FAA's order to reduce flights at airports amid shutdown is in effect. What we know

The Federal Aviation Administration's order to cut flights during the ongoing government shutdown took effect Friday morning.

So far, hundreds of flights have been called off nationwide, according to flight tracking site FlightAware.

Airports in Chicago, Atlanta, Denver, Dallas and Phoenix led the way with the most disruptions, FlightAware told the Associated Press.

Meanwhile, air travelers with weekend plans can only sit and wait to learn if their flights will take off as scheduled. And airlines are planning to cancel flights into the weekend, telling passengers to check apps to learn their flight status.

Many of the routes cut on Friday were shuttle flights in the Northeast and Florida along with those between Dallas and smaller cities, the AP reported, citing aviation analytics firm Cirium.

The AP noted that the FAA said the reductions would start at 4% and ramp up to 10% by Nov. 14. They are to be in effect between 6 a.m. and 10 p.m. and impact all commercial airlines.

RELATED: FAA reduces air traffic by 10% at 40 airports - See the list

Delta Air Lines told the AP that it would reduce about 170 flights Friday, and American Airlines planned to cut 220 a day through Monday.

The FAA said the reductions would start at 4% and ramp up to 10% by Nov. 14. They are to be in effect between 6 a.m. and 10 p.m. and impact all commercial airlines.

FAA officials selected 40 airports across multiple states, including locations in Atlanta, Dallas, Denver, Los Angeles and Charlotte, North Carolina, according to the order.

Which airports are reducing flights?

Here's a complete list of airports by state and airport code that are having flights reduced by the FAA.

Alaska

• ANC Anchorage International

Arizona

• PHX Phoenix Sky Harbor International

California

• LAX Los Angeles International
• OAK Oakland International
• ONT Ontario International
• SFO San Francisco International
• SAN San Diego International

Colorado

• DEN Denver International

Florida

• FLL Fort Lauderdale/Hollywood International
• MCO Orlando International
• MIA Miami International
• TPA Tampa International

Georgia

• ATL Hartsfield-Jackson Atlanta International

Hawaii

• HNL Honolulu International

Illinois

• MDW Chicago Midway
• ORD Chicago O`Hare International

Indiana

• IND Indianapolis International

Kentucky

• SDF Louisville International

Maryland

• BWI Baltimore/Washington International

Massachusetts

• BOS Boston Logan International

Michigan

• DTW Detroit Metropolitan Wayne County

Minnesota

• MSP Minneapolis/St Paul International

Missouri

• SDF Louisville International

Nevada

• LAS Harry Reid International Airport

New Jersey

• EWR Newark Liberty International
• TEB Teterboro

New York

• JFK New York John F Kennedy International
• LGA New York LaGuardia

North Carolina

• CLT Charlotte Douglas International

Ohio

• CVG Cincinnati/Northern Kentucky International

Oregon

• PDX Portland International

Pennsylvania

• PHL Philadelphia International

Tennessee

• MEM Memphis International

Texas

• DAL Dallas Love
• DFW Dallas/Fort Worth International
• HOU Houston Hobby
• IAH George Bush Houston Intercontinental

Utah

• SLC Salt Lake City International

Virginia

• IAD Washington Dulles International

Washington

• SEA Seattle/Tacoma International

Washington, D.C.

• DCA Ronald Reagan Washington National

Flight delays during shutdown

Dig deeper:

This week, more than 1,000 flight delays within, into or out of the U.S. have been delayed, with dozens of flights canceled, according to FlightAware.com.