Grassy Key Holidays

  • Plan, book, travel with confidence

    • payments icon

    Better together

    Save up to €185 when you book a flight and hotel together*
    lob hotels icon

    Find the right fit

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

    Rest easy

    Plan, book, and manage your trip all in one place

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 €137 per night from 27 Jul to 28 Jul
€137
27 Jul - 28 Jul
includes taxes & fees
8/10 Very Good! (693 reviews)
"Our room was clean and the bed was comfortable. The shower was also good. The onsite restaurant is excellent! Unfortunately, the seaweed made the beach area unusable."

Reviewed on 21 Jul 2025

Rainbow Bend Resort
Grassy Flats Resort & Beach Club

Grassy Flats Resort & Beach Club

2.5 out of 5
58182 Overseas Hwy, Marathon, FL
Fully refundableReserve now, pay when you stay
The price is €219 per night from 10 Aug to 11 Aug
€219
10 Aug - 11 Aug
includes taxes & fees
9.4/10 Exceptional! (294 reviews)
"Grassy flats resort and beach club in marathon Florida is an absolute gem! Most of the rooms have a tranquil beautiful blue Altantic view and are very clean. The staff is attentive and hospitable. It has several restaurants with amazing food options. It has two pools, one for families and one adult ..."

Reviewed on 21 Jul 2025

Grassy Flats Resort & Beach Club
Gulf View Waterfront Resort

Gulf View Waterfront Resort

2.5 out of 5
58743 OVERSEAS HWY, Marathon, FL
8.4/10 Very Good! (482 reviews)
"This is a fairly clean place. It has a great location to the water with jet ski rental at the property. The only real issue is the rooms are extremely noisy. We could here every step of the occupants above us and the highway noise was very loud in the room."

Reviewed on 18 Jul 2025

Get rates
Gulf View Waterfront Resort
See all 2,273 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.

Popular places to visit

Sombrero Beach showing a beach and general coastal views

Sombrero Beach

4.5/5(7 reviews)

Play beach games; go swimming, kayaking or snorkeling; and lounge in the sun at one of Marathon’s most visited beaches.

Sombrero Beach
Seven Mile Bridge

Seven Mile Bridge

4.5/5(20 reviews)

Walk, jog, cycle or drive across one of the longest bridges in North America to take in the scenic ocean views it provides.

Seven Mile Bridge

Coco Plum Beach

Why not spend a lazy afternoon at Coco Plum Beach during your trip to Marathon? Discover the area's beautiful sunsets or seek out its jogging trails.

Coco Plum Beach

What to do in Grassy Key

Marathon: Rhum Runner Aqua Park Adventure

Marathon: Rhum Runner Aqua Park Adventure

€32
per adult
Marathon: Rhum Runner Aqua Park Adventure
Marathon: Intro to Foilboarding Experience

Marathon: Intro to Foilboarding Experience

€182
per traveller
Marathon: Intro to Foilboarding Experience
Thumbs up!

Mangroves and Manatees - Guided Kayak Eco Tour

€57
per adult
96% of travellers recommend
Mangroves and Manatees - Guided Kayak Eco Tour
See all activities in Grassy Key

Frequently asked questions

How much does a Grassy Key holiday package cost?
Starting from just , a package is your portal to low-priced travel. Custom build your Grassy Key trip by selecting from our wide range of airfares, hotels and rental cars.
How do I get a cheap travel package to Grassy Key?
Search for flights that fit your schedule, add a hotel room to your booking and watch how much you save with a Grassy Key holiday package. It's that simple! From hotels and flights to activities and rental cars, Expedia is where your cheap getaway begins. And with over 550 air carriers and 1,000,000 hotels around the world to pick from, you'll never be short of choice.
Where should I stay in Grassy Key?
Close to the action. Many travellers like to book hotels within easy reach of top sights, like Dolphin Research Centre, Curry Hammock State Park and Crawl Key.
What are the top hotels in Grassy Key?
Make a reservation at Gulf View Waterfront Resort. It's one of this neighbourhood's most popular hotels. Another highly rated option in Grassy Key is Sun Outdoors Marathon.
How far in advance should I book my Grassy Key holiday?
It's difficult to pick the ideal time for airfares, but we normally say the earlier, the better. Many international flights on Expedia become available to compare up to a year in advance. If you can't book ahead, don't stress. Budget prices appear from time to time within a few weeks of departure dates.
What does an Expedia Grassy Key travel package include?
It all depends on what sort of escape you want to have. Grassy Key holiday deals can include hotels, flights and car rentals. You can mix and match to find the travel package that suits you. You can also add on experiences and activities after you've booked to get even bigger discounts.
What should I know before booking a Grassy Key travel package?
A package can be easier on the wallet than individually booking everything you need for your getaway. For example, bundle your hotels, flights and rental cars and save a tidy sum. No matter your holiday plans, there's sure to be a package within your budget.
Can I choose my airline with a Grassy Key Expedia holiday package?
With a holiday package, you're the boss. Whether you're looking to fly to Grassy Key in economy or first class, simply choose from the available airline options. Expedia has access to more than 550 partner airlines worldwide.
If I'm not able to travel, can I cancel my Grassy Key holiday package?
Whether it's your hotel, flight or rental car, you can cancel or change it. Locked in your Grassy Key holiday package in the last 24 hours? You may be able to make changes for free. For bookings made more than 24 hours ago, you may incur a fee from your hotel, airline or car rental company. For more information, take a look at our Customer Service Portal. We're here to help you every step of the way.
* Savings based on package bookings compared to the price of the same components booked separately. Savings not available on all packages.