A Complete Guide to the Types of Airports

Did you know that there are approximately 44,000 airports and airfields worldwide? Each of these airports serves a different purpose. There are several types of airports, depending on their location, type, services performed, and services provided. In this blog, we will outline the various types of airports found worldwide. The airports have been divided into four categories based on usage, accessibility, surface types, and special purpose. Let's dive right in.

Airports Based on Usage

1. Commercial Airports

Among the various categories of airports, we are examining those based on usage. Our list starts with commercial airports. These are the airports that most people are aware of. Take the JFK in New York, Charles de Gaulle in Paris, Heathrow in London, or the Indira Gandhi International Airport (IGI) in New Delhi. All these names are examples of commercial airports. At commercial airports, flights arrive or depart at any time, 24/7. Commercial airports are further divided into international and domestic airports.

2. General Aviation Airports

Among the various categories of airports, the next is a general aviation airport. A GA airport is a public-use airport that serves non-commercial aviation activities. Such activities include private flying, flight training, business aviation, and other specialized aviation services. These airports usually handle a smaller percentage of passengers compared to commercial airports, but do not have scheduled commercial service.

3. Cargo Airports

Among the different types of airports, cargo airports refer to specialized facilities that are designed to handle a high volume of freight and goods. Cargo airports serve both domestic and international cargo. Such airports play a vital role in the steady transfer of goods among countries, maintaining the global supply chain. Did you know that the largest cargo airport in the world is located in Hong Kong and handles approximately 4.9 million tonnes of cargo annually (as of 2024)?

4. Military Airports

Among the types of airports are military airports. As the name suggests, a military airport is an airport that is used by a country's military forces for operating their fleet of aircraft. These airports run like full-fledged airports with separate departments for aircraft maintenance, air traffic control, emergency response, and weapon storage. Most military airports are named after military, air force, and naval base stations. In smaller towns and cities that lack commercial airports, military airports are also used for commercial aviation.

Airports based on Accessibility

1. Public-Use Airports

The first name in the categories of airports based on accessibility is public-use airports. These airports are intended for public use. This is why such airports include commercial air travel activities, general aviation, and other aviation-related activities. While the key differentiator is that these airports are intended for public use, they can, however, be owned by a public entity, a private company, or an individual.

2. Private-Use Airports

The next name in our list of different types of airports is private-use airports. Private entities, such as companies or individuals, own private-use airports. The owner and their guests typically use such airports. Unlike public airports, private-use airports are not subjected to the same level of regulatory and environmental scrutiny. The proper functioning of such airports rests with the owner, who can implement additional measures to protect against unauthorized access or misuse.

Airports Based on Surface Types

1. Land Airports

In the types of airport list, we will now examine airports based on surface types. The first item on this list is land airports. Land airports are self-explanatory. It refers to the physical infrastructure and operational areas of an airport that are on land, as compared to the airspace. Some prominent examples of the largest land airports in the world include King Fahd International Airport (DMM) in Saudi Arabia, which is the largest airport by area. In India, Hyderabad's GMR Hyderabad International Airport is a prominent example of being one of the largest by land area and the first to implement e-boarding.

2. Seaplane Base

Among the different types of airports is a seaplane base. A seaplane base, also known as a water airport, is a facility located on or near a body of water. Seaplanes and amphibious aircraft utilize these airports for takeoff and landing. Seaplane bases function as full-fledged airports. This means that they have operations on the water and may have shore-side facilities for maintenance, fueling, and passenger services. Shoreline facilities can also include terminals for passengers and cargo, ramps for amphibious aircraft, floating docks, and areas for fueling, maintenance, and storage. Such airports also have an anchorage area where aircraft can be anchored when not in operation. Water bodies suitable for installing these seaplane bases include lakes, rivers, bays, or harbors.

3. Heliports

Among the various categories of airports is a heliport. A heliport is a designated area specifically used for helicopter operations. Heliports can be based on both land and water. Heliports will include one or more helipads for helicopters to take off and land. Some heliports will also have additional facilities such as fuel, lighting, windsocks, and hangars. Most heliports are located near hospitals or in remote areas where fixed-wing aircraft may struggle to operate smoothly. Some heliports offer basic services, such as fuel and lighting, while others may include hangars, terminal buildings, and even customs facilities.

