I got stranded in Bristol airport when I went to go visit Shaun because my bank had cancelled my card due to "suspicious activity" (I was using it when I was in Germany because that's where my grant money was being paid into) so that was a bit of a hassle and put a downer on the weekend
Terrorists attacked Glasgow airport the day before we were going on a family holiday but thankfully we got to go on holiday, loads of delays though
I got dumped by my ex on the first day of my week over there visiting and had to spend a week together and being introduced to friends I would never meet again and was more or less ignored the whole time and was left by myself for great lengths of time. Think that was probably the worst one
