$115+ 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 5/7. Fares are subject to change and may not be available on all flights or dates of travel.
TTN — MIA
May 9 — May 161
Round-trip
1 adult, Economy
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Cheapest
Best
One-way
Cheapest flights from Trenton to Key LargoExplore 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 April 9, 2026.
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 April 9, 2026.
This eDestinos deal was found by Cheapflights users on 4/9. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/610:32 am
TTN
- MIA
2 stops12h 31m
Frontier
Mon 8/108:10 am
MIA
- TTN
2 stops25h 37m
Frontier
Deal found 4/9![Frontier logo]()
$352
Best flights from Trenton to Key LargoDiscover carefully curated flight deals from Trenton to Key Largo that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 9, 2026.
Discover carefully curated flight deals from Trenton to Key Largo that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 9, 2026.
This eDestinos deal was found by Cheapflights users on 4/9. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/610:32 am
TTN
- MIA
2 stops12h 31m
Frontier
Mon 8/108:10 am
MIA
- TTN
2 stops25h 37m
Frontier
Deal found 4/9![Frontier logo]()
$352
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 April 9, 2026.
Search for one-way flight options from Trenton to Key Largo. Find affordable one-way fares based on user searches. Data last updated April 9, 2026.
This Kiwi.com deal was found by Cheapflights users on 4/6. 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 5/77:15 pm
TTN
- MIA
2 stops48h 27m
Multiple Airlines
Deal found 4/6![Multiple Airlines logo]()
$115
This Kiwi.com deal was found by Cheapflights users on 4/9. 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.
Sun 5/177:15 pm
TTN
- MIA
2 stops18h 05m
Multiple Airlines
Deal found 4/9![Multiple Airlines logo]()
$116
This Kiwi.com deal was found by Cheapflights users on 4/5. 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 5/107:15 pm
TTN
- MIA
2 stops29h 29m
Multiple Airlines
Deal found 4/5![Multiple Airlines logo]()
$121
This Kiwi.com deal was found by Cheapflights users on 4/5. 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 5/2411:50 am
TTN
- MIA
2 stops28h 37m
Multiple Airlines
Deal found 4/5![Multiple Airlines logo]()
$128
This Kiwi.com deal was found by Cheapflights users on 4/6. 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 5/1210:27 am
TTN
- MIA
2 stops30h 00m
Multiple Airlines
Deal found 4/6![Multiple Airlines logo]()
$142
This Kiwi.com deal was found by Cheapflights users on 4/9. 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 4/167:15 pm
TTN
- MIA
2 stops27h 19m
Multiple Airlines
Deal found 4/9![Multiple Airlines logo]()
$150
This Kiwi.com deal was found by Cheapflights users on 4/8. 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 5/234:29 pm
TTN
- MIA
2 stops41h 58m
Frontier
Deal found 4/8![Frontier logo]()
$170
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 April 9, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $352 (eDestinos) |
One-way from | $115 (Kiwi.com) |
Popular in | November |
Cheapest in | October |
Average price | $172 |
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 April 9, 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 round-trip
Quickest round-trip
TrentonMiami
TTN - MIA
TTNMIA
Trenton-Mercer
Thu 8/6
10:32 am-11:03 pm
2 stops12h 31m
Miami
Mon 8/10
8:10 am-9:47 am
2 stops25h 37m
$352
Cheapest one-way
Quickest one-way
TrentonMiami
TTN - MIA
TTNMIA
Trenton-Mercer
Sun 5/17
7:15 pm-1:20 pm
2 stops18h 05m
$116
TrentonMiami
TTN - MIA
TTNMIA
Trenton-Mercer
Sun 5/10
7:15 pm-12:44 am
2 stops29h 29m
$121
TrentonMiami
TTN - MIA
TTNMIA
Trenton-Mercer
Sun 5/24
11:50 am-4:27 pm
2 stops28h 37m
$128
TrentonMiami
TTN - MIA
TTNMIA
Trenton-Mercer
Tue 5/12
10:27 am-4:27 pm
2 stops30h 00m
$142
TrentonMiami
TTN - MIA
TTNMIA
Trenton-Mercer
Thu 4/16
7:15 pm-10:34 pm
2 stops27h 19m
$150
TrentonMiami
TTN - MIA
TTNMIA
Trenton-Mercer
Thu 5/7
7:15 pm-9:52 pm
3 stops26h 37m
$158
TrentonMiami
TTN - MIA
TTNMIA
Trenton-Mercer
Sat 5/23
4:29 pm-10:27 am
2 stops41h 58m
$170
TrentonMiami
TTN - MIA
TTNMIA
Trenton-Mercer
Sat 5/23
4:29 pm-2:54 pm
3 stops22h 25m
$233
Sorted 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
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 June is currently the most expensive (average of $83). 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 April 9, 2026.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Trenton, New Jersey to Key Largo as you normally would.
How much does it cost to fly round-trip from Trenton, New Jersey to Key Largo?
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
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Trenton and Key Largo flights
Browse other Trenton and Key Largo flight options. Last updated on April 9, 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 April 9, 2026.
Popular flight searches
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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 2,558,603 searches. Data last updated April 9, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$24 | Average$117 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$78 | Average$130 | FlexibilityNo cancel fee | On-time88% | |
| Cheapest$79 | Average$200 | FlexibilityNo cancel fee | On-time62% |