$187 Find Cheap Flights from Ottawa to Missouri

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Ottawa to Missouri departing on 6/7. 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

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

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ottawa to Missouri, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ottawa to Missouri, as well as popular online travel agencies
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 24% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Ottawa to Missouri

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
St. Louis
St. Louis1 stop$314
Kansas City
Kansas City1 stop$434
St. Louis
St. Louis1 stop$314
Kansas City
Kansas City1 stop$434

Book Cheap Ottawa to Missouri Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Ottawa to Missouri 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 Ottawa to Missouri

Sat, May 23 - Sun, May 24
Air Canada Logo
2:40 pm - 8:25 pm
YOW
-
STL
6h 45m
1 stop
Air Canada Logo
7:05 am - 1:05 pm
STL
-
YOW
5h 00m
1 stop
$314Air Canada
Sat, May 23 - Wed, May 27
United Airlines Logo
5:50 pm - 11:35 pm
YOW
-
STL
6h 45m
1 stop
United Airlines Logo
6:00 am - 4:38 pm
STL
-
YOW
9h 38m
1 stop
$320United Airlines
Tue, Jun 2 - Wed, Jun 3
United Airlines Logo
10:44 am - 9:16 pm
YOW
-
STL
11h 32m
1 stop
United Airlines Logo
6:00 am - 4:38 pm
STL
-
YOW
9h 38m
1 stop
$321United Airlines
Tue, Jun 2 - Wed, Jun 3
United Airlines Logo
6:00 am - 9:16 pm
YOW
-
STL
16h 16m
2 stops
United Airlines Logo
6:00 am - 4:38 pm
STL
-
YOW
9h 38m
1 stop
$327United Airlines
Fri, Jun 12 - Fri, Jun 19
Air Canada Logo
7:00 am - 12:06 pm
YOW
-
STL
6h 06m
1 stop
Air Canada Logo
2:15 pm - 9:15 pm
STL
-
YOW
6h 00m
1 stop
$328Air Canada
Sat, May 23 - Wed, May 27
United Airlines Logo
2:52 pm - 9:23 pm
YOW
-
STL
7h 31m
2 stops
United Airlines Logo
6:00 am - 5:11 pm
STL
-
YOW
10h 11m
2 stops
$382United Airlines
Sat, May 23 - Sun, May 24
Air Canada Logo
2:40 pm - 9:23 pm
YOW
-
STL
7h 43m
2 stops
Air Canada Logo
7:05 am - 1:05 pm
STL
-
YOW
5h 00m
1 stop
$383Air Canada
Fri, Jul 24 - Sat, Aug 8
United Airlines Logo
5:10 am - 12:11 pm
YOW
-
STL
8h 01m
2 stops
United Airlines Logo
9:23 am - 9:35 pm
STL
-
YOW
11h 12m
1 stop
$390United Airlines
Fri, Jun 12 - Fri, Jun 19
United Airlines Logo
5:05 am - 3:46 pm
YOW
-
STL
11h 41m
2 stops
United Airlines Logo
2:15 pm - 9:15 pm
STL
-
YOW
6h 00m
1 stop
$392United Airlines
Tue, Jun 2 - Wed, Jun 3
Delta Logo
6:55 am - 1:10 pm
YOW
-
STL
7h 15m
2 stops
Delta Logo
1:27 pm - 12:20 am
STL
-
YOW
9h 53m
2 stops
$405Delta
Booking Insights

KAYAK's insights & trends for Ottawa to Missouri flights

Get data-powered insights and trends into flights from Ottawa to Missouri to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Ottawa to Missouri?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Ottawa to Missouri departing in May.

What is the cheapest month to fly from Ottawa to Missouri?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Ottawa to Missouri, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Ottawa to Missouri is May, when tickets cost $232 (return) on average. On the other hand, the most expensive months are July and September, when the average cost of round-trip tickets is $578 and $511 respectively.

Find deals

Good to know

Low seasonFebruary
Cheapest flight$187
Best time to beat the crowds with an average 29% drop in price.
Most popular time to fly and prices are also 20% lower on average.
Flight from Ottawa to St. Louis

FAQs - booking Missouri flights

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

    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 Ottawa to Missouri.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Ottawa to 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 Ottawa to Missouri?

    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 from Ottawa to Missouri with an airline and back with another airline.

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

    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 from Ottawa to Missouri up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Ottawa to Missouri

 
See real verified KAYAK customer reviews for airlines flying from Ottawa to Missouri. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Ottawa to Missouri? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.1
Air CanadaOverall score based on 10982 reviews
6.3Food
6.8Entertainment
7.3Boarding
7.1Comfort
7.8Crew
Airline reviews

Flight itself was not bad at all. However: my checked bag (checked in Calgary) did not make it onto this flight as I found out after I landed at EWR. I still don't have it but it appears that it is on its way to me.

10.0 ExcellentAnonymous, Apr 2026
YYZ - EWR
Read more Air Canada reviews

Flight itself was not bad at all. However: my checked bag (checked in Calgary) did not make it onto this flight as I found out after I landed at EWR. I still don't have it but it appears that it is on its way to me.

The crew was amazing! I was a bit surprised and disappointed that there was not wifi available for personal use. The only thing I would change would be the seat cushions. They are not comfortable at all for long flights.

Flight and attendance were very good we had 2 hour delay that took the shine of it

The seat design in the premium economy section leaves virtually no room under the seat to store a bag or purse. Other than that, it was a great flight. Arrived early.

The flight was delayed, but not for weather. We landed over 3hrs later than planned.

The stag were helpful, kind and liked the passengers. The plane was pristinely clean! Great flight!

My flight was delayed more than once, but Air Canada updated us regularly. Friends on other airlines had much worse experiences.

Terrible…. Reported missing luggage’s with injectable meds that needed refrigeration. Yet, delivery could not be expedited. Luggage’s were delivered 5 days after arrival. The meds were useless as ice pack had melted. So disappointed!!!

It was a very small plane and was ok. No food or entertainment so there should be an option for NA.

My seat was covered in vomit and I will be reaching out to Air Canada

Everything you need to know for your flight from Ottawa to Missouri

Information on your arrival and departure airports

Ottawa (YOW)