Cheap Flights from St. Louis (STL) to Sarnia (YZR)

Popular airlines from St. Louis Lambert Intl. Airport (STL) to Sarnia, ON (YZR-Chris Hadfield)

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Frequently asked questions

How much does a flight from Lambert-St. Louis Intl. Airport (STL) to Chris Hadfield Airport (YZR) cost?
Lock in a cheap one-way flight or cheap return flight from Lambert-St. Louis Intl. Airport (STL) to Chris Hadfield Airport (YZR) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from Lambert-St. Louis Intl. Airport (STL) to Chris Hadfield Airport (YZR)?
is the least expensive month to fly from STL to YZR. Planning your trip for the off-season is often the key to finding better fares.
What is the cheapest airline that flies from Lambert-St. Louis Intl. Airport (STL) to Chris Hadfield Airport (YZR)?
Expedia's filter tool lets you easily compare airlines, flight times and baggage options all in one place. Customize the search to your preferences, then sort by "Price (lowest to highest)" to find the carrier with the cheapest STL to YZR flight.
How many flights per day from Lambert-St. Louis Intl. Airport (STL) to Chris Hadfield Airport (YZR)?
Nonstop flights from Lambert-St. Louis Intl. Airport (STL) to Chris Hadfield Airport (YZR) aren't available daily, so you'll need to take a flight with a layover. Explore your options with our filter tool. Enter your travel dates and pick either "1 Stop" or "2+ Stops."
What day of the week has the most flights from STL to YZR?
Friday is typically the busiest day for flights, while Tuesday tends to be the quietest.* Just remember that flight schedules can vary depending on a number of 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 Lambert-St. Louis Intl. Airport (STL) to Chris Hadfield Airport (YZR)?
Choose a flight from Lambert-St. Louis Intl. Airport (STL) to Chris Hadfield Airport (YZR) that leaves before 3 PM to reduce the risk of cancellations and delays. Later departures are on average 22% more likely to be canceled.**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 Lambert-St. Louis Intl. Airport (STL) to Chris Hadfield Airport (YZR) last-minute?
Booking your plane ticket from STL to YZR shortly before your journey is usually more expensive. However, if you're flexible with your travel times and dates, you could grab a cheap last-minute fare.
Is it cheaper to book a STL to YZR flight and hotel package?
Booking a STL to YZR flight and hotel package is typically cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your travels all in one place. Select from our wide range of stays and then add activities, flights and car rentals to your booking. Bundle it all together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Lambert-St. Louis Intl. Airport (STL) to Chris Hadfield Airport (YZR)?
You can usually cancel or reschedule your STL to YZR flight. However, if the booking was made more than 24 hours ago, additional fees may apply. Refer to your airline's policies in your itinerary to see what changes are possible and whether any costs are involved. You'll also find more information on our Customer Service portal.

Travel information

Origin airport
Lambert-St. Louis Intl.
Destination airport
Chris Hadfield
Distance
513 mi

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St. Louis to Sarnia Flights

The cheapest times to fly from St. Louis to Sarnia

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 St. Louis to Sarnia are during the month of . You can find some of the cheapest flights from St. Louis to Sarnia with Expedia's search tool and vast selection of airlines.

 

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

Sunday is one of the best days to book for cheap flights from St. Louis to Sarnia: 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 St. Louis to Sarnia

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 St. Louis to Sarnia 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 St. Louis to Sarnia 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 St. Louis to Sarnia 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.

 

St. Louis to Sarnia Flights

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*Available to One Key members.