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Key Largo

$126+ Cheap flights from Trenton, NJ (TTN) to Key Largo, FL

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/30. Fares are subject to change and may not be available on all flights or dates of travel.
TTN — MIA
Nov 9 — Nov 161
Sun 11/9
Sun 11/16
1 adult, Economy
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Find flight deals from Trenton to Key Largo

Cheapest flights from Trenton to Key Largo
Explore the most affordable flight options available from Trenton to Key Largo. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 10, 2025.

This Kiwi.com deal was found by Cheapflights users on 10/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/36:20 pmTTN - MIA
2 stops19h 08mFrontier
Thu 11/2011:55 amMIA - TTN
1 stop5h 54mFrontier
Deal found 10/8$239
This Kiwi.com deal was found by Cheapflights users on 10/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/29:29 pmTTN - MIA
2 stops27h 05mFrontier
Thu 11/205:30 amMIA - TTN
1 stop12h 19mFrontier
Deal found 10/8$245
This Kiwi.com deal was found by Cheapflights users on 10/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/206:44 pmTTN - MIA
1 stop20h 41mFrontier
Mon 11/246:21 pmMIA - TTN
1 stop14h 36mFrontier
Deal found 10/9$287
This Kiwi.com deal was found by Cheapflights users on 10/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/276:44 pmTTN - MIA
1 stop16h 05mFrontier
Sun 12/75:30 amMIA - TTN
2 stops30h 20mFrontier
Deal found 10/8$314
This Kiwi.com deal was found by Cheapflights users on 10/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/711:08 amTTN - MIA
2 stops22h 50mMultiple Airlines
Thu 11/205:30 amMIA - TTN
1 stop12h 19mMultiple Airlines
Deal found 10/8$325
This Frontier deal was found by Cheapflights users on 10/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/166:00 amTTN - MIA
2 stops17h 56mFrontier
Thu 10/239:51 amMIA - TTN
2 stops14h 08mFrontier
Deal found 10/9$332
This Kiwi.com deal was found by Cheapflights users on 10/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/229:52 amTTN - MIA
1 stop9h 57mFrontier
Sat 11/295:30 amMIA - TTN
1 stop27h 27mFrontier
Deal found 10/8$339
This Kiwi.com deal was found by Cheapflights users on 10/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/88:00 amTTN - MIA
2 stops27h 00mMultiple Airlines
Thu 11/2011:55 amMIA - TTN
1 stop5h 54mMultiple Airlines
Deal found 10/8$353
This Kiwi.com deal was found by Cheapflights users on 10/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/611:18 amTTN - MIA
2 stops13h 16mFrontier
Thu 11/2011:55 amMIA - TTN
1 stop5h 54mFrontier
Deal found 10/8$393

Cheap flight deals from Trenton to Key Largo

Keep the following information in mind while searching for Trenton to Key Largo flight deals. Data was last updated October 10, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$239
(Kiwi.com)

One-way from

$126
(Kiwi.com)

Popular in

May

Cheapest in

February

Average price

$217
Provider with most accurate pricing for New York (NYC)-Miami flight deals.
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Provider most trusted by Cheapflights users for New York (NYC)-Miami flights.
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From Trenton-Mercer to Key Largo
Search Deals
One-way flight from Trenton-Mercer to Key Largo
Search Deals
Highest demand for flights based on searches. 37% potential increase in price ($134 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 20% potential price decrease ($38 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Trenton to Key Largo that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated October 10, 2025.
Use the filters below to find and compare flights from Trenton to Key Largo that are best for you.

Fly from

Trenton

Fly to

Key Largo

Route

Depart

Return

Price

TrentonMiami

TTN - MIA

TTNMIA

Trenton-Mercer

Mon 11/3

6:20 pm-1:28 pm

2 stops19h 08m

Miami

Thu 11/20

11:55 am-5:49 pm

1 stop5h 54m

$239

TrentonMiami

TTN - MIA

TTNMIA

Trenton-Mercer

Sun 11/2

9:29 pm-12:34 am

2 stops27h 05m

Miami

Thu 11/20

5:30 am-5:49 pm

1 stop12h 19m

$245

TrentonMiami

TTN - MIA

TTNMIA

Trenton-Mercer

Thu 11/20

6:44 pm-3:25 pm

1 stop20h 41m

Miami

Mon 11/24

6:21 pm-8:57 am

1 stop14h 36m

$287

TrentonMiami

TTN - MIA

TTNMIA

Trenton-Mercer

Thu 11/27

6:44 pm-10:49 am

1 stop16h 05m

Miami

Sun 12/7

5:30 am-11:50 am

2 stops30h 20m

$314

TrentonMiami

TTN - MIA

TTNMIA

Trenton-Mercer

Fri 11/7

11:08 am-9:58 am

2 stops22h 50m

Miami

Thu 11/20

5:30 am-5:49 pm

1 stop12h 19m

$325

TrentonMiami

TTN - MIA

TTNMIA

Trenton-Mercer

Sat 11/22

9:52 am-7:49 pm

1 stop9h 57m

Miami

Sat 11/29

5:30 am-8:57 am

1 stop27h 27m

$339

TrentonMiami

TTN - MIA

TTNMIA

Trenton-Mercer

Sat 11/8

8:00 am-11:00 am

2 stops27h 00m

Miami

Thu 11/20

11:55 am-5:49 pm

1 stop5h 54m

$353

TrentonMiami

TTN - MIA

TTNMIA

Trenton-Mercer

Thu 11/6

11:18 am-12:34 am

2 stops13h 16m

Miami

Thu 11/20

11:55 am-5:49 pm

1 stop5h 54m

$393

TrentonMiami

TTN - MIA

TTNMIA

Trenton-Mercer

Thu 10/30

4:27 pm-12:34 am

2 stops32h 07m

$126

TrentonMiami

TTN - MIA

TTNMIA

Trenton-Mercer

Tue 11/25

9:52 am-5:09 pm

1 stop7h 17m

$137

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/8

Showing 1-10 of 16 results
1
2

Best time to book a flight from Trenton to Key Largo

Have a flexible travel schedule? Discover the best time to fly to Key Largo from Trenton with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Trenton to Key Largo

What is the cheapest month to book a flight from Trenton, New Jersey to Key Largo?

