C$ 298 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 18/5. 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

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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
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Flights Deals

Best Missouri Flight Deals from Ottawa

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours

Kansas City
Kansas City2 stopsC$ 569
St. Louis
St. Louis1 stopC$ 563
Kansas City
Kansas City2 stopsC$ 569
St. Louis
St. Louis1 stopC$ 563

Cheap Flight Deals from Ottawa to Missouri (YOW-USMO)

 
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.

Recent round-trip flight deals from Ottawa to Missouri

Recommended round-trip deals departing in the coming months from the most popular airlines that fly from Ottawa to Missouri.
Discover the best prices for you by selecting your travel dates on KAYAK.
 Logo
3:50 p.m. - 9:15 a.m.YOW-STL
18h 25m1 stop
 Logo
5:45 p.m. - 5:06 p.m.STL-YOW
22h 21m1 stop
C$ 563
Find Deal
Fri, 30 May - Sun, 1 Jun
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3:35 p.m. - 5:45 p.m.YOW-MCI
27h 10m2 stops
 Logo
6:45 p.m. - 7:55 p.m.MCI-YOW
24h 10m1 stop
C$ 569
Find Deal
Tue, 27 May - Tue, 3 Jun
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12:20 p.m. - 5:45 p.m.YOW-MCI
30h 25m3 stops
 Logo
6:45 p.m. - 7:55 p.m.MCI-YOW
24h 10m1 stop
C$ 577
Find Deal
Tue, 27 May - Tue, 3 Jun
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3:35 p.m. - 5:45 p.m.YOW-MCI
27h 10m2 stops
 Logo
6:45 p.m. - 5:25 a.m.MCI-YOW
33h 40m3 stops
C$ 583
Find Deal
Tue, 27 May - Tue, 3 Jun
 Logo
12:20 p.m. - 5:45 p.m.YOW-MCI
30h 25m3 stops
 Logo
6:45 p.m. - 5:25 a.m.MCI-YOW
33h 40m3 stops
C$ 591
Find Deal
Tue, 27 May - Tue, 3 Jun
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4:25 p.m. - 1:50 p.m.YOW-MCI
22h 25m1 stop
 Logo
6:45 p.m. - 7:55 p.m.MCI-YOW
24h 10m1 stop
C$ 605
Find Deal
Tue, 27 May - Tue, 3 Jun
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4:25 p.m. - 11:53 p.m.YOW-STL
8h 28m1 stop
 Logo
5:47 p.m. - 5:06 p.m.STL-YOW
22h 19m1 stop
C$ 709
Find Deal
Sat, 14 Jun - Sat, 21 Jun
WestJet Logo
5:55 a.m. - 8:49 p.m.YOW-STL
15h 54m2 stops
WestJet Logo
6:00 a.m. - 12:22 a.m.STL-YOW
17h 22m2 stops
C$ 854WestJet
Find Deal
Fri, 30 May - Sun, 1 Jun
United Airlines Logo
10:37 a.m. - 2:56 p.m.YOW-STL
5h 19m1 stop
United Airlines Logo
8:05 a.m. - 6:52 p.m.STL-YOW
9h 47m2 stops
C$ 912United Airlines
Find Deal
Sat, 14 Jun - Sat, 21 Jun
WestJet Logo
5:55 a.m. - 1:19 p.m.YOW-STL
8h 24m2 stops
WestJet Logo
10:45 a.m. - 12:22 a.m.STL-YOW
12h 37m2 stops
C$ 970WestJet
Find Deal
Fri, 30 May - Sun, 1 Jun
Useful Info

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.

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 April, when tickets cost C$ 429 (return) on average. On the other hand, the most expensive months are October and November, when the average cost of round-trip tickets is C$ 1,260 and C$ 1,237 respectively.


Good to know

Low seasonJune
High seasonApril
Cheapest flightC$ 298
Best time to beat the crowds (9% less expensive on average)
Most popular time to fly and prices are also 24% 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 travellers 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.

  • What is the cheapest time of day to fly to Missouri?

    The cheapest time of day to fly to Missouri is generally in the morning, when round-trip flights cost C$ 641 on average. Morning departures are around 5% cheaper than evening flights, on average. The most expensive time of day to fly to Missouri is generally at night, which is peak travel time and where the average cost of a ticket is C$ 701.

Top airlines 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.
7.4
United AirlinesOverall score based on 8696 reviews
7.7Boarding
6.6Food
7.3Comfort
7.1Entertainment
8.1Crew
Airline reviews

Our flights got changed from United to Air Canada and our purchased seats did not get transferred so we had to pay for seats twice. I brought it up with Air Canada and they stated I had to go back and chase it with United. The united seats were $21 Canadian each and Air Canada were $56 each so we have paid $77 for each seat. Very unhappy

2.0 MediocreBrant, Apr 2025YHZ - EWR
Read more United Airlines reviews

Our flights got changed from United to Air Canada and our purchased seats did not get transferred so we had to pay for seats twice. I brought it up with Air Canada and they stated I had to go back and chase it with United. The united seats were $21 Canadian each and Air Canada were $56 each so we have paid $77 for each seat. Very unhappy

So far so good but food and entertainment are not available for this flight

Plane temperature was comfortable (not to hot) when boarding and waiting for takeoff.

Michael, our FA was very attentive, even finding me a chocolate brownie from economy class when the dessert selections were all dairy based. ( intolerant, not allergic so don’t usually need to order dairy free)

We tried to upgrade to economy premium but were told this was not possible as we had booked through United Airlines (and Air Canada was operating the flight). This seemed silly given there was ample space in economy premium. Additionally, we had to wait almost 1.5 hours upon arrival to taxi to the gate. Otherwise, the crew were very pleasant and passengers were friendly.

It was my first time with United Airlines and I would say it was very good experience and best of all the flights were on time. Will definitely fly with United Airlines next time.

headphone jack didnt work for the first flight and not much variety

Plane 3 hours late. Missed connection. No help from gate staff. App horrible. Lost connection repeatedly. No service desk. Finally got help from young girl driving cart.

Not as good as expected Air Can needs to improve totally rated on internet as worst

The flight was delayed, it took longer than anticipated because of weather, and they broke my luggage.

My flight got delayed 5 times and then got cancelled eventually, I had to get a hotel and uber and pay for food for an extra night without any plans. It was a horrible experience, instead of Air Canada, I was flying with United .

I had a nice flight with free wifi. So I was able to message family members and stream music during my flight, which made the trip go by fast. I also enjoyed flying on there Airbus A220. The plane looked very new and it also got up to speed fast down the runway and didn't need much runway to get airborne.

They lost my checked in luggage, why do I pay for my cargo not arriving at the same destination as me?

Overall good experience. The flight from Toronto to Denver does not have entertainment - movies to watch.

Poor planning meant the plane was delayed an hour, then a thunder storm started and the ground staff couldn't work. Eventual arrival in Santiago was 3 hours late resulting in missed connections and the need to buy new tickets.

Ensure prepaid food arrangements are appropriately understood by flight crew of who purchased and who did not

All was fine. Weather was a bit stormy, but nothing kayak can do about that! 😊

I paid for a comfort class seat and was seated in economy.

The take off was delayed as we were told that the baggages had to be rearranged to balance the weight. I only took a carry-on and a personal item, but the overhead bin was extremely small, even a normal size carryon can’t fit it, so they had to check it in for free. The seat was really tight and no entertainment at all.

My plane was cancelled and had to be rebook for the evening was not happy.

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

Information on your arrival and departure airports

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