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

Popular airlines from St. Louis Lambert Intl. Airport (STL) to Sault Ste. Marie, MI (SSM-Sault Ste. Marie Municipal)

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Frequently asked questions

How much does a flight from Lambert-St. Louis Intl. Airport (STL) to Sault Ste. Marie Municipal Airport (SSM) cost?
Grab a cheap one-way flight or cheap return flight from Lambert-St. Louis Intl. Airport (STL) to Sault Ste. Marie Municipal Airport (SSM) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see 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 Municipal Airport (SSM)?
is the most affordable month to fly from STL to SSM. 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 Lambert-St. Louis Intl. Airport (STL) to Sault Ste. Marie Municipal Airport (SSM)?
Use the filters on Expedia to compare airlines and find the most affordable carrier that'll fly you from STL to SSM. Then, sort your results by "Price (lowest to highest)" to pick up the best deal available.
How many flights per day from Lambert-St. Louis Intl. Airport (STL) to Sault Ste. Marie Municipal Airport (SSM)?
There aren't any daily nonstop flights departing from Lambert-St. Louis Intl. Airport (STL) to Sault Ste. Marie Municipal Airport (SSM). But you can opt for flights with layovers. Filter your search on Expedia to include one or two stops, and you'll be soaring above the clouds before you know it.
What day of the week has the most flights from STL to SSM?
Friday is typically the busiest day for flights, while Tuesday is often the quietest.* Keep in mind that flight schedules can vary based on a range of factors, such as the time of year and carrier.*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 Municipal Airport (SSM)?
To avoid possible delays on the Lambert-St. Louis Intl. Airport (STL) to Sault Ste. Marie Municipal Airport (SSM) route, aim to fly before 3 PM. Departures after this hour are 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 Sault Ste. Marie Municipal Airport (SSM) last-minute?
Last-minute fares from STL to SSM are generally more expensive. To lock in the best prices, start looking for flights well ahead of time. That said, if your travel plans are flexible, it's possible to find a cheap fare right before your journey.
Is it cheaper to book a STL to SSM flight and hotel package?
Compared with arranging hotels and flights separately, booking a STL to SSM flight and hotel package with Expedia could lead to significant savings. Better yet, managing everything in one place takes the hassle out of planning your trip. Simply pick your flights and choose from our wide range of hotels, then customize your trip with other add-ons like tours, activities and car rentals.
Can I cancel or change the date of my flight from Lambert-St. Louis Intl. Airport (STL) to Sault Ste. Marie Municipal Airport (SSM)?
If you booked your STL to SSM flight in the last 24 hours, you may be able to cancel or modify it without any fees. Depending on the airline and the type of fare you purchased, additional charges may apply for changes beyond that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal for further details.

Travel information

Travel information

Origin airport
Lambert-St. Louis Intl.
Destination airport
Sault Ste. Marie Municipal
Distance
615 mi

Book with confidence

Book with confidence

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.

 

St. Louis to Sault Ste. Marie Flights

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*Available to One Key members.