Currently, December is the cheapest month in which you can book a flight from Trenton, New Jersey to Key Largo (average of $26). Flying from Trenton, New Jersey to Key Largo in July is currently the most expensive (average of $85). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from TTN to KE9?

Find hourly flight availability from Trenton to Key Largo. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 10, 2025.

Unlike in the morning, when flights are generally more expensive, you can save up to 56% on flights from Trenton, New Jersey to Key Largo by exploring options for tickets at noon.

Reviews of airlines servicing Key Largo

Get insights into the airlines that provide service to Key Largo. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Key Largo. Reviews last updated October 10, 2025.
Get a feel of what it's like to fly with Spirit Airlines and Frontier from Trenton to Key Largo by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Spirit Airlines
6.3
Okay
8,087 reviews

Comfort

5.9

Entertainment

5.0

Boarding

6.6

Food

5.1

Overall

6.3

Crew

7.0

Reviews

1 / 20
2.0
Mediocre

Anonymous,Apr 2025

PNS - MCO

Bad experience. Unhappy with the changing of flight times and one particular flight attendant (Bartholomew) on our flight from Orlando to Detroit. Traveling with a large family of 7, including our 18 month old, can be arduous but when the airline changes your flight time from landing at 9:30 pm to landing after midnight, this becomes much more difficult. When our 18 month old was predictably over tired and fussy, my wife and I tried to move to an open row so we can console her more effectively. The flight attendent rebuked us and said we could not sit in an exit row. We were not planning on sitting there for more than a few minutes but just to have space to console our screaming 18 month old. Spirit did not allow for a family friendly trip. Likely will be choosing a different airline next time.
Spirit Airlines
6.3
Okay
8,087 reviews
Spirit Airlines
6.3
Okay
8,087 reviews

Comfort

5.9

Entertainment

5.0

Boarding

6.6

Food

5.1

Overall

6.3

Crew

7.0

Reviews

1 / 20
2.0
Mediocre

Anonymous,Apr 2025

PNS - MCO

Bad experience. Unhappy with the changing of flight times and one particular flight attendant (Bartholomew) on our flight from Orlando to Detroit. Traveling with a large family of 7, including our 18 month old, can be arduous but when the airline changes your flight time from landing at 9:30 pm to landing after midnight, this becomes much more difficult. When our 18 month old was predictably over tired and fussy, my wife and I tried to move to an open row so we can console her more effectively. The flight attendent rebuked us and said we could not sit in an exit row. We were not planning on sitting there for more than a few minutes but just to have space to console our screaming 18 month old. Spirit did not allow for a family friendly trip. Likely will be choosing a different airline next time.
Frontier
5.8
Fair
3,143 reviews
Spirit Airlines
6.3
Okay
8,087 reviews

Comfort

5.9

Entertainment

5.0

Boarding

6.6

Food

5.1

Overall

6.3

Crew

7.0

Reviews

1 / 20
2.0
Mediocre

Anonymous,Apr 2025

PNS - MCO

Bad experience. Unhappy with the changing of flight times and one particular flight attendant (Bartholomew) on our flight from Orlando to Detroit. Traveling with a large family of 7, including our 18 month old, can be arduous but when the airline changes your flight time from landing at 9:30 pm to landing after midnight, this becomes much more difficult. When our 18 month old was predictably over tired and fussy, my wife and I tried to move to an open row so we can console her more effectively. The flight attendent rebuked us and said we could not sit in an exit row. We were not planning on sitting there for more than a few minutes but just to have space to console our screaming 18 month old. Spirit did not allow for a family friendly trip. Likely will be choosing a different airline next time.

Related info for your journey

Find useful and relevant information for your journey from Trenton to Key Largo. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Trenton to Key Largo?

    Most people fly from Trenton-Mercer (TTN) if they book a flight from Trenton to Key Largo. On average, Trenton-Mercer has 0 outbound flights to Key Largo per day from 2 airlines. Trenton-Mercer is conveniently located just 4.8 mi from Trenton’s city center.

  • How long is the flight from Trenton, New Jersey to Key Largo?

    Airlines like Frontier fly from Trenton, New Jersey to Key Largo in about 19h 08m. The time it takes to get you to your destination can typically vary by up to . There are 1048 mi between Trenton, New Jersey and Key Largo.

  • Can I find deals for flights from Trenton to Key Largo that include hotel bookings?

    Yes. In addition to deals on Trenton to Key Largo flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Trenton to Key Largo?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Trenton to Key Largo.

  • Can I find deals for business class flights from Trenton to Key Largo?

    Yes. Cheapflights offers flight deals from Trenton to Key Largo by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Trenton, New Jersey to Key Largo?

    Currently, December is the cheapest month in which you can book a flight from Trenton, New Jersey to Key Largo (average of $26). Flying from Trenton, New Jersey to Key Largo in July is currently the most expensive (average of $85). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Top 2 airlines flying from Trenton to Key Largo

Discover the top 2 airlines that operate flights from Trenton to Key Largo. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated October 10, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$44Average$195FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$77Average$141FlexibilityNo cancel feeOn-time65%

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