$86 Cheap Flights from Pittsburgh (PIT) to Trenton (TTN)

View $86 flight on Mon, Jan 5, 2026Opens in a new window

Popular airlines from Pittsburgh Intl. Airport (PIT) to Trenton–Mercer Airport (TTN)

Cheap Flights from Pittsburgh to Trenton (PIT-TTN)

Prices were available within the past 7 days and start at $86 for one-way flights and $172 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Mon, Mar 9 - Thu, Mar 12
PIT
Pittsburgh
TTN
Trenton
$172 Roundtrip, found 2 days ago
$172
Roundtrip
found 2 days ago
Select Frontier Airlines flight, departing Mon, Mar 9 from Pittsburgh to Trenton, returning Thu, Mar 12, priced at $172 found 2 days ago
Frontier Airlines
Mon, Dec 22 - Wed, Dec 31
PIT
Pittsburgh
TTN
Trenton
$221 Roundtrip, just found
$221
Roundtrip
just found
Select Frontier Airlines flight, departing Mon, Dec 22 from Pittsburgh to Trenton, returning Wed, Dec 31, priced at $221 just found
Frontier Airlines
Sat, Mar 7 - Thu, Mar 12
PIT
Pittsburgh
TTN
Trenton
$223 Roundtrip, found 2 days ago
$223
Roundtrip
found 2 days ago
Select Frontier Airlines flight, departing Sat, Mar 7 from Pittsburgh to Trenton, returning Thu, Mar 12, priced at $223 found 2 days ago
American Airlines
Sat, Jan 17 - Tue, Jan 20
PIT
Pittsburgh
TTN
Trenton
$228 Roundtrip, found 3 hours ago
$228
Roundtrip
found 3 hours ago
Select American Airlines flight, departing Sat, Jan 17 from Pittsburgh to Trenton, returning Tue, Jan 20, priced at $228 found 3 hours ago
Frontier Airlines
Sat, Mar 7 - Thu, Mar 12
PIT
Pittsburgh
TTN
Trenton
$252 Roundtrip, found 9 hours ago
$252
Roundtrip
found 9 hours ago
Select Frontier Airlines flight, departing Sat, Mar 7 from Pittsburgh to Trenton, returning Thu, Mar 12, priced at $252 found 9 hours ago
Frontier Airlines
Fri, Mar 6 - Thu, Mar 12
PIT
Pittsburgh
TTN
Trenton
$257 Roundtrip, found 9 hours ago
$257
Roundtrip
found 9 hours ago
Select Frontier Airlines flight, departing Fri, Mar 6 from Pittsburgh to Trenton, returning Thu, Mar 12, priced at $257 found 9 hours ago
Frontier Airlines
Sat, Mar 7 - Sun, Mar 8
PIT
Pittsburgh
TTN
Trenton
$258 Roundtrip, found 2 days ago
$258
Roundtrip
found 2 days ago
Select Frontier Airlines flight, departing Sat, Mar 7 from Pittsburgh to Trenton, returning Sun, Mar 8, priced at $258 found 2 days ago
Frontier Airlines
Fri, Mar 6 - Sun, Mar 8
PIT
Pittsburgh
TTN
Trenton
$282 Roundtrip, found 2 days ago
$282
Roundtrip
found 2 days ago
Select Frontier Airlines flight, departing Fri, Mar 6 from Pittsburgh to Trenton, returning Sun, Mar 8, priced at $282 found 2 days ago
American Airlines
Sat, Jan 17 - Tue, Jan 20
PIT
Pittsburgh
TTN
Trenton
$287 Roundtrip, found 3 hours ago
$287
Roundtrip
found 3 hours ago
Select American Airlines flight, departing Sat, Jan 17 from Pittsburgh to Trenton, returning Tue, Jan 20, priced at $287 found 3 hours ago
Frontier Airlines
Fri, Mar 6 - Sun, Mar 8
PIT
Pittsburgh
TTN
Trenton
$292 Roundtrip, found 1 hour ago
$292
Roundtrip
found 1 hour ago
Select Frontier Airlines flight, departing Fri, Mar 6 from Pittsburgh to Trenton, returning Sun, Mar 8, priced at $292 found 1 hour 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 $221
TTN
Mercer
CheapestClosest
Average driving time to city center10 min
Flights from $221
Flights from Pittsburgh (PIT) to Trenton (TTN)
Origin airport
Pittsburgh Intl.
Destination airport
Mercer
Airlines serving
American Airlines, Frontier Airlines
Roundtrip price
$172
Distance
286 mi

