$19 Cheap Flights to Key Biscayne, FL

Flights to Key Biscayne at a glance

Booking flights to Key Biscayne is straightforward. You can choose from a variety of options, including full-service and budget airlines. Compare travel times and select the best fit for your budget and itinerary as you plan to explore the city's renowned attractions and neighborhoods.

• Major airport near Key Biscayne: Miami International Airport (MIA)
• Flights per week: 6,600+ flights arriving at Key Biscayne airport
• Number of airlines that fly to Key Biscayne: around 70+ carriers

Popular airport near Key Biscayne

Key Biscayne is a beautiful island city known for its outdoor activities, family-friendly atmosphere, and vibrant culture. Visitors flock to this destination for its stunning beaches and recreational opportunities, whether for leisure or business. The nearest airport to Key Biscayne is Miami International Airport (MIA), which offers convenient access to this enchanting locale.

• Miami International Airport (MIA): Situated in Miami-Dade County, Florida, approximately 10 miles from Key Biscayne, this airport offers a wide array of both domestic and international flights. With connections to over 240 domestic cities and 305 international locations, travelers can opt for first class, premium economy class, or business class seating for enhanced comfort, contingent on the airline and route. Notable carriers operating from this airport include American Airlines, Delta, and Frontier Airlines.

Top routes to Key Biscayne

• New York (JFK/LGA) to Key Biscayne (MIA), with one-way tickets available from around $50
• Newark (EWR) to Key Biscayne (MIA), with one-way fares starting at around $65
• Boston (BOS) to Key Biscayne (MIA), with one-way flights starting at around $65
• Chicago (ORD/MDW) to Key Biscayne (MIA), with one-way airfare from around $40
• Atlanta (ATL) to Key Biscayne (MIA), with one-way fares starting at around $35

Cheapest routes to Key Biscayne

• Atlanta (ATL) to Key Biscayne (MIA), with low one-way fares from around $35
• Philadelphia (PHL) to Key Biscayne (MIA), with budget one-way fares from around $35
• Chicago (ORD/MDW) to Key Biscayne (MIA), with affordable one-way prices from around $40
• Baltimore (BWI) to Key Biscayne (MIA), with low-cost one-way tickets from around $40
• Dallas (DFW/DAL) to Key Biscayne (MIA), with low-cost one-way tickets from around $40

*Flight times and fares vary by season and availability and are based on one-way routes

Top airlines with flights to Key Biscayne

• American Airlines: This airline operates flights to Miami International Airport (MIA), handling about 51% of arrivals to Key Biscayne. The average fare for a one-way ticket is around $370, with premium cabin services that can include premium economy, business, and first class based on the route.
• Delta: Also flying into Miami International Airport (MIA), Delta represents roughly 13% of arrivals to Key Biscayne. Travelers can expect an average one-way fare of about $360, with options for premium economy, business, and first class depending on the route.
• United: Servicing Miami International Airport (MIA) as well, United accounts for approximately 8% of arrivals to Key Biscayne. The average cost for a one-way ticket is around $360, with premium cabin choices including premium economy, business, and first class based on the route.
• Southwest Airlines: This carrier flies to Miami International Airport (MIA) and is responsible for about 6% of arrivals to Key Biscayne. Expected one-way fares are approximately $220, making it a budget-friendly option for travelers.
• Frontier Airlines: Operating flights to Miami International Airport (MIA), Frontier Airlines contributes around 4% of arrivals to Key Biscayne. The average one-way fare is approximately $140, often appealing to those seeking economical travel options.

Best time to fly to Key Biscayne

The most popular months for travelers to fly to Key Biscayne are January, March, and April, when peak temperatures in Key Biscayne can reach up to 76.6°F in April. If you prefer quieter travel, consider September, the least busy time to visit with temperatures around 83.1°F and typically the lowest average one-way fare (around $207), roughly 10% cheaper than the yearly average. Looking for additional cheaper months to fly? October, May, and August offer average one-way fares of around $218, making them good options for flexible travelers.

*Average one-way fare is based on Expedia flight booking data from January 2025 to April 2026 for the specified route and travel class and may change depending on availability, dates, and demand.

