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Cheap flights from Ottawa to Missouri from C$ 364

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 15/9. Fares are subject to change and may not be available on all flights or dates of travel.
YOW — STL
6 Sep — 13 Sep1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Ottawa to Missouri

Enter your travel dates to find the best prices.

Cheapest flights from Ottawa to Missouri
Explore the most affordable flight options available from Ottawa to Missouri. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 7 August 2026.

Fri 23/107:00 a.m. -
1 stop13h 39m
Mon 26/1010:35 a.m. -
2 stops29h 09m
Deal found 6/8C$ 605
Mon 31/82:35 p.m. -
1 stop5h 07m
Wed 9/912:10 p.m. -
1 stop6h 35m
Deal found 6/8C$ 632
Sat 24/1010:00 a.m. -
1 stop5h 00m
Mon 26/104:05 p.m. -
1 stop4h 45m
Deal found 6/8C$ 640
Tue 1/126:15 a.m. -
1 stop15h 58m
Wed 2/126:30 a.m. -
1 stop5h 56m
Deal found 3/8C$ 660
Thu 5/117:05 a.m. -
1 stop26h 41m
Tue 10/112:17 p.m. -
2 stops25h 27m
Deal found 4/8C$ 682
Fri 4/96:25 a.m. -
1 stop5h 00m
Sun 6/97:30 a.m. -
1 stop8h 46m
Deal found 6/8C$ 695
Sat 31/106:00 a.m. -
1 stop11h 53m
Tue 3/113:20 p.m. -
1 stop5h 36m
Deal found 4/8C$ 741
Sat 24/106:25 a.m. -
1 stop6h 49m
Mon 26/107:30 a.m. -
2 stops10h 57m
Deal found 6/8C$ 743
Sat 12/96:00 a.m. -
2 stops11h 12m
Tue 15/911:22 a.m. -
1 stop4h 54m
Deal found 3/8C$ 743
Tue 1/129:55 a.m. -
2 stops6h 46m
Wed 2/127:33 a.m. -
1 stop5h 36m
Deal found 3/8C$ 744
Sat 7/114:36 p.m. -
1 stop6h 15m
Mon 9/1111:27 a.m. -
2 stops9h 29m
Deal found 5/8C$ 773
Thu 5/119:45 a.m. -
1 stop11h 10m
Tue 10/1111:33 a.m. -
1 stop6h 54m
Deal found 4/8C$ 778

Find flight deals from Ottawa to Missouri

Keep the following information in mind while searching for Ottawa to Missouri flight deals. Data was last updated 7 August 2026.

Round-trip from

C$ 605

One-way from

C$ 364

Popular in

September

Cheapest in

February

Average price

C$ 563
23/10-26/10
  • 23/10-26/10
  • 3 total stops
  • 42h 48m total
  • Ottawa to Missouri
Search Deals
15/9
  • 15/9
  • 3 total stops
  • 31h 10m total
  • Ottawa to Missouri
Search Deals
Highest demand for flights based on searches. 21% potential increase in price (C$ 269 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease (C$ 62 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in August 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ottawa to Missouri that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 629,999 searches. Data last updated 7 August 2026.
Use the filters below to find and compare flights from Ottawa to Missouri that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OttawaSt. Louis

YOW Ottawa - STL Lambert-St Louis

YOWSTL

Ottawa

Tue 1/12

6:15 a.m.-9:13 p.m.

1 stop15h 58m

Lambert-St Louis

Wed 2/12

6:30 a.m.-1:26 p.m.

1 stop5h 56m

C$ 660

OttawaSt. Louis

YOW Ottawa - STL Lambert-St Louis

YOWSTL

Ottawa

Thu 10/9

6:00 a.m.-9:39 a.m.

1 stop4h 39m

Lambert-St Louis

Mon 14/9

8:00 a.m.-9:35 p.m.

1 stop12h 35m

C$ 741

OttawaSt. Louis

YOW Ottawa - STL Lambert-St Louis

YOWSTL

Ottawa

Mon 31/8

6:00 a.m.-3:38 p.m.

3 stops10h 38m

Lambert-St Louis

Wed 9/9

9:43 a.m.-5:16 p.m.

1 stop6h 33m

C$ 741

OttawaKansas City

YOW Ottawa - MCI Kansas City

YOWMCI

Ottawa

Sat 31/10

4:36 p.m.-9:51 p.m.

1 stop6h 15m

Kansas City

Tue 3/11

7:36 a.m.-9:56 p.m.

2 stops13h 20m

C$ 741

OttawaKansas City

YOW Ottawa - MCI Kansas City

YOWMCI

Ottawa

Wed 13/1

2:00 p.m.-9:49 p.m.

2 stops8h 49m

Kansas City

Tue 19/1

8:00 a.m.-2:12 p.m.

1 stop5h 12m

C$ 741

OttawaKansas City

YOW Ottawa - MCI Kansas City

YOWMCI

Ottawa

Thu 10/9

5:57 p.m.-8:56 a.m.

2 stops15h 59m

Kansas City

Sun 13/9

6:00 a.m.-4:38 p.m.

1 stop9h 38m

C$ 741

OttawaKansas City

YOW Ottawa - MCI Kansas City

YOWMCI

Ottawa

Fri 4/9

6:05 a.m.-5:30 p.m.

