Grassy Key Holidays from £979

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Photo by Monica Ferro

  • Plan, book, travel with confidence

  • Better together

    Save up to £750 when you book a flight and hotel together*

  • Find the right fit

    With over 300,000 hotels worldwide, it's easy to create a perfect package

  • Rest easy

    Packages with flights are ATOL protected

Top Grassy Key Flight + Hotel Deals

Price found within the past 48 hours. Click for updated prices.
YotelPad Miami

YotelPad Miami

4 out of 5
Downtown Miami
Price was £1,638, price is now £979 per person
£979
per person
18 Jan - 23 Jan
found 16 hours ago
Return flight included
London (LON) to Miami (MIA)
8.4/10 Very good! (543 reviews)

The Retreat Collection at 1 Hotel & Homes South Beach

The Retreat Collection at 1 Hotel & Homes South Beach

5 out of 5
South Beach
Price was £44,577, price is now £23,382 per person
£23,382
per person
30 Dec - 6 Jan
found 19 hours ago
Return flight included
London (LHR) to Miami (MIA)
8/10 Very good! (1 review)
Horrible checkin / checkout... Would never stay there again...Double charged me entire stay and still fighting to get someone to refund 2nd one that is so clearly a duplicate for same stay....

Reviewed on 22 Jun 2016

Miami Vacation Rentals - Downtown

Miami Vacation Rentals - Downtown

5 out of 5
Downtown Miami
Price was £3,403, price is now £1,986 per person
£1,986
per person
30 Dec - 6 Jan
found 19 hours ago
Return flight included
London (LHR) to Miami (MIA)
9/10 Wonderful! (111 reviews)
It was downtown area shops nearby in walking distance, offered a nice pool and hot tub .Atmosphere was buzzing. Place clean .Elevators were unique .Staff friendly and helpful .I had a great experience

Reviewed on 30 Oct 2026

Cavalier Hotel South Beach

Cavalier Hotel South Beach

3.5 out of 5
South Beach
Price was £2,358, price is now £1,377 per person
£1,377
per person
30 Dec - 6 Jan
found 19 hours ago
Return flight included
London (LHR) to Miami (MIA)
8.6/10 Excellent! (1,002 reviews)

President Hotel

President Hotel

3.5 out of 5
South Beach
Price was £2,050, price is now £1,262 per person
£1,262
per person
30 Dec - 6 Jan
found 19 hours ago
Return flight included
London (LHR) to Miami (MIA)
8.4/10 Very good! (2,874 reviews)

Grassy Key Essential Information

Language
English
Currency
U.S dollars
Closest Airport
Miami Intl. Airport (MIA)

Top hotels in Grassy Key

Rainbow Bend Resort

Rainbow Bend Resort

2.5 out of 5
57784 Overseas Hwy Marathon FL
Fully refundableReserve now, pay when you stay
The price is £129 per night from 31 Oct to 1 Nov
£129
31 Oct - 1 Nov
includes taxes & fees
8.2/10 Very good! (1,000 reviews)
"Nice accommodations. Very casual Quiet"

Reviewed on 27 Oct 2026

Rainbow Bend Resort
Gulf View Waterfront Resort

Gulf View Waterfront Resort

2.5 out of 5
58743 OVERSEAS HWY Marathon FL
The price is £129 per night from 1 Nov to 2 Nov
£129
1 Nov - 2 Nov
includes taxes & fees
8.4/10 Very good! (637 reviews)
"The views were pretty, what we didn’t like was the lack of keeping up on our stay, like room cleaning, towels. We had to ask"

Reviewed on 29 Oct 2026

Gulf View Waterfront Resort
Grassy Flats Resort & Beach Club

Grassy Flats Resort & Beach Club

4 out of 5
58182 Overseas Hwy Marathon FL
The price is £209 per night from 18 Nov to 19 Nov
£209
18 Nov - 19 Nov
includes taxes & fees
Grassy Flats Resort & Beach Club
See all 2,360 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.
All Inclusive Holidays
All Inclusive Holidays
Beach Holidays
Beach Holidays
Family Friendly Holidays
Family Friendly Holidays

