Earlier in the day, a chartered plane landed in San Diego with 136 migrants on board, according to a federal Department of Homeland Security official who was not authorized to be named when speaking on the issue.
It was the first flight planned for California under the federal government's effort to ease the crunch in the Rio Grande Valley and deal with the flood of Central American children and families fleeing to the United States.
The government is also planning to fly migrants to Texas cities and another site in California, and it has already taken some migrants to Arizona.
More than 52,000 unaccompanied children have been detained after crossing the Texas-Mexico border since October in what President Barack Obama has called a humanitarian crisis. Many of the migrants are under the impression that they will receive leniency from U.S. authorities.
Another flight was expected to take 140 migrants to a facility in El Centro, California, on Wednesday, said Lombardo Amaya, president of the El Centro chapter of the Border Patrol union. The Border Patrol would not confirm that arrival date.
Associated Press writer Amy Taxin in Santa Ana contributed to this report.