
The Core 30 airports are the 30 busiest airports in the US by passenger numbers. These include well-known international airports such as Hartsfield-Jackson Atlanta International, Boston Logan International, and Chicago O'Hare International. The Core 30 airports handle a large volume of domestic flights within the USA, as well as international flights, and are ranked according to the total number of passengers travelling through each airport in a year.
| Characteristics | Values |
|---|---|
| Definition | The top 30 busiest airports in the US by passenger numbers |
| Ranking factors | Number of passengers flying to or from each airport |
| Data sources | Airport Council International; Aviation System Performance Metrics (ASPM) |
| Airports included | Hartsfield-Jackson Atlanta Intl; Boston Logan Intl; Baltimore/Washington Intl; Charlotte Douglas Intl; Ronald Reagan Washington National; Denver Intl; Dallas/Fort Worth Intl; Detroit Metropolitan Wayne County; Newark Liberty Intl; Fort Lauderdale/Hollywood Intl; Honolulu Intl; Washington Dulles Intl; George Bush Houston Intercontinental; New York John F. Kennedy Intl; Las Vegas McCarran Intl; Los Angeles Intl; New York LaGuardia; Orlando Intl; Chicago Midway; Memphis Intl; Miami Intl; Minneapolis/St. Paul Intl; Chicago O'Hare Intl; Philadelphia Intl; Phoenix Sky Harbor Intl |
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What You'll Learn
- Core 30 airports are the 30 busiest airports in the US by passenger numbers
- The Core 30 includes Atlanta, Boston, Baltimore, Charlotte, and Denver airports
- North America's vast area leads to high domestic air travel
- The Aviation System Performance Metrics (ASPM) reports on Core 30 traffic
- The ASPM covers 77 airports and 35+ airlines

Core 30 airports are the 30 busiest airports in the US by passenger numbers
The Core 30 airports include major aviation hubs such as Hartsfield-Jackson Atlanta International Airport (ATL), Boston Logan International Airport (BOS), and Los Angeles International Airport (LAX). These airports serve as key gateways for both domestic and international travel within the United States.
The list of Core 30 airports encompasses airports from across the nation, representing various regions. For instance, Ronald Reagan Washington National Airport (DCA) and Baltimore/Washington International Airport (BWI) serve the capital region, while Denver International Airport (DEN) and Las Vegas McCarran International Airport (LAS) are crucial hubs in the western United States.
The Core 30 airports handle a significant volume of air traffic, contributing to the country's extensive domestic flight network. The large land area of North America makes air travel a convenient and preferred mode of transportation for long-distance travel. These airports play a vital role in facilitating travel for both leisure and business purposes, connecting people from different parts of the country and the world.
The ranking of Core 30 airports is dynamic and can change over time. Factors such as economic growth, tourism trends, and the development of new transportation infrastructure can influence the passenger numbers at each airport. Therefore, it is essential to refer to the latest data and rankings to understand the current busiest airports in the US.
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The Core 30 includes Atlanta, Boston, Baltimore, Charlotte, and Denver airports
The Core 30 airports are a group of airports recognised by the Federal Aviation Administration (FAA). The Core 30 includes Atlanta, Boston, Baltimore, Charlotte, and Denver airports, each with its unique features and significance.
Atlanta's airport, Hartsfield-Jackson Atlanta International Airport (ATL), is a prominent fixture in the Core 30. ATL is known for its high volume of air traffic, with simultaneous approaches to four runways and departures from two runways. The airport is characterised as a busy hub, with a unique dynamic where the main Core 30 airport accounts for about 60% of the traffic, while the remaining 40% is distributed across satellite airports.
Boston Logan International Airport (BOS) is another key member of the Core 30. Boston's airport plays a significant role in the region's transportation network, serving a wide range of passengers.
Baltimore/Washington International Airport (BWI) is an important gateway in the Core 30. BWI serves the Baltimore-Washington metropolitan area and is a crucial link for travellers in the region.
Charlotte Douglas International Airport (CLT) is a notable component of the Core 30. CLT has a well-designed parking system, utilising a colour-coded scheme to indicate open and closed parking facilities, ensuring efficient traffic management.
Denver International Airport (DEN), located in Colorado, is a significant member of the Core 30. DEN is the largest airport in the Western Hemisphere by land area and the second-largest on Earth. It has consistently ranked among the busiest airports in the world, serving a high volume of passengers. DEN is known for its lengthy runway, convenient location, and unique artistic features, such as the Blue Mustang statue with glowing red eyes.
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North America's vast area leads to high domestic air travel
North America is a vast continent, with a range of landscapes, climates, and cultures. Its sheer size means that domestic air travel is often the most efficient way to get from one place to another. The US, Mexico, and Canada each offer a large number of seats for domestic flights, with the US dominating the continent's capacity. This is reflected in the Core 30 airports, which include Atlanta, Boston, Baltimore, Charlotte, Washington, Denver, and many more. These airports are spread across the country, serving both large and small cities, and facilitating domestic travel across the continent.
