$248 Cheap Flights from Trenton (TTN) to Key West (EYW)

View $248 flight on Mon, Nov 24, 2025Opens in a new window

Popular airlines from Trenton–Mercer Airport (TTN) to Key West Intl. Airport (EYW)

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Cheap Flights from Trenton to Key West (TTN-EYW)

Prices were available within the past 7 days and start at $248 for one-way flights and $423 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Tue, Jan 13 - Sat, Jan 17
TTN
Trenton
EYW
Key West
$423 Roundtrip, just found
$423
Roundtrip
just found
Select American Airlines flight, departing Tue, Jan 13 from Trenton to Key West, returning Sat, Jan 17, priced at $423 just found
American Airlines
Thu, Jan 1 - Wed, Jan 7
TTN
Trenton
EYW
Key West
$428 Roundtrip, found 23 hours ago
$428
Roundtrip
found 23 hours ago
Select American Airlines flight, departing Thu, Jan 1 from Trenton to Key West, returning Wed, Jan 7, priced at $428 found 23 hours ago
American Airlines
Wed, Jan 14 - Sat, Jan 17
TTN
Trenton
EYW
Key West
$432 Roundtrip, found 1 day ago
$432
Roundtrip
found 1 day ago
Select American Airlines flight, departing Wed, Jan 14 from Trenton to Key West, returning Sat, Jan 17, priced at $432 found 1 day ago
American Airlines
Tue, Jan 13 - Wed, Jan 21
TTN
Trenton
EYW
Key West
$442 Roundtrip, found 20 hours ago
$442
Roundtrip
found 20 hours ago
Select American Airlines flight, departing Tue, Jan 13 from Trenton to Key West, returning Wed, Jan 21, priced at $442 found 20 hours ago
American Airlines
Thu, Jan 8 - Thu, Jan 15
TTN
Trenton
EYW
Key West
$463 Roundtrip, just found
$463
Roundtrip
just found
Select American Airlines flight, departing Thu, Jan 8 from Trenton to Key West, returning Thu, Jan 15, priced at $463 just found
American Airlines
Fri, Nov 21 - Sun, Nov 23
TTN
Trenton
EYW
Key West
$482 Roundtrip, found 2 days ago
$482
Roundtrip
found 2 days ago
Select American Airlines flight, departing Fri, Nov 21 from Trenton to Key West, returning Sun, Nov 23, priced at $482 found 2 days ago
American Airlines
Thu, Nov 27 - Sat, Dec 6
TTN
Trenton
EYW
Key West
$482 Roundtrip, found 20 hours ago
$482
Roundtrip
found 20 hours ago
Select American Airlines flight, departing Thu, Nov 27 from Trenton to Key West, returning Sat, Dec 6, priced at $482 found 20 hours ago
American Airlines
Thu, Nov 27 - Tue, Dec 2
TTN
Trenton
EYW
Key West
$487 Roundtrip, found 5 hours ago
$487
Roundtrip
found 5 hours ago
Select American Airlines flight, departing Thu, Nov 27 from Trenton to Key West, returning Tue, Dec 2, priced at $487 found 5 hours ago
American Airlines
Sat, Jan 24 - Wed, Jan 28
TTN
Trenton
EYW
Key West
$490 Roundtrip, found 2 hours ago
$490
Roundtrip
found 2 hours ago
Select American Airlines flight, departing Sat, Jan 24 from Trenton to Key West, returning Wed, Jan 28, priced at $490 found 2 hours ago
American Airlines
Tue, Jan 13 - Wed, Jan 21
TTN
Trenton
EYW
Key West
$492 Roundtrip, found 20 hours ago
$492
Roundtrip
found 20 hours ago
Select American Airlines flight, departing Tue, Jan 13 from Trenton to Key West, returning Wed, Jan 21, priced at $492 found 20 hours ago

Alternative airports near Key West

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

Select flight to Key West Intl. EYW. Cheapest and Closest option available. Average driving time to city center is 8 minutes. Flights from $565
EYW
Key West Intl.
CheapestClosest
Average driving time to city center8 min
Flights from $565

Frequently asked questions

How much does a flight from Mercer Airport (TTN) to Key West Intl. Airport (EYW) cost?
Secure a cheap one-way flight from $248 or cheap return flight from $423 from Mercer Airport (TTN) to Key West Intl. Airport (EYW) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from Mercer Airport (TTN) to Key West Intl. Airport (EYW)?
January is the most affordable month to fly from TTN to EYW. Traveling during an off-peak travel window is often the key to scoring lower fares.
Which airlines fly direct from Mercer Airport (TTN) to Key West Intl. Airport (EYW)?
Direct flights aren't available from Trenton, NJ (TTN-Mercer) to Key West Intl. Airport (EYW). However, you'll find other airports with nonstop flights. Board your plane at Liberty Intl. Airport (EWR) and fly straight to Key West without layovers.
What is the cheapest airline that flies from Mercer Airport (TTN) to Key West Intl. Airport (EYW)?
To find the cheapest airline that'll fly you from TTN to EYW, use Expedia's filter tool. Customize your search based on your travel style, such as preferred carriers and seat class. You can then sort your results by "Price (lowest to highest)" to see the cheapest fares upfront.
How many flights per day from Mercer Airport (TTN) to Key West Intl. Airport (EYW)?
Direct flights from Mercer Airport (TTN) to Key West Intl. Airport (EYW) aren't available daily, so you'll have to take a flight with a layover. Explore your options with Expedia's filter tool. Enter your travel details and click on either "1 Stop" or "2+ Stops."
What day of the week has the most flights from TTN to EYW?
Friday is usually the busiest day for flights, while Tuesday tends to be the quietest.* Remember that flight schedules can vary depending on a range of factors, including the time of year and carrier.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Mercer Airport (TTN) to Key West Intl. Airport (EYW)?
To avoid potential delays on the Mercer Airport (TTN) to Key West Intl. Airport (EYW) route, fly before 3 PM. Later departures have a 22% higher chance of cancellation.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Mercer Airport (TTN) to Key West Intl. Airport (EYW) last-minute?
Booking your ticket from TTN to EYW right before your journey is generally more expensive. However, if there's some wiggle room with your schedule, you could score a cheap last-minute fare.
Is it cheaper to book a TTN to EYW flight and hotel package?
Compared with arranging flights and hotels separately, booking a TTN to EYW flight and hotel package with Expedia could lead to significant savings. Better yet, managing everything in one place will take the hassle out of travel planning. Simply secure your flights and select from our extensive range of stays, then tailor your trip with extras like car rentals and activities.
Can I cancel or change the date of my flight from Mercer Airport (TTN) to Key West Intl. Airport (EYW)?
In most instances, you can reschedule or cancel your TTN to EYW flight. However, additional charges may apply, especially if you made your booking over 24 hours ago. Check your itinerary for the airline's policies and fees on flight changes, or if you need more details, visit our Customer Service portal.

Travel information

Origin airport
Mercer
Destination airport
Key West Intl.
Airlines serving
American Airlines
Roundtrip price
$422
Distance
1158 mi

Book with confidence

Trenton to Key West Flights

The cheapest times to fly from Trenton to Key West

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Trenton to Key West are during the month of January. You can find some of the cheapest flights from Trenton to Key West with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Trenton to Key West

Sunday is one of the best days to book for cheap flights from Trenton to Key West: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Trenton to Key West

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Trenton to Key West in 2025. You can also book with separate airlines for your outbound and return journeys, from $248 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Trenton to Key West flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Trenton to Key West airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

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

 

Trenton to Key West Flights

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*Available to One Key members.