
Popular airlines from Washington to Grassy Key
- American Airlines
American Airlines
- Delta
Delta
- United
United
Cheap Flights from Washington (WAS) to Grassy Key (MIA)
Prices were available within the past 7 days for one-way flights and round trip tickets for the period specified. Prices and availability are subject to change. Additional terms apply.

Thu, 11 Sep. - Thu, 18 Sep.
BWI
Baltimore
MIA
Miami
AU$168 Return, found 8 hours ago
AU$168
Return
found 8 hours ago

Fri, 22 Aug. - Fri, 29 Aug.
BWI
Baltimore
MIA
Miami
AU$183 Return, found 1 day ago
AU$183
Return
found 1 day ago

Thu, 21 Aug. - Thu, 28 Aug.
BWI
Baltimore
MIA
Miami
AU$210 Return, found 2 days ago
AU$210
Return
found 2 days ago

Mon, 18 Aug. - Sat, 23 Aug.
DCA
Washington
MIA
Miami
AU$225 Return, found 12 hours ago
AU$225
Return
found 12 hours ago

Wed, 20 Aug. - Wed, 27 Aug.
DCA
Washington
MIA
Miami
AU$240 Return, found 3 days ago
AU$240
Return
found 3 days ago

Mon, 25 Aug. - Thu, 28 Aug.
IAD
Washington
MIA
Miami
AU$409 Return, just found
AU$409
Return
just found
Find the cheapest month to fly from Washington (WAS) to Miami (MIA)
September is typically the cheapest month to fly
From AU$79 - AU$259 per traveller.
Graph displaying average flight prices per month
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