$269+ Cheap flights from St. Louis to Sault Ste. Marie (STL - CIU)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/15. Fares are subject to change and may not be available on all flights or dates of travel.
STL — CIU
Nov 27 — Dec 41
1 adult, Economy
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Find cheap flights from St. Louis to Sault Ste. Marie 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 St. Louis to Sault Ste. Marie
Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Sault Ste. Marie (CIU). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated October 28, 2025.
Most accurate provider | eDreams 3 stars |
|---|---|
Most trusted provider | eDreams 3 stars |
Round-trip from | $269 (Delta) |
Find flight deals from St. Louis to Sault Ste. Marie
Best flights from St. Louis to Sault Ste. MarieDiscover carefully curated flight deals from St. Louis to Sault Ste. Marie that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 28, 2025.
Discover carefully curated flight deals from St. Louis to Sault Ste. Marie that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 28, 2025.
This Delta deal was found by Cheapflights users on 10/25. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/152:18 pmSTL - CIU
1 stop3h 54mDelta
Sat 4/187:01 amCIU - STL
1 stop5h 29mDelta
Deal found 10/25![Delta logo]()
$269
Cheapflights Fare Finder
Customize your flight search to find flights from St. Louis to Sault Ste. Marie 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 October 28, 2025.
Use the filters below to find and compare flights from St. Louis to Sault Ste. Marie that are best for you.
Fly from
St. Louis
Fly to
Sault Ste. Marie
Route
Depart
Return
Price
St. LouisSault Ste. Marie
STL - CIU
STLCIU
Lambert-St Louis
Wed 4/15
2:18 pm-7:12 pm
1 stop3h 54m
Sault Ste. Marie Chippewa County
Sat 4/18
7:01 am-11:30 am
1 stop5h 29m
$269
Compare providers for flights from St. Louis to Sault Ste. Marie
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from St. Louis to Sault Ste. Marie in October.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*1 star |
- Most accurate provider: When it comes to deals on St. Louis-Sault Ste. Marie flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on St. Louis-Sault Ste. Marie flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from St. Louis-Sault Ste. Marie flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on St. Louis-Sault Ste. Marie flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for St. Louis-Sault Ste. Marie flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from St. Louis to Sault Ste. Marie
Have a flexible travel schedule? Discover the best time to fly to Sault Ste. Marie from St. Louis 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.