$142 Cheap Frontier Airlines flights Jacksonville (JAX) to Trenton (TTN)

View $142 flight on Sun, Jul 13, 2025Opens in a new window

$142 Cheap Frontier Airlines flights Jacksonville (JAX) to Trenton (TTN)

Prices were available within the past 7 days and start at $142 for one-way flights and $273 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Thu, Aug 14 - Sun, Aug 31
JAX
Jacksonville
TTN
Trenton
$273 Roundtrip, found 6 days ago
$273
Roundtrip
found 6 days ago
Select Frontier Airlines flight, departing Thu, Aug 14 from Jacksonville to Trenton, returning Sun, Aug 31, priced at $273 found 6 days ago
Frontier Airlines
Thu, Oct 23 - Thu, Oct 30
JAX
Jacksonville
TTN
Trenton
$301 Roundtrip, found 2 days ago
$301
Roundtrip
found 2 days ago
Select Frontier Airlines flight, departing Thu, Oct 23 from Jacksonville to Trenton, returning Thu, Oct 30, priced at $301 found 2 days ago
Frontier Airlines
Thu, Aug 7 - Sun, Aug 24
JAX
Jacksonville
TTN
Trenton
$321 Roundtrip, found 3 days ago
$321
Roundtrip
found 3 days ago
Select Frontier Airlines flight, departing Thu, Aug 7 from Jacksonville to Trenton, returning Sun, Aug 24, priced at $321 found 3 days ago
Frontier Airlines
Thu, Oct 16 - Sun, Nov 2
JAX
Jacksonville
TTN
Trenton
$341 Roundtrip, found 4 days ago
$341
Roundtrip
found 4 days ago
Select Frontier Airlines flight, departing Thu, Oct 16 from Jacksonville to Trenton, returning Sun, Nov 2, priced at $341 found 4 days ago
Frontier Airlines
Sun, Aug 17 - Sun, Aug 24
JAX
Jacksonville
TTN
Trenton
$345 Roundtrip, found 3 days ago
$345
Roundtrip
found 3 days ago
Select Frontier Airlines flight, departing Sun, Aug 17 from Jacksonville to Trenton, returning Sun, Aug 24, priced at $345 found 3 days ago
Frontier Airlines
Sun, Oct 26 - Sun, Nov 9
JAX
Jacksonville
TTN
Trenton
$361 Roundtrip, found 4 days ago
$361
Roundtrip
found 4 days ago
Select Frontier Airlines flight, departing Sun, Oct 26 from Jacksonville to Trenton, returning Sun, Nov 9, priced at $361 found 4 days ago
Flights from Jacksonville (JAX) to Trenton (TTN)
Origin airport
Jacksonville Intl.
Destination airport
Mercer
Airlines serving
Frontier Airlines
Popular airline
Frontier Airlines
Distance
778 mi

Frequently asked questions

How much is a Frontier Airlines flight from Jacksonville Intl. Airport (JAX) to Mercer Airport (TTN)?
Finding cheap one-way Frontier Airlines flights from JAX to TTN from $142 on Expedia couldn't be simpler --- just filter by "Price (lowest to highest)." Alternatively, check out our budget-friendly round-trip fares from $273 for your next exciting adventure.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.
What is the cheapest month to fly from JAX to TTN with Frontier Airlines?
Frontier Airlines flights to Trenton are generally cheaper in the quieter months of February and January. Whether you need a one-way or round-trip ticket, you could score a better deal then.
What is the cheapest time to book flights from Jacksonville Intl. Airport (JAX) to Mercer Airport (TTN) with Frontier Airlines?
Look for cheap Frontier Airlines flights from Jacksonville Intl. Airport (JAX) to Mercer Airport (TTN) one to three months ahead of your day of departure. Travelers who book domestic flights 34 to 86 days in advance can save 25% compared to those who book just 6 to 12 days ahead. No matter the fare class and journey, the best day of the week to book a domestic flight is usually Sunday and the most expensive day is typically Monday. Passengers who book on a Sunday can save 6% on average compared to those who book on a Monday.**Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC's global airline sales database.
Does Frontier Airlines fly nonstop from Jacksonville Intl. Airport (JAX) to Mercer Airport (TTN)?
To figure out if there's a direct trip from JAX to TTN with Frontier Airlines or any other airlines, use our "Nonstop" filter when looking for flights.
What is the earliest Frontier Airlines flight from JAX to TTN?
Find Frontier Airlines's earliest flights from JAX to TTN by selecting our "Early Morning" and "Morning" filters. Not only will you arrive sooner, early departures also experience 20% fewer cancellations.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports does Frontier Airlines fly into in Trenton?
Board a Frontier Airlines flight from Jacksonville Intl. Airport (JAX) to Trenton, and you'll likely arrive at Mercer Airport (TTN). This is the airline's primary hub in this destination.
Why fly with Frontier Airlines from JAX to TTN?
With a rewarding loyalty program, Frontier Airlines is a top pick for many passengers heading from JAX to TTN. Plus, as a Frontier Miles and One Key™ member booking through Expedia, you can earn OneKeyCash™* on eligible flights along with your airline miles.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.
Can I change or cancel my Frontier Airlines flight from Jacksonville Intl. Airport (JAX) to Mercer Airport (TTN)?
Depending on the type of fare you purchased, a fee is typically charged if you cancel or reschedule your flight more than 24 hours after it's been confirmed. To secure plane tickets with more flexibility, select our "Changes included" and "No cancel fee" boxes while looking for flights. For more information on canceling or changing your reservation, visit "Trips," select your flight and tick "Manage Booking."

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*Available to One Key members.