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Key Largo

$116+ 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 2/26. Fares are subject to change and may not be available on all flights or dates of travel.
TTN — MIA
Feb 11 — Feb 181
Wed 2/11
Wed 2/18
1 adult, Economy
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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 January 12, 2026.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Popular in

May

Cheapest in

February

Average price

$189
Provider with most accurate pricing for New York (NYC)-Miami flight deals.
Search Deals
Provider most trusted by Cheapflights users for New York (NYC)-Miami flights.
Search Deals
Highest demand for flights based on searches. 35% potential increase in price ($126 potential increase over avg. RT price).
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Cheapest flight prices on average. 18% potential price decrease ($35 potential savings vs. average RT price).
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Average for round-trip flights in January 2026
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Find flight deals from Trenton to Key Largo

One-way flights from Trenton to Key Largo
Search for one-way flight options from Trenton to Key Largo. Find affordable one-way fares based on user searches. Data last updated January 12, 2026.

This Kiwi.com deal was found by Cheapflights users on 1/11. 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 3/197:15 pm
TTN
-
MIA
2 stops22h 38m
Multiple Airlines
Deal found 1/11$135
This Kiwi.com deal was found by Cheapflights users on 1/10. 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.
Tue 1/203:21 pm
TTN
-
MIA
2 stops56h 38m
Frontier
Deal found 1/10$136
This Kiwi.com deal was found by Cheapflights users on 1/11. 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 1/187:00 am
TTN
-
MIA
2 stops26h 10m
Multiple Airlines
Deal found 1/11$162
This Kiwi.com deal was found by Cheapflights users on 1/10. 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.
Tue 1/203:21 pm
TTN
-
MIA
3 stops32h 38m
Multiple Airlines
Deal found 1/10$189
This Kissandfly.com deal was found by Cheapflights users on 1/12. 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 Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/89:31 am
TTN
-
MIA
2 stops14h 43m
Frontier
Deal found 1/12$250
This Kiwi.com deal was found by Cheapflights users on 1/11. 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 2/1210:31 am
TTN
-
MIA
2 stops36h 58m
Frontier
Deal found 1/11$321
This Kiwi.com deal was found by Cheapflights users on 1/11. 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 2/1210:31 am
TTN
-
MIA
3 stops22h 39m
Multiple Airlines
Deal found 1/11$470
This Kiwi.com deal was found by Cheapflights users on 1/10. 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 2/131:52 pm
TTN
-
MIA
2 stops44h 36m
Frontier
Deal found 1/10$488
This Kiwi.com deal was found by Cheapflights users on 1/10. 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 2/131:52 pm
TTN
-
MIA
3 stops22h 24m
Multiple Airlines
Deal found 1/10$600

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 January 12, 2026.
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

Thu 2/26

7:15 pm-12:42 am

2 stops29h 27m

$116

TrentonMiami

TTN - MIA

TTNMIA

Trenton-Mercer

Sun 2/22

7:15 pm-12:42 am

2 stops29h 27m

$116

TrentonMiami

TTN - MIA

TTNMIA

Trenton-Mercer

Wed 2/25

8:00 am-12:16 pm

2 stops28h 16m

$119

TrentonMiami

TTN - MIA

TTNMIA

Trenton-Mercer

Thu 3/19

7:15 pm-5:53 pm

2 stops22h 38m

$135

TrentonMiami

TTN - MIA

TTNMIA

Trenton-Mercer

Tue 1/20

3:21 pm-11:59 pm

2 stops56h 38m

$136

TrentonMiami

TTN - MIA

TTNMIA

Trenton-Mercer

Tue 2/24

8:00 am-1:14 am

3 stops17h 14m

$145

TrentonMiami

TTN - MIA

TTNMIA

Trenton-Mercer

Sat 2/21

12:45 pm-12:16 pm

3 stops23h 31m

$149

TrentonMiami

TTN - MIA

TTNMIA

Trenton-Mercer

Sun 1/18

7:00 am-9:10 am

2 stops26h 10m

$162

TrentonMiami

TTN - MIA

TTNMIA

Trenton-Mercer

Mon 2/23

11:54 am-9:10 am

3 stops21h 16m

$179

TrentonMiami

TTN - MIA

TTNMIA

Trenton-Mercer

Tue 1/20

3:21 pm-11:59 pm

3 stops32h 38m

$189

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/12

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, January is the cheapest month in which you can book a flight from Trenton, New Jersey to Key Largo (average of $24). 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.

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 January 12, 2026.
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
8,302 reviews

Entertainment

4.9

Overall

6.3

Comfort

5.9

Crew

7.0

Food

5.1

Boarding

6.6

Reviews

1 / 20
2.0
Mediocre

Jose F,Dec 2025

SAT - MCO

5 hours delay, Flight change, no empathy from people at the counter
Spirit Airlines
6.3
Okay
8,302 reviews
Spirit Airlines
6.3
Okay
8,302 reviews

Entertainment

4.9

Overall

6.3

Comfort

5.9

Crew

7.0

Food

5.1

Boarding

6.6

Reviews

1 / 20
2.0
Mediocre

Jose F,Dec 2025

SAT - MCO

5 hours delay, Flight change, no empathy from people at the counter
Frontier
5.7
Fair
3,056 reviews
Spirit Airlines
6.3
Okay
8,302 reviews

Entertainment

4.9

Overall

6.3

Comfort

5.9

Crew

7.0

Food

5.1

Boarding

6.6

Reviews

1 / 20
2.0
Mediocre

Jose F,Dec 2025

SAT - MCO

5 hours delay, Flight change, no empathy from people at the counter

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.

  • 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, January is the cheapest month in which you can book a flight from Trenton, New Jersey to Key Largo (average of $24). 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 January 12, 2026.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$52Average$157FlexibilityNo cancel feeOn-time65%
FrontierCheapest$61Average$210FlexibilityNo cancel feeOn-time62%

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