A group of U.S. budget carriers is seeking $2.5 billion in government assistance to combat rapid increases in fuel costs spurred by the U.S. war with Iran.

American Airlines CEO Robert Isom “looks forward to doing more with Alaska going forward” but is not confirming immediate changes to their existing relationship.

Aeromexico is working closely with its joint venture partner Delta Air Lines to ensure it has access to fuel on long-haul international routes.