Air India on Wednesday announced that it is suspending its flights on Delhi-Madrid and Delhi-Birmingham routes from March 16 till further notice due to "operational reasons".

As Pakistan has kept its airspace closed since February 26 due to the Balakot air strike by Indian air force, Air India's expenditure on flights to Europe and the US have significantly increased.

In a tweet, the national carrier said, "Due to operational reasons, the following Air India flights are suspended with effect from March 16, 2019, till further notice."

#FlyAI : Important Update for our valued passengers. pic.twitter.com/NYHAAeIm3W

— Air India (@airindiain) March 13, 2019

The airline then said that AI135 Delhi-Madrid flight and AI136 Madrid-Delhi flight would be suspended.

It added that AI113 Delhi-Birmingham flight and AI114 Birmingham-Delhi flight would also be suspended.

The airline said that AI117 Delhi-Amritsar-Birmingham flight and AI118 Birmingham-Amritsar-Delhi flight would be suspended too.

"We sincerely regret the inconvenience caused to our valued passengers and request passengers to collect full refund," the airline said.

First Published:Mar 14, 2019 6:01 AM IST