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Ottawa

$160+ Cheap flights from Missouri to Ottawa (YOW)

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 6/30. Fares are subject to change and may not be available on all flights or dates of travel.
STL — YOW
May 30 — Jun 61
Sat 5/30
Sat 6/6
1 adult, Economy
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Cheap flight deals from Missouri to Ottawa

Cheapest flights from Missouri to Ottawa
Explore the most affordable flight options available from Missouri to Ottawa. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 30, 2026.

This Air Canada deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/22:15 pm
STL
-
YOW
1 stop6h 01m
Air Canada
Thu 6/43:00 pm
YOW
-
STL
1 stop6h 25m
Air Canada
Deal found 4/27$378
This United Airlines deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/116:00 am
STL
-
YOW
1 stop9h 38m
United Airlines
Fri 6/196:25 am
YOW
-
STL
1 stop10h 21m
United Airlines
Deal found 4/29$381
This Air Canada deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/121:05 pm
STL
-
YOW
1 stop5h 36m
Air Canada
Sat 5/163:00 pm
YOW
-
STL
1 stop6h 25m
Air Canada
Deal found 4/29$384
This United Airlines deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/106:00 am
STL
-
YOW
2 stops11h 48m
United Airlines
Wed 6/176:25 am
YOW
-
STL
1 stop10h 21m
United Airlines
Deal found 4/28$391
This United Airlines deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/81:13 pm
STL
-
YOW
1 stop7h 22m
United Airlines
Sat 8/156:00 pm
YOW
-
STL
1 stop6h 37m
United Airlines
Deal found 4/29$392
This United Airlines deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/135:41 pm
STL
-
YOW
2 stops15h 22m
United Airlines
Sat 6/205:50 pm
YOW
-
STL
1 stop6h 45m
United Airlines
Deal found 4/29$402
This Air Canada deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/137:45 am
STL
-
YOW
1 stop8h 22m
Air Canada
Sun 5/172:40 pm
YOW
-
STL
1 stop6h 45m
Air Canada
Deal found 4/25$449
This United Airlines deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/21:03 pm
MCI
-
YOW
1 stop7h 32m
United Airlines
Sat 6/66:25 am
YOW
-
MCI
1 stop8h 55m
United Airlines
Deal found 4/26$540
This United Airlines deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/311:25 am
MCI
-
YOW
2 stops11h 29m
United Airlines
Sat 6/65:20 pm
YOW
-
MCI
1 stop6h 47m
United Airlines
Deal found 4/27$545
This United Airlines deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/265:00 pm
MCI
-
YOW
2 stops15h 11m
United Airlines
Wed 6/36:25 am
YOW
-
MCI
1 stop5h 04m
United Airlines
Deal found 4/27$550
This United Airlines deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/46:00 am
MCI
-
YOW
1 stop9h 38m
United Airlines
Sun 6/76:25 am
YOW
-
MCI
1 stop5h 04m
United Airlines
Deal found 4/25$609
This United Airlines deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/85:45 pm
MCI
-
YOW
1 stop5h 09m
United Airlines
Wed 8/126:00 am
YOW
-
MCI
3 stops10h 52m
United Airlines
Deal found 4/26$619

Find flight deals from Missouri to Ottawa

Keep the following information in mind while searching for Missouri to Ottawa flight deals. Data was last updated April 30, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$378
(Air Canada)

One-way from

$160
(United Airlines)

Popular in

August

Cheapest in

March

Average price

$590
Provider with most accurate pricing for Lambert-St Louis-Ottawa flight deals.
Search Deals
Provider most trusted by Cheapflights users for Lambert-St Louis-Ottawa flights.
Search Deals
From Missouri to Ottawa
Search Deals
One-way flight from Missouri to Ottawa
Search Deals
Highest demand for flights based on searches. 18% potential increase in price ($137 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($31 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Missouri to Ottawa 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 2,558,603 searches. Data last updated April 30, 2026.
Use the filters below to find and compare flights from Missouri to Ottawa that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisOttawa

