Heathrow is one of the world's greatest international airports serving over 84.5 million passengers in 2025. It is in the midst of a debate to build a 3rd runway, a proposal that has been brought up and discussed for years, but the political environment continues to be heated while airlines challenge how the expansion costs can be better managed.
Breaking down passenger traffic, the largest proportion is for Europe (34 million), followed by North America (20.6 million), Asia Pacific (11 million), and the Middle East (8.8 million).
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