Sachin Walls
Heathrow Airport is one of the world's busiest flight hubs. In 2024, it was the busiest airport in Europe and the fourth busiest in the world by passenger traffic. In 2025, it was ranked fifth busiest in the world. Heathrow has a high volume of passenger traffic, with 80.9 million passengers travelling through the airport in 2019, its busiest year on record. The airport is the primary hub of British Airways and Virgin Atlantic, with 90 airlines making Heathrow their base. The airport has two runways and four passenger terminals, with a total of 475,000 aircraft movements annually.
| Characteristics | Values |
|---|---|
| Busiest month | March 2025 |
| Busiest year | 2019 (80.9 million passengers) |
| Position in world ranking | 4th busiest airport in the world |
| Position in Europe ranking | Busiest airport in Europe |
| Position in UK ranking | Busiest airport in the UK |
| Number of passengers in February 2025 | 5.7 million |
| Number of passengers from March 2024 to February 2025 | 84.1 million |
| Number of passengers in 2024 | 83.9 million |
| Number of passengers in 2023 | More than 4 million |
| Number of passengers in 2021 | 19.4 million |
| Number of destinations | 214 |
| Number of airlines | Over 89 |
| Number of terminals | 4 passenger terminals and 1 cargo terminal |
| Busiest single destination | New York |
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What You'll Learn
Heathrow was the fourth busiest airport in the world in 2024
Heathrow Airport is one of the world's busiest airports, and in 2024, it was the fourth busiest airport in the world by passenger traffic. Heathrow is the primary hub for British Airways and Virgin Atlantic and is located 14 miles (23 kilometres) west of Central London. The airport has two parallel east-west runways, four operational passenger terminals, and one cargo terminal.
In 2024, Heathrow handled nearly 84 million passengers, a record for the airport, with an average of 6.3 million passengers per month. This was an increase of 3.7% compared to 2019, which was previously its busiest year. Heathrow's high passenger volume is due to its extensive international connections, serving 214 destinations in 84 countries. It is also the best-connected airport globally when measured by the total number of destinations served and scheduled connections.
Heathrow's status as one of the world's busiest airports was highlighted during a full-day closure in March 2025 due to a fire in a nearby electrical substation. The shutdown affected an estimated 1,350 flights and caused significant disruption to the travel plans of approximately 200,000 people. The impact of the closure was compounded by Heathrow's role as a major hub for long-haul flights operated by wide-body aircraft, which require diversion to large airports.
The Labour Party's win in the 2024 UK general election brought the plans for a third runway back into the spotlight. However, the airport's CEO indicated that a final decision on this expansion would be sought from the government by the end of 2025. In addition to passenger traffic, Heathrow also experienced a busy year in terms of cargo traffic, ranking fourth busiest in Europe in 2013.
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In 2023, Heathrow was the busiest airport in Europe
Heathrow Airport is one of the world's busiest flight hubs. In March 2023, more than four million passengers travelled on domestic and international flights in and out of Heathrow, making it the busiest airport in Europe.
Heathrow is the primary hub for British Airways and Virgin Atlantic. It is used by over 89 airlines flying to 214 destinations in 84 countries. The airport has four passenger terminals and one cargo terminal. In 2021, Heathrow served 19.4 million passengers, of which 17 million were international and 2.4 million were domestic.
Heathrow's busiest year on record was 2019, when 80.9 million passengers travelled through the airport. In 2023, the airport experienced a resurgence in passenger numbers, with 7 million passengers travelling through Heathrow in October, a 19% increase compared to October 2022. This surge in demand propelled Heathrow to become the fourth busiest airport in the world.
Heathrow's status as a major global travel hub was evident in the disruption caused by its full-day closure in March 2025 due to a fire. This incident affected an estimated 200,000 people and had lingering consequences for international travel, as Heathrow serves as a crucial hub for connections. The airport's high passenger volume and connectivity underscore its significance in the global aviation industry.
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Heathrow's busiest year was 2019 with 80.9 million passengers
Heathrow Airport is one of the world's busiest airports. In 2019, the airport recorded its busiest year ever, with 80.9 million passengers. This was a notable increase from 2018, when Heathrow to New York JFK became the first billion-dollar route in the world for a single airline – British Airways.
