(CNN) — Delays and cancellations are affecting major airports across the country as the government shutdown — the longest in history — drags on.

Air traffic controller shortages have caused issues at numerous airports since the shutdown began more than a month ago, with ripple effects hitting flights almost everywhere. Now, the government has promised it will “reduce” air traffic at all the major airports because of the shutdown, beginning Friday, November 7.

Some US airlines, including Delta and United, are waiving fees for customers who want to change or cancel their plans because of Friday’s looming cuts. Passengers should check with their carriers for the latest on airlines’ plans to mitigate disruptions.

Keep in mind that in the United States, when an airline cancels your flight, y

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