The 72-year-old, who had collapsed and was vomiting and sweating, became ill after arriving on a Gambia Bird jet on Saturday and later died in hospital.
The Daily Mail reported the plane, which had 128 passengers on board, was quarantined as
officials tracked those who had been in contact with the woman.
However, on Sunday night the Department of Health said that tests on the woman proved negative for Ebola.
There is no cure for the virus, which is spread by close contact and kills between 25 and 90% of its victims.
The recent outbreak in West Africa has killed 256 people in Sierra Leone and 826 have died in West Africa since February.
The plane carrying the woman travelled from Freetown, the capital of Sierra Leone, and stopped at Banjul in The Gambia before landing in Gatwick at 8.15am on Saturday after a five-hour flight.
A Public Health England spokesman said the woman’s symptoms had suggested Ebola was very unlikely but the tests were carried out as a precaution.
An airport worker told the Daily Mirror the woman was “sweating buckets and vomiting”.
“Paramedics arrived to try to help her. The next thing everybody was there… emergency crews, airfield operations, even immigration.
“They closed down the jet bridge and put the aircraft into quarantine.
“They took everyone’s details, even the guy who fuels the aircraft.”
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