。
It seems the flight is running late.
Literal
Airplane [possessive-の] time [subject-が] is-delayed [apparently-らしい].
~てる is the casual contraction of ~ている (ongoing state). ~らしい adds hearsay/inference — the speaker hasn't confirmed this directly but is relaying what they've heard or surmised. 飛行機の時間 ('airplane's time') is a casual way to refer to the flight schedule.