
Trenton–Mercer Airport (IATA: TTN, ICAO: KTTN, FAA LID: TTN) is a small, county-owned, joint civil–military, public airport located four miles northwest of Trenton, New Jersey. The airport has seen a variety of airlines operate from its runways over the years, including Allegheny Commuter, United, USAir Express, Eastwind Airlines, Shuttle America, Comair, Big Sky Airlines, Boston-Maine Airways, and Streamline Airlines. As of 2025, Frontier Airlines is the only airline flying from Trenton, offering non-stop flights to destinations including Fort Lauderdale, Fort Myers, Atlanta, Orlando, Tampa, and West Palm Beach.
| Characteristics | Values |
|---|---|
| Airport Code | TTN |
| Location | Four miles northwest of Trenton in the West Trenton section of Ewing Township, Mercer County, New Jersey |
| Type | County-owned, joint civil–military, public airport |
| Number of Airlines | 1 |
| Airlines | Frontier Airlines |
| Number of Destinations | 5 |
| Destinations | Atlanta, Fort Myers, Orlando, Tampa, and West Palm Beach |
| Number of Passengers | 601,000 (301,000 arrivals and 300,000 departures) in the 12 months ending July 2023 |
| Average Daily Aircraft Operations | 308 |
| Ranking in New Jersey | Third-busiest airport |
| Terminal Size | 125,000 square feet |
| Parking | 2,900 spaces |
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What You'll Learn
- Frontier Airlines currently operates out of Trenton–Mercer Airport
- Allegheny Commuter was the only airline serving Trenton in 1976
- United Airlines flew direct from Chicago O'Hare Airport in 1984-86
- USAir Express was the only airline serving Trenton in 1989
- Streamline Airlines operated from Trenton–Mercer Airport in 2011-12

Frontier Airlines currently operates out of Trenton–Mercer Airport
Trenton–Mercer Airport is located four miles northwest of Trenton, New Jersey, and is known for its easy accessibility, affordable parking, and competitive fares. It is a county-owned, joint civil-military, public airport. The airport has seen significant growth in recent years, with plans for a new terminal and parking garage to accommodate increasing passenger traffic.
In the past, several other airlines have served Trenton–Mercer Airport. From 1998 to 2003, Shuttle America operated a scheduled business commuter service to various destinations in the northeastern United States. Comair, operating as Delta Connection, served the airport with flights to Atlanta and Boston in 2006 and 2007. Boston-Maine Airways also operated the Pan Am Clipper Connection between Trenton–Mercer Airport and Hanscom Field in Bedford, Massachusetts, from 2000 to 2008.
However, as of April 2018, Allegiant Air ended its jet service from Trenton–Mercer Airport, leaving Frontier Airlines as the airport's only commercial tenant. This makes Frontier Airlines the primary airline serving Trenton–Mercer Airport, providing convenient and affordable travel options for passengers travelling to and from the Trenton area.
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Allegheny Commuter was the only airline serving Trenton in 1976
Trenton–Mercer Airport is a county-owned, joint civil–military, public airport located four miles northwest of Trenton in the West Trenton section of Ewing Township, Mercer County, New Jersey. It is one of the oldest continuously operated airports in the United States, having been established in 1911 as Mercer County Airport. During World War II, the airport was taken over by the United States Army Air Corps for military training purposes and was returned to civilian control in 1946.
In 1976, the Official Airline Guide (OAG) listed Allegheny Commuter as the only airline serving Trenton. Allegheny Commuter operated small Nord 262 commuter turboprops with non-stop flights from Newark and Philadelphia, as well as direct one-stop flights from Washington National Airport. All flights were operated on behalf of Allegheny Airlines on a code-sharing basis. Allegheny Airlines, founded in 1939 as All American Aviation Company, was a local service carrier that operated primarily in the eastern United States. By 1976, Allegheny Airlines had expanded its network across the country, including destinations in Pennsylvania, New Jersey, Ohio, West Virginia, and beyond. The airline was an early adopter of jet aircraft, introducing its first jet, the Douglas DC-9-10, in 1966.
Allegheny Commuter, established in 1967, was Allegheny Airlines' network of affiliated regional airlines, which allowed for greater last-mile connectivity. Allegheny Commuter's partnership with Henson Airlines in 1967 is recognised as the aviation industry's first official code-share agreement. Allegheny Airlines' fleet included various aircraft types over the years, such as the Douglas DC-3, Martin 2-0-2, Convair 540, and Fairchild F-27J, named the "Vistaliner." The airline experienced several mergers, including with Lake Central Airlines in 1968 and Mohawk Airlines in 1972, further expanding its destinations.
By 1979, Allegheny Airlines had rebranded as USAir, reflecting its expanded nationwide reach. The airline continued to evolve, eventually merging with Piedmont Airlines and PSA, and later becoming part of American Airlines. Allegheny Commuter retained its original name until 1989 when it was renamed USAir Express. In the late 1980s, USAir Express became the sole airline serving Trenton, operating small British Aerospace BAe Jetstream 31 commuter propjets with non-stop flights from Baltimore and Washington Reagan National Airport.
Today, Trenton–Mercer Airport continues to serve passengers, offering competitive fares and convenient travel options. The airport has seen growth and improvements, including plans for a new terminal and expanded parking facilities. As of 2024, Frontier Airlines is the sole commercial tenant, providing non-stop flights to various destinations.
