fly open

The steel door under the staircase flies open and flames pour out.

Rapunzel’s eyes flew open, and she struggled to slice away the hair with her sword, but she was too slow.

Just then the door flew open, and Mother laid eyes on Sydney for the very first time.

After only a quick clatter of keys, the door to the corridor flew open.

After the success of “The Sting,” doors flew open.