How does KAYAK find such low prices on flights from Missouri to Ontario?

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Missouri to Ontario. Visit our flight page for the latest deals!>/a>

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Missouri to Ontario?

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Ontario from Missouri is likely to change within 7 days, so travelers know whether to wait or book now. Visit our flight page for the latest deals!>/a>

What is the Hacker Fare option on flights from Missouri to Ontario?

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Ontario with an airline and back to Missouri with another airline. Visit our flight page for the latest deals!>/a>

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Missouri to Ontario?

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Ontario from Missouri up to 3 days before/after your preferred dates. You can then pick the flights that suit you best. Visit our flight page for the latest deals!>/a>

$72 CHEAP FLIGHTS from Missouri to Ontario

ONT

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Cheap Flights from Missouri to Ontario

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Missouri to Ontario that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.

Discover the best prices for you by selecting your travel dates on KAYAK.

Round-trip

One-way

Last minute

Recent round-trip flight deals from Missouri to Ontario

sáb, set 13 - sáb, set 20

7:55 pm - 7:23 amSTL-ONT

13h 28m1 stop

8:59 pm - 9:06 amONT-STL

10h 07m1 stop

$143Frontier

Find Deal

sáb, set 6 - sex, set 12

7:55 pm - 7:23 amSTL-ONT

13h 28m1 stop

8:59 pm - 9:06 amONT-STL

10h 07m1 stop

$144Frontier

Find Deal

sáb, set 6 - sáb, set 13

4:05 pm - 7:17 amMCI-ONT

17h 12m2 stops

8:59 pm - 1:48 pmONT-MCI

14h 49m1 stop

$232

Find Deal

sex, out 31 - qui, nov 6

6:35 pm - 12:37 pmMCI-ONT

20h 02m1 stop

10:10 am - 12:40 amONT-MCI

12h 30m1 stop

$235

Find Deal

ter, set 16 - ter, set 23

7:00 am - 2:12 pmMCI-ONT

9h 12m1 stop

7:10 am - 4:01 pmONT-MCI

6h 51m1 stop

$269Alaska Airlines

Find Deal

ter, set 23 - ter, out 14

10:46 am - 6:16 pmMCI-ONT

9h 30m2 stops

1:00 pm - 10:50 pmONT-MCI

7h 50m2 stops

$279American Airlines

Find Deal

ter, set 16 - ter, set 30

5:18 am - 11:56 amSTL-ONT

8h 38m2 stops

6:10 am - 3:09 pmONT-STL

6h 59m1 stop

$282American Airlines

Find Deal

qui, set 4 - sáb, set 13

7:00 am - 2:12 pmMCI-ONT

9h 12m1 stop

7:10 am - 4:01 pmONT-MCI

6h 51m1 stop

$285Alaska Airlines

Find Deal

dom, set 21 - qua, out 1

5:45 am - 8:57 amMCI-ONT

5h 12m1 stop

9:55 am - 5:08 pmONT-MCI

5h 13m1 stop

$298Delta

Find Deal

dom, nov 2 - dom, nov 9

5:00 am - 2:53 pmSGF-ONT

11h 53m2 stops

7:00 am - 6:08 pmONT-SGF

9h 08m1 stop

$873Delta

Find Deal

Useful Info

Low season	February
High season	November
Cheapest flight	$72

Best time to beat the crowds with an average 5% drop in price.

Most popular time to fly with an average 1% increase in price.

Flight from St. Louis to Ontario

How does KAYAK find such low prices on flights from Missouri to Ontario?
KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Missouri to Ontario.
How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Missouri to Ontario?
KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Ontario from Missouri is likely to change within 7 days, so travelers know whether to wait or book now.
What is the Hacker Fare option on flights from Missouri to Ontario?
Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Ontario with an airline and back to Missouri with another airline.
What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Missouri to Ontario?
Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Ontario from Missouri up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Everything you need to know for your flight to Ontario

Airports

Cabin class

Complete your trip

Direct Flights

Flights to other cities

Origins

Other airports

Return flight deals

Information on the airport you'll fly into in Ontario

Ontario (ONT)

Not what you’re looking for? Find thousands of other hotels, flights, car rentals and package deals with KAYAK.

ONT

$72 Find Cheap Flights from Missouri to Ontario

KAYAK searches hundreds of travel sites at once for deals on flights to Ontario

Cheap Flights from Missouri to Ontario

Recent round-trip flight deals from Missouri to Ontario

Recent one-way flight deals from Missouri to Ontario

Recent last minute flight deals from Missouri to Ontario

Good to know

FAQs for booking flights from Missouri to Ontario

How does KAYAK find such low prices on flights from Missouri to Ontario?

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Missouri to Ontario.

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Missouri to Ontario?

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Ontario from Missouri is likely to change within 7 days, so travelers know whether to wait or book now.

What is the Hacker Fare option on flights from Missouri to Ontario?

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Ontario with an airline and back to Missouri with another airline.

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Missouri to Ontario?

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Ontario from Missouri up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Everything you need to know for your flight to Ontario

Information on the airport you'll fly into in Ontario

Cabin class types available on flights to Missouri

Complete your trip to Ontario with a hotel stay or car rental

Find direct flights for Ontario

Flights to other popular destinations

Flights from domestic origins to Ontario

Choose which airport to fly into in Ontario

Find deals for your return flight