Overview
Miami International Airport (MIA) is a public commercial airport sited on 3,230 acres of land near downtown Miami, within Miami-Dade County, Florida. According to the Miami-Dade Aviation Department's official airport facts page, the airport was founded in 1928 and is documented as the largest U.S. gateway for Latin America and the Caribbean by air traffic volume. MIA is owned and operated by Miami-Dade County through its Aviation Department, placing it within the jurisdiction of Miami-Dade County government rather than the City of Miami's municipal administration.
In calendar year 2024, MIA recorded nearly 56 million passengers and 3 million tons of cargo — its third consecutive record year for passenger traffic and fifth consecutive record year for cargo volume, as announced by Miami-Dade County Mayor Daniella Levine Cava in a February 24, 2025 official county press release. Per rankings published by the Airports Council International and cited in a 2026 Miami-Dade County legislative document, MIA ranked second among all U.S. airports for international passengers and first nationally for international freight in 2024. These rankings position MIA as one of the most consequential international aviation facilities in the United States, anchoring Miami's role as South Florida's primary aviation hub and a gateway to the Americas.
Operations and Rankings
Miami International Airport's 2024 performance figures, as documented in the February 24, 2025 Miami-Dade County press release, place MIA among a small number of U.S. airports that consistently process tens of millions of international travelers annually. The airport's cargo operations are particularly significant: its ranking as first in the United States for international freight in 2024, per Airports Council International figures cited in a 2026 Miami-Dade legislative document, reflects the airport's central role in the flow of perishable goods, pharmaceuticals, and manufactured products between North America and Latin America and the Caribbean.
The Miami-Dade Aviation Department documents MIA's founding year as 1928 and its current land footprint as 3,230 acres near downtown Miami. The airport is one of the few major U.S. airports located in close proximity to a dense urban core, a geographic characteristic that both drives its connectivity value and shapes the infrastructure requirements for ground access. The five-year consecutive cargo records through 2024 reflect sustained demand from Miami's documented position as the primary air freight conduit between the United States and Latin American and Caribbean markets.
Ground Access and Transit Connections
Miami International Airport is served by multiple ground transportation modes connecting the airport to the broader Miami-Dade transit network. Miami-Dade Transit's Metrorail — a 25-mile dual elevated heavy-rail line described in the Miami-Dade DTPW 2024 Transit Development Plan — provides a direct rail connection between MIA and downtown Miami, with the airport station linking passengers to the broader Metrorail corridor. The Metrorail recorded approximately 50,300 average weekday riders in 2025, per the same Transit Development Plan.
At MiamiCentral Station in downtown Miami, Metrorail connects with Brightline inter-city passenger rail, which commenced Miami-to-Orlando revenue service on September 22, 2023, as documented by Railway Technology. Tri-Rail commuter service also began operating into MiamiCentral in 2024, as described in Brightline's official press room, extending rail access to Broward and Palm Beach counties. The MiamiCentral complex, located within the Miami Worldcenter development, integrates transit access with 130,000 square feet of retail and a dining marketplace.
The Miami-Dade County Metromover — a fare-free automated people-mover operating 21 stations across a 4.4-mile dual elevated track between Brickell's Financial District Station and the School Board Station in the Omni area — provides circulation within downtown Miami and connects to Metrorail, extending the reach of the transit network that airport passengers and employees access. The Miami-Dade Department of Transportation and Public Works (DTPW) administers all of these transit services, as described in the Miami-Dade County FY 2025-26 Proposed Budget for Transportation and Public Works.
Governance and Administration
Miami International Airport is operated by Miami-Dade County, not by the City of Miami. The Miami-Dade Aviation Department functions as the airport's managing authority, reporting to Miami-Dade County's executive government. As of the February 24, 2025 official county press release, Miami-Dade County Mayor Daniella Levine Cava serves as the county's executive officer and was identified in that role when announcing MIA's 2024 record performance figures.