Pittsburgh to Trenton Flights

The cheapest times to fly from Pittsburgh 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 Pittsburgh to Trenton are during the month of March. You can find some of the cheapest flights from Pittsburgh to Trenton with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Pittsburgh to Trenton

Sunday is one of the best days to book for cheap flights from Pittsburgh 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 Pittsburgh 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 Pittsburgh to Trenton in 2026. You can also book with separate airlines for your outbound and return journeys, from $86 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 Pittsburgh 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 Pittsburgh 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.

 

Frequently asked questions

How much does a flight from Pittsburgh Intl. Airport (PIT) to Mercer Airport (TTN) cost?
Snag a cheap one-way flight from $86 or cheap return flight from $172 from Pittsburgh Intl. Airport (PIT) to Mercer Airport (TTN) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from Pittsburgh Intl. Airport (PIT) to Mercer Airport (TTN)?
Flying in March is a great way to save, as it's the cheapest month for flights between PIT and TTN. You'll typically find the lowest prices during off-peak months.
What is the cheapest airline that flies from Pittsburgh Intl. Airport (PIT) to Mercer Airport (TTN)?
To find the cheapest airline flying from PIT to TTN, use Expedia's filter tool. Customize your search based on your travel needs, such as preferred carriers and flight duration. You can then sort your results by "Price (lowest to highest)" to see the cheapest flights first.
How many flights per day from Pittsburgh Intl. Airport (PIT) to Mercer Airport (TTN)?
There aren't any daily direct flights from Pittsburgh Intl. Airport (PIT) to Mercer Airport (TTN). But you can choose flights with layovers. Filter your search results on Expedia to include one or two stops, and you'll be cruising above the clouds in no time at all.
What day of the week has the most flights from PIT to TTN?
Friday is generally the busiest day for flights, while Tuesday is often the quietest.* Just remember that flight schedules can change depending on a range of factors, such as the carrier and season.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Pittsburgh Intl. Airport (PIT) to Mercer Airport (TTN)?
To avoid potential delays on the Pittsburgh Intl. Airport (PIT) to Mercer Airport (TTN) route, aim to travel before 3 PM. Flights after this time have a 22% higher chance of being canceled.**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 Pittsburgh Intl. Airport (PIT)?
Book a direct flight from Pittsburgh Intl. Airport (PIT) to Trenton and arrive at one of these airports:

  • Liberty Intl. Airport (EWR)
  • LaGuardia Airport (LGA)
  • Philadelphia Intl. Airport (PHL)

Is it cheaper to buy a plane ticket from Pittsburgh Intl. Airport (PIT) to Mercer Airport (TTN) last-minute?
Holding off until just before your trip to book your flight from PIT to TTN generally means paying more. While you may find some last-minute discounts, they're not always guaranteed. Be flexible with your itinerary to boost your chances of snagging a bargain.
Is it cheaper to book a PIT to TTN flight and hotel package?
You'll typically save money by booking a PIT to TTN flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it's simple to manage everything in one convenient place. After selecting your preferred accommodations and flights, consider adding extras including activities, tours and car rentals.
Can I cancel or change the date of my flight from Pittsburgh Intl. Airport (PIT) to Mercer Airport (TTN)?
You can usually cancel or reschedule your PIT to TTN flight. However, if it's been more than 24 hours since booking, additional charges may apply. Check your airline's policies in your itinerary to see what changes are allowed and if any costs are involved. You'll also find more information on our Customer Service portal.

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*Available to One Key members.