The elderly passenger, a heart patient, complained of "mild discomfort and breathlessness" shortly before the Sunday flight -- AI 113 -- was scheduled to land in Birmingham.
The flight attendants sought medical assistance on the public announcement system and four doctors travelling in the flight helped to bring the situation under control.
The patient was attended to by paramedics after the flight landed in Birmingham.
Pilot-in-command Nivedita Bhasin tweeted that timely intervention of flight attendants and the doctors helped avoid a flight diversion.
In another tweet, Bhasin added that the passenger was a heart patient and complained of "discomfort and breathlessness" and that the cabin crew were "extremely vigilant" and alerted the doctors.
Air India's AI 113 took off from Delhi at 1.15pm on Sunday and landed at Birmingham as per its schedule at 5.15pm local time.
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