How to save money on a flight to Key Biscayne

Getting some of the best deals on flights to Key Biscayne is all about timing and flexibility. Here are some key tips to help you save:

1. Compare flight options—use Expedia's search tool to compare airlines, routes, direct vs. non-direct flights, and flight times. You can also sort by price to find the most affordable options.
2. Set up price alerts—as an Expedia member you can use Price Tracking to receive notifications when flight prices change.
3. Bundle and save—book a flight and unlock a hotel deal on Expedia*, or explore our Key Biscayne hotel and flight deals.
4. Think about luggage-nowadays, it's important to check the airline's baggage policies to find the best value. That may be paying for an additional carry-on bag or booking a ticket with checked luggage included. Either way, double-check your baggage allowance before confirming your booking to avoid excess baggage fees at the airport.
5. Earn miles—you can earn airline miles when you book your Key Biscayne flight with Expedia. Just select your frequent flyer program and enter your program number when confirming your booking.

*For members. Select hotels.

Arriving in Key Biscayne

Key Biscayne welcomes travelers through its range of transport options based on price, convenience, and proximity. Here's how to reach Key Biscayne efficiently:

• Public transportation: From Miami International Airport, Miami Airport Station (a train station) is located about 1.6 miles away by car, while Brownsville Station (a metro station) is situated about 4.3 miles from the airport by car. For those traveling by sea, Miami Seaport is approximately 7.8 miles away by car.
• Hotel transfer: Transfers offer a convenient way to reach your hotel in Key Biscayne, with private rides that can be arranged in advance.
• Car rental: Renting a car in Key Biscayne is a good option if you plan to explore and sightsee beyond the city. Browse cheap car rentals in Key Biscayne on Expedia.
• Taxi/ride-hailing: Taxis and ride-hailing services may be available from designated pickup areas outside the terminal, check locally on arrival.

Where to stay in and around Key Biscayne

• Miami Beach: A vibrant city located 7 miles drive away from Key Biscayne, Miami Beach is a favorite destination for families and outdoor enthusiasts. Visitors can explore the iconic Ocean Drive, known for its lively atmosphere and family-friendly beaches. For those seeking entertainment, the Miami Beach Convention Center hosts various events, while the Miami Beach Boardwalk offers a scenic esplanade perfect for a romantic stroll or an outdoor adventure. Shopping options abound, with a variety of malls and centers catering to all tastes.
• Coral Gables: Located 11 miles drive away from Key Biscayne, Coral Gables is an elegant city known for its historic charm and business-friendly environment. This area is ideal for families and culture seekers alike, with attractions like the historic University of Miami and the bustling Miracle Mile, lined with shops and eateries. For sports fans, Kaseya Center offers a venue for exciting events. A trip to Coral Gables provides a blend of city life and family-focused activities.
• Virginia Key Beach Park: Situated around the area of Key Biscayne, Virginia Key Beach Park is a serene escape for nature lovers and families. This beautiful park features a lovely beach and scenic island landscapes, ideal for outdoor activities. Nearby, visitors can venture to Ocean Drive for a taste of local life or relax at Bayfront Park, which offers urban green spaces. With its proximity to shopping areas, Virginia Key Beach Park is a perfect spot to unwind after exploring the vibrant local scene.

Tips for short-haul flights to Key Biscayne

For quick getaways, efficiency is key. Here is how to make your short-haul journey smoother:

• Pack light and skip checked bags—when flying with budget airlines, it’s often more economical to travel with just a carry-on. Maximize your packing efficiency by using mini toiletries, wearing your heaviest clothing, and coordinating outfits. This approach also helps you avoid the wait at baggage claim upon arrival.
• Bring your own entertainment—many short-haul flights may lack in-flight entertainment options. To keep yourself entertained, download TV shows, movies, music, or podcasts beforehand, and don’t forget to bring a book. Be sure to fully charge your devices before you board.
• Arrive at the airport in plenty of time—even for short or domestic flights, aim to arrive at least 1.5 to 2 hours prior to departure, considering potential traffic and security lines.
• Bring your own snacks and water—pack your favorite snacks and a refillable water bottle to stay hydrated and save money at the airport.

