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Grassy Key

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Grassy Key Flights as Low as $88

Prices found within past 7 days. Prices and availability subject to change. Additional terms may apply.

Spirit Airlines
Tue, May 27 - Thu, May 29
DFW
Dallas-Fort Worth Intl.
MIA
Miami Intl.
$88 Roundtrip, found 2 days ago
$88
Roundtrip
found 2 days ago
Select Spirit Airlines flight, departing Tue, May 27 from Dallas-Fort Worth Intl. to Miami Intl., returning Thu, May 29, priced at $88 found 2 days ago
Frontier Airlines
Sun, May 4 - Tue, May 13
ATL
Hartsfield-Jackson Atlanta Intl.
MIA
Miami Intl.
$90 Roundtrip, found 6 days ago
$90
Roundtrip
found 6 days ago
Select Frontier Airlines flight, departing Sun, May 4 from Hartsfield-Jackson Atlanta Intl. to Miami Intl., returning Tue, May 13, priced at $90 found 6 days ago
Frontier Airlines
Tue, May 27 - Thu, May 29
DFW
Dallas-Fort Worth Intl.
MIA
Miami Intl.
$93 Roundtrip, found 2 days ago
$93
Roundtrip
found 2 days ago
Select Frontier Airlines flight, departing Tue, May 27 from Dallas-Fort Worth Intl. to Miami Intl., returning Thu, May 29, priced at $93 found 2 days ago
Frontier Airlines
Sat, May 3 - Fri, May 16
ATL
Hartsfield-Jackson Atlanta Intl.
MIA
Miami Intl.
$94 Roundtrip, found 6 days ago
$94
Roundtrip
found 6 days ago
Select Frontier Airlines flight, departing Sat, May 3 from Hartsfield-Jackson Atlanta Intl. to Miami Intl., returning Fri, May 16, priced at $94 found 6 days ago
Frontier Airlines
Mon, May 26 - Thu, May 29
ATL
Hartsfield-Jackson Atlanta Intl.
MIA
Miami Intl.
$98 Roundtrip, found 1 day ago
$98
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Mon, May 26 from Hartsfield-Jackson Atlanta Intl. to Miami Intl., returning Thu, May 29, priced at $98 found 1 day ago
Frontier Airlines
Wed, May 21 - Sun, May 25
ATL
Hartsfield-Jackson Atlanta Intl.
MIA
Miami Intl.
$98 Roundtrip, found 6 days ago
$98
Roundtrip
found 6 days ago
Select Frontier Airlines flight, departing Wed, May 21 from Hartsfield-Jackson Atlanta Intl. to Miami Intl., returning Sun, May 25, priced at $98 found 6 days ago
American Airlines
Tue, Jun 3 - Tue, Jun 3
ATL
Hartsfield-Jackson Atlanta Intl.
MIA
Miami Intl.
$157 Roundtrip, found 2 days ago
$157
Roundtrip
found 2 days ago
Select American Airlines flight, departing Tue, Jun 3 from Hartsfield-Jackson Atlanta Intl. to Miami Intl., returning Tue, Jun 3, priced at $157 found 2 days ago
Delta
Wed, May 28 - Wed, May 28
ATL
Hartsfield-Jackson Atlanta Intl.
MIA
Miami Intl.
$157 Roundtrip, found 1 day ago
$157
Roundtrip
found 1 day ago
Select Delta flight, departing Wed, May 28 from Hartsfield-Jackson Atlanta Intl. to Miami Intl., returning Wed, May 28, priced at $157 found 1 day ago
Frontier Airlines
Mon, May 19 - Sat, May 24
IND
Indianapolis Intl.
MIA
Miami Intl.
$214 Roundtrip, found 1 day ago
$214
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Mon, May 19 from Indianapolis Intl. to Miami Intl., returning Sat, May 24, priced at $214 found 1 day ago
Delta
Mon, May 19 - Wed, May 28
DAL
Love Field
EYW
Key West Intl.
$217 Roundtrip, found 8 hours ago
$217
Roundtrip
found 8 hours ago
Select Delta flight, departing Mon, May 19 from Love Field to Key West Intl., returning Wed, May 28, priced at $217 found 8 hours ago
Delta
Sun, Aug 31 - Thu, Sep 4
DAL
Love Field
MIA
Miami Intl.
$239 Roundtrip, found 2 days ago
$239
Roundtrip
found 2 days ago
Select Delta flight, departing Sun, Aug 31 from Love Field to Miami Intl., returning Thu, Sep 4, priced at $239 found 2 days ago
Bargain Flight
Sat, May 3 - Tue, May 6
DFW
Dallas-Fort Worth Intl.
MIA
Miami Intl.
$242 Roundtrip, found 1 day ago
$242
Roundtrip
found 1 day ago
Select Bargain Flight flight, departing Sat, May 3 from Dallas-Fort Worth Intl. to Miami Intl., returning Tue, May 6, priced at $242 found 1 day ago
American Airlines
Tue, Jul 1 - Wed, Jul 9
IND
Indianapolis Intl.
EYW
Key West Intl.
$259 Roundtrip, found 9 hours ago
$259
Roundtrip
found 9 hours ago
Select American Airlines flight, departing Tue, Jul 1 from Indianapolis Intl. to Key West Intl., returning Wed, Jul 9, priced at $259 found 9 hours ago
American Airlines
Sun, May 25 - Thu, May 29
DFW
Dallas-Fort Worth Intl.
EYW
Key West Intl.
$333 Roundtrip, found 8 hours ago
$333
Roundtrip
found 8 hours ago
Select American Airlines flight, departing Sun, May 25 from Dallas-Fort Worth Intl. to Key West Intl., returning Thu, May 29, priced at $333 found 8 hours ago
Delta
Fri, Jul 4 - Fri, Jul 4
ATL
Hartsfield-Jackson Atlanta Intl.
EYW
Key West Intl.
$334 Roundtrip, found 13 hours ago
$334
Roundtrip
found 13 hours ago
Select Delta flight, departing Fri, Jul 4 from Hartsfield-Jackson Atlanta Intl. to Key West Intl., returning Fri, Jul 4, priced at $334 found 13 hours ago
JetBlue Airways
Tue, Jun 3 - Tue, Jun 3
ATL
Hartsfield-Jackson Atlanta Intl.
MIA
Miami Intl.
$369 Roundtrip, found 2 days ago
$369
Roundtrip
found 2 days ago
Select JetBlue Airways flight, departing Tue, Jun 3 from Hartsfield-Jackson Atlanta Intl. to Miami Intl., returning Tue, Jun 3, priced at $369 found 2 days ago