4. STOLports

Among the different types of airports is STOLport. STOL stands for Short Take-Off and Landing aircraft. A STOLport typically has smaller runways than those created for commercial airports. STOLports are ideally suited for aircraft that can operate with significantly shorter runway requirements. With this in focus, most STOLports have runways measuring 1,500 meters or 5,000 feet. For reference, runways at commercial airports typically range in length from 2,400 to 4,000 meters (8,000 to 13,000 feet). While the term "STOLport" is used in some regions, particularly the United States, short-runway facilities are simply referred to as airports.

Special-Purpose Airports

1. Relief Airport

Among the various categories of airports is a relief airport, also known as a reliever airport. According to the Federal Aviation Administration (FAA), such airports are created to relieve traffic and congestion at larger airports in major cities across the country. Reliever airports also offer a range of general aviation services to both commercial and private aircraft. The primary purpose of building relief airports is to decrease congestion, primarily during peak travel months, to service both private and commercial aircraft, and to utilize them when things don't go as planned in bigger airports.

2. Rural-Access Airport

Among the different types of airports is a rural-access airport. A rural-access airport is typically a smaller airport designed to serve communities with limited access to major transportation hubs. In the absence of access, these airports play a crucial role in connecting rural areas while also supporting local economies and providing essential services, such as medical aid. Most rural-access airports handle fewer than 100,000 passengers annually. They may serve a mix of commercial passenger flights, general aviation, and cargo operations. Alternatively, these airports are also referred to as Remote, Rural, and Regional (RRR) airports.

3. Spaceports

Among the various categories of airports is a spaceport. A spaceport is also referred to as a cosmodrome. It is a facility designed to launch or receive a spacecraft, similar to the purpose of a seaplane base. Spaceports are essential for conducting spaceflights, which have recently gained momentum. Spaceports are further divided into ground-based, where the facility is located on land; sea-based, where the facility is mobile and spacecraft are launched from the sea; and air-launched, which refers to vehicles that can launch aircraft. The United States owns the maximum number of spaceports, with at least 13 operational ones.

FAA Airport Classification

In the United States, the Federal Aviation Administration (FAA) classifies airports based on their annual passenger boardings. This classification is crucial as it helps determine funding eligibility, planning priorities, and operational importance.

Primary airports: Among the types of airports are primary airports. These airports typically handle more than 10,000 passenger boardings annually. They are further divided into four categories. The first are the Large Hub (l), which are airports that account for 1% or more of the country's passenger enplanement. Popular examples include Hartsfield-Jackson Atlanta (ATL) or LAX. The second are the Medium Hub (M) airports, which handle 0.25% to 1% of the country's passenger boardings. Consider the examples of Portland International Airport (PDX) and Nashville International Airport (BNA). The third categories are the Small Hub (S) airports, which handle 0.05% to 0.25% of total enplanements. The last category includes non-hub primary airports, which have more than 10,000 enplanements but less than 0.05% of the country's total.
Non-primary airports: These types of airports handle less than 10,000 passenger boardings. These airports are further divided into three categories. The first are the non-primary commercial service airports, which handle anywhere between 2,500 to 9,999 passenger boardings annually. The second type of airport is the general aviation airport, which does not have scheduled airline service but serves private, instructional, and recreational flights. The third category is reliever airports.

Why is this categorization important? Understanding the different types of airports and the logic behind their classification can help pilots anticipate air traffic density, identify available services, determine communication requirements, and understand regulatory procedures. With more pilot jobs opening up, a thorough understanding of the categories of airports can give you a competitive edge.

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Conclusion

Whether it be transportation or the steady supply of goods worldwide, airports serve an essential purpose in both areas. They are the vital hubs for commerce, tourism, and economic development. However, connecting people and goods worldwide comes with its own set of responsibilities. Due to its strategic importance, airport construction is subject to a strict code of regulations, and rightly so. In the absence of these processes, airports might also pose a threat to the safety of aircraft and helicopters during landing and takeoff, which could result in the loss of many lives in a single mishap.

What is reassuring is that international regulatory bodies and national authorities do a fine job of ensuring that the various categories of airports are all up to standard. With air travel becoming increasingly popular, more authorities are considering expanding the number of runways or opening new airports to alleviate congestion at high-volume airports. This means that a significant number of aviation-related jobs will be available, particularly for aircraft maintenance engineer jobs and cabin crew jobs. If you are an aspiring aviation specialist, now is the time to brush up on your skills and start applying. And while doing so, head over to our blog on the importance of Airport Fixed-Base Operators (FBOs).

Types of Airports You Should Know