U.S. airlines spent $6.66 billion on jet fuel in May

U.S. airlines spent $6.66 billion on jet fuel in May, the second straight month fuel costs exceeded $6 billion, according to government data released Tuesday. The figure was 84 percent higher than May 2025. Carriers used 1.627 billion gallons, down 0.6 percent from a year earlier.

The Bureau of Transportation Statistics reported that the average price paid was $4.09 per gallon, down slightly from $4.11 in April but 85 percent above the $2.21 paid in May 2025. April spending reached $6.47 billion.

Price and supply factors Higher year-over-year costs stemmed mainly from elevated prices rather than increased volume. The rise followed the start of conflict in the Middle East earlier this year and the resulting disruption of shipping through the Strait of Hormuz.

Fuel prices have eased from spring peaks after the U.S. and Iran reached an interim ceasefire agreement. Three tankers were struck by projectiles in the strait on Tuesday, according to the British military, and the U.S. revoked a license that had allowed Iranian oil sales under the agreement.

Industry response and outlook Airlines worldwide have raised fares and fees and trimmed flight schedules in response to the cost increase. Fuel remains one of the largest operating expenses for carriers. Delta Air Lines is scheduled to report second-quarter results on Friday, beginning a round of earnings releases from U.S. carriers.

The average price for a gallon of jet fuel on Monday across Chicago, Houston, Los Angeles and New York was $2.90, according to the Argus U.S. Jet Fuel Index.