What to do in Grassy Key

Marathon: Rhum Runner Aqua Park Adventure

Marathon: Rhum Runner Aqua Park Adventure

£28
per adult
Marathon: Rhum Runner Aqua Park Adventure
Sandbar Adventure Cruise in the Florida Keys

Sandbar Adventure Cruise in the Florida Keys

£76
per adult
100% of travellers recommend
Sandbar Adventure Cruise in the Florida Keys
Day Sailing Adventure in the Florida Marine Sanctuary

Day Sailing Adventure in the Florida Marine Sanctuary

£90
per adult
100% of travellers recommend
Day Sailing Adventure in the Florida Marine Sanctuary
See all activities in Grassy Key

Frequently asked questions

How much does a Grassy Key travel package cost?
Browse and book everything in one place with our Grassy Key travel packages, which start from only £979. Select the hotels and flights that match your travel style. Then, add on some sightseeing activities for an unforgettable getaway.
If I'm not able to travel, can I cancel my Grassy Key travel package?
Whether it's your flight or hotel, you can cancel or amend it. Booked your Grassy Key travel package in the last 24 hours? You may be able to make any changes for free. For bookings older than that, you may incur a fee from your airline, hotel or car rental company. For further information, look up our Customer Service Portal. We're here to help you each step of the way.
How do I get a cheap travel package to Grassy Key?
Think of all the fun things you could do in Grassy Key with a wad of extra cash in your wallet. Watch your savings stack up when you bundle your airfare and hotel bookings into a Grassy Key travel package. You have plenty of choice when you book with Expedia too. In fact, you can select from over 550 airlines and 1,000,000 properties around the world. Whether you're holidaying with the entire family or travelling solo, planning a getaway to Grassy Key is better with a package.
Does Expedia offer Book Now, Pay Later Grassy Key holidays?
We certainly do. Expedia has teamed up with online lender Klarna to help you easily pay for your holiday in instalments. Simply choose the payment plan that suits you best during checkout and take away the stress of budgeting for your next trip. Be sure to bundle your flights, car hire and hotel with Expedia to get the biggest bang for your travel buck. Consider these flexible payment options below:

  • Pay monthly holidays: Klarna offers manageable monthly payment plans that work for all budgets, so you can have that well-earned holiday now.
  • Pay in instalments holidays: Like the idea of paying for your holiday in multiple transactions? Then go for this Book Now, Pay Later option from Klarna.
  • Low deposit holidays: Clicking the "book now" button is easier with this payment option. Put down a small deposit on your holiday and then start packing your suitcase.

Where should I stay in Grassy Key?
A holiday in Grassy Key isn't complete without stopping by Dolphin Research Centre, Curry Hammock State Park and Crawl Key. Spend your nights near these sights and make sightseeing a breeze.
What are the top hotels in Grassy Key?
Secure a room at Faro Blanco Resort & Yacht Club. It's one of this neighbourhood's most in-demand hotels. Another reputable option in Grassy Key is Fairfield Inn & Suites by Marriott Marathon Florida Keys.
How far in advance should I book my Grassy Key holiday?
It's tricky picking the best time for airfares, but we usually say the earlier, the better. Many international journeys on Expedia become available to compare up to 12 months in advance. If you can't book ahead, don't despair. Bargain prices appear from time to time just weeks before departure dates.
What does an Expedia Grassy Key travel package include?
From flights and hotels to rental cars, Expedia can help you craft a Grassy Key package that suits you. Holidaying for a few weeks? Look into a flight, rental car and hotel bundle. If your break is short, a hotel and flight deal could be what you're after. Activities can also be added after you've booked. Our packages make it easy to save and plan.
What should I know before booking a Grassy Key travel package?
A package can be easier on the hip pocket than individually booking everything you need for your adventure. For example, bundle your hotels, flights and rental cars and save a packet. No matter your holiday goals, you'll find a package that suits your budget.
Can I choose my airline with a Grassy Key Expedia travel package?
Definitely. Expedia has over 550 partner airlines to pick from globally. With such a huge range of choice, finding the ideal carrier to fly you to Grassy Key will be a breeze.

Explore a world of travel with Expedia

* Savings based on package bookings compared to the price of the same components booked separately. Savings not available on all packages. Flight-inclusive packages are ATOL protected.