Mapping Airways: World’s Flight Paths and Airports
There are up to 8,755 commercial flights in the air at any given time of day. These flights transport thousands of people (and millions of dollars worth of goods) around the world.
But where are these people and goods headed? This map from Adam Symington uses historical data from OpenFlights to visualize the world’s flight paths.
The graphic shows a comprehensive data set encompassing 67,663 different routes that connect 10,000 different airports across the globe.
A Note On the Data
The map uses an OpenFlights database provided by the third-party source that hasn’t been updated since June 2014.
Because of this, the data used for the graphic is of historical value only. However, this detailed map sparked our curiosity and got us wondering—what are some of the busiest aviation hubs around the world right now?
We did some digging, and here’s what we found.
Busiest Airports by Passengers
There are several ways to gauge an airport’s popularity. One way is to measure total passenger traffic throughout the year.
According to Airports Council International (ACI), eight of the top 10 busiest airports for passenger traffic in 2021 were in America. Here’s a look at the top 10 list, as of April 11, 2022:
|Rank||Airport||Country||Passenger Traffic (2021)|
|1||Atlanta GA (ATL)||🇺🇸 US||75,704,760|
|2||Dallas/Fort Worth TX (DFW)||🇺🇸 US||62,465,756|
|3||Denver CO (DEN)||🇺🇸 US||58,828,552|
|4||Chicago IL (ORD)||🇺🇸 US||54,020,399|
|5||Los Angeles CA (LAX)||🇺🇸 US||48,007,284|
|6||Charlotte NC (CLT)||🇺🇸 US||43,302,230|
|7||Orlando FL (MCO)||🇺🇸 US||40,351,068|
|8||Guangzhou (CAN)||🇨🇳 China||40,259,401|
|9||Chengdu (CTU)||🇨🇳 China||40,117,496|
|10||Las Vegas NV (LAS)||🇺🇸 US||39,754,366|
In 2021, the airport with the most passenger traffic was Hartsfield-Jackson Atlanta International Airport. It accommodated more than 75 million passengers last year—a 76.4% increase compared to 2020 figures.
Hartsfield-Jackson is well-known for being one of the busiest airports in the world. One reason for this is its convenient location—according to the airport’s official website, Atlanta is within a two-hour flight from 80% of the U.S. population.
Dallas/Forth Worth (DFW) came in second place, seeing 62.5 million passengers throughout 2021. DFW was one of the only airports to boost its service offerings throughout the pandemic, and is also the main hub for American Airlines, the world’s largest airline by fleet size.
Busiest Airports by Cargo
While the U.S. dominates the ranking when it comes to passenger traffic, the list is much more diverse when looking at air cargo volumes. Here’s a look at the ranking, based on loaded and unloaded freight and mail (including transit freight):
|Rank||Airport||Country||Cargo Traffic (Metric Tonnes, 2021)|
|1||Hong Kong SAR (HKG)||🇭🇰 Hong Kong||5,025,495|
|2||Memphis TN (MEM)||🇺🇸 US||4,480,465|
|3||Shanghai (PVG)||🇨🇳 China||3,982,616|
|4||Anchorage AK (ANC)||🇺🇸 US||3,555,160|
|5||Incheon (ICN)||🇰🇷 South Korea||3,329,292|
|6||Louisville KY (SDF)||🇺🇸 US||3,052,269|
|7||Taipei (TPE)||🇹🇼 Taiwan||2,812,065|
|8||Los Angeles CA (LAX)||🇺🇸 US||2,691,830|
|9||Tokyo (NRT)||🇯🇵 Japan||2,644,074|
|10||Doha (DOH)||🇶🇦 Qatar||2,620,095|
Hong Kong (HKG) takes the top spot since the airport processed more than 5.0 million metric tonnes of freight and mail throughout 2021.
Hong Kong has been known as one of the busiest air cargo hubs for over a decade and is able to maintain this reputation because of its strategic location, impressive infrastructure, efficient customs, and business-friendly trade regulations.
The COVID-19 Impact on Aviation
The global pandemic hit the aviation industry hard. At its lowest point, international travel was down 98% from normal levels.
