This episode follows Heathrow staff racing against the clock to process thousands of passengers arriving from 84 different countries. Airside Safety Officer Glenn and his colleagues work closely with Air Traffic Control to keep Heathrow’s two runways open and clear of debris. Meanwhile, staff from the Animal Reception Centre welcome a variety of weird and wonderful animals – from pet ferrets to a wild tiger. Inside the terminals, Heathrow staff deal with passengers including a man who is stuck living at the airport after being deported from Thailand, and a family whose young relatives have got lost in Arrivals.

This episode follows Heathrow staff struggling to turn around hundreds of arriving planes, and get them back into the air on time. Cleaners, ground staff and flight crew race to get the world’s biggest passenger plane ready for departure. Meanwhile Heathrow prepares to open a £2bn new terminal, and welcomes a very special royal guest. Airport duty manager Andy is called on to defuse a major international protest, and a team of workers battle the elements as they attempt to resurface the runway overnight in time for the first flight of the morning.

This episode follows Heathrow staff trying to process 100,000 departing passengers a day, and get their flights away on time. Dispatcher Callie and Ramp Manager Steve have their plans thrown into chaos by a passenger who disappears after checking on to their flight. In Security, Sundeep and his team have to search an unusually dressed traveller, and deal with a man who is unhappy about having his bag searched. Meanwhile, Heathrow’s extradition team ensures police suspects are put on departing flights, while paparazzi photographer Kate is on the lookout for celebrities flying through the airport.

Heavy fog throws Heathrow into turmoil and new terminal manager Callum is faced with hundreds of angry and stranded passengers stuck overnight at the airport, while visibility has dropped to less than 100m on the airfield and safety officer Chris is forced to marshal planes. Manager Nilam reveals the secrets of one of Heathrow's most exclusive first-class lounges and dispatcher James and his team hunt around the terminal for late passengers for a flight to Pakistan.

An American airline has one of its busiest days as hundreds of people fly to the USA for Thanksgiving, while Heathrow employee Sunita helps a woman who has lost her two-year old daughter. Ground staff use measures to disperse birds from the runway to prevent any collisions with aircraft, resident paramedic Izzy treats a pregnant passenger suffering from serious abdominal pain who is due to fly to Brazil that day and British Airways employees prepare for the inaugural flight of their new £185 million aircraft the Dreamliner.

Storm Imogen causes chaos on the runways and in the terminals, with airside safety officer Simon keeping his eyes peeled for any potentially dangerous debris that could damage the landing planes. In Terminal 4, manager Sunita looks after dozens of passengers whose flight to Delhi has been cancelled, while trainee engineer Elliot prepares to get his hands dirty as he clears a blocked sewage pit - an essential part of the airport's operations that no passenger normally sees.

Passenger Experience Manager Sue does her best to get a passenger to his connecting flight at Gatwick - 38 miles away.

Travellers face the challengers of transferring in the five-square-mile airport, with 200 gates and four terminals.

Problems arise when a flight to New York is cancelled. Meanwhile, snow and ice threaten to close the runways.