Heathrow's status as one of the world's busiest airports is due to its role as a major hub for international travel. The airport is the primary hub for British Airways and Virgin Atlantic, with British Airways holding a 51% share of flights at the hub. The airport is served by over 89 airlines, flying to 214 destinations in 84 countries. New York is the busiest single destination in passenger numbers, with over three million passengers flying between Heathrow and JFK Airport in 2021.
Heathrow's importance as a global travel hub was highlighted in 2025 when a fire at a nearby electrical substation caused a full-day closure of the airport. The shutdown disrupted travel for tens of thousands of passengers and impacted an estimated 1,300 flights. As Europe's busiest airport, the closure caused significant travel chaos, with ripple effects lasting for several days.
In recent years, Heathrow has continued to break records, with 83.9 million passengers in 2024 and a predicted 84.2 million passengers in 2025. The airport's resilience and ability to handle a high volume of passengers and flights have been tested, particularly during unprecedented disruptions. Despite the challenges, Heathrow remains a key international travel hub, contributing significantly to global connectivity.
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Heathrow's two runways are less than European rivals
Heathrow Airport is one of the busiest airports in the world. In 2024, it was the busiest airport in Europe and the fourth busiest airport in the world by passenger traffic. Heathrow is also the busiest airport in Europe in terms of the number of seats available. In 2019, Heathrow had a record-breaking 80.9 million passengers, and in 2024, it broke its previous record with 83.9 million passengers.
Despite being one of the busiest airports in the world, Heathrow Airport currently operates with only two parallel east-west runways. This is in stark contrast to its European rivals, many of which have four or more runways. For example, Charles de Gaulle Airport in Paris, Frankfurt Airport in Germany, and Amsterdam's Schiphol Airport all have four or more runways. Heathrow's two runways are a result of the expansion of the central terminal area and the need for longer runways to accommodate larger, modern aircraft.
The limited number of runways at Heathrow is primarily due to the airport's location and the challenges associated with acquiring additional land. The airport is situated in a densely populated area, and expanding the airport by building new runways would require the demolition of residential areas, resulting in the displacement of thousands of people. Additionally, the noise and environmental impacts associated with additional runways are significant concerns, as Heathrow is already heavily regulated in terms of noise pollution.
However, Heathrow Airport is not ignoring the need for expansion. There are plans in place to construct a third runway to the northwest of the existing two runways. This expansion is supported by the UK Government through the Airports National Policy Statement and is expected to create tens of thousands of jobs and generate billions of pounds in economic benefits for the UK. Additionally, it would allow for an extra 250,000 to 260,000 flights per year, helping Heathrow retain its place as Europe's busiest airport.
While Heathrow's two runways may be less than its European rivals, the airport's efficiency and high capacity cannot be denied. Despite having fewer runways, Heathrow transports more passengers than any other airport in Europe. This highlights the airport's ability to effectively manage its operations and maximize the utilization of its existing infrastructure.
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Heathrow's most popular destination is New York
Heathrow Airport is one of the world's busiest and most internationally connected airports. In 2024, it was the busiest airport in Europe and the fourth busiest in the world by passenger traffic. Heathrow is the primary hub for British Airways and Virgin Atlantic and has four passenger terminals and one cargo terminal. In 2021, Heathrow served 19.4 million passengers, with 17 million international and 2.4 million domestic travellers. The airport's busiest year on record was 2019, with 80.9 million passengers. Heathrow is the UK's largest port by value, with a network of over 218 destinations in 84 countries.
Other popular destinations from Heathrow include Madrid, which is the third most popular destination, and Dubai, which is the second most visited city in the world. In 2025, Heathrow was ranked as the fifth busiest airport in the world, with Atlanta Hartsfield-Jackson Airport taking the top spot, followed by Dubai International and Haneda Airport in Tokyo. Heathrow is consistently ranked as one of the world's busiest airports, accommodating millions of passengers each year and offering connections to destinations worldwide.
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Frequently asked questions
Heathrow Airport is usually one of the world's busiest flight hubs. In 2024, it was the fourth busiest airport in the world by passenger traffic.
Heathrow's busiest year on record was 2019, with 80.9 million passengers travelling through the airport.
Heathrow experienced its busiest February on record in February 2025, with 5.7 million passengers travelling through the airport.
New York is the busiest single destination from Heathrow Airport, with over three million passengers flying between Heathrow and JFK Airport in 2021.
There are about 475,000 total aircraft movements through Heathrow annually.
