A flight from London to Cardiff takes about one hour.
A flight from Cardiff to Beijing would take about 11 hours.
A flight from Cardiff to Dublin would take about 1 hour.
A flight from Cardiff to Amsterdam would take about 1 hour.
The shortest flight duration from Holland to Cardiff would be around 1 hour.
Answering "How long is the flight from Connecticut to Hawaii?"
Cardiff-Amsterdam-Otopeni: 5 hours with KLM.
About 4 hours.
About 2 hours.
About 3 hours.