Cheap Flights from Ottawa (YOW) to St. Louis (SUS)

Popular airlines from Ottawa International Airport (YOW) to St. Louis, MO (SUS-Spirit of St. Louis)

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Frequently asked questions

How much does a flight from Macdonald-Cartier Intl. Airport (YOW) to Spirit of St. Louis Airport (SUS) cost?
Secure a cheap one-way flight or cheap return flight from Macdonald-Cartier Intl. Airport (YOW) to Spirit of St. Louis Airport (SUS) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from Macdonald-Cartier Intl. Airport (YOW) to Spirit of St. Louis Airport (SUS)?
is the most affordable month to fly from YOW to SUS. Timing your trip outside of the busy season is often the key to landing a great deal.
What is the cheapest airline that flies from Macdonald-Cartier Intl. Airport (YOW) to Spirit of St. Louis Airport (SUS)?
Use the filters on Expedia to compare different airlines and find the most affordable carrier that'll fly you from YOW to SUS. Then, sort your results by "Price (lowest to highest)" to score the best deal available.
How many flights per day from Macdonald-Cartier Intl. Airport (YOW) to Spirit of St. Louis Airport (SUS)?
You'll have to hop on a flight with a layover when traveling from Macdonald-Cartier Intl. Airport (YOW) to Spirit of St. Louis Airport (SUS). Direct flights don't operate daily on this route. However, just filter your search to include one or two stops to find the best option for your trip.
What day of the week has the most flights from YOW to SUS?
Friday is generally the busiest day for flights, while Tuesday tends to be the quietest.* Keep in mind that flight schedules can change depending on various factors, including the season and airline.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Macdonald-Cartier Intl. Airport (YOW) to Spirit of St. Louis Airport (SUS)?
To avoid possible delays on the Macdonald-Cartier Intl. Airport (YOW) to Spirit of St. Louis Airport (SUS) route, aim to travel before 3 PM. Later flights have a 22% higher chance of cancellation.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Macdonald-Cartier Intl. Airport (YOW) to Spirit of St. Louis Airport (SUS) last-minute?
Booking your plane ticket from YOW to SUS just before your trip is generally more expensive. However, if you're flexible with your travel times and dates, you could bag a cheap last-minute fare.
Is it cheaper to book a YOW to SUS flight and hotel package?
Securing a YOW to SUS flight and hotel package tends to be cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your travels in one place. Select from our extensive range of hotels and then add activities, flights and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Macdonald-Cartier Intl. Airport (YOW) to Spirit of St. Louis Airport (SUS)?
In most instances, you can cancel or modify your YOW to SUS flight. However, there may be additional fees, especially if your booking was made over 24 hours ago. Double-check your itinerary for the airline's fees and guidelines on flight changes, or if you want more details, head to our Customer Service portal.

Travel information

Origin airport
Macdonald-Cartier Intl.
Destination airport
Spirit of St. Louis
Distance
894 mi

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Ottawa to St. Louis Flights

The cheapest times to fly from Ottawa to St. Louis

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Ottawa to St. Louis are during the month of . You can find some of the cheapest flights from Ottawa to St. Louis with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Ottawa to St. Louis

Sunday is one of the best days to book for cheap flights from Ottawa to St. Louis: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Ottawa to St. Louis

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Ottawa to St. Louis in 2025. You can also book with separate airlines for your outbound and return journeys, from one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Ottawa to St. Louis flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Ottawa to St. Louis airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Ottawa to St. Louis Flights

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*Available to One Key members.