Time-Flight is the seventh and final serial of the 19th season in the British science fiction television series Doctor Who, which was first broadcast in four twice-weekly parts from 22 March to 30 March 1982.

The TARDIS crew – the Doctor, Nyssa, and Tegan – are still mourning the loss of their former companion Adric (Earthshock) when the TARDIS materialises at Heathrow airport in contemporary times, disrupting flight patterns. After clearing his name, the Doctor is enlisted by Department C19 to track down a missing Concorde, Golf Victor Foxtrot, its crew, and its passengers after it had suddenly disappeared on approach into London.

The TARDIS is loaded aboard a second Concorde, Golf Alpha Charlie, and the Doctor and his companions meet Captain Stapley and his crew. Stapley pilots the Concorde to follow the same flight path as Victor Foxtrot and appears to land safely back at Heathrow. The Doctor, monitoring the flight in the TARDIS, reveals that they have fallen into a "time contour", and have arrived 140 million years in Earth's past. A strong psychokinetic field is projecting the illusion of Heathrow to the humans. Outside, they spot Victor Foxtrot, its crew, and its passengers, who are under the assumption they are at Heathrow. Unbeknownst to them, however, they are actually performing slave labor under the control of Plasmatons, humanoid blobs of protein held together by the psychokinetic field.

One of the passengers, Professor Hayter, reveals that he has seen through the illusion and explains that a mysterious Oriental-like mystic named Kalid is controlling the psychokinetic field from a nearby Citadel, brainwashing his fellow passengers to try to break into a central chamber contained at the Citadel. Soon after learning of these events, they find the passengers taking the TARDIS back to the Citadel.

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