The race is on to get Chinese goods into the U.S. before President Donald Trump's tariffs bite.

At sea and in the sky, the U.S. president's trade war with China has ignited a freight frenzy. Hyundai Merchant Marine Co.'s vessels leaving China for the U.S. are full, deliveries to California ports are surging, and cargo rates for journeys across the Pacific are at a four-year high.

The levies that kick in Monday have amplified the busy pre-holiday season as Chinese manufacturers rush everything from toys to bikes to car parts into American stores before tariffs hit. At Air China Ltd., freight to the U.S. is booming.