Wang Wenbin says China must have responded "responsibly and professionally" to the US flights, without giving more details, Reuters reports.
The claim about the US flights comes just over a week after the US shot down what is suspected to be a Chinese spy balloon off the coast of South Carolina.
According to China, the balloon was used for research purposes and it has accused the White House of overreacting.
The US Department of Defense has not yet commented on China's claims of US balloons in Chinese airspace, but confirms it has been in contact with Beijing regarding the Chinese balloon that was shot down.
"Contacts with China regarding the balloon have been made," Deputy Defense Minister Melissa Dalton said on Sunday, TT reported.
Adjusted radar
In the past week, three more unidentified objects have been spotted in North American airspace and shot down.
China says it has no information about the latest three objects, Reuters reports.
The US military has not yet been able to identify what the three latest objects are or where they came from.
"We call them objects, not balloons, for a reason," said Glen VanHerck, a general in the US Air Force.
After the discovery of the Chinese balloon, the US military has adjusted its radar for flying objects, to be able to detect smaller and differently shaped objects than fighter jets and missiles.
Whether the increased number of detections, and shootings, can be linked to the adjustment has not been determined, reports Reuters.
"The threat picture is changing"
On Monday, Britain announced that it is reviewing its security procedures in the suites after the suspected Chinese surveillance balloon.
- Britain and its allies will review what these airspace violations mean for our security.
This development is another sign of how the global threat picture is changing for the worse, says British Defense Minister Ben Wallace, to the Telegraph newspaper.
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John Blaxland, professor of international security and intelligence studies at the Australian National University, believes that balloons can have many advantages over drones and satellites for espionage.