time flies

time flies idiom
Time passes quickly, as in It's midnight already? Time flies when you're having fun, or I guess it's ten years since I last saw you—how time flies. This idiom was first recorded about 1800 but Shakespeare used a similar phrase, “the swiftest hours, as they flew,” as did Alexander Pope, “swift fly the years.”

The American Heritage® Dictionary of Idioms by Christine Ammer. Copyright © 2003, 1997 by The Christine Ammer 1992 Trust. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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