The US has a busy travel season during Thanksgiving, which contributes to its high number of domestic flights. The country's large land area means that many people choose to travel by air to save time and avoid long drives. The US market is expected to grow by 2.2% in the winter quarter of 2024 compared to 2023, indicating a strong demand for domestic air travel.
Mexico, on the other hand, is expected to see slower growth of 0.3% in the same period. However, the US-Mexico air travel market has overtaken the US-Canada market in terms of annual seat capacity. This shift can be attributed to the US Federal Aviation Administration restoring Category 1 status to Mexico in September 2023.
Canada has also experienced growth in its domestic air travel market, despite the loss of two major carriers, Lynx Air and Canada Jetlines. Foreign carriers have stepped in to fill the gap, responding to the recovering demand for travel following the pandemic restrictions. Canada is expected to see a 3.4% increase in capacity in the winter quarter of 2024.
Overall, North America's vast area and varied destinations contribute to a high demand for domestic air travel. The continent's airlines have been working to maintain customer satisfaction, with investments in staff training and improvements to the overall flight experience. Despite economic uncertainty and its impact on travel demand, North American airlines have seen an increase in passenger satisfaction, according to the J.D. Power 2025 North America Airline Satisfaction Study.
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The Aviation System Performance Metrics (ASPM) reports on Core 30 traffic
The Aviation System Performance Metrics (ASPM) is a reporting system that provides data on the traffic and performance of 77 ASPM airports and over 35 airlines. The ASPM reports on Core 30 traffic, which includes the 30 busiest airports in the United States by passenger numbers. These airports handle a large volume of domestic flights within the USA, as North America covers a vast area, making ground travel by car less feasible for many journeys.
The Core 30 airports, as listed by ASPMHelp, include major international airports such as Hartsfield-Jackson Atlanta International (ATL), Boston Logan International (BOS), and Chicago O'Hare International (ORD). These airports serve as key hubs for domestic and international travel, connecting major cities across the United States and facilitating global travel.
The ASPM provides valuable insights into the performance and efficiency of these Core 30 airports. It includes data on various aspects of airport operations, such as flight schedules, delays, and traffic flow management. By collecting and analyzing this data, the ASPM helps stakeholders, such as airlines, airports, and regulators, make informed decisions to optimize airport operations and enhance overall travel experiences.
One of the critical aspects of ASPM reporting is its focus on traffic monitoring. It utilizes systems like CountOps, which provides hourly counts of air traffic activity at TRACONs, towers, and airports. Additionally, the Traffic Flow Management System Counts (TFMSC) offers a comprehensive view of traffic by airport, utilizing TFMS flight messages. This data is essential for understanding congestion patterns, identifying bottlenecks, and implementing effective traffic management strategies.
The ASPM's scope extends beyond mere traffic reporting. It also encompasses the Airline Service Quality Performance (ASQP), which assesses traffic and delays for the largest US carriers. This component of the ASPM helps evaluate the performance of major airlines, ensuring they meet service quality standards and efficiently manage their operations. By providing transparency and accountability, the ASPM contributes to the overall improvement of the aviation system's performance and passenger satisfaction.
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The ASPM covers 77 airports and 35+ airlines
The Airport Surface Movement Program (ASPM) covers 77 airports and over 35 airlines. The program is facilitated by the U.S. Department of Transportation Federal Aviation Administration.
ASPM is an automated system that provides air traffic controllers with accurate, timely, and useful information to help manage, control, and track aircraft and surface vehicles on the airport surface. It also helps to increase safety and efficiency in low-visibility conditions.
The 77 airports covered by the program are considered the Core 30 airports. These include major US airports such as Hartsfield-Jackson Atlanta International, Boston Logan International, Baltimore/Washington International, and Charlotte Douglas International.
The Core 30 airports are a subset of the busiest airports in the US, as determined by the FAA. They are selected based on specific criteria, including the number of passengers and aircraft operations, the complexity of surface operations, and the level of existing surface surveillance equipment. These airports experience a high volume of air traffic and complex surface operations, making them ideal candidates for the implementation of advanced surface movement technologies.
By focusing on these high-activity airports, the ASPM aims to enhance safety and efficiency in aircraft surface operations, benefiting both travellers and airlines.
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Frequently asked questions
The Core 30 Airports are the 30 busiest airports in the US by passenger numbers.
Some examples of Core 30 Airports include JFK - New York John F. Kennedy International, LAX - Los Angeles International, and ATL - Hartsfield-Jackson Atlanta International.
An airport qualifies as a Core 30 Airport based on the number of passengers flying to or from the airport. This includes passengers catching connecting flights to another destination.































