
Trenton–Mercer Airport, formerly known as Mercer County Airport, is a small airport located in Ewing Township, Mercer County, New Jersey. The airport primarily serves general aviation but is also used for commercial flights. Over the years, Trenton–Mercer Airport has been served by various commercial airlines, including Allegheny Commuter, USAir Express, Eastwind Airlines, Shuttle America, Comair, Big Sky Airlines, Boston-Maine Airways, Streamline Airlines, Allegiant Air, and Frontier Airlines. As of 2018, Frontier Airlines was the only commercial tenant offering direct flights to destinations across the United States.
| Characteristics | Values |
|---|---|
| Airport name | Trenton–Mercer Airport |
| Airport code | TTN |
| Location | Ewing Township, Mercer County, New Jersey, US |
| Distance from Trenton | 4 miles northwest of Trenton |
| Passenger numbers (2022-2023) | 601,000 |
| Average daily aircraft operations | 308 |
| Airlines | Allegheny Commuter, USAir Express, Eastwind Airlines, Shuttle America, Comair, Big Sky Airlines, Boston-Maine Airways, Streamline Airlines, Allegiant Air, Frontier Airlines |
| Destinations | Chicago, Baltimore, Washington, Florida, North Carolina, Connecticut, Massachusetts, New York, Delaware, Atlanta, Boston, Philadelphia, Orlando, Raleigh, Charlotte, Tampa |
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What You'll Learn

Airlines that service Trenton–Mercer Airport
Trenton–Mercer Airport (IATA: TTN, ICAO: KTTN, FAA LID: TTN) is a small, county-owned, joint civil–military, public airport located in Ewing Township, Mercer County, New Jersey, United States. The airport primarily serves general aviation but is also used for commercial flights. It has become a popular alternative for passengers looking to avoid larger, more congested airports nearby.
Trenton–Mercer Airport is currently served by Frontier Airlines, which offers direct flights to various destinations across the United States. Frontier Airlines operates flights to and from destinations such as Orlando International, Raleigh-Durham International, Charlotte-Douglas International, and Tampa International. The airline provides affordable travel options, with prices as low as $47 for a round trip to Charlotte-Douglas International Airport.
Historically, several other airlines have serviced the Trenton–Mercer Airport. Allegheny Commuter was the only airline serving Trenton in 1976, operating small commuter turboprops with nonstops from Newark and Philadelphia. In the late 1980s, USAir Express was the sole airline serving Trenton, offering nonstop flights from Baltimore and Washington Reagan National Airport. From 1998 to 2003, Shuttle America provided a scheduled business commuter service to several states, including Connecticut, Massachusetts, and New York. In 2006 and 2007, Comair operated as Delta Connection, flying to Atlanta and Boston from Trenton using regional jet aircraft. Boston-Maine Airways also operated the Pan Am Clipper Connection between Trenton–Mercer Airport and Hanscom Field in Bedford, Massachusetts, from 2000 until 2008. Streamline Airlines briefly recommenced this route in 2011 but ceased operations in 2012 due to financial losses.
In addition to the commercial airlines mentioned, Trenton–Mercer Airport also accommodates private flights. Surf Air offers private jet charter services from the airport, with charter flights starting at $825 per hour.
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Allegheny Commuter
Trenton–Mercer Airport, formerly known as Mercer County Airport, is a county-owned airport located in Mercer County, New Jersey. In 1976, the Official Airline Guide (OAG) stated that the only airline serving Trenton–Mercer Airport was Allegheny Commuter. Allegheny Commuter operated small Nord 262 commuter turboprops with nonstops from Newark and Philadelphia. They also offered direct one-stop flights from Washington National Airport, with all services operated on behalf of Allegheny on a code-sharing basis.
Allegheny Airlines was the first airline to have a network of affiliated regional airlines, with the Allegheny Commuter system beginning in 1967 with Henson Airlines. Allegheny Airlines expanded its network rapidly, adding new destinations like Detroit, Boston, La Guardia, Toronto, and many others over the years. In 1965, Allegheny announced that it would add the Douglas DC-9-10 jet aircraft to its fleet, with other jets like the Vistajet (McDonnell Douglas DC-9-30) and Boeing 727s being added later.
In 1979, Allegheny Airlines changed its name to USAir, but the Allegheny name was retained for its commuter service until 1989 when it became USAir Express. Allegheny Commuter played a significant role in the early years of Trenton–Mercer Airport, providing essential connections to nearby cities like Newark, Philadelphia, and Washington National Airport.