Cheap Flights to Grassy Key

Fall in love at first flight with your vacation to Grassy Key by saving a ton of cash on your last-minute cheap flight. There’s no more scouring the internet for a good deal—book your flight to Grassy Key on Hotwire, and you’ll be up, up, and on a getaway in no time.

Because once the wheels are down in Grassy Key, the good times start rolling. So buckle up, you’re in for a fun ride.

Frequently Asked Questions About flights to Grassy Key

Don’t waste your time on endless searches for cheap airline tickets oneway or roundtrip. We’ll have you on your way to Grassy Key with a tiny bag of pretzels in your hand before you can say “tray tables in the upright position”—and for a ticket price that works for your vacay budget.

So all you have to worry about is where you’re headed after the MIA airport.

What is the cheapest month to fly to Grassy Key?

Airline ticket prices fluctuate all the time, depending on the day of the week or the month of the year. The cheapest round trip flights to Grassy Key are in May, but when you book your flight on Hotwire, savings are always in season.

How many airlines fly to Grassy Key?

Variety is the spice of life, even when it comes to booking your next trip. Want options for airlines? You’ll find 15 to choose from for your flight to Grassy Key.

What airport is best to fly into Grassy Key?

When you’re planning your trip to Grassy Key, convenience is the name of the game. Luckily, Grassy Key Florida Keys Marathon Airport is nearby so you can deplane and get going on checking off everything on your Grassy Key must-do list.

How much are flights to Grassy Key?

Got very cheap flights on your vacation itinerary? When you book your airline tickets to Grassy Key on Hotwire, you may just get what’s on your getaway wish list. With tickets as low as $88, you’ll have leftover cash for at least a magazine and a bottle of water at the airport book store.

How to get cheap flights to Grassy Key?

The trick to saving a stack of cash on your flight to Grassy Key? Snatch up that Hotwire flight deal when you see a killer rate because it could be gone in a flash. And with flights as low as $88 right now, why wait?

Grassy Key Flight Information
Destination airport
Miami Intl.
Destination airport IATA code
MIA
Roundtrip price
$86

Last Minute Hotel Deals in Grassy Key

Rainbow Bend Resort
Rainbow Bend Resort
2.5 out of 5
57784 Overseas Hwy, Marathon, FL
The price is $179 per night from May 4 to May 5
$179
includes taxes & fees
May 4 - May 5
Book a stay at this beach hotel in Marathon. Enjoy a private beach, daily housekeeping, and a garden. Our guests praise the breakfast and the helpful staff in ...
8.2/10 Very Good! (620 reviews)
Great stay!
"Great stay! Loved the made to order breakfast."

