New Delhi, July 8 -- U.S. airlines spent $6.66 billion on jet fuel in May, the second straight month that fuel costs topped $6 billion, according to government data released Tuesday.

The May figure was 84% higher than a year earlier. Airlines spent $6.47 billion on fuel in April, the Bureau of Transportation Statistics said.

The higher year-over-year spending has been driven mostly by pricier jet fuel rather than a significant increase in how much of it airlines consumed. U.S. carriers used 1.627 billion gallons in May, down 0.6% from May 2025. Consumption was also slightly lower in April compared with a year earlier.

The average price airlines paid for fuel in May was $4.09 per gallon, down slightly from $4.11 in April but 85% higher ...