"Swaraj was scheduled to travel from Kochi to Mallapuram. When she reached the airport she was informed that the helicopter which was to take her there was not allowed to take-off from Thiruvananthpuram despite the flight plan being submitted and approved," BJP spokesperson Rajiv Pratap Rudy said.
The senior BJP leader has been campaigning in Kerala and Tamil Nadu for the last fortnight.
"She was shocked at the disruption of a routine campaign and was compelled to travel from Kochi to Trichur on an unscheduled programme. She also had to cancel the public meeting for BJP's candidate in Tennur assembly constituency," Rudy said.
Rudy was accompanying Swaraj when the incident took place.
"The Prime Minister landed at Kochi naval aerodrome and there was no reason whatsoever to disrupt her chopper movement which was scheduled to land at Kochi civilian airport," he said.
The BJP claimed that when its leaders tried to sort out the matter with authorities, no official was present to answer their queries.
Swaraj reportedly had to cancel some of her engagements and travelled by road.
"Our party's Kerala unit will take up this issue with the Election Commission," Rudy said.
