Largest and Busiest Cargo Airports in the US for Air Freight

Some airports dominate because they are express parcel superhubs. Others lead because they connect US businesses with Latin America, Europe, or Asia. That distinction matters. A cargo airport that is strong in overnight parcel operations does not always serve the same role as an airport built around international general cargo, perishables, pharmaceuticals, or high-value manufacturing freight. FAA annual all-cargo landed-weight data and ACI North America’s 2024 traffic rankings show that Memphis, Anchorage, Louisville, Miami, Los Angeles, and Chicago remain the most important US cargo gateways, although their roles differ significantly.

Why These Airports Matter to Shippers

The biggest cargo airports influence more than volume rankings. They affect airline capacity, warehousing density, customs support, onward trucking options, and how quickly freight can connect to inland US destinations or overseas markets. When businesses compare air freight services with alternatives such as air express or ocean shipping, these hubs are often the operational backbone behind the quote. For urgent or high-value shipments, airport choice can be as important as airline choice.

1. Memphis International Airport (MEM)

Memphis is the standout name in US cargo aviation. According to ACI North America, Memphis was North America’s busiest cargo airport in 2024 with 3,754,236 metric tons handled. The airport authority also reported that Memphis handled approximately 4.4 million US tons of cargo in fiscal year 2024, remaining the largest cargo airport in the United States and the second largest in the world by its cited benchmark.

The airport’s strength comes largely from its role as the FedEx Express superhub. That makes Memphis especially important for overnight domestic distribution, e-commerce, healthcare shipments, and time-critical freight. It is less about being a classic coastal import gateway and more about speed, network reach, and express connectivity across the US and international parcel lanes.

For shippers, Memphis represents the US air cargo system at its most time-sensitive. If the cargo profile is urgent, lightweight relative to value, or tied to fast replenishment cycles, the economics often favor air routing through hubs like MEM. Businesses evaluating that tradeoff should also understand chargeable and volumetric weight because the way air freight is priced can quickly change the total landed cost.

2. Ted Stevens Anchorage International Airport (ANC)

Anchorage is different from Memphis but just as important strategically. ACI North America ranked Anchorage second in North America in 2024 with 3,699,284 metric tons of cargo. FAA data also shows Anchorage at the very top of US all-cargo airports by landed weight in recent annual reporting, reflecting its long-standing role as a technical and trans-Pacific cargo hub.

Anchorage benefits from geography. Located on major trans-Pacific flight paths, it functions as a natural stopover and transfer point between Asia and North America. That makes it crucial for long-haul international cargo, freighter operations, and fuel or crew stop strategies. Its importance is not always visible to end customers because some freight passing through Anchorage is transiting rather than terminating in Alaska or the mainland US market. Alaska’s airport system reported strong cargo growth through October 2024 as well, underscoring continued momentum at ANC.

For global trade, Anchorage shows how cargo rankings are not only about destination demand. They are also about network design.

3. Louisville Muhammad Ali International Airport (SDF)

Louisville has become one of the most important logistics airports in the world. ACI North America ranked SDF third in North America in 2024 with 3,152,969 metric tons of cargo, while the airport said it handled more than 6.95 billion pounds in 2024, up almost 16% year over year.

Its role is closely tied to UPS Worldport, one of the most influential parcel and express sorting operations globally. Like Memphis, Louisville is a core express-freight airport, but its recent growth highlights how e-commerce, healthcare logistics, and rapid replenishment continue to shape airport cargo volumes. The airport also noted substantial ongoing airfield investment to support future cargo expansion.

For shippers comparing air freight with slower modes, Louisville is a reminder that airport scale often translates into stronger schedule frequency, better integrator connectivity, and more resilient express options.

4. Miami International Airport (MIA)

Miami stands apart from the integrator-heavy hubs because it is the leading US international freight gateway. MIA states that it is America’s number one airport for international air freight and number three for total freight, handling a record 3.4 million tons of freight in 2024 on its cargo development page. Miami-Dade also reported nearly 3 million tons of cargo in 2024 in a separate 2025 announcement, while ACI North America ranked MIA fourth in North America in 2024 with 2,753,450 metric tons. The differences reflect different reporting lenses and should be understood as source-specific figures rather than contradictions.

