$230 Cheap Flights from Harrisburg (MDT) to Trenton (TTN)

View $230 flight on Wed, Dec 3, 2025Opens in a new window

Popular airlines from Harrisburg Intl. Airport (MDT) to Trenton–Mercer Airport (TTN)

Cheap Flights from Harrisburg to Trenton (MDT-TTN)

Prices were available within the past 7 days and start at $230 for one-way flights and $374 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Fri, Oct 31 - Tue, Nov 4
MDT
Harrisburg
TTN
Trenton
$374 Roundtrip, found 5 days ago
$374
Roundtrip
found 5 days ago
Select American Airlines flight, departing Fri, Oct 31 from Harrisburg to Trenton, returning Tue, Nov 4, priced at $374 found 5 days ago
American Airlines
Fri, Oct 31 - Sun, Nov 2
MDT
Harrisburg
TTN
Trenton
$394 Roundtrip, found 9 hours ago
$394
Roundtrip
found 9 hours ago
Select American Airlines flight, departing Fri, Oct 31 from Harrisburg to Trenton, returning Sun, Nov 2, priced at $394 found 9 hours ago
American Airlines
Fri, Apr 24 - Fri, May 8
MDT
Harrisburg
TTN
Trenton
$413 Roundtrip, found 4 hours ago
$413
Roundtrip
found 4 hours ago
Select American Airlines flight, departing Fri, Apr 24 from Harrisburg to Trenton, returning Fri, May 8, priced at $413 found 4 hours ago
American Airlines
Tue, Sep 30 - Sat, Oct 4
MDT
Harrisburg
TTN
Trenton
$427 Roundtrip, just found
$427
Roundtrip
just found
Select American Airlines flight, departing Tue, Sep 30 from Harrisburg to Trenton, returning Sat, Oct 4, priced at $427 just found
American Airlines
Fri, Oct 31 - Tue, Nov 4
MDT
Harrisburg
TTN
Trenton
$430 Roundtrip, found 5 days ago
$430
Roundtrip
found 5 days ago
Select American Airlines flight, departing Fri, Oct 31 from Harrisburg to Trenton, returning Tue, Nov 4, priced at $430 found 5 days ago
American Airlines
Thu, Jan 1 - Sun, Jan 4
MDT
Harrisburg
TTN
Trenton
$433 Roundtrip, found 1 hour ago
$433
Roundtrip
found 1 hour ago
Select American Airlines flight, departing Thu, Jan 1 from Harrisburg to Trenton, returning Sun, Jan 4, priced at $433 found 1 hour ago
American Airlines
Tue, Sep 30 - Sat, Oct 4
MDT
Harrisburg
TTN
Trenton
$437 Roundtrip, just found
$437
Roundtrip
just found
Select American Airlines flight, departing Tue, Sep 30 from Harrisburg to Trenton, returning Sat, Oct 4, priced at $437 just found
American Airlines
Fri, Nov 7 - Wed, Nov 19
MDT
Harrisburg
TTN
Trenton
$450 Roundtrip, found 1 day ago
$450
Roundtrip
found 1 day ago
Select American Airlines flight, departing Fri, Nov 7 from Harrisburg to Trenton, returning Wed, Nov 19, priced at $450 found 1 day ago
American Airlines
Fri, Oct 31 - Sun, Nov 2
MDT
Harrisburg
TTN
Trenton
$452 Roundtrip, found 9 hours ago
$452
Roundtrip
found 9 hours ago
Select American Airlines flight, departing Fri, Oct 31 from Harrisburg to Trenton, returning Sun, Nov 2, priced at $452 found 9 hours ago
American Airlines
Fri, Apr 24 - Fri, May 8
MDT
Harrisburg
TTN
Trenton
$472 Roundtrip, found 4 hours ago
$472
Roundtrip
found 4 hours ago
Select American Airlines flight, departing Fri, Apr 24 from Harrisburg to Trenton, returning Fri, May 8, priced at $472 found 4 hours ago

