Carriers from China to the U.S. and Europe were forced to extract the dubious components, leaving jets grounded and racking up millions of dollars in costs.
A growing number of countries are pushing to make hydrogen a key part of their emissions-cutting strategies, particularly for energy-intensive industries.
Political factions and the powerful German trade union Ver.di opposed the Hamburg deal, saying it would cost jobs and cede control of the port to a foreign company.
The diversions come as European futures jumped on concerns about increased risk to supplies in the Middle East, just as the heating season gets under way.
By 2054, JKIA is expected to handle 32 million passengers and nearly one million tons of cargo, compared to 8.6 million passengers and 367,000 tons of cargo currently.