關於「When was Heathrow airport built」標籤，搜尋引擎有相關的訊息討論：

Heathrow Airport - Wikipediaen.wikipedia.org › wiki › Heathrow_AirportHistory of Heathrow Airport - Wikipediaen.wikipedia.org › wiki › History_of_Heathrow_AirportOur History - Heathrow Airportwww.heathrow.com › Company › About HeathrowTerminals and Airfield - Heathrow Airportww