That is why he was late for an hour.

那就是他迟到一个小时的原因。

youdao

I don't realize I was late for an hour.

我没有意识到我迟到一个小时。

youdao

And so it goes. I was once on an hour long meeting where this happened for the first 15 minutes, which made me late for the next meeting where I caused it to happen again.

就是这种状况，我曾经参加过一个持续了一小时的会议，前十五分钟一直都在处理类似的事情，这让我没能赶上参加下一个会议，而且因为迟到，我也导致了类似状况的发生。

youdao

The American Airlines spokesman said the plane was safe and that the flight departed about an hour late for Chicago with a new cabin crew.

WSJ: Flight Attendant Causes a Scare on Plane

In the end Mr Huhne was nearly half an hour late for his announcement because he had been speaking in the opposition day debate in the Commons on the Blue Tongue outbreak.

BBC: Sketch

The senator was a little more than an hour late for his scheduled 1 p.m. speech in Fanueil Hall in Boston, Massachusetts, but it was the 3.5 million deficit in popular votes and the lack of 18 electoral votes that turned the breezy quip serious.

CNN: Regret, no remorse in Kerry's call for unity