FFL Helper
Minneapolis MSP
$172
STL → MSP · Frontier Airlines
FFL Helper / St Louis / Minneapolis / September 2026
STL → MSP · 2026-09
St Louis to Minneapolis in September 2026
Dated one-way fares from St Louis to Minneapolis in September 2026. Use the calendar to see which days are cheaper.
Lowest this month
$172
Highest this month
$172
Sample fare
$172
Airports
STL–MSP
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Other months: August 2026 · September 2026 · Full route
September 2026 price calendar
September 2026
From $172
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$172
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Dated fares
Booking STL to MSP in September 2026
This page is only September 2026 on the St Louis to Minneapolis route. Open the full route if you want the next months side by side.
Prices move as seats sell. Confirm the live itinerary before you book St Louis to Minneapolis in September 2026.