Cheap Flights from Seattle to Duck Key

View €94 flight on Sat, 30 Aug 2025Opens in a new window

Popular airlines from Seattle to Duck Key

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Cheap flights from Seattle to Duck Key (SEA-MIA)

Prices were available within the past 7 days and start at €94 for one-way flights and €197 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Sat, 30 Aug - Fri, 5 Sep
SEA
Seattle
MIA
Miami
€197 Return, found 1 day ago
€197
Return
found 1 day ago
Select American Airlines flight, departing Sat, 30 Aug from Seattle to Miami, returning Fri, 5 Sep, priced at €197 found 1 day ago
Delta
Sat, 30 Aug - Fri, 5 Sep
SEA
Seattle
MIA
Miami
€223 Return, found 1 day ago
€223
Return
found 1 day ago
Select Delta flight, departing Sat, 30 Aug from Seattle to Miami, returning Fri, 5 Sep, priced at €223 found 1 day ago
Delta
Tue, 16 Sep - Thu, 18 Sep
SEA
Seattle
MIA
Miami
€241 Return, found 6 days ago
€241
Return
found 6 days ago
Select Delta flight, departing Tue, 16 Sep from Seattle to Miami, returning Thu, 18 Sep, priced at €241 found 6 days ago
American Airlines
Tue, 16 Sep - Thu, 18 Sep
SEA
Seattle
MIA
Miami
€242 Return, found 6 days ago
€242
Return
found 6 days ago
Select American Airlines flight, departing Tue, 16 Sep from Seattle to Miami, returning Thu, 18 Sep, priced at €242 found 6 days ago
United
Sat, 30 Aug - Fri, 5 Sep
SEA
Seattle
MIA
Miami
€300 Return, found 1 day ago
€300
Return
found 1 day ago
Select United flight, departing Sat, 30 Aug from Seattle to Miami, returning Fri, 5 Sep, priced at €300 found 1 day ago
JetBlue Airways
Sun, 24 Aug - Thu, 28 Aug
SEA
Seattle
MIA
Miami
€717 Return, found 2 days ago
€717
Return
found 2 days ago
Select JetBlue Airways flight, departing Sun, 24 Aug from Seattle to Miami, returning Thu, 28 Aug, priced at €717 found 2 days ago

Find the cheapest month to fly from Seattle (SEA) to Miami (MIA)

September is typically the cheapest month to fly

From €132 - €221 per traveller.

Graph displaying average flight prices per month

*Available to Expedia members.