Is this sentence correct?

they have flown ; no

they had flown : no

they flew : YES... :simple past.

No. You cannot use past perfect, "had flown," after an earlier event. Here, you need simple past, "flew."

You could use past perfect if it is used to indicate that the flying back to New York took place first. For example, "Before they took their trip to Tillman and Associates, Jack and Emily had flown to New York."

Past perfect shows us that the event is the earlier event in time, when showing the time line of two events. My students always find it confusing.

I hope this helped.

Lady Morgana

English language teacher

the 'had flown' throws me off. but that is because i don't know what comes prior to this sentence. it is right though.

I get how you are using it. I would say use 'flew' but for how you're saying it.. that isn't right.

say, "Jack and Emily had flown back to New York immediately after their trip to Tillman and Associates."

I would put "Jack and Emily flew back to New York".

I would say ................."Jack and Emily flew back to New York"