Mumbai, April 10 -- Ahead of the summer travel season and amid Vistara flight disruptions, travellers might have to spend more on key routes as airfares are expected to surge 20-25 per cent.

At a time when peak summer travel period is round the corner, the airline industry is grappling with challenges in scaling up capacity to match demand and are even using larger aircraft for domestic travel.

Some of the key routes that are expected to see higher fares are Delhi-Goa, Delhi-Kochi, Delhi-Jammu and Delhi-Srinagar. Tata-owned Vistara Airlines on Sunday said that they are scaling back their operations by about 25 to 30 flights every day, which makes up to about 10 per cent of their current capacity.

The airlines said that the flight cance...