ONT

$105 Find Cheap Flights from Missouri to Ontario - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to Ontario departing on 9/19. 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.
1 adult
1 adult, Economy, 0 bags

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Flight Deals

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.

Recent round-trip flight deals from Missouri to Ontario

Fri, Jul 31 - Tue, Aug 4
Frontier Logo
7:10 pm - 8:03 am
STL
-
ONT
14h 53m
1 stop
Frontier Logo
6:00 am - 7:23 pm
ONT
-
STL
11h 23m
1 stop
$234Frontier
Sat, Aug 15 - Sat, Aug 22
Frontier Logo
1:45 pm - 11:50 pm
MCI
-
ONT
12h 05m
1 stop
Frontier Logo
6:00 am - 12:53 pm
ONT
-
MCI
4h 53m
1 stop
$243Frontier
Wed, Jul 29 - Tue, Aug 11
Frontier Logo
1:45 pm - 11:50 pm
MCI
-
ONT
12h 05m
1 stop
Frontier Logo
6:00 am - 1:00 pm
ONT
-
MCI
5h 00m
1 stop
$244Frontier
Sat, Aug 15 - Sat, Aug 22
Frontier Logo
1:45 pm - 11:50 pm
MCI
-
ONT
12h 05m
1 stop
Frontier Logo
3:40 pm - 4:02 pm
ONT
-
MCI
22h 22m
1 stop
$245Frontier
Wed, Sep 9 - Tue, Sep 15
United Airlines Logo
9:00 am - 12:50 pm
COU
-
ONT
5h 50m
1 stop
United Airlines Logo
1:18 pm - 8:59 pm
ONT
-
COU
5h 41m
1 stop
$318United Airlines
Wed, Sep 9 - Tue, Sep 15
United Airlines Logo
11:20 am - 8:53 pm
COU
-
ONT
11h 33m
2 stops
United Airlines Logo
1:18 pm - 8:59 pm
ONT
-
COU
5h 41m
1 stop
$324United Airlines
Tue, Sep 29 - Tue, Oct 6
American Airlines Logo
6:49 pm - 10:37 pm
SGF
-
ONT
5h 48m
1 stop
American Airlines Logo
2:22 pm - 10:11 pm
ONT
-
SGF
5h 49m
1 stop
$329American Airlines
Tue, Sep 1 - Wed, Sep 9
American Airlines Logo
2:26 pm - 6:47 pm
SGF
-
ONT
6h 21m
1 stop
American Airlines Logo
12:37 pm - 9:37 pm
ONT
-
SGF
7h 00m
1 stop
$352American Airlines
Wed, Aug 5 - Tue, Aug 11
Multiple Airlines Logo
2:51 pm - 3:54 pm
SGF
-
ONT
27h 03m
1 stop
Multiple Airlines Logo
9:36 am - 1:14 pm
ONT
-
SGF
25h 38m
2 stops
$380Multiple Airlines
Tue, Sep 1 - Wed, Sep 9
Delta Logo
6:06 am - 4:24 pm
SGF
-
ONT
12h 18m
2 stops
Delta Logo
12:17 pm - 10:08 pm
ONT
-
SGF
7h 51m
1 stop
$389Delta
Useful Info

Good to know

Low seasonJanuary
Cheapest flight$105
Best time to beat the crowds with an average 4% drop in price.
Most popular time to fly and prices are also 1% lower on average.
Flight from Kansas City to Ontario

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

Ontario (ONT)