Miami is especially important for trade with Latin America and the Caribbean, along with perishables, pharmaceuticals, fashion, electronics, and high-value exports. For businesses importing or exporting internationally, MIA is one of the most relevant airports because it combines strong freighter activity with international passenger belly cargo and customs infrastructure.

This is also where documentation quality becomes critical. On international air cargo lanes, shipment delays are often caused less by airport congestion and more by paperwork, commodity compliance, or customs issues. If you are preparing a shipment, having the right shipping documents and checking realistic lead times with the transit time calculator can be just as important as choosing the right service.

5. Los Angeles International Airport (LAX)

Los Angeles remains one of the biggest US cargo airports because Southern California is one of the largest import, distribution, and consumption markets in the world. ACI North America ranked LAX fifth in 2024 with 2,174,455 metric tons of cargo.

LAX matters for trade with Asia, electronics, apparel, consumer goods, aerospace freight, and cross-border e-commerce flows into the western United States. Unlike Memphis and Louisville, its cargo role is tied more directly to international trade gateways and the surrounding industrial economy than to a single express carrier model. That gives LAX a broader mix of freight profiles, including scheduled airline cargo and general international freight.

For importers, LAX often comes into the conversation when balancing speed against cost. Some shipments that are too urgent for ocean freight but not urgent enough for premium courier solutions may still work well through standard air freight into Los Angeles, especially when the final delivery point is in the western US.

6. Chicago O’Hare International Airport (ORD)

Chicago O’Hare rounds out the top tier of US cargo airports. ACI North America ranked ORD sixth in 2024 with 2,074,006 metric tons handled.

O’Hare’s strength comes from its central US location, enormous passenger and freighter network, and broad onward trucking reach into the Midwest. It is one of the most strategically flexible airports in the country because it supports both domestic distribution and international freight consolidation. For shipments moving between the coasts and inland markets, Chicago often acts as a practical middle point for air cargo distribution.

What These Rankings Tell Importers and Exporters

The largest cargo airports in the US fall into two broad categories.

The first category is integrator and express hubs, led by Memphis and Louisville. These airports excel at fast parcel and express networks, especially for overnight and deferred air cargo. The second category is international trade gateways, led by Miami, Los Angeles, and Chicago, where freight volumes are closely tied to import-export flows, airline networks, customs operations, and regional demand. Anchorage overlaps both worlds because it is a major technical and intercontinental transfer point.

For shippers, that means the “best” airport depends on the cargo profile:

• urgent parcel and express distribution often aligns with Memphis or Louisville
• Latin America-focused air freight often aligns with Miami
• trans-Pacific and West Coast distribution often align with Los Angeles
• Midwest distribution and broad network optionality often align with Chicago
• long-haul trans-Pacific freighter networks often rely heavily on Anchorage

Choosing the Right Air Freight Strategy

Airport rankings are useful, but they are only one part of the decision. A strong routing plan should also consider airline capacity, commodity type, customs requirements, inland delivery time, dimensional weight, and the cost gap between air and ocean. In many cases, businesses should compare air freight with full container load shipping or less-than-container load shipping when the shipment is less time-critical and more cost-sensitive.

The biggest cargo airports in the US show how freight moves when speed matters. But the smartest shipping choice is usually the one that fits your cargo profile, service level, and total landed cost, not simply the airport with the highest tonnage.

Conclusion

Memphis, Anchorage, Louisville, Miami, Los Angeles, and Chicago remain the defining cargo airports in the US, but they do not all serve the same purpose. Memphis and Louisville dominate express networks. Miami leads international freight connectivity. Los Angeles and Chicago anchor major trade and distribution markets. Anchorage remains essential to trans-Pacific cargo flows. Together, they form the backbone of US air cargo infrastructure and help explain how goods move quickly across domestic and global supply chains.

External References

• FAA Passenger Boarding and All-Cargo Data for U.S. Airports
• ACI North America 2024 Airport Traffic Rankings
• Miami International Airport Cargo Service Development
• Miami-Dade 2024 MIA traffic announcement
• Louisville Muhammad Ali International Airport cargo ranking update
• Memphis International Airport FY2024 annual report