While the aviation industry is starting to recover from its COVID-induced slump, things still haven’t fully bounced back yet, especially in places like Shanghai, where lockdowns are still being mandated.
But experts remain hopeful for the future. According to ACI World’s General Director Luis Felipe de Oliveira, last year’s recovery was just the beginning.
“With many countries taking steps towards the return of a certain normality, lifting almost all the health measures and travel restrictions as supported by science, we welcome the continuation of air travel demand’s recovery in 2022.”
-Luis Felipe de Oliveira, ACI World’s Director General
This article was published as a part of Visual Capitalist's Creator Program, which features data-driven visuals from some of our favorite Creators around the world.
Mapped: Which Countries Still Have a Monarchy?
Beyond the 15 nations under the British monarchy, 28 other countries still have a ruling monarch. Here’s a look at the world’s monarchies.
Mapped: Which Countries Still Have a Monarchy?
In the wake of Queen Elizabeth II’s death, the question of monarchy is brought sharply into focus.
However, a surprising number of countries have ruling monarchs, and in this visual we break down the kinds of royal leadership across the 43 countries that still have them.
Types of Monarchies
A monarch in the simplest sense is a country’s king, queen, emir, or sultan, and so on. But before diving in, it’s important to break down the distinctions between the types of monarchies that exist today. Generally, there are four kinds:
① Constitutional Monarchy
The monarch divides power with a constitutionally founded government. In this situation, the monarch, while having ceremonial duties and certain responsibilities, does not have any political power. For example, the UK’s monarch must sign all laws to make them official, but has no power to change or reject new laws.
Here are some examples of countries with constitutional monarchies:
🇬🇧 United Kingdom
② Absolute Monarchy
The monarch has full and absolute political power. They can amend, reject, or create laws, represent the country’s interests abroad, appoint political leaders, and so on.
Here are some examples of countries with absolute monarchies:
🇸🇦 Saudi Arabia
🇻🇦 Vatican City
③ Federal Monarchy
The monarch serves an overall figurehead of the federation of states which have their own governments, or even monarchies, ruling them.
Here are some examples of countries with federal monarchies:
Malaysia is a unique form of federal monarchy. Every five years, each state’s royal leaders choose amongst themselves who will be the monarch, or the Yang di-Pertuan Agong, of Malaysia and the respective states. Furthermore, the monarchy is also constitutional, allowing a democratically elected body to govern.
④ Mixed Monarchy
This is a situation wherein an absolute monarch may divide powers in distinct ways specific to the country.
Here are some examples of countries with mixed monarchies:
Interestingly, Liechtenstein is the only European monarchy that still practises strict agnatic primogeniture. Under agnatic primogeniture, the degree of kinship is determined by tracing descent from the nearest common ancestor through male ancestors.
Kings, Queens, Emperors, and Sultans Around the Globe
Now let’s break down the different monarchies country by country:
|Country||Type of Monarchy||Title of Head of State||Monarch||Title of Head of Government|
|🇦🇩 Andorra||Constitutional||Co-Princes||Joan-Enric Vives, Emmanuel Macron||Prime Minister|
|🇦🇬 Antigua and Barbuda||Constitutional||King||Charles III||Prime Minister|
|🇦🇺 Australia||Constitutional||King||Charles III||Prime Minister|
