Kansas City police are investigating after human remains were found at the Wheeler Downtown Airport.
Glider crash happened in front of thousands of spectators.
The Federal Aviation Administration said the closures are being delayed in order to deal with legal challenges.
Southwest Airlines flight collided with another plane while leaving airport gate, Saturday morning.
Supporters can find classroom project they want to help fund by going to http://www.donorschoose.org.
Officials at Lambert International Airport says the bulk of its cancellations and delays will be this morning.
More than two dozen St. Louis arrivals and departures had been cancelled by mid-morning.
Keith Calhoun, the Lebanon plant manager with Emerson Electric, said a new hub at St. Louis would mean less time, less money and more efficiency. Currently his goods take off from Chicago.
The Joplin Regional Airport will continue to provide federally subsidized airline service for two more years, but now passengers will fly on slightly larger jets.
Minor delays caused at Lambert on one of the busiest travel days of the year.