HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Ottawa

$165+ 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 4/12. Fares are subject to change and may not be available on all flights or dates of travel.
STL — YOW
Apr 10 — Apr 171
Fri 4/10
Fri 4/17
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Missouri to Ottawa with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 March 11, 2026.

This Booking.com deal was found by Cheapflights users on 3/10. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/41:00 pm
STL
-
YOW
1 stop6h 51m
Air Canada
Sun 5/107:00 am
YOW
-
STL
1 stop6h 06m
Air Canada
Deal found 3/10$345
This Air Canada deal was found by Cheapflights users on 3/6. 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 5/131:00 pm
STL
-
YOW
1 stop6h 51m
Air Canada
Mon 5/183:00 pm
YOW
-
STL
1 stop6h 25m
Air Canada
Deal found 3/6$384
This United Airlines deal was found by Cheapflights users on 3/6. 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.
Mon 4/206:15 am
MCI
-
YOW
1 stop9h 52m
United Airlines
Mon 4/2710:44 am
YOW
-
MCI
1 stop12h 15m
United Airlines
Deal found 3/6$392
This United Airlines deal was found by Cheapflights users on 3/8. 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 4/159:10 am
STL
-
YOW
1 stop6h 57m
United Airlines
Sun 4/196:25 am
YOW
-
STL
1 stop5h 20m
United Airlines
Deal found 3/8$392
This United Airlines deal was found by Cheapflights users on 3/10. 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 4/99:10 am
STL
-
YOW
1 stop6h 57m
United Airlines
Thu 4/166:25 am
YOW
-
STL
1 stop5h 20m
United Airlines
Deal found 3/10$403
This United Airlines deal was found by Cheapflights users on 3/6. 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 3/248:17 am
STL
-
YOW
2 stops7h 13m
United Airlines
Wed 3/256:00 am
YOW
-
STL
2 stops9h 42m
United Airlines
Deal found 3/6$407
This United Airlines deal was found by Cheapflights users on 3/10. 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.
Fri 4/246:00 am
MCI
-
YOW
2 stops15h 05m
United Airlines
Fri 5/15:25 pm
YOW
-
MCI
1 stop7h 06m
United Airlines
Deal found 3/10$413
This United Airlines deal was found by Cheapflights users on 3/10. 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.
Fri 4/311:15 am
STL
-
YOW
1 stop4h 52m
United Airlines
Tue 4/76:00 am
YOW
-
STL
1 stop5h 28m
United Airlines
Deal found 3/10$414
This United Airlines deal was found by Cheapflights users on 3/9. 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 4/237:45 am
STL
-
YOW
2 stops7h 53m
United Airlines
Thu 4/306:00 am
YOW
-
STL
2 stops16h 13m
United Airlines
Deal found 3/9$418
This United Airlines deal was found by Cheapflights users on 3/9. 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 8/16:36 pm
MCI
-
YOW
2 stops14h 27m
United Airlines
Tue 8/45:50 pm
YOW
-
MCI
1 stop7h 09m
United Airlines
Deal found 3/9$464
This United Airlines deal was found by Cheapflights users on 3/9. 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 4/236:15 am
MCI
-
YOW
2 stops9h 51m
United Airlines
Thu 4/305:25 pm
YOW
-
MCI
1 stop16h 16m
United Airlines
Deal found 3/9$505
This United Airlines deal was found by Cheapflights users on 3/6. 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.
Sun 5/106:17 am
MCI
-
YOW
1 stop6h 42m
United Airlines
Fri 5/1510:44 am
YOW
-
MCI
1 stop13h 47m
United Airlines
Deal found 3/6$514

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 March 11, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$345
(Booking.com)

One-way from

$165
(United Airlines)

Popular in

August

Cheapest in

March

Average price

$350
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. 10% potential increase in price ($76 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($25 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 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 March 11, 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

