$102+ 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 11/16. Fares are subject to change and may not be available on all flights or dates of travel.
TTN — MIA
Sep 26 — Oct 31
Round-trip
1 adult, Economy
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1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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One-way
One-way flights from Trenton to Key LargoSearch for one-way flight options from Trenton to Key Largo. Find affordable one-way fares based on user searches. Data last updated August 27, 2026.
Search for one-way flight options from Trenton to Key Largo. Find affordable one-way fares based on user searches. Data last updated August 27, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/25. 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 11/168:01 pm -
2 stops38h 28m
Deal found 8/25![Frontier logo]()
$102
This Kiwi.com deal was found by Cheapflights users on 8/25. 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 9/2012:13 pm -
2 stops32h 20m
Deal found 8/25![Multiple Airlines logo]()
$146
This Kiwi.com deal was found by Cheapflights users on 8/22. 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 9/197:39 pm -
2 stops28h 30m
Deal found 8/22![Frontier logo]()
$152
This Kiwi.com deal was found by Cheapflights users on 8/23. 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 9/812:49 pm -
2 stops10h 16m
Deal found 8/23![Frontier logo]()
$156
This Kiwi.com deal was found by Cheapflights users on 8/23. 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 9/76:30 am -
2 stops40h 35m
Deal found 8/23![Frontier logo]()
$159
This Kiwi.com deal was found by Cheapflights users on 8/23. 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 9/107:39 pm -
2 stops38h 51m
Deal found 8/23![Frontier logo]()
$164
This Kiwi.com deal was found by Cheapflights users on 8/23. 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 9/412:49 pm -
2 stops34h 16m
Deal found 8/23![Frontier logo]()
$165
This Kiwi.com deal was found by Cheapflights users on 8/23. 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 9/66:30 am -
2 stops33h 43m
Deal found 8/23![Frontier logo]()
$197
This Kiwi.com deal was found by Cheapflights users on 8/25. 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.
Wed 11/188:34 pm -
2 stops24h 45m
Deal found 8/25![Multiple Airlines logo]()
$205
This Kiwi.com deal was found by Cheapflights users on 8/23. 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 9/35:18 pm -
2 stops16h 57m
Deal found 8/23![Frontier logo]()
$216
This Kiwi.com deal was found by Cheapflights users on 8/26. 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.
Wed 9/26:30 pm -
2 stops13h 59m
Deal found 8/26![Frontier logo]()
$239
Find 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 August 27, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Popular in | August |
Cheapest in | October |
Average price | $364 |
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 7,457,451 searches. Data last updated August 27, 2026.
Use the filters below to find and compare flights from Trenton to Key Largo that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest one-way
TrentonMiami
TTN Trenton-Mercer - MIA Miami
TTNMIA
Trenton-Mercer
Mon 11/16
8:01 pm-10:29 am
2 stops38h 28m
$102
TrentonMiami
TTN Trenton-Mercer - MIA Miami
TTNMIA
Trenton-Mercer
Sat 9/19
7:39 pm-12:09 am
2 stops28h 30m
$152
TrentonMiami
TTN Trenton-Mercer - MIA Miami
TTNMIA
Trenton-Mercer
Fri 9/4
12:49 pm-11:05 pm
2 stops34h 16m
$165
Quickest one-way
TrentonMiami
TTN Trenton-Mercer - MIA Miami
TTNMIA
Trenton-Mercer
Wed 9/2
6:30 pm-8:29 am
2 stops13h 59m
$239
TrentonMiami
TTN Trenton-Mercer - MIA Miami
TTNMIA
Trenton-Mercer
Mon 8/31
5:18 pm-4:21 pm
2 stops23h 03m
$255
TrentonMiami
TTN Trenton-Mercer - MIA Miami
TTNMIA
Trenton-Mercer
Sun 9/20
7:39 pm-8:33 pm
3 stops24h 54m
$259
TrentonMiami
TTN Trenton-Mercer - MIA Miami
TTNMIA
Trenton-Mercer
Wed 11/18
8:34 pm-9:49 pm
3 stops25h 15m
$286
TrentonMiami
TTN Trenton-Mercer - MIA Miami
TTNMIA
Trenton-Mercer
Sat 9/19
7:39 pm-11:09 pm
3 stops27h 30m
$302
TrentonMiami
TTN Trenton-Mercer - MIA Miami
TTNMIA
Trenton-Mercer
Tue 9/8
5:18 pm-7:45 pm
3 stops26h 27m
$352
TrentonMiami
TTN Trenton-Mercer - MIA Miami
TTNMIA
Trenton-Mercer
Sun 9/6
6:30 am-4:52 am
3 stops22h 22m
$354
Showing 1-10 of 12 resultsSorted by cheapest first
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.
TTN-MIA
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
TTN-KE9
TTN-MIA
No data available for this route at this time. Please check back soon.
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 August 27, 2026.
Get a feel of what it's like to fly with 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.
Entertainment
4.2
Food
4.5
Boarding
5.9
Comfort
5.4
Overall
5.6
Crew
6.5
Reviews
1 / 20
8.0
ExcellentAnonymous,Jun 2025
TTN - TPA
Entertainment
4.2
Food
4.5
Boarding
5.9
Comfort
5.4
Overall
5.6
Crew
6.5
Reviews
1 / 20
8.0
ExcellentAnonymous,Jun 2025
TTN - TPA
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.
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Alternative routes for Trenton to Key Largo
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Complete your trip
Complete your trip to Key Largo by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Trenton to Key Largo by cabin class
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Trenton and Key Largo flights
Browse other Trenton and Key Largo flight options. Last updated on August 27, 2026.
Other flights from Trenton
Browse through other flights departing from Trenton. Flights are based on user searches made on Cheapflights and were last updated on August 27, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Trenton to Key Largo flights
Consider these flights traveling from Trenton to Key Largo.
Top 3 airlines flying from Trenton to Key Largo
Discover the top 3 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 7,457,451 searches. Data last updated August 27, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$78 | Average$117 | FlexibilityNo cancel fee | On-time88% | |
| Cheapest$80 | Average$199 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$286 | Average$343 | FlexibilityNo cancel fee | On-time71% |