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Cheap flights from Ottawa to Missouri from C$ 252

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 28/4. Fares are subject to change and may not be available on all flights or dates of travel.
YOW — STL
15 Apr — 22 Apr1
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 16 March 2026.

Sat 11/42:40 p.m.
YOW
-
STL
1 stop5h 42m
United Airlines
Tue 14/49:10 a.m.
STL
-
YOW
1 stop6h 57m
United Airlines
Deal found 13/3C$ 399
Fri 22/55:20 p.m.
YOW
-
STL
1 stop4h 56m
United Airlines
Sun 24/51:13 p.m.
STL
-
YOW
2 stops9h 41m
United Airlines
Deal found 15/3C$ 423
Sat 11/45:25 p.m.
YOW
-
STL
1 stop4h 48m
United Airlines
Sat 18/48:21 a.m.
STL
-
YOW
2 stops9h 34m
United Airlines
Deal found 14/3C$ 424
Tue 14/410:44 a.m.
YOW
-
STL
1 stop11h 29m
United Airlines
Fri 17/47:45 a.m.
STL
-
YOW
1 stop5h 14m
United Airlines
Deal found 13/3C$ 468
Mon 27/410:44 a.m.
YOW
-
STL
1 stop11h 29m
United Airlines
Mon 4/57:45 a.m.
STL
-
YOW
1 stop5h 14m
United Airlines
Deal found 13/3C$ 472
Thu 16/46:00 a.m.
YOW
-
MCI
2 stops9h 25m
United Airlines
Sat 18/46:15 a.m.
MCI
-
YOW
1 stop9h 52m
United Airlines
Deal found 13/3C$ 472
Sun 26/46:25 a.m.
YOW
-
MCI
1 stop5h 02m
United Airlines
Thu 30/46:17 a.m.
MCI
-
YOW
1 stop14h 18m
United Airlines
Deal found 12/3C$ 473
Mon 13/410:25 a.m.
YOW
-
STL
2 stops11h 48m
United Airlines
Thu 16/49:10 a.m.
STL
-
YOW
1 stop6h 57m
United Airlines
Deal found 13/3C$ 479
Sun 12/46:25 a.m.
YOW
-
STL
1 stop5h 20m
United Airlines
Fri 17/410:00 a.m.
STL
-
YOW
2 stops10h 16m
United Airlines
Deal found 13/3C$ 490
Wed 29/410:44 a.m.
YOW
-
MCI
1 stop6h 19m
United Airlines
Sat 2/59:45 a.m.
MCI
-
YOW
1 stop6h 22m
United Airlines
Deal found 14/3C$ 490
Wed 29/46:25 a.m.
YOW
-
MCI
1 stop9h 00m
United Airlines
Sun 3/56:17 a.m.
MCI
-
YOW
1 stop14h 18m
United Airlines
Deal found 15/3C$ 494
Sun 12/412:00 p.m.
YOW
-
STL
2 stops10h 13m
United Airlines
Mon 20/47:45 a.m.
STL
-
YOW
2 stops12h 31m
United Airlines
Deal found 13/3C$ 502

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 16 March 2026.

Round-trip from

C$ 399

One-way from

C$ 252

Popular in

April

Cheapest in

January

Average price

C$ 1,021
United Airlines
  • United Airlines
  • 11/4-14/4
  • 2 total stops
  • 12h 39m total
  • Ottawa to Missouri
Search Deals
United Airlines
  • United Airlines
  • 28/4
  • 1 total stop
  • 5h 27m total
  • Ottawa to Missouri
Search Deals
Highest demand for flights based on searches. 19% potential increase in price (C$ 275 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (C$ 45 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 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 16 March 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 - STL

YOWSTL

Ottawa

Tue 14/4

6:25 a.m.-9:13 p.m.

1 stop15h 48m

Lambert-St Louis

Mon 20/4

7:45 a.m.-5:07 p.m.

