My longest was 31 hours last year when I went to Alaska .... but most of my friends here are from Texas and they all have a 23 hour flight to go home on holidays at least 2 or 3 times a year ... do not think I could do that, that often. :-(When we flew to Siem Reap earlier in the year, it only took 2 hours... makes a huge difference when you are 'half way there'.Enjoy the rest of your travels.