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United Airlines flew direct from Chicago O'Hare Airport in 1984-86
Trenton–Mercer Airport is a county-owned, joint civil–military, public airport located four miles northwest of Trenton in the West Trenton section of Ewing Township, Mercer County, New Jersey. Formerly known as Mercer County Airport, the airport serves one scheduled airline plus general and corporate aviation. Trenton–Mercer Airport is the third-busiest airport in New Jersey, with an average of 308 aircraft operations per day. The airport is also home to multiple flight schools.
United Airlines, which is headquartered in Willis Tower, operated mainline jet service with Boeing 727-200s and Boeing 737-200s to Trenton direct from Chicago O'Hare Airport from 1984 to 1986. Chicago O'Hare International Airport (ORD) is located 17 miles from the city centre and is easily accessible by train, commuter trains, bus, or taxi. O'Hare is a hub for United Airlines, and the airline has four United Club locations at the airport.
In the past, other airlines that serviced Trenton–Mercer Airport include Allegheny Commuter, which operated small Nord 262 commuter turboprops with nonstops from Newark and Philadelphia in 1976. Allegheny Commuter also operated direct one-stop flights from Washington National Airport. From 1998 until 2003, Shuttle America operated a scheduled business commuter service to airports in Connecticut, Massachusetts, New York, Delaware, and North Carolina. In 2006 and 2007, Comair flew to Atlanta and Boston from Trenton as Delta Connection using Canadair CRJ-200 regional jet aircraft.
As of 2018, Frontier Airlines is the only commercial tenant of Trenton–Mercer Airport, offering non-stop flights to many destinations.
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USAir Express was the only airline serving Trenton in 1989
Trenton-Mercer Airport is a county-owned, joint civil-military, public airport located four miles northwest of Trenton in the West Trenton section of Ewing Township, Mercer County, New Jersey. It is one of the oldest continuously operated airports in the United States, having been founded in 1911 as Mercer County Airport.
USAir Express was the only airline serving Trenton in late 1989. The airline operated small British Aerospace BAe Jetstream 31 commuter propjets nonstop from both Baltimore and Washington Reagan National Airport, flown via a code-sharing agreement with USAir.
USAir Express was originally founded in Pittsburgh as a mail delivery airline called All American Aviation, which soon became a commercial passenger airline. In 1953, it was renamed Allegheny Airlines and operated under that name for 25 years. In October 1979, following the passage of the Airline Deregulation Act, Allegheny Airlines changed its name to USAir. In 1989, the feeder network changed its name from Allegheny Commuter to USAir Express.
USAir, which had acquired Piedmont Airlines and Pacific Southwest Airlines (PSA) by 1989, was one of the world's largest airlines, with more than 5,000 flights daily to 182 airports. In the early 1990s, USAir expanded to Europe with flights to London, Paris, and Frankfurt from its four main hubs. In 1997, USAir changed its name to US Airways, and the feeder network became US Airways Express.
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Streamline Airlines operated from Trenton–Mercer Airport in 2011-12
Streamline Airlines, a subsidiary of Charter Air Transport, operated out of Trenton–Mercer Airport in Ewing, New Jersey, from April 4, 2011, until September 14, 2012. The airline offered weekday services between Trenton–Mercer Airport and Hanscom Field in Bedford, Massachusetts, using Embraer EMB 120 Brasilia turboprops. These 30-seat aircraft were chosen for being quieter and more fuel-efficient than jets of a similar size.
Streamline Airlines recommenced the former Pan-Am Clipper Connection route between Bedford–Hanscom and Trenton, which had been previously operated by Boston-Maine Airways until February 28, 2008. Streamline's service was geared towards routine business travel, with the airline considering adding services to seasonal leisure destinations. However, the airline consistently lost money and shut down in 2012, citing a poor economic climate and unprofitable operations.
Trenton–Mercer Airport, formerly known as Mercer County Airport, is a county-owned, joint civil–military, public airport located four miles northwest of Trenton, New Jersey. The airport serves one scheduled airline, Frontier, in addition to general and corporate aviation. Trenton–Mercer is the third-busiest airport in New Jersey, handling a total of 601,000 passengers in the 12 months ending July 2023.
Over the years, several airlines have served Trenton–Mercer Airport, including Allegheny Commuter in 1976, United from 1984 to 1986, USAir Express in 1989, Eastwind Airlines in the mid-to-late 1990s, and Shuttle America from 1998 to 2003. Despite a history of airlines coming and going, Streamline's entry into the market in 2011 was seen as a positive development for the local economy, offering convenient travel options for residents.
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Frequently asked questions
As of March 2025, Frontier Airlines is the only airline flying from Trenton-Mercer Airport. In the past, Trenton-Mercer Airport has been serviced by Allegheny Commuter, USAir Express, Eastwind Airlines, Shuttle America, Comair, Big Sky Airlines, Boston-Maine Airways, and Allegiant Air.
There are 5 destinations with direct flights from Trenton-Mercer Airport: Atlanta, Fort Myers, Orlando, Tampa, and West Palm Beach.
The airport code for Trenton-Mercer Airport is TTN.










