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USAir Express
Trenton–Mercer Airport, formerly known as Mercer County Airport, is located in Ewing Township, Mercer County, New Jersey. It is a county-owned, joint civil–military, public airport situated four miles northwest of Trenton.
During this period, USAir Express played a crucial role in connecting Trenton–Mercer Airport with other destinations in the region. Passengers travelling from Trenton could conveniently reach Baltimore and Washington D.C. without having to drive long distances or connect through multiple flights. The use of small commuter aircraft suited the airport's short runways and provided a comfortable travel experience for those short-haul trips.
However, by the mid-1990s, Eastwind Airlines entered the scene at Trenton–Mercer Airport, offering flights to Florida and North Carolina, as well as several airports in Massachusetts, New York, and Pennsylvania. This introduction of additional airline service provided competition for USAir Express and presented travellers with more choices for their journeys.
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Eastwind Airlines
In the mid-to-late 1990s, Eastwind Airlines operated a hub out of Trenton to Florida and North Carolina, as well as airports in Massachusetts, New York, and Pennsylvania. The airline also flew from Philadelphia for a short time. This was due to the short runway at Trenton-Mercer Airport. Eastwind Airlines was one of the few airlines to operate scheduled jet services from Trenton-Mercer Airport's short runways, using Boeing 737-200 and 737-700 aircraft.
At the height of its operations in 1998, Eastwind Airlines operated a fleet of three Boeing 737-200s and two Boeing 737-700s. Throughout its history, the airline owned a total of five first-generation 737-200s, two of which were sold for scrap in 1997.
On June 9, 1996, an Eastwind Airlines Flight 517, a Boeing 737-2H5, experienced a loss of rudder control while approaching Richmond from Trenton. There was one minor injury to a flight attendant, but no damage to the plane. The crew of the plane, travelling at an airspeed of about 250 knots and at 4,000 feet MSL, experienced unexpected movement of the rudder, causing the plane to roll to the right. They applied opposite rudder pressure to prevent the plane from rolling over. However, the plane rolled to the right again while the crew was performing the emergency checklist. Thirty seconds later, the plane righted itself, and the crew declared an emergency, landing safely in Richmond. This incident helped solve two other unexplained accidents: United Airlines Flight 585 and USAir Flight 427.
By 1999, Eastwind Airlines was facing significant financial difficulties and performance issues, leading to a high number of customer complaints filed with the FAA. The airline's financial troubles were exacerbated by the purchase of two new Boeing 737-700 aircraft in 1997. In July 1999, Eastwind terminated several senior managers, including its CEO.
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Frontier Airlines
Trenton–Mercer Airport, formerly known as Mercer County Airport, is a small airport located in Ewing Township, Mercer County, New Jersey. It is situated near the state capital, Trenton, and serves the central New Jersey region. The airport primarily serves general aviation and is also used for commercial flights.
Trenton–Mercer Airport is a convenient alternative to larger, more congested airports in the region, such as Newark Liberty International Airport, Philadelphia International Airport, and John F. Kennedy International Airport. It is known for its calm atmosphere and simple-to-navigate terminal.
When flying from Trenton–Mercer Airport, it is recommended to arrive early, typically two hours before a domestic flight and three hours before an international flight. This allows sufficient time for parking, baggage drop-off, and any necessary travel arrangements.
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Frequently asked questions
Mercer County Airport, also known as Trenton–Mercer Airport, is serviced by Frontier Airlines, offering direct flights to various destinations across the United States.
Several other airlines have serviced the airport in the past, including:
- Allegheny Commuter
- United
- USAir Express
- Eastwind Airlines
- Shuttle America
- Comair
- Big Sky Airlines
- Boston-Maine Airways
- Streamline Airlines
- Allegiant Air
The airport is located in Ewing Township, Mercer County, New Jersey, near the state capital, Trenton.
The airport is surrounded by several points of interest, including Grounds For Sculpture, a 42-acre sculpture park and museum; the Old Barracks Museum, offering a glimpse into colonial and revolutionary war history; and the New Jersey State Museum, featuring exhibits on natural history, archaeology, and cultural heritage.
The airport is considered relatively small compared to major airports in the region, such as Newark Liberty International Airport, Philadelphia International Airport, and John F. Kennedy International Airport. However, its activity levels can vary depending on factors such as the time of year and day of the week. According to the U.S. Department of Transportation, approximately 601,000 passengers arrived or departed at the airport in the 12 months ending in July 2023.











































