I was looking through different airport flight boards to see how they convey information, and I think this is one of the best ones. This has the right amount of symbols (flags), time reading convenience, and the correct use of colour for coding remarks. This kind of a visualization is crucial when multiple people are checking for information in a time crunch.

Source: https://www.shutterstock.com/video/clip-13810775-stock-footage-airport-departure-board-orange-and-blue-videos-in-file-airport-departure-board-showing-time.html