"Am flying" is the present continuous tense.
The simple present tense is:
Present tense - flying. Future tense - will fly.
The present tense of fly is:I/You/We/They fly.He/She/It flies.The present participle is flying.
The present tense of flew is:I/You/We/They fly.He/She/It flies.The present participle is flying.
Flying/flies
Flying/flies
Flying.
Past tense: The flock of birds was flying. Present tense: The flock of birds is flying. (flock is a collective noun)
Flying, or Flies.
Flying/Flies.
The present perfect continuous tense of fly is:I/You/We/They have been flying.He/She/It has been flying.
Past tense - flew (simple) & flown (past participle) Present tense - I/you/we/they fly. He/she/it flies. The present participle is flying. Future tense - will fly.
The word flying is the present participle, present tense of the verb to fly. The present participle of the verb is also an adjective (a flying carpet), and a gerund, a noun form (Flying has become a very aggravating form of travel.)