STL - YOW

STLYOW

Lambert-St Louis

Wed 6/10

8:40 am-3:11 pm

1 stop5h 31m

Ottawa

Wed 6/17

2:40 pm-8:25 pm

1 stop6h 45m

$378

St. LouisOttawa

STL - YOW

STLYOW

Lambert-St Louis

Tue 6/2

2:15 pm-9:16 pm

1 stop6h 01m

Ottawa

Thu 6/4

2:40 pm-8:25 pm

1 stop6h 45m

$378

St. LouisOttawa

STL - YOW

STLYOW

Lambert-St Louis

Tue 6/9

6:00 am-5:07 pm

1 stop10h 07m

Ottawa

Tue 6/16

3:10 pm-11:36 pm

1 stop9h 26m

$381

St. LouisOttawa

STL - YOW

STLYOW

Lambert-St Louis

Tue 6/2

6:00 am-4:38 pm

1 stop9h 38m

Ottawa

Thu 6/4

6:25 am-12:11 pm

1 stop6h 46m

$381
Quickest round-trip

St. LouisOttawa

STL - YOW

STLYOW

Lambert-St Louis

Tue 5/12

1:05 pm-7:41 pm

1 stop5h 36m

Ottawa

Sat 5/16

3:00 pm-8:25 pm

1 stop6h 25m

$384

St. LouisOttawa

STL - YOW

STLYOW

Lambert-St Louis

Wed 6/10

6:00 am-6:48 pm

2 stops11h 48m

Ottawa

Wed 6/17

6:25 am-3:46 pm

1 stop10h 21m

$391

St. LouisOttawa

STL - YOW

STLYOW

Lambert-St Louis

Sat 8/8

1:13 pm-9:35 pm

1 stop7h 22m

Ottawa

Sat 8/15

6:00 pm-11:37 pm

1 stop6h 37m

$392

St. LouisOttawa

STL - YOW

STLYOW

Lambert-St Louis

Thu 6/11

6:00 am-10:05 pm

1 stop15h 05m

Ottawa

Fri 6/19

5:10 am-12:11 pm

2 stops8h 01m

$470

St. LouisOttawa

STL - YOW

STLYOW

Lambert-St Louis

Fri 8/28

6:00 am-5:10 pm

2 stops10h 10m

Ottawa

Sun 8/30

6:00 am-3:38 pm

2 stops10h 38m

$480

Kansas CityOttawa

MCI - YOW

MCIYOW

Kansas City

Tue 6/2

6:00 am-9:35 pm

1 stop14h 35m

Ottawa

Sat 6/6

5:50 pm-11:38 pm

1 stop6h 48m

$540

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/25

Showing 1-10 of 23 resultsSorted by cheapest first
1
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3

Best time to book a flight from Missouri to Ottawa

Have a flexible travel schedule? Discover the best time to fly to Ottawa from Missouri 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 Missouri to Ottawa

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

Currently, August is the cheapest month in which you can book a flight from Missouri to Ottawa (average of $98). Flying from Missouri to Ottawa in December is currently the most expensive (average of $473). 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 Missouri to Ottawa?

Related info for your journey

Find useful and relevant information for your journey from Missouri to Ottawa. 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 into for flights to Ottawa from Missouri?

    For a flight from Missouri to Ottawa, you will be flying into Ottawa. Ottawa (YOW) is just 6.6 mi from the center of the city.

  • How long is the flight from Missouri to Ottawa?

    For as low as $378, Air Canada can have you in Ottawa from Missouri in 5h 31m. The distance from Missouri to Ottawa is about 878 mi. This flight may include one or multiple stops.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Missouri to Ottawa 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 Missouri to Ottawa?

    Currently, August is the cheapest month in which you can book a flight from Missouri to Ottawa (average of $98). Flying from Missouri to Ottawa in December is currently the most expensive (average of $473). 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

Traveling to a place near Ottawa?

Book flights to Ottawa if you plan to visit one of these locations
Gatineau
Petawawa

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Alternative routes for Missouri to Ottawa

See prices for flight routes from nearby airports that may be better suited for you.
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San Francisco to Toronto Island flights
Los Angeles to Toronto Island flights
Fort Lauderdale to Pierre Elliott Trudeau Intl flights
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Top 2 airlines flying from Missouri to Ottawa

Discover the top 2 airlines that operate flights from Missouri to Ottawa. 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 2,558,603 searches. Data last updated April 30, 2026.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$139Average$697FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$219Average$707FlexibilityNo cancel feeOn-time69%

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