|🇧🇭 Bahrain||Mixed||King||Hamad bin Isa Al Khalifa||Prime Minister|
|🇧🇪 Belgium||Constitutional||King||Philippe||Prime Minister|
|🇧🇿 Belize||Constitutional||King||Charles III||Prime Minister|
|🇧🇹 Bhutan||Constitutional||King||Jigme Khesar Namgyel Wangchuck||Prime Minister|
|🇧🇳 Brunei Darussalam||Absolute||Sultan||Hassanal Bolkiah||Sultan|
|🇰🇭 Cambodia||Constitutional||King||Norodom Sihamoni||Prime Minister|
|🇨🇦 Canada||Constitutional||King||Charles III||Prime Minister|
|🇩🇰 Denmark||Constitutional||Queen||Margrethe II||Prime Minister|
|🇸🇿 Eswatini||Absolute||King||Mswati III||Prime Minister|
|🇬🇩 Grenada||Constitutional||King||Charles III||Prime Minister|
|🇯🇲 Jamaica||Constitutional||King||Charles III||Prime Minister|
|🇯🇵 Japan||Constitutional||Emperor||Naruhito||Prime Minister|
|🇯🇴 Jordan||Mixed||King||Abdullah II||Prime Minister|
|🇰🇼 Kuwait||Mixed||Emir||Nawaf Al-Ahmad Al-Jaber Al-Sabah||Prime Minister|
|🇱🇸 Lesotho||Constitutional||King||Letsie III||Prime Minister|
|🇱🇮 Liechtenstein||Mixed||Sovereign Prince||Hans-Adam II||Prime Minister|
|🇱🇺 Luxembourg||Constitutional||Grand Duke||Henri||Prime Minister|
|🇲🇾 Malaysia||Constitutional & Federal||Yang di-Pertuan Agong||Abdullah||Prime Minister|
|🇲🇨 Monaco||Mixed||Sovereign Prince||Albert II||Minister of State|
|🇲🇦 Morocco||Mixed||King||Mohammed VI||Prime Minister|
|🇳🇱 Netherlands||Constitutional||King||Willem-Alexander||Prime Minister|
|🇳🇿 New Zealand||Constitutional||King||Charles III||Prime Minister|
|🇳🇴 Norway||Constitutional||King||Harald V||Prime Minister|
|🇴🇲 Oman||Absolute||Sultan||Haitham bin Tarik||Sultan|
|🇵🇬 Papua New Guinea||Constitutional||King||Charles III||Prime Minister|
|🇶🇦 Qatar||Mixed||Emir||Tamim bin Hamad Al Thani||Prime Minister|
|🇰🇳 Saint Kitts and Nevis||Constitutional||King||Charles III||Prime Minister|
|🇱🇨 Saint Lucia||Constitutional||King||Charles III||Prime Minister|
|🇻🇨 Saint Vincent and the Grenadines||Constitutional||King||Charles III||Prime Minister|
|🇸🇦 Saudi Arabia||Absolute||King||Salman||Prime Minister|
|🇸🇧 Solomon Islands||Constitutional||King||Charles III||Prime Minister|
|🇪🇸 Spain||Constitutional||King||Felipe VI||President of the Government|
|🇸🇪 Sweden||Constitutional||King||Carl XVI Gustaf||Prime Minister|
|🇹🇭 Thailand||Constitutional||King||Rama X||Prime Minister|
|🇧🇸 The Bahamas||Constitutional||King||Charles III||Prime Minister|
|🇹🇴 Tonga||Constitutional||King||Tupou VI||Prime Minister|
|🇹🇻 Tuvalu||Constitutional||King||Charles III||Prime Minister|
|🇦🇪 UAE||Federal||President||Mohamed bin Zayed Al Nahyan||Prime Minister|
|🇬🇧 UK||Constitutional||King||Charles III||Prime Minister|
|🇻🇦 Vatican City||Absolute||Pope||Francis||President of the Pontifical Commission|
Constitutional monarchies are undoubtedly the most popular form of royal leadership in the modern era, making up close to 70% of all monarchies. This situation allows for democratically elected governments to rule the country, while the monarch performs ceremonial duties.
Most monarchs are hereditary, inheriting their position by luck of their birth, but interestingly, French president, Emmanuel Macron, technically serves as a Co-Prince of Andorra.
Another unique case is the Vatican’s Pope Francis, who has absolute power in the small independent city—he gained his role thanks to an election process known as a papal conclave.
The Role of Monarchies
One of the most notable and famous ruling monarchies is the United Kingdom’s House of Windsor—also known as Queen Elizabeth II’s family. King Charles III has now ascended to the country’s throne, making him head of state in 15 nations total, including Canada, Australia, and New Zealand.
Many see the benefit in having a stable and consistent form of tradition and decorum at the country’s head of state.