Thu 5/14

1:00 pm-8:51 pm

1 stop6h 51m

Ottawa

Sun 5/17

3:00 pm-8:25 pm

1 stop6h 25m

$384

Kansas CityOttawa

MCI - YOW

MCIYOW

Kansas City

Mon 4/20

6:15 am-5:07 pm

1 stop9h 52m

Ottawa

Mon 4/27

10:44 am-9:59 pm

1 stop12h 15m

$392
Quickest round-trip

St. LouisOttawa

STL - YOW

STLYOW

Lambert-St Louis

Mon 4/20

9:10 am-5:07 pm

1 stop6h 57m

Ottawa

Wed 4/22

5:25 pm-9:13 pm

1 stop4h 48m

$392

St. LouisOttawa

STL - YOW

STLYOW

Lambert-St Louis

Tue 4/7

11:15 am-10:05 pm

2 stops9h 50m

Ottawa

Tue 4/14

5:25 pm-9:52 pm

1 stop5h 27m

$402

St. LouisOttawa

STL - YOW

STLYOW

Lambert-St Louis

Wed 4/15

9:10 am-5:07 pm

1 stop6h 57m

Ottawa

Sun 4/19

5:25 pm-9:52 pm

1 stop5h 27m

$402

St. LouisOttawa

STL - YOW

STLYOW

Lambert-St Louis

Tue 3/24

7:40 am-4:30 pm

2 stops7h 50m

Ottawa

Wed 3/25

5:11 pm-9:42 pm

1 stop5h 31m

$402

St. LouisOttawa

STL - YOW

STLYOW

Lambert-St Louis

Mon 5/4

7:09 pm-9:11 am

2 stops13h 02m

Ottawa

Sun 5/10

7:00 am-12:06 pm

1 stop6h 06m

$413

Kansas CityOttawa

MCI - YOW

MCIYOW

Kansas City

Fri 4/24

7:00 pm-10:00 am

2 stops14h 00m

Ottawa

Fri 5/1

2:40 pm-11:51 pm

2 stops10h 11m

$418

Kansas CityOttawa

MCI - YOW

MCIYOW

Kansas City

Sat 8/1

6:36 pm-10:03 am

2 stops14h 27m

Ottawa

Tue 8/4

6:25 am-4:00 pm

1 stop10h 35m

$464

Kansas CityOttawa

MCI - YOW

MCIYOW

Kansas City

Sun 5/10

6:17 am-1:59 pm

1 stop6h 42m

Ottawa

Fri 5/15

10:44 am-11:31 pm

1 stop13h 47m

$514

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/6

Showing 1-10 of 19 resultsSorted by cheapest first
1
2

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 $162). Flying from Missouri to Ottawa in April is currently the most expensive (average of $499). 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.

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 $384, Air Canada can have you in Ottawa from Missouri in 6h 51m. 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 $162). Flying from Missouri to Ottawa in April is currently the most expensive (average of $499). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Missouri to Ottawa

See prices for flight routes from nearby airports that may be better suited for you.
Newark to Pearson Intl flights
John F Kennedy Intl to Pierre Elliott Trudeau Intl flights
Newark to Toronto Island flights
LaGuardia to Pearson Intl flights
John F Kennedy Intl to Pearson Intl flights
LaGuardia to Pierre Elliott Trudeau Intl flights
Los Angeles to Pearson Intl flights
San Francisco to Pearson Intl flights
O'Hare Intl to Pearson Intl flights
Dallas/Fort Worth to Pearson Intl flights
Reagan-National to Pearson Intl flights
Reagan-National to Pierre Elliott Trudeau Intl flights
Boston to Pearson Intl flights
Dulles Intl to Pearson Intl flights
O'Hare Intl to Pierre Elliott Trudeau Intl flights
Boston to Pierre Elliott Trudeau Intl flights
Seattle to Pearson Intl flights
Los Angeles to Pierre Elliott Trudeau Intl flights
Boston to Toronto Island flights
Dallas/Fort Worth to Pierre Elliott Trudeau Intl flights
Dulles Intl to Toronto Island flights
Minneapolis to Pierre Elliott Trudeau Intl flights
Atlanta to Pearson Intl flights
Orlando to Pearson Intl flights
Philadelphia to Pierre Elliott Trudeau Intl flights
Philadelphia to Pearson Intl flights
George Bush Intcntl to Pearson Intl flights
Atlanta to Pierre Elliott Trudeau Intl flights
Minneapolis to Pearson Intl flights
Seattle to Pierre Elliott Trudeau Intl flights
Baltimore to Pearson Intl flights
Fort Lauderdale to Pierre Elliott Trudeau Intl flights
Sky Harbor Intl to Pearson Intl flights
Miami to Pierre Elliott Trudeau Intl flights
Denver to Pearson Intl flights
White Plains to Pearson Intl flights
Charlotte to Pearson Intl flights
San Francisco to Toronto Island flights
O'Hare Intl to Toronto Island flights
Fort Lauderdale to Pearson Intl flights
Midway to Toronto Island flights
Detroit to Pierre Elliott Trudeau Intl flights

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 March 11, 2026.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$139Average$879FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$362Average$819FlexibilityNo cancel feeOn-time69%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.