Hong Kong (CNN Business) British Airways pilots have voted by a big majority to strike, escalating a pay dispute with the airline that could throw the summer travel season into disarray.

Members of the British Airline Pilots Association working for the airline voted 93% in favor of a strike action, the union announced Monday. It said 90% of its BA members took part in the ballot.

The union said it does not yet have any dates for a potential strike action, adding in a statement that the airline will attempt to stop the action by seeking an injunction in Britain's high court Tuesday.

If a strike goes ahead, it would be the first by BA pilots since the 1970s.

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