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.

$67 CHEAP FLIGHTS from Missouri to Ontario

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Flight Deals

Cheap Flights from Missouri to Ontario

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

Sat, Oct 24 - Sat, Oct 31

8:43 pm - 11:50 pmMCI Kansas City-ONT Ontario

5h 07m1 stop Denver Intl

11:52 am - 7:47 pmONT Ontario-MCI Kansas City

5h 55m1 stop Denver Intl

$147Frontier

Wed, Oct 21 - Wed, Oct 28

8:43 pm - 11:50 pmMCI Kansas City-ONT Ontario

5h 07m1 stop Denver Intl

6:25 am - 7:47 pmONT Ontario-MCI Kansas City

11h 22m1 stop Denver Intl

$159Frontier

Tue, Oct 27 - Tue, Nov 3

8:43 pm - 11:51 pmMCI Kansas City-ONT Ontario

5h 08m1 stop Denver Intl

12:02 pm - 11:59 pmONT Ontario-MCI Kansas City

9h 57m1 stop Seattle/Tacoma Intl

$289Multiple Airlines

Tue, Nov 3 - Wed, Nov 4

6:00 am - 3:13 pmSTL Lambert-St Louis-ONT Ontario

11h 13m1 stop Seattle/Tacoma Intl

6:25 am - 3:23 pmONT Ontario-STL Lambert-St Louis

6h 58m1 stop Denver Intl

$305Multiple Airlines

Wed, Jan 20 - Wed, Jan 27

9:00 am - 12:33 pmCOU Columbia Regional-ONT Ontario

5h 33m1 stop Denver Intl

1:00 pm - 8:30 pmONT Ontario-COU Columbia Regional

5h 30m1 stop Denver Intl

$348United Airlines

Sat, Dec 12 - Thu, Dec 17

6:20 am - 9:50 amSTL Lambert-St Louis-ONT Ontario

5h 30m1 stop Phoenix Sky Harbor Intl

4:00 pm - 12:15 amONT Ontario-STL Lambert-St Louis

6h 15m1 stop Phoenix Sky Harbor Intl

$352Southwest

Wed, Jan 20 - Wed, Jan 27

11:30 am - 8:20 pmCOU Columbia Regional-ONT Ontario

10h 50m2 stops Chicago O'Hare Intl Denver Intl

1:00 pm - 8:30 pmONT Ontario-COU Columbia Regional

5h 30m1 stop Denver Intl

$354United Airlines

Thu, Jan 28 - Thu, Feb 4

12:08 pm - 6:51 pmCOU Columbia Regional-ONT Ontario

8h 43m1 stop Dallas/Fort Worth

9:28 am - 9:50 pmONT Ontario-COU Columbia Regional

10h 22m2 stops Phoenix Sky Harbor Intl Chicago O'Hare Intl

$354American Airlines

Sat, Dec 12 - Sat, Jan 9

10:21 am - 6:10 pmSTL Lambert-St Louis-ONT Ontario

9h 49m2 stops Dallas/Fort Worth Phoenix Sky Harbor Intl

6:26 am - 7:46 pmONT Ontario-STL Lambert-St Louis

11h 20m1 stop Chicago O'Hare Intl

$356American Airlines

Sat, Dec 12 - Thu, Dec 17

6:35 am - 12:50 pmSTL Lambert-St Louis-ONT Ontario

8h 15m2 stops Denver Intl Phoenix Sky Harbor Intl

4:00 pm - 12:15 amONT Ontario-STL Lambert-St Louis

6h 15m1 stop Phoenix Sky Harbor Intl

$362Southwest

Recent last minute flight deals from Missouri to Ontario

Sat, Oct 3 - Tue, Oct 6

8:32 pm - 11:47 pmMCI Kansas City-ONT Ontario

5h 15m1 stop Denver Intl

6:15 am - 7:37 pmONT Ontario-MCI Kansas City

11h 22m1 stop Denver Intl

$378Frontier

Sat, Oct 3 - Tue, Oct 6

8:32 pm - 11:47 pmMCI Kansas City-ONT Ontario

5h 15m1 stop Denver Intl

11:45 am - 7:37 pmONT Ontario-MCI Kansas City

5h 52m1 stop Denver Intl

$378Frontier

Fri, Oct 2 - Sun, Oct 4

4:51 pm - 10:37 pmCOU Columbia Regional-ONT Ontario

7h 46m1 stop Dallas/Fort Worth

7:11 pm - 9:58 amONT Ontario-COU Columbia Regional

12h 47m2 stops Phoenix Sky Harbor Intl Chicago O'Hare Intl

$494American Airlines

Tue, Sep 29 - Sat, Oct 3

3:19 pm - 11:47 pmSGF Springfield-Branson-ONT Ontario

10h 28m2 stops Atlanta Hartsfield-Jackson Salt Lake City

12:17 pm - 9:16 pmONT Ontario-SGF Springfield-Branson

6h 59m1 stop Atlanta Hartsfield-Jackson

$504Delta

Wed, Sep 30 - Sat, Oct 3

9:00 am - 12:46 pmCOU Columbia Regional-ONT Ontario

5h 46m1 stop Denver Intl

1:22 pm - 8:33 pmONT Ontario-COU Columbia Regional

5h 11m1 stop Denver Intl

$518United Airlines

Wed, Sep 30 - Sun, Oct 4

7:00 am - 1:25 pmCOU Columbia Regional-ONT Ontario

8h 25m1 stop Dallas/Fort Worth

7:11 pm - 9:58 amONT Ontario-COU Columbia Regional

12h 47m2 stops Phoenix Sky Harbor Intl Chicago O'Hare Intl

$524American Airlines

Wed, Sep 30 - Sat, Oct 3

3:19 pm - 10:49 pmCOU Columbia Regional-ONT Ontario

9h 30m1 stop Chicago O'Hare Intl

11:10 am - 10:55 pmONT Ontario-COU Columbia Regional

9h 45m2 stops San Francisco Chicago O'Hare Intl

$524United Airlines

Fri, Oct 2 - Tue, Oct 6

8:10 pm - 11:47 pmSTL Lambert-St Louis-ONT Ontario

5h 37m1 stop Denver Intl

2:13 pm - 11:59 pmONT Ontario-STL Lambert-St Louis

7h 46m1 stop Seattle/Tacoma Intl

$549Multiple Airlines

Sun, Oct 4 - Sat, Oct 10

5:10 pm - 11:00 pmSTL Lambert-St Louis-ONT Ontario

7h 50m2 stops Pensacola Houston Hobby

9:25 am - 6:25 pmONT Ontario-STL Lambert-St Louis

7h 00m2 stops Phoenix Sky Harbor Intl Denver Intl

$685Southwest

Fri, Oct 2 - Tue, Oct 6

2:25 pm - 9:20 pmSTL Lambert-St Louis-ONT Ontario

8h 55m2 stops Denver Intl Phoenix Sky Harbor Intl

6:50 am - 5:45 pmONT Ontario-STL Lambert-St Louis

8h 55m2 stops Denver Intl Omaha Eppley Airfield

$713Southwest

Useful Info

Low season	January
High season	October
Cheapest flight	$67

Best time to beat the crowds with an average 8% drop in price.

Most popular time to fly and prices are also 16% lower on average.

Flight from Kansas City 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.