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DTW
Detroit
STL
Saint Louis
Detroit → Saint Louis
Frontier Airlines · Round Trip · Nonstop
$383
per person · round trip
Ending Soon
Flight Details
Cabin
Economy
Departs
Apr 2, 2026
Returns
Apr 5, 2026
Price History
Avg: $358
Low: $333
High: $383
Mar 28Mar 28
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