Which is more important to you: cost or transit time? Is sustainability a key metric for your business? How far out do you plan your shipments? These crucial questions can determine whether ocean freight or air freight is right for you.
As with most business decisions, information is essential. Choosing between freight modes is a complex yet important step toward building a successful supply chain, and the more intelligence you have, the more likely it is that your goods will arrive on the timeline and at the price that are best for your business. And sometimes, conventional wisdom might not lead to the best outcome. That’s why we’ve broken down the factors shippers should weigh when deciding between ocean freight and air freight.
Ocean freight is the more common choice among shippers. In fact, air represents less than one percent of international trade by weight, but represents more than one-third by value. Here’s why:
Cost: While a number of factors contribute to the total cost of any given shipment, ocean freight typically has a much lower sticker price. Unlike air freight, which uses chargeable weight to determine cost, ocean carriers charge by cargo volume for small shipments, and by container size (most commonly 20’ and 40’) for larger shipments. In general, ocean is best for:
As cargo becomes smaller and lighter, the price difference between air and ocean may shrink.
Environmental impact: As environmental protection is rapidly becoming a top concern globally, businesses must understand and reduce their carbon footprints.
The International Transport Forum reports that trade-related freight transportation accounts for roughly 7% of global emissions. And according to the “polluter pays principle,” a fundamental principle in U.S. environmental law, the polluter should maintain responsibility and pay for damage done to the environment.
“The future of low-emissions freight transport lies in the nexus of smart policy, fuel efficiency and innovation on systems, space, and data. Technology will provide about 70% of the possible CO2 reductions in 2050. The rest will come from doing things differently, and this is where there is a lot of potential.”
–International Transport Forum Secretary, General Jose Viegas
Not only is ocean freight cheaper for shippers, it has a much lower cost on the environment. According to MIT, long-haul air freight generates 47x as much greenhouse gas emissions as ocean freight, per ton-mile. Replacing a percentage of air shipments with ocean freight is an easy way to reduce carbon emissions, and it’s a crucial step for businesses interested in sustainability.
If you’re looking for an easy way to analyze and reduce carbon emissions on a shipment-level, check out Flexport.org.
Read Flexport CEO Ryan Petersen’s take on Using Data to Manage Carbon Emissions in Global Transportation
These are the primary factors that lead many shippers to opt for air:
Speed: Air freight is significantly faster than ocean freight. Moving goods by sea can take up to a month, and your goods can take three days to unload at port. Air freight takes as few as 36 hours from origin to destination, depending on distance. This often makes air the perfect solution for:
Ease and reliability: Fewer days of travel time lead to fewer headaches. While an issue on the sea could cause significant delays lasting days, weeks, and even months, air freight rebounds quickly. If weather or other factors delay your air shipment, there’s usually an alternate route or flight available within 24 hours. Once cargo is loaded on a plane, you know precisely when it will arrive at the corresponding airport. This makes it much easier to coordinate getting that cargo to your final destination.
Also, most countries have streamlined customs and other paperwork requirements for air. General processes for pricing, booking, and collecting documents are more streamlined, as every player is optimized for speed.
Related blog post: Bringing Predictability to Air Freight
There are countless considerations that go into deciding which mode of freight transport is best for a given shipment, and often times, businesses rely on a combination of both ocean and air. Regardless of a company’s size, the key to consistent, successful freight shipments is a data-driven forwarder with a client-first mindset.
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