Reviewed on Apr 27, 2025

Rainbow Bend Resort
Gulf View Waterfront Resort
Gulf View Waterfront Resort
2.5 out of 5
58743 OVERSEAS HWY, Marathon, FL
The price is $179 per night from May 1 to May 2
$179
includes taxes & fees
May 1 - May 2
Stay at this hotel in Marathon. Enjoy free WiFi, free parking, and daily housekeeping. Our guests praise the helpful staff and the clean rooms in our reviews. ...
8.4/10 Very Good! (454 reviews)
"I’ll be BACK"

Reviewed on Apr 18, 2025

Gulf View Waterfront Resort
Grassy Flats Resort & Beach Club
Grassy Flats Resort & Beach Club
2.5 out of 5
58182 Overseas Hwy, Marathon, FL
The price is $449 per night from May 20 to May 21
$449
includes taxes & fees
May 20 - May 21
Book a stay at this beach hotel in Marathon. Enjoy free WiFi, free parking, and 2 outdoor pools. Our guests praise the helpful staff and the property condition ...
9.4/10 Exceptional! (273 reviews)
"Beautiful location and plenty of thought put in to comfort. Only stayed one night but wished I'd booked more."

Reviewed on Apr 24, 2025

Grassy Flats Resort & Beach Club
Hawks Cay Resort
Hawks Cay Resort
4 out of 5
61 Hawks Cay Blvd, Marathon, FL
The price is $352 per night from May 21 to May 22
$352
includes taxes & fees
May 21 - May 22
Book a stay at this beach hotel in Marathon. Enjoy free WiFi, 5 outdoor pools, and a full-service spa. Our guests praise the pool and the helpful staff in our ...
7.8/10 Good! (1,009 reviews)
"Will come back !"

Reviewed on Apr 25, 2025

Hawks Cay Resort
Isla Bella Beach Resort & Spa
Isla Bella Beach Resort & Spa
5 out of 5
1 Knights Key Boulevard, MM 47, Marathon, FL
The price is $351 per night from May 8 to May 9
$351
includes taxes & fees
May 8 - May 9
Stay at this 5-star luxury hotel in Marathon. Enjoy free WiFi, 5 outdoor pools, and a full-service spa. Our guests praise the pool and the helpful staff in our ...
9/10 Wonderful! (1,003 reviews)
"True island experience and feel. Wonderful for families considering good food right on site with a variety of great kids activities all day long. We’ll be back!"

Reviewed on Apr 22, 2025

Isla Bella Beach Resort & Spa
Lime Tree Bay Resort
Lime Tree Bay Resort
3.5 out of 5
68500 Overseas Hwy, Long Key, FL
The price is $235 per night from May 26 to May 27
$235
includes taxes & fees
May 26 - May 27
Stay at this 3.5-star beach resort in Long Key. Enjoy free WiFi, free parking, and 3 outdoor pools. Our guests praise the pool and the helpful staff in our reviews. ...
9.2/10 Wonderful! (1,064 reviews)
"The staff was amazing"

Reviewed on Apr 29, 2025

Lime Tree Bay Resort
Faro Blanco Resort & Yacht Club Marathon, Curio by Hilton
Faro Blanco Resort & Yacht Club Marathon, Curio by Hilton
4 out of 5
1996 Overseas Highway, Marathon, FL
The price is $249 per night from May 7 to May 8
$249
includes taxes & fees
May 7 - May 8
Stay at this 4-star beach resort in Marathon. Enjoy free WiFi, 2 outdoor pools, and 4 restaurants. Our guests praise the breakfast and the pool in our reviews. ...
8.8/10 Excellent! (1,306 reviews)
Great place to disconnect.
"Great hotel. The staff was friendly and the drinks were great! A wonderful place to disconnect the rooms were were clean and spacious."

Reviewed on Apr 28, 2025

Faro Blanco Resort & Yacht Club Marathon, Curio by Hilton
Tranquility Bay Beachfront Hotel and Resort
Tranquility Bay Beachfront Hotel and Resort
4 out of 5
2600 Overseas Hwy, Marathon, FL
The price is $364 per night from May 8 to May 9
$364
includes taxes & fees
May 8 - May 9
Stay at this 4-star beach hotel in Marathon. Enjoy free WiFi, free parking, and 3 outdoor pools. Our guests praise the pool and the helpful staff in our reviews. ...
"Beautiful resort with exceptional service"

Reviewed on Apr 26, 2025

Tranquility Bay Beachfront Hotel and Resort
See all 2,240 properties in Grassy Key
Lowest nightly price found within the past 24 hours based on a 1 night stay for 2 adults. Prices and availability subject to change. Additional terms may apply.