The women were forcibly removed from the plane and the 12.10pm flight was delayed for two hours, departing Heathrow at 2.11pm.
The Metropolitan Police are investigating the incident and said the women made “counter allegations of affray”, the Telegraph reported.
“Shortly after 12.45pm on Monday, October 28, police at Heathrow were made aware of an incident involving two women waiting to board a plane in Terminal 5,” a spokesman told the Sun.
Someone claiming to be an insider at the airline told the Sun the situation was “extraordinary” and the women were removed to avoid further violence.
“With the US presidential election so close, tensions are sky high. Airline crew could not run the risk of a full-scale punch-up at 30,000ft.”
British Airways does not appear to have any regulations on what passengers cannot wear during a flight and the airline apologised to customers for the delay and said it continued the service as quickly as possible.
This isn’t the first time a MAGA cap or other Trump merchandise has caused issues in public.
In June 2020, an Auckland primary school teacher was accused of being a “racist” after wearing a MAGA cap to a Black Lives Matter protest.
Months before that, former National leader Todd Muller received criticism for displaying a MAGA cap in his office. Meanwhile, in November 2020, an Auckland bar attracted heat for hosting a US election party attended by MAGA-hat-wearing Trump supporters.