Some US importers are unaware that the travel ban for passenger flights from Europe will impact their air cargo shipments. The reality is that over 60% of air cargo is carried by passenger aircraft. As a result of the travel ban from Europe to the US, shippers are competing for space on a handful of freighter aircraft, pushing up rates, delaying cargo and diverting traffic through non-European airlines.

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https://www.wsj.com/articles/u-s-travel-ban-is-expected-to-snarl-trans-atlantic-airfreight-11584040963