This dream may symbolize your longing for your deceased husband and your desire to see him again. The airport setting could represent a transitional phase in your life, as airports are often associated with journeys and change. The fact that you were asleep and dreaming within the dream could suggest that you are still processing your husband’s passing and trying to come to terms with it. The bed being the only thing in the large area could symbolize your feelings of loneliness and emptiness without your husband. The man walking towards you from the sliding glass door could represent your husband’s spirit or presence, as he is coming from a place of transition (the door). His lack of communication and eye contact could indicate that he has moved on and is at peace, but is still watching over you. His departure through a different door could symbolize his journey to the afterlife. Overall, this dream may be a manifestation of your subconscious longing for your husband and a way for you to process your grief and find closure.