Flights to Grassy Key from Detroit - ￥11,580

View ￥11,580 flight on Thu, Aug 21, 2025Opens in a new window

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Cheap Flights from Detroit to Grassy Key (DTT-MIA)

Prices were available within the past 7 days and start at ￥11,580 for one-way flights and ￥20,160 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Sun, Aug 10 - Tue, Aug 19
DTW
Detroit
MIA
Miami
￥20,160 Roundtrip, found 1 day ago
￥20,160
Roundtrip
found 1 day ago
Select Delta flight, departing Sun, Aug 10 from Detroit to Miami, returning Tue, Aug 19, priced at ￥20,160 found 1 day ago
Delta
Sat, Aug 9 - Wed, Aug 13
DTW
Detroit
MIA
Miami
￥21,660 Roundtrip, found 1 day ago
￥21,660
Roundtrip
found 1 day ago
Select Delta flight, departing Sat, Aug 9 from Detroit to Miami, returning Wed, Aug 13, priced at ￥21,660 found 1 day ago
Delta
Tue, Aug 12 - Sat, Aug 16
DTW
Detroit
MIA
Miami
￥21,710 Roundtrip, found 17 hours ago
￥21,710
Roundtrip
found 17 hours ago
Select Delta flight, departing Tue, Aug 12 from Detroit to Miami, returning Sat, Aug 16, priced at ￥21,710 found 17 hours ago
American Airlines
Thu, Aug 21 - Thu, Aug 28
DTW
Detroit
MIA
Miami
￥23,040 Roundtrip, found 2 days ago
￥23,040
Roundtrip
found 2 days ago
Select American Airlines flight, departing Thu, Aug 21 from Detroit to Miami, returning Thu, Aug 28, priced at ￥23,040 found 2 days ago
Delta
Sat, Aug 9 - Sat, Aug 16
DTW
Detroit
MIA
Miami
￥23,080 Roundtrip, found 1 day ago
￥23,080
Roundtrip
found 1 day ago
Select Delta flight, departing Sat, Aug 9 from Detroit to Miami, returning Sat, Aug 16, priced at ￥23,080 found 1 day ago
Delta
Tue, Aug 12 - Sat, Aug 16
DTW
Detroit
MIA
Miami
￥23,130 Roundtrip, found 17 hours ago
￥23,130
Roundtrip
found 17 hours ago
Select Delta flight, departing Tue, Aug 12 from Detroit to Miami, returning Sat, Aug 16, priced at ￥23,130 found 17 hours ago

Find the cheapest month to fly from Detroit (DTT) to Miami (MIA)

August is typically the cheapest month to fly

From ￥11,127 - ￥29,399 per traveler.

Graph displaying average flight prices per month

*Available to Expedia members.