1 stop8h 22m

C$ 399

OttawaSt. Louis

YOW - STL

YOWSTL

Ottawa

Wed 15/4

5:25 p.m.-9:52 p.m.

1 stop5h 27m

Lambert-St Louis

Mon 20/4

7:45 a.m.-5:07 p.m.

1 stop8h 22m

C$ 399

OttawaSt. Louis

YOW - STL

YOWSTL

Ottawa

Fri 17/4

5:50 p.m.-11:57 p.m.

1 stop7h 07m

Lambert-St Louis

Sat 18/4

8:21 a.m.-6:55 p.m.

2 stops9h 34m

C$ 405

OttawaSt. Louis

YOW - STL

YOWSTL

Ottawa

Fri 22/5

5:20 p.m.-9:16 p.m.

1 stop4h 56m

Lambert-St Louis

Sun 24/5

1:13 p.m.-9:35 p.m.

1 stop7h 22m

C$ 423

OttawaSt. Louis

YOW - STL

YOWSTL

Ottawa

Sat 11/4

6:00 a.m.-2:24 p.m.

2 stops9h 24m

Lambert-St Louis

Sat 18/4

9:16 a.m.-6:55 p.m.

2 stops8h 39m

C$ 424

OttawaSt. Louis

YOW - STL

YOWSTL

Ottawa

Wed 3/6

10:44 a.m.-3:46 p.m.

1 stop6h 02m

Lambert-St Louis

Sat 6/6

6:00 a.m.-6:48 p.m.

2 stops11h 48m

C$ 472

OttawaSt. Louis

YOW - STL

YOWSTL

Ottawa

Mon 27/4

10:44 a.m.-9:13 p.m.

1 stop11h 29m

Lambert-St Louis

Mon 4/5

7:45 a.m.-1:59 p.m.

1 stop5h 14m

C$ 472

OttawaKansas City

YOW - MCI

YOWMCI

Ottawa

Thu 16/4

6:25 a.m.-2:25 p.m.

1 stop9h 00m

Kansas City

Sat 18/4

11:30 a.m.-5:07 p.m.

1 stop4h 37m

C$ 472

OttawaKansas City

YOW - MCI

YOWMCI

Ottawa

Fri 5/6

7:30 p.m.-10:29 a.m.

2 stops15h 59m

Kansas City

Wed 10/6

6:00 a.m.-9:35 p.m.

1 stop14h 35m

C$ 472

OttawaKansas City

YOW - MCI

YOWMCI

Ottawa

Wed 29/4

10:44 a.m.-4:03 p.m.

1 stop6h 19m

Kansas City

Sat 2/5

5:40 p.m.-10:03 a.m.

1 stop15h 23m

C$ 472

Flights are sorted by cheapest round-trip flights first.

Deals found on 13/3

Showing 1-10 of 26 resultsSorted by cheapest first
1
2
3

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, October is the cheapest month in which you can book a flight from Ottawa to Missouri (average of C$ 329). Flying from Ottawa to Missouri in March is currently the most expensive (average of C$ 539). 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.

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 16 March 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
9,428 reviews
Check prices

Entertainment

7.1

Overall

7.4

Crew

8.1

Boarding

7.7

Food

6.6

Comfort

7.3

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
9,428 reviews
United Airlines
7.4
Good
9,428 reviews
Check prices

Entertainment

7.1

Overall

7.4

Crew

8.1

Boarding

7.7

Food

6.6

Comfort

7.3

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
10,805 reviews
United Airlines
7.4
Good
9,428 reviews
Check prices

Entertainment

7.1

Overall

7.4

Crew

8.1

Boarding

7.7

Food

6.6

Comfort

7.3

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 48m. 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, October is the cheapest month in which you can book a flight from Ottawa to Missouri (average of C$ 329). Flying from Ottawa to Missouri in March is currently the most expensive (average of C$ 539). 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 16 March 2026.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 403AverageC$ 865FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
United AirlinesCheapestC$ 412AverageC$ 806FlexibilityNo cancel feeOn-time69%
Search United Airlines 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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