Heathrow handed out 15,000 Christmas cards designed by Rob Ryan to passengers, which were then posted free to anywhere in the world on their behalf.
The design features two passengers connecting from across the world, with the words "Days became hours until hours eventually became minutes and then finally it was merely seconds until all of the time that I had been away from you had dissolved and I was back safe with you again."
The cards were handed out to passengers between 2 and 5 December, and will be available as an e-card. A donation from each card was given to Heathrow's charity of the year, Macmillan Cancer Support.
To mark this, Heathrow conducted a survey into the card-giving habits of Brits, with 28% saying they will use a Christmas card in an attempt to attract a potential other half.
It was also found that print cards still outnumber digital e-cards by 2:1 with the average Brit planning to send 28 by post and 14 cards digitally this December. However, 48% admit to writing a card that they do not sent, while 34% have been left disappointed by not receiving a card from someone.