An aerial view of a coastal town with clear blue waters, a marina, and a long pier extending into the sea.

Flights to Duck Key, Marathon from NT$6,095

View NT$6,899 flight on Wed, 2026/9/2Opens in a new window

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How much is the cheapest flight to Duck Key?

Prices were available within the past 7 days and start at NT$6,899 for one-way flights and NT$6,095 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
American Airlines
Korean Air
United
All Nippon Airways

Frequently asked questions

How do I find cheap flights to Duck Key that have flexible change policies?
By using our smart "No change fee" filter, that's how. Just enter your origin, destination and travel dates, click the "Search" button, then mark the checkbox directly under the "Flexible change policies" subheading (to the left of your screen). Expedia makes it easy to find flexible, low-cost fares to Duck Key.
Which airlines fly to Duck Key?
Figure out your ideal travel dates and then make your way towards Duck Key with one of these well-known airlines:
  • American Airlines - 5,497 flights to or near Duck Key each month, including 5,223 flights to Miami Intl. Airport (MIA) per month.
  • Delta Air Lines - 975 flights to or near Duck Key each month, including 853 flights to Miami Intl. Airport (MIA) per month.
  • Spirit Airlines - 577 flights to or near Duck Key each month, including 577 flights to Miami Intl. Airport (MIA) per month.
How can I find cheap tickets to Duck Key?
In the last seven days, NT$6,095 was the lowest price for a flight to Duck Key. If you want to save even more, book in advance and be flexible with your travel dates. Search for your journey to Duck Key, then see prices for nearby days by clicking on our "flexible dates" link.
How much is a flight to Duck Key?
If you were jetting one way from New York (JFK), you could've picked up an affordable fare for just NT$6,899 in the last seven days. Round-trip journeys to Duck Key ranged from NT$6,095 to NT$40,865 over the same period.
What are the most popular airports to fly into in Duck Key?
Deciding on an airport comes down to factors including your budget and carrier. Here are your two options in Duck Key:
  • 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 Duck Key?
If you're not fixed on your travel dates to Duck Key, try to depart early in the week. The most affordable day to take off is usually Tuesday, closely followed by Monday. Saturday is typically the most expensive day, with many people opting to take off on the weekend.
How much is a plane ticket to Duck Key?
Seats to Duck Key varied from NT$6,095 to NT$40,865 in the last seven days. Normally, the sooner you book the better the deal.
What months are the cheapest to book a flight to Duck Key?
Reserve your ticket in February to unlock the lowest-priced flights to Duck Key. The festive month of December is generally the most expensive time to purchase an airfare.

Travel information

Destination airport
Miami Intl.
Destination airport IATA code
MIA
Destination city name
Miami
Roundtrip price
NT$6,095

Trending flights to Duck Key

Prices were available within the past 7 days and start at NT$6,899 for one-way flights and NT$6,095 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta

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