ONT

$60 Find Cheap Flights from Missouri to Ontario

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 4/25. 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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Everything you should know

Cheapest round-trip
$160
Overall average: $348
Frontier
Thu 4/30Fri 5/1
STL - ONT • 1 stop
Cheapest one-way
$60
Typical prices: $197-$349
Frontier
Sat 4/25
MCI - ONT • 1 stop
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Flight Deals
Useful Info
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

Thu, Apr 30 - Fri, May 1
Frontier Logo
8:12 pm - 7:31 am
STL
-
ONT
13h 19m
1 stop
Frontier Logo
12:59 am - 7:12 pm
ONT
-
STL
16h 13m
1 stop
$160Frontier
Thu, Apr 23 - Sat, Apr 25
Frontier Logo
2:15 pm - 11:55 pm
MCI
-
ONT
11h 40m
1 stop
Frontier Logo
12:59 am - 1:30 pm
ONT
-
MCI
10h 31m
1 stop
$167Frontier
Mon, Mar 9 - Tue, Mar 17
Multiple Airlines Logo
8:38 pm - 11:59 pm
MCI
-
ONT
29h 21m
1 stop
Multiple Airlines Logo
2:23 pm - 5:09 pm
ONT
-
MCI
24h 46m
1 stop
$177Multiple Airlines
Sun, Apr 12 - Wed, Apr 15
Multiple Airlines Logo
6:04 pm - 8:04 am
MCI
-
ONT
16h 00m
1 stop
Multiple Airlines Logo
2:44 pm - 11:33 pm
ONT
-
MCI
6h 49m
1 stop
$203Multiple Airlines
Tue, Apr 21 - Tue, Apr 28
United Airlines Logo
2:52 pm - 9:50 pm
SGF
-
ONT
8h 58m
1 stop
United Airlines Logo
1:34 pm - 9:01 pm
ONT
-
SGF
5h 27m
1 stop
$289United Airlines
Thu, Mar 5 - Mon, Mar 9
American Airlines Logo
6:00 am - 10:06 am
SGF
-
ONT
6h 06m
1 stop
American Airlines Logo
11:59 pm - 12:28 pm
ONT
-
SGF
10h 29m
1 stop
$334American Airlines
Thu, Feb 26 - Sun, Mar 1
American Airlines Logo
11:48 am - 9:24 pm
SGF
-
ONT
11h 36m
1 stop
American Airlines Logo
11:58 pm - 8:59 am
ONT
-
SGF
7h 01m
1 stop
$339American Airlines
Tue, Apr 21 - Tue, Apr 28
United Airlines Logo
8:30 am - 6:02 pm
SGF
-
ONT
11h 32m
2 stops
United Airlines Logo
1:34 pm - 9:01 pm
ONT
-
SGF
5h 27m
1 stop
$342United Airlines
Wed, May 27 - Tue, Jun 2
Delta Logo
3:22 pm - 9:54 pm
SGF
-
ONT
8h 32m
1 stop
Delta Logo
7:05 am - 6:06 pm
ONT
-
SGF
9h 01m
1 stop
$354Delta
Tue, Jun 2 - Tue, Jun 9
Delta Logo
3:22 pm - 9:54 pm
SGF
-
ONT
8h 32m
1 stop
Delta Logo
7:00 am - 6:10 pm
ONT
-
SGF
9h 10m
1 stop
$388Delta
Useful Info

Good to know

Low seasonJanuary
Cheapest flight$60
Best time to beat the crowds with an average 1% drop in price.
Most popular time to fly with an average 2% increase in price.
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)