for this and took pictures. I heard great reviews about this airline but am disappointed.

American Airlines
7.3
Good
14,514 reviews
Alaska Airlines
8.1
Very good
9,157 reviews
Check prices

Crew

8.6

Boarding

8.2

Comfort

7.9

Overall

8.1

Food

7.3

Entertainment

7.3

Reviews

1 / 10

We paid $161 for two exit row seats thinking there’d be extra leg room and not be cramped! The price we paid was a rip-off for these seats and the plane was extremely narrow and cramped. The male crew were okay but not super-friendly. When we picked up our luggage at baggage claim, someone ripped my luggage with a knife or blunt object and destroyed it!! I will be filling a claim for this and took pictures. I heard great reviews about this airline but am disappointed.

Frontier
6.3
Okay
4,060 reviews
Alaska Airlines
8.1
Very good
9,157 reviews
Check prices

Crew

8.6

Boarding

8.2

Comfort

7.9

Overall

8.1

Food

7.3

Entertainment

7.3

Reviews

1 / 10

We paid $161 for two exit row seats thinking there’d be extra leg room and not be cramped! The price we paid was a rip-off for these seats and the plane was extremely narrow and cramped. The male crew were okay but not super-friendly. When we picked up our luggage at baggage claim, someone ripped my luggage with a knife or blunt object and destroyed it!! I will be filling a claim for this and took pictures. I heard great reviews about this airline but am disappointed.

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.

  • Can I find flights from Missouri to Ontario for under $200 on Cheapflights?

    Yes, there are multiple flights from Missouri to Ontario for under $200. The cheapest flight booked recently is on Frontier for just $131, but on average you can expect to pay $146.

  • Are there last-minute flights available from Missouri to Ontario for under $200?

    There are currently 20+ open flights from Missouri to Ontario within the next 7 days for less than $200.

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

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

  • What are the most popular airlines that fly from Missouri to Ontario?

    When booking a flight from Missouri to Ontario, you may want to consider flying on American Airlines, Delta or Frontier as they are the most popular for this route.

  • What does STL to ONT mean?

    This is defined as Lambert-St Louis Airport (STL) and Ontario Airport (ONT). Codes like Ontario Airport are often used to just call airports uniquely. Kansas City Airport (MCI), Springfield-Branson Airport (SGF), Columbia Regional Airport (COU), Kansas City Downtown Airport (MKC), Branson Airport (BKG) are other airports near this flight route and their unique identifiers/IATA codes.

  • Can I find deals for flights from Missouri to Ontario that include extra baggage allowance?

    The amount of baggage you can bring on your Missouri to Ontario flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

  • Can I find deals on flights from Missouri to Ontario with specific airlines?

    Yes, Cheapflights allows you to browse and filter Missouri to Ontario flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

  • 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.

  • Can I find deals for flights from Missouri to Ontario that allow pets onboard?

    Many airlines flying from Missouri to Ontario offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

  • Can I find deals on last-minute flights from Missouri to Ontario?

    Yes, you can often find last-minute deals on Missouri to Ontario flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

  • How recently were the Missouri to Ontario flight deals updated?

    The Missouri to Ontario flight deals you see on this page were last updated on 5/15.

See more FAQs

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Top 5 airlines flying from Missouri to Ontario

Discover the top 5 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 2,637,452 searches. Data last updated May 16, 2024.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$121Average$230FlexibilityNo cancel feeOn-time62%
Search Frontier flights
Spirit AirlinesCheapest$128Average$231FlexibilityNo cancel feeOn-time65%
Search Spirit Airlines flights
DeltaCheapest$175Average$375FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
American AirlinesCheapest$267Average$522FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
United AirlinesCheapest$276Average$569FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
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Search flights from Missouri to Ontario by cabin class

Find flights from Missouri to Ontario, based on your preferred cabin class, be it economy, premium economy, business, or first class.
First Class
Business Class
Prem Econ Class
Economy Class

Hourly flight availability from Missouri to Ontario

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 May 16, 2024.
1%of flight departuresEarly morningMidnight to 6 am
66%of flight departuresMorning6 am to noon
0%of flight departuresAfternoonNoon to 6 pm
33%of flight departuresEvening6 pm to midnight
Midnight
6 AM
Noon
6 PM

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Flights to Miyakojima Hirara

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