Cheap flights from Washington to Duck Key from CA $67

View CA $67 flight on Thu, Aug. 28, 2025Opens in a new window

Popular airlines from Washington to Duck Key

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Cheap flights from Washington (WAS) to Duck Key (MIA)

Prices were available within the past 7 days and start at CA $67 for one-way flights and CA $134 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Spirit Airlines
Thu, Aug. 28 - Mon, Sep. 8
BWI
Baltimore
MIA
Miami
CA $134 Roundtrip, found 1 day ago
CA $134
Roundtrip
found 1 day ago
Select Spirit Airlines flight, departing Thu, Aug. 28 from Baltimore to Miami, returning Mon, Sep. 8, priced at CA $134 found 1 day ago
Spirit Airlines
Thu, Aug. 21 - Sat, Aug. 30
BWI
Baltimore
MIA
Miami
CA $135 Roundtrip, found 2 days ago
CA $135
Roundtrip
found 2 days ago
Select Spirit Airlines flight, departing Thu, Aug. 21 from Baltimore to Miami, returning Sat, Aug. 30, priced at CA $135 found 2 days ago
American Airlines
Mon, Aug. 18 - Thu, Aug. 21
BWI
Baltimore
MIA
Miami
CA $147 Roundtrip, found 9 hours ago
CA $147
Roundtrip
found 9 hours ago
Select American Airlines flight, departing Mon, Aug. 18 from Baltimore to Miami, returning Thu, Aug. 21, priced at CA $147 found 9 hours ago
Delta
Sat, Nov. 15 - Thu, Nov. 20
DCA
Washington
MIA
Miami
CA $162 Roundtrip, found 19 hours ago
CA $162
Roundtrip
found 19 hours ago
Select Delta flight, departing Sat, Nov. 15 from Washington to Miami, returning Thu, Nov. 20, priced at CA $162 found 19 hours ago
United
Tue, Nov. 4 - Wed, Nov. 19
IAD
Washington
MIA
Miami
CA $298 Roundtrip, found 3 days ago
CA $298
Roundtrip
found 3 days ago
Select United flight, departing Tue, Nov. 4 from Washington to Miami, returning Wed, Nov. 19, priced at CA $298 found 3 days ago
Alaska Airlines
Wed, Aug. 20 - Mon, Nov. 3
DCA
Washington
MIA
Miami
CA $14,530 Roundtrip, found 2 days ago
CA $14,530
Roundtrip
found 2 days ago
Select Alaska Airlines flight, departing Wed, Aug. 20 from Washington to Miami, returning Mon, Nov. 3, priced at CA $14,530 found 2 days ago

Find the cheapest month to fly from Washington (WAS) to Miami (MIA)

March is typically the cheapest month to fly

From CA $78 - CA $551 per traveller.

Graph displaying average flight prices per month

*Available to Expedia members.