With crude hitting a new high of over $117, domestic airlines have warned they will have no option but to increase surcharge if jet fuel becomes dearer this month-end. The industry fears a 3-4% hike this time round. Airlines have make it clear that only reduction of tax rates by states, can help avert another hike in surcharge. Earlier this month, the uniform fuel surcharge of Rs 1,650 per domestic ticket was raised to Rs 1,800 for short flights and Rs 2,000 for medium ones. If taxes levied on fuel don't change, airlines