Airlines are expected to cancel 6% of their flights at 40 high-traffic airports on Tuesday in compliance with the Federal Aviation Administration mandate amid the government shutdown, despite the Senate passing a preliminary agreement to end the impasse.

As of Tuesday morning, more than 1,100 flights within the U.S. had already been canceled, according to the flight tracking website FlightAware , and more than 850 flights had been delayed. United Airlines posted a list of its canceled flights for Tuesday and Wednesday on its website . The lengthy list covers flights all day and across the entire country, starting at 6 a.m. and lasting until almost 9 p.m.

The affected airports are in major cities such as Chicago, the New York area, Washington, D.C., Atlanta and Dallas-Fort Worth. T

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