The FAA originally said that the 10-day shutdown was declared after cartel drones were spotted in the airspace around the El Paso airport.
The FAA instituted a 6% restriction on air travel due to a growing shortage of air traffic controllers during the government shutdown.
Hundreds of thousands of travelers could face lengthy delays and outright flight cancellations this weekend due to the air traffic cuts.
Burbank was among several airports nationwide experiencing flight delays as the government shutdown leaves air traffic controllers without pay.