Tips for long-haul flights to Key Biscayne

Flying long-haul sometimes requires extra planning to ensure a comfortable journey:

• Select your seat in advance—for longer flights, choosing your seat is essential for comfort. Full-service airlines often allow free seat selection once online check-in opens, typically 24–48 hours before your flight. Some airlines may provide seat selection even earlier than this.
• Arrive at the airport in plenty of time—aim to be at the airport at least 3 hours prior to departure for international flights to ensure ample time for check-in, security, and immigration.
• Relax at the airport—if you have some extra time, take the opportunity to explore the shops, grab a coffee, or unwind at the gate or in a departure lounge if you have access. Airport Wi-Fi is generally free and available.
• Adjust to the new time zone mid-flight—begin syncing your body clock by changing your watch and adjusting your sleep schedule to align with your destination's time zone. Try to sleep or stay awake during the flight according to the local time at your arrival destination to help minimize jet lag.

Tips to find the cheapest flights to Key Biscayne

The cheapest day to fly

Get started finding a cheap flight to Key Biscayne on Expedia by either choosing a deal on this page or entering into the search bar your travel dates, origin airport, and whether you want 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.

The cheapest month to fly

January is the cheapest month to fly to Key Biscayne. This coincides with the low season when fewer people travel. Whichever month you travel in, though, be sure to book at least a month in advance if you want to score cheap tickets to Key Biscayne. ARC's data shows that domestic flights booked 28 days or more before departure are typically 24% cheaper than those booked last minute.

The most affordable time to book a flight

Typically, a Sunday can be the cheapest time to book a flight to Key Biscayne, according to ARC’s data. On average, you could save between 6% and 13% by booking on a Sunday instead of a Friday, which is the most expensive day to make a reservation.

The cheapest round-trip tickets to Key Biscayne

The lowest price for round-trip flights to Key Biscayne in 2026 starts from $50, while one-way tickets start from from $19. Expedia's effective search tool is one of the best ways to find a budget airfare. Simply enter your dates, and within seconds, it'll show you a vast selection of the cheapest flights to Key Biscayne. If you have a preferred departure time or airline, you can use the handy filters to customize your search.

The cheapest airlines flying to Key Biscayne

Frontier Airlines, Allegiant Air, Breeze Airways, Southwest Airlines, JetBlue Airways are just some of the airlines that can typically offer cheap tickets to Key Biscayne. You can find their most affordable flights by using the “airline” search filter and then sorting prices from low to high. As a trusted partner of the world's leading airlines, Expedia offers you some of the best airfare deals to Key Biscayne and countless more destinations worldwide.

The most affordable airports to fly into

To view the cheapest airports to fly into for Key Biscayne, simply order your search results from lowest to highest price. Expedia's search tool compares flight prices for all airports close to your destination, so you don't have to manually search them one by one to find the cheapest flight to Key Biscayne. If you have a preferred place to fly into, take advantage of the “arrival airport” filter to narrow down your search on Expedia.

Save with a package

With Expedia's amazing package deals, you could save hundreds of dollars by booking your Key Biscayne plane tickets together with your accommodations, car rental, or activities. Just select the search wizard's “package” option to view some of the cheapest deals. Look out for the green savings label to see how much you're saving.

Date flexibility for the cheapest flights to Key Biscayne

If you can be flexible with your travel dates, it's a good idea to broaden your search by comparing prices on different days. This will open up more options, meaning you could uncover a less expensive flight to Key Biscayne.

Stopover savings

The cheapest tickets to Key Biscayne are sometimes those with a stopover. Book one of these flights, and you'll change planes at an airport en route to Key Biscayne. While the overall travel time might be longer than a non-stop flight, you may decide it's worth it for the money saved.

Get Expedia's Price Drop Protection

Price Drop Protection means that if your flight gets cheaper after booking, you'll be credited the difference*. This gives you peace of mind that you're getting one of the cheapest flights to Key Biscayne for your chosen departure. Expedia's Price Drop Protection is available for a small fee but is free to One Key Gold and Platinum tier members.

*Terms apply.

Use our Price Tracking feature

Expedia's Price Tracking feature is another great tool that removes the guesswork from finding cheap flights to Key Biscayne. Simply download the free Expedia app to your smart device and activate Key Biscayne flight price alerts for your travel dates. There's even a price predictor tool that uses historical data to indicate the best time to book, giving you peace of mind that you'll nab the lowest prices.

Book with Expedia

As well as Price Drop Protection and Price Tracking, Expedia's close partnership with a vast selection of the world's leading airlines means you're sure to find cheap flights to Key Biscayne. Plus, the One Key rewards program lets you earn real cash rewards on most bookings that you can use to save money on future trips. Best of all, it's free to join, and members often unlock exclusive discounts, too.

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.