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Cheap Flights to Grassy Key , FL from CA $120

View CA $120 flight on Thu, Dec 3, 2026

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  • How much is the cheapest flight to Grassy Key?

    Prices were available within the past 7 days and start at CA $120 for one-way flights and CA $260 for roundtrip, for the period specified. Prices and availability are subject to change.

    All deals

    One way

    Roundtrip

    Select Frontier Airlines flight, departing Thu, Dec 3 from Columbus to Miami, returning Mon, Dec 7, priced at CA $260 Found 5 hours ago

    Thu, Dec 3 - Mon, Dec 7 · CMH · MIA · Roundtrip

    Select Delta flight, departing Tue, Mar 16 from Columbus to Miami, returning Thu, Mar 18, priced at CA $275 Found 6 days ago

    Tue, Mar 16 - Thu, Mar 18 · CMH · MIA · Roundtrip

    Select Delta flight, departing Tue, Dec 1 from Columbus to Miami, returning Fri, Dec 4, priced at CA $278 Found 4 days ago

    Tue, Dec 1 - Fri, Dec 4 · CMH · MIA · Roundtrip

    Select American Airlines flight, departing Sat, Dec 5 from Columbus to Miami, returning Wed, Dec 23, priced at CA $381 Found 21 hours ago

    Sat, Dec 5 - Wed, Dec 23 · CMH · MIA · Roundtrip

    Select United flight, departing Thu, Dec 3 from Columbus to Miami, returning Mon, Dec 7, priced at CA $440 Found 5 hours ago

    Thu, Dec 3 - Mon, Dec 7 · CMH · MIA · Roundtrip

    Alternative airports near Grassy Key

    Prices were available within the past 7 days. Prices and availability are subject to change.

    Select flight to Key West Intl. EYW.

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    Select flight to Florida Keys Marathon MTH.

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    Find Your Flights to Grassy Key MIA

    Cheap flights to Grassy Key (MIA)

    Get started finding a cheap flight to Grassy Key on Expedia by either choosing a deal on this page or using the search bar to enter your travel dates, origin airport, and whether you want a roundtrip or one-way airfare. You can filter for flexibility, number of stops, airline, and departure/arrival times to find the best flight for you.

    We recommend using the ‘Flexible Dates’ calendar at the top of the page to see the price of plane tickets on the surrounding dates. This allows you to pick the cheapest days to fly if your trip allows flexibility and score cheap flight deals to Grassy Key.

    Roundtrip prices range from CA $260 - CA $440, and one-ways Grassy Key start as low as CA $120.

    Be aware that choosing a non-stop flight can sometimes be more expensive while saving you time. And routes with connections may be available at a cheaper rate.

    Airlines that fly to Grassy Key (MIA)

    You have several options for which airline you choose to travel with to Grassy Key. There are 6 airlines flying into MIA: Frontier Airlines, Delta, United, Air Transat, Breeze Airways, American Airlines.

    Cheap plane tickets may be available from different airlines at different times and with unique terms. It’s best to understand the details of each airline’s offer before judging its value.

    For example, if you plan to check a bag or bring a carry-on, check whether the cheap airfare deal includes a baggage allowance. If not, verify whether the baggage fee is higher than the difference of other airline plane ticket deals offering free checked/carry-on baggage in exchange for a slightly higher airfare.

    Additionally, your preferred frequent flyer membership programmes may influence your choice of cheap airline. Expedia allows you to enter your membership numbers during checkout to earn points from your airline and Expedia Rewards—all while getting a great deal and planning all your travel on one online platform.

    Find the best deals

    At Expedia, we source many flight deals from multiple providers, so you can easily find the best deals that are right for you. A great strategy for getting the best deals can be to make sure you book and travel at optimal times. Airfare to Grassy Key (MIA) varies throughout the year based on seasonal demand. You’ll see the lowest rates for roundtrips to MIA in December and in December for one-ways.