Alternative airports near Trenton

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Mercer TTN. Cheapest and Closest option available. Average driving time to city center is 10 minutes. Flights from $427
TTN
Mercer
CheapestClosest
Average driving time to city center10 min
Flights from $427

Frequently asked questions

How much does a flight from Harrisburg Intl. Airport (MDT) to Mercer Airport (TTN) cost?
Grab a cheap one-way flight from $230 or cheap return flight from $374 from Harrisburg Intl. Airport (MDT) to Mercer Airport (TTN) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from Harrisburg Intl. Airport (MDT) to Mercer Airport (TTN)?
The cheapest month to fly from MDT to TTN is October, when demand is low. Off-peak season is generally when better flight deals are available between these airports.
What is the cheapest airline that flies from Harrisburg Intl. Airport (MDT) to Mercer Airport (TTN)?
To find the cheapest airline flying from MDT to TTN, use Expedia's filter tool. Customize your search based on your travel style, such as preferred carriers and flight duration. You can then sort your results by "Price (lowest to highest)" to see the cheapest fares upfront.
How many flights per day from Harrisburg Intl. Airport (MDT) to Mercer Airport (TTN)?
You'll need to take a flight with a layover if you're traveling from Harrisburg Intl. Airport (MDT) to Mercer Airport (TTN). Direct flights don't operate daily on this route. However, simply filter your search to include one or two stops to discover the best option for your trip.
What day of the week has the most flights from MDT to TTN?
Usually you'll find the widest variety of flight choices on a Friday. Tuesdays tend to be the quietest.* But this can change depending on the time of year, airline and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Harrisburg Intl. Airport (MDT) to Mercer Airport (TTN)?
To land at Mercer Airport (TTN) without delays, opt for a flight that leaves from Harrisburg Intl. Airport (MDT) before 3 PM. The chance of cancellations is 22% higher, on average, for departures after this hour.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports do you fly into for Trenton from Harrisburg Intl. Airport (MDT)?
Explore your flight options from Harrisburg Intl. Airport (MDT) to Philadelphia Intl. Airport (PHL). This is the only airport in Trenton you can jet into if you're taking a direct flight.
Is it cheaper to buy a plane ticket from Harrisburg Intl. Airport (MDT) to Mercer Airport (TTN) last-minute?
Last-minute bookings from MDT to TTN are generally more expensive. To secure the lowest rates, start searching for flights early. That said, if you're flexible with your travel dates, you may score a cheap ticket right before you leave.
Is it cheaper to book a MDT to TTN flight and hotel package?
Compared with arranging flights and hotels separately, booking a MDT to TTN flight and hotel package with Expedia could result in significant savings. Better yet, managing everything in one place will take the hassle out of travel planning. Simply secure your flights and select from our wide range of stays, then personalize your trip with extras like activities, tours and car rentals.
Can I cancel or change the date of my flight from Harrisburg Intl. Airport (MDT) to Mercer Airport (TTN)?
In most instances, you can cancel or modify your MDT to TTN flight. However, additional charges may apply, especially if you booked over 24 hours ago. Check your itinerary for the airline's rules and fees on flight changes, or if you want further information, visit our Customer Service portal.

Travel information

Travel information

Origin airport
Harrisburg Intl.
Destination airport
Mercer
Airlines serving
American Airlines
Roundtrip price
$374
Distance
102 mi

Book with confidence

Book with confidence

Harrisburg to Trenton Flights

The cheapest times to fly from Harrisburg to Trenton

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Harrisburg to Trenton are during the month of October. You can find some of the cheapest flights from Harrisburg to Trenton with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Harrisburg to Trenton

Sunday is one of the best days to book for cheap flights from Harrisburg to Trenton: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Harrisburg to Trenton

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Harrisburg to Trenton in 2025. You can also book with separate airlines for your outbound and return journeys, from $230 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Harrisburg to Trenton flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Harrisburg to Trenton airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Harrisburg to Trenton Flights

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*Available to One Key members.