2 stops12h 25m

Kansas City

Sun 6/9

5:39 p.m.-11:54 p.m.

1 stop5h 15m

C$ 741

OttawaKansas City

YOW Ottawa - MCI Kansas City

YOWMCI

Ottawa

Fri 25/9

6:01 p.m.-11:59 p.m.

1 stop6h 58m

Kansas City

Mon 28/9

6:39 p.m.-9:11 a.m.

2 stops13h 32m

C$ 741

OttawaSt. Louis

YOW Ottawa - STL Lambert-St Louis

YOWSTL

Ottawa

Sat 24/10

6:05 a.m.-3:43 p.m.

2 stops10h 38m

Lambert-St Louis

Mon 26/10

1:08 p.m.-9:56 p.m.

2 stops7h 48m

C$ 743
Quickest round-trip

OttawaSt. Louis

YOW Ottawa - STL Lambert-St Louis

YOWSTL

Ottawa

Tue 1/12

9:55 a.m.-3:41 p.m.

2 stops6h 46m

Lambert-St Louis

Wed 2/12

7:33 a.m.-2:09 p.m.

1 stop5h 36m

C$ 744

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/8

Showing 1-10 of 15 resultsSorted by cheapest first
1
2

Best time to book a flight from Ottawa to Missouri

Have a flexible travel schedule? Discover the best time to fly to Missouri from Ottawa with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

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

What is the cheapest month to book a flight from Ottawa to Missouri?

Currently, May is the cheapest month in which you can book a flight from Ottawa to Missouri (average of C$ 481). Flying from Ottawa to Missouri in October is currently the most expensive (average of C$ 816). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

How much does it cost to fly round-trip from Ottawa to Missouri?

Airfare is below average for this route at the moment.
Ottawa to Missouri flights typically cost between C$ 660 and C$ 1,302 in October.
The cheapest round-trip price found within the last 5 days was C$ 605 on Multiple Airlines (23 Oct-26 Oct).

Reviews of airlines servicing Missouri

Get insights into the airlines that provide service to Missouri. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Missouri. Reviews last updated 7 August 2026.
Get a feel of what it's like to fly with United Airlines and Air Canada from Ottawa to Missouri by reading reviews from past customers. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
10,084 reviews
Check prices

Crew

8.1

Comfort

7.3

Food

6.7

Entertainment

7.1

Overall

7.4

Boarding

7.7

Reviews

1 / 20
6.0
Good

Gerry,Jan 2026

YVR - DEN

Seats were uncomfortable. Second leg of my flight on United had much more comfortable seats
United Airlines
7.4
Good
10,084 reviews
United Airlines
7.4
Good
10,084 reviews
Check prices

Crew

8.1

Comfort

7.3

Food

6.7

Entertainment

7.1

Overall

7.4

Boarding

7.7

Reviews

1 / 20
6.0
Good

Gerry,Jan 2026

YVR - DEN

Seats were uncomfortable. Second leg of my flight on United had much more comfortable seats
Air Canada
7.1
Good
11,437 reviews
United Airlines
7.4
Good
10,084 reviews
Check prices

Crew

8.1

Comfort

7.3

Food

6.7

Entertainment

7.1

Overall

7.4

Boarding

7.7

Reviews

1 / 20
6.0
Good

Gerry,Jan 2026

YVR - DEN

Seats were uncomfortable. Second leg of my flight on United had much more comfortable seats

Related info for your journey

Find useful and relevant information for your journey from Ottawa to Missouri. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Ottawa to Missouri?

    If you book a flight to Missouri from Ottawa, you will be flying from Ottawa, which is the city’s only airport. Ottawa (YOW) is located 10.6 km from the centre of Ottawa.

  • How long is the flight from Ottawa to Missouri?

    United Airlines can get you from Ottawa to Missouri in just under 15h 58m. Your travel time can differ by up to . The distance between Ottawa and Missouri is about 1413 km.

  • Can I find deals for flights from Ottawa to Missouri that include hotel bookings?

    Yes. In addition to deals on Ottawa to Missouri flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Ottawa to Missouri?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ottawa to Missouri.

  • Can I find deals for business class flights from Ottawa to Missouri?

    Yes. Cheapflights offers flight deals from Ottawa to Missouri by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Ottawa to Missouri?

    Currently, May is the cheapest month in which you can book a flight from Ottawa to Missouri (average of C$ 481). Flying from Ottawa to Missouri in October is currently the most expensive (average of C$ 816). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for Ottawa to Missouri

See prices for flight routes from nearby airports that may be better suited for you.
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Top 2 airlines flying from Ottawa to Missouri

Discover the top 2 airlines that operate flights from Ottawa to Missouri. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 629,999 searches. Data last updated 7 August 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapestC$ 403AverageC$ 672FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Air CanadaCheapestC$ 412AverageC$ 697FlexibilityNo cancel feeOn-time67%
Search Air Canada flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Ottawa to Missouri?

Deals for Ottawa to Missouri flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

Why should you use Cheapflights to find cheap flight tickets from Ottawa to Missouri?

Millions of users choose and trust Cheapflights to book the best flight deals from Ottawa to Missouri for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

Can Cheapflights find flights from Ottawa to Missouri with no change fees?

Need flexible booking options for your flight to Missouri from Ottawa? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from Ottawa to Missouri become cheaper?

Yes! Start tracking prices for Ottawa to Missouri flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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