    Cancellation & flexibility

    To change or cancel eligible flights, go to ‘My Trips’ and navigate to your itinerary. If you booked within the last 24 hours, you might be able to cancel your flight for free. Learn more about flight changes or cancellations from our customer service portal. Some plane tickets are available with no change fees, which you can filter for during your search.

    Frequently Asked Questions

    How do I find cheap flights to Grassy Key that have flexible change policies?

    When it comes to traveling these days, flexibility is key. That's why we have a "No change fee" filter to help you find flexible, cheap flights to Grassy Key. It's on the left of your screen directly underneath the "Flexible change policies" heading.

    Which airlines fly to Grassy Key?

    With a good range of airlines flying into or near Grassy Key, you're spoiled for choice:

    • American Airlines - 5,497 flights to or near Grassy Key each month, including 5,223 flights to Miami Intl. Airport (MIA) per month.
    • Delta Air Lines - 975 flights to or near Grassy Key each month, including 853 flights to Miami Intl. Airport (MIA) per month.
    • Spirit Airlines - 577 flights to or near Grassy Key each month, including 577 flights to Miami Intl. Airport (MIA) per month.

    How can I find cheap tickets to Grassy Key?

    You'll always find an amazing deal with Expedia, but our "flexible dates" feature makes it even easier. Enter your preferred travel date, then check the flexible dates box above to see a list of prices for nearby days. CA $260 was the cheapest price for a flight to Grassy Key in the last seven days.

    How much is a flight to Grassy Key?

    The price of a round-trip ticket to Grassy Key in the last seven days ranged between CA $260 and CA $440. If you were heading one way from Columbus (CMH), you could have purchased a fare from just CA $120.

    What are the most popular airports to fly into in Grassy Key?

    When it comes to selecting which Grassy Key airport to jet into, here are your options:

    • Miami Intl. Airport (MIA) - 7,981 flights per month.
    • Key West Intl. Airport (EYW) - 624 flights per month.

    When is the cheapest time to fly to Grassy Key?

    Jet off on a Tuesday to improve your chances of getting the cheapest flight to Grassy Key. Mondays are usually the next most affordable day to depart. Saturday is normally the costliest day to fly anywhere.

    How much is a plane ticket to Grassy Key?

    In the last seven days, tickets to Grassy Key fluctuated between CA $260 and CA $440. Prices usually rise as your travel date nears, so land yourself a bargain today.

    What months are the cheapest to book a flight to Grassy Key?

    Snap up your ticket in February to enjoy the lowest-priced flights to Grassy Key. December is often the most expensive time to purchase a fare.

    Travel information

    Destination city nameMiami
    Destination airportMiami International Airport
    Destination airport IATA codeMIA
    Airlines servingAmerican Airlines, Delta, United, Frontier Airlines, Southwest Airlines, Alaska Airlines, Avianca, Air Canada, British Airways, TAP Portugal, Swiss International Air Lines, Iberia, KLM, Lufthansa, Turkish Airlines, Copa, LATAM Airlines Group, Aeromexico, Air France, Porter Airlines, Air Europa, WestJet, Finnair, ITA Airways, SAS, Virgin Atlantic, Air Transat, LOT-Polish Airlines, Austrian Airlines, Aer Lingus, Sterling Blue, Aerolineas Argentinas, Sky Airlines, Sun Country Airlines, Royal Air Maroc, Volaris
    Popular airlineAmerican Airlines
    Roundtrip priceCA $260

    Explore a world of travel with Expedia

    Trending flights to Grassy Key

    Prices were available within the past 7 days and start at CA $120 for one-way flights and CA $260 for roundtrip, for the period specified. Prices and availability are subject to change.

    All deals

    One way

    Roundtrip

    Select Air Transat flight, departing Sun, Jan 24 from Toronto to Miami, returning Thu, Jan 28, priced at CA $433 Found 2 hours ago

    Sun, Jan 24 - Thu, Jan 28 · YYZ · MIA · Roundtrip

    *Available to Expedia members.