Cheap Flights from St. Louis (STL) to Sault Ste. Marie (YAM)

Popular airlines from St. Louis Lambert Intl. Airport (STL) to Sault Ste. Marie, ON (YAM-Sault Ste. Marie Airport)

Alternative airports near Sault Ste. Marie

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Chippewa County Intl. CIU. Cheapest option available. Average driving time to city center is 23 minutes. Flights from $274
CIU
Chippewa County Intl.
Cheapest
Average driving time to city center23 min
Flights from $274
Flights from St. Louis (STL) to Sault Ste. Marie (YAM)
Origin airport
Lambert-St. Louis Intl.
Destination airport
Sault Ste. Marie Airport
Distance
612 mi

St. Louis to Sault Ste. Marie Flights

The cheapest times to fly from St. Louis to Sault Ste. Marie

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

 

The best time to book a flight from St. Louis to Sault Ste. Marie

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

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 Sault Ste. Marie 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 Sault Ste. Marie 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 Sault Ste. Marie 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.

 

Frequently asked questions

How much does a flight from Lambert-St. Louis Intl. Airport (STL) to Sault Ste. Marie Airport Airport (YAM) cost?
Snag a cheap one-way flight or cheap return flight from Lambert-St. Louis Intl. Airport (STL) to Sault Ste. Marie Airport Airport (YAM) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from Lambert-St. Louis Intl. Airport (STL) to Sault Ste. Marie Airport Airport (YAM)?
Planning your getaway for may help you find better deals, as it's the cheapest month for flights between STL and YAM. You'll usually find the lowest fares during the off-season.
What is the cheapest airline that flies from Lambert-St. Louis Intl. Airport (STL) to Sault Ste. Marie Airport Airport (YAM)?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll take you from STL to YAM. Then, sort your results by "Price (lowest to highest)" to snag a good deal.
How many flights per day from Lambert-St. Louis Intl. Airport (STL) to Sault Ste. Marie Airport Airport (YAM)?
There are no daily nonstop flights available from Lambert-St. Louis Intl. Airport (STL) to Sault Ste. Marie Airport Airport (YAM). But you can book flights with layovers. Filter your search results on Expedia to include one or more stops, and you'll be on your way in no time at all.
What day of the week has the most flights from STL to YAM?
You'll generally find Tuesday the quietest day for flights, while Fridays are often the busiest.* However this can change from season to season and during peak travel times or public holidays.*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 Sault Ste. Marie Airport Airport (YAM)?
Choose a flight from Lambert-St. Louis Intl. Airport (STL) to Sault Ste. Marie Airport Airport (YAM) that takes off before 3 PM to reduce the likelihood of delays. Departures after this hour have a 22% higher chance of being canceled, on average.**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 Sault Ste. Marie Airport Airport (YAM) last-minute?
Booking your flight from STL to YAM shortly before your getaway is typically more expensive. But if you're flexible with your travel times and dates, you could snag a cheap last-minute fare.
Is it cheaper to book a STL to YAM flight and hotel package?
Securing a STL to YAM flight and hotel package is typically cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your trip in one place. Choose from our wide range of hotels and then add car rentals, activities and flights 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 Sault Ste. Marie Airport Airport (YAM)?
If you booked your STL to YAM flight in the last 24 hours, you may be able to cancel or modify it at no cost. Depending on the airline and the ticket type you purchased, additional charges may apply for changes after that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, visit our Customer Service portal for more information.

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*Available to One Key members.