Deirdre is a main character that appears in Fear The Walking Dead: Flight 462. She is one of the flight attendants aboard Flight 462.
Nothing is known about Deirdre's life from before the outbreak, except that she worked as a flight attendant and was assigned to Flight 462 during the time of the outbreak.
As Marcus, one of the passengers of Flight 462, begins to inquire whether flights have been grounded, Deirdre attempts to control the situation by demanding that he take his seat and that the flight will take off soon.
Deirdre walks down the main aisle, handing out beverages to the passengers. When she arrives at Marcus' seat, Suzanne, his wife, asks for vodka on the rocks, and for two bottles instead of one. She generously complies and gives her the extra bottle. She approaches Anthony and hands him two ginger ale cans without saying anything. He does not acknowledge her, causing Deirdre to frown.
Deirdre is working at the back of the cabin and is startled when Marcus suddenly runs into the bathroom.
Deirdre makes an announcement to the passengers that they are about to make their descent into Phoenix and asks that all tray tables be put away and seats reclined to their original position. After she is done speaking, Connie asks her if she can use the restroom in first class, as Marcus is still in the bathroom. Deirdre asks Suzanne to step aside and begins knocking on the door, requesting Marcus to come out.
Deirdre becomes increasingly frustrated as Marcus is still in the bathroom. Alex's pleas to Deirdre to refrain from opening the bathroom door fall on deaf ears, as she unlocks the door and the unmoving body of Marcus crashes onto the floor.
Deirdre attempts to calm Suzanne, who begins to panic as she believes Marcus is dead. She is perplexed and shocked at the sight of Marcus' bloody wound which has been revealed by Alex.
In an attempt to save Marcus' life, she attempts to revive him using a defibrillator. This is unsuccessful and Marcus later reanimates as a zombie.
She is terrified as Marcus jumps to life and attacks her; Anthony manages to catch Marcus and restrain him, placing him back inside the locked bathroom. However, it is later revealed that Deirdre has been bitten by Marcus on the arm.
As Anthony tries to help Deirdre by giving medical attention to her wound, Alex instructs Anthony to tie her down. Anthony sits Deirdre down, when suddenly there's turbulence. Alex picks up the phone and orders Deirdre to call the captain to command him to land the plane, but she says she's already tried and that the lights are going out in other cities, which means there's no where for the plane to land.
She sadly watches Anthony and Alex attempt to get Suzanne away from the bathroom door. She stares at Suzanne sympathetically as Anthony comforts Suzanne about her husband.
She is visibly shocked and terrified as Marcus viciously bites Suzanne's throat, killing her.
She watches Alex puts down the zombified Marcus, and watches as the airplane's window begins to crack.
Deirdre notes that Suzanne is dying, she is shocked and starts crying when Alex kills Suzanne. Later the window crack that was caused by Anthony's bullet breaks the window.
After the window breaks causing the plane to go into turbulence, she is seen wearing an oxygen mask.
As the plane experiences major turbulence, Deirdre can be seen removing her oxygen mask, aware of the fate of the plane.
It is revealed that Flight 462 broke up and crashed into the Pacific Ocean. Deirdre was among the many passengers to be killed among the impact of the plane. If she wasn't too injured, she most likely succumbed to her wound, and reanimated as a walker but due to the impact of the plane. Its most likely she didn't turn.