“The Crown is an integral part of the institution of Parliament. The Queen [now King] plays a constitutional role in opening and dissolving Parliament and approving Bills before they become law.” – British Parliament
Japan’s royal family has been a prime example of stability, having reigned in the country for more than 2,600 years under the same hereditary line.
Critiques and the Future of Monarchy
Some claim, however, that there is no function of monarchy in the modern day, and complaints of monarchies’ immense wealth and power are rampant.
For example, according to the Dutch government, King Willem-Alexander’s budget for 2022, funded by the state and thus, taxpayers, comes out to more than €48 million.
Beyond tax dollars, with absolute monarchies there is typically a lack of political freedoms and certain rights. Saudi Arabia, for example, has no national elections. Rather its king, Salman bin Abdulaziz Al Saud, stays in power for life, appoints the cabinet himself, and passes laws by royal decree.
The death of Queen Elizabeth, though, may bring about change though for many of the world’s royally-governed. Since Barbados’ removal of her as head of state in 2021, six other Caribbean nations have expressed the desire to do the same, namely:
🇧🇸 The Bahamas
🇦🇬 Antigua and Barbuda
🇰🇳 St. Kitts and Nevis
The future of monarchy in the 21st century is certainly not a guarantee.
Mapped: Countries With the Highest Flood Risk
Recent floods in Pakistan have affected more than 33 million people. Where is the risk of flooding highest around the world?
Risk of Flooding Mapped Around the World
Devastating floods across Pakistan this summer have resulted in more than 1,400 lives lost and one-third of the country being under water.
This raises the question: which nations and their populations are the most vulnerable to the risk of flooding around the world?
Using data from a recent study published in Nature, this graphic maps flood risk around the world, highlighting the 1.81 billion people directly exposed to 1-in-100 year floods. The methodology takes into account potential risks from both inland and coastal flooding.
Asian Countries Most at Risk from Rising Water Levels
Not surprisingly, countries with considerable coastlines, river systems, and flatlands find themselves with high percentages of their population at risk.
The Netherlands and Bangladesh are the only two nations in the world to have more than half of their population at risk due to flooding, at 59% and 58%, respectively. Vietnam (46%), Egypt (41%), and Myanmar (40%) round out the rest of the top five nations.
Besides the Netherlands, only two other European nations are in the top 20 nations by percentage of population at risk, Austria (18th at 29%) and Albania (20th at 28%).
|Rank||Country||Flood risk, by population exposed (%)||Total population exposed|
|#12||🇸🇸 South Sudan||32.5%||5,437,000|
|#15||🇨🇬 Republic of the Congo||29.3%||1,170,000|
The Southeast Asia region alone makes up more than two-thirds of the global population exposed to flooding risk at 1.24 billion people.
China and India account for 395 million and 390 million people, respectively, with both nations at the top in terms of the absolute number of people at risk of rising water levels. The rest of the top five countries by total population at risk are Bangladesh (94 million people at risk), Indonesia (76 million people at risk), and Pakistan (72 million people at risk).
How Flooding is Already Affecting Countries Like Pakistan
While forecasted climate and natural disasters can often take years to manifest, flooding affected more than 100 million people in 2021. Recent summer floods in Pakistan have continued the trend in 2022.
With 31% of its population (72 million people) at risk of flooding, Pakistan is particularly vulnerable to floods.
In 2010, floods in Pakistan were estimated to have affected more than 18 million people. The recent floods, which started in June, are estimated to have affected more than 33 million people as more than one-third of the country is submerged underwater.
The Cost of Floods Today and in the Future
Although the rising human toll is by far the biggest concern that floods present, they also bring with them massive economic costs. Last year, droughts, floods, and storms caused economic losses totaling $224.2 billion worldwide, nearly doubling the 2001-2020 annual average of $117.8 billion.
A recent report forecasted that water risk (caused by droughts, floods, and storms) could eat up $5.6 trillion of global GDP by 2050, with floods projected to account for 36% of these direct losses.
As both human and economic losses caused by floods continue to mount, nations around the world will need to focus on preventative infrastructure and restorative solutions for ecosystems and communities already affected and most at risk of flooding.
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