Miami-Dade County operates under a separate governmental structure from the City of Miami. The county's Board of County Commissioners, alongside the county mayor, exercises oversight of MIA through the Aviation Department. Ground transportation serving the airport falls under the county's Department of Transportation and Public Works (DTPW), which administers Metrorail, Metromover, Metrobus, the South Dade TransitWay, and Special Transportation Services, as described in the Miami-Dade County FY 2025-26 Proposed Budget. The People's Transportation Plan (PTP) surtax — a dedicated county funding mechanism — contributed $264.339 million to DTPW in the FY 2025-26 budget, an increase of $39.617 million over the prior year's adopted budget, funding transit operations and debt service on Metrorail infrastructure that directly serves airport ground access.
Recent Developments
On February 24, 2025, Miami-Dade County Mayor Daniella Levine Cava formally announced MIA's record 2024 passenger and cargo performance and provided an update on a concurrent modernization plan, as documented in the official county press release. The announcement confirmed that 2024 marked MIA's third consecutive passenger record and fifth consecutive cargo record, underscoring a sustained growth trend at the airport through the mid-2020s.
On the ground transit side, the Miami-Dade Department of Transportation and Public Works has been conducting ongoing single-tracking maintenance on Metrorail during weekends and weekday evenings after 8 p.m. to upgrade tracks and guideway infrastructure for improved safety and reliability — work that affects the rail corridor connecting MIA to downtown Miami. DTPW also announced enhanced Metrorail service for Inter Miami CF gamedays at NU Stadium at Miami Freedom Park, beginning with the inaugural match on April 4, 2025, reflecting expanded use of the Metrorail line that serves the airport corridor. A 2026 Miami-Dade County legislative document formally documented MIA's Airports Council International rankings, placing the airport's national standings on record for county legislative purposes.
Regional Transportation Context
Miami International Airport operates within a regional transportation network that includes PortMiami — the Dante B. Fascell Port of Miami — situated on a man-made island in Biscayne Bay and connected to downtown by the Port of Miami Tunnel. According to the Miami-Dade County FY 2025-26 Adopted Budget Five-Year Forecast, PortMiami processed approximately 8.6 million cruise passengers in FY 2024-25, with cargo volume projected at 1.177 million twenty-foot equivalent units (TEUs) in FY 2025-26. Together, MIA and PortMiami constitute Miami-Dade County's two dominant international trade and travel gateways, each handling volumes that rank among the highest in the United States in their respective categories.
Miami-Dade County borders Broward County to the north and Monroe County to the southwest. The Tri-Rail commuter system, which began service into MiamiCentral Station in 2024 per Brightline's press room, extends transit connectivity from MIA's Metrorail connection northward through Broward County and into Palm Beach County. The South Dade TransitWay — a 20-mile bus rapid transit alignment described in the Miami-Dade FY 2025-26 Proposed Budget as among the longest BRT alignments in the United States — extends southward from the urban core toward Florida City, connecting communities in the southern portion of the county to the broader network that links to MIA. Miami's documented position as the largest U.S. gateway for Latin America and the Caribbean places MIA at the center of a regional economy that the Miami-Dade County FY 2025-26 budget documents as anchored by aviation, maritime trade, tourism, and finance.
Sources
- U.S. Census Bureau American Community Survey (ACS) 2023 https://www.census.gov/programs-surveys/acs Used for: Population (446,663), median age (39.7), median household income ($59,390), median home value ($475,200), median gross rent ($1,657), poverty rate (19.2%), unemployment rate (4.9%), labor force participation (74.5%), renter/owner occupancy rates, bachelor's degree attainment (21.5%)
- City of Miami Official Website — History https://archive.miamigov.com/home/history.html Used for: City incorporation date (July 28, 1896), founding population (444 citizens), Flagler's infrastructure contributions, canal construction to drain Everglades land
- Flagler Museum — Florida East Coast Railway History https://flaglermuseum.org/history/florida-east-coast-railway Used for: Florida East Coast Railway reaching Biscayne Bay in 1896, Flagler's railroad development timeline and role in Miami's founding
- University of Miami — Flagler's Journey to Florida https://features.miami.edu/2019/flagler-blueprints/flagler-journey-to-florida.html Used for: Julia Tuttle's role as pioneer founder, Flagler's agreement to build hotel and lay out city in exchange for land, Great Freeze of 1894-1895 as catalyst for railroad extension to Miami
- Miami-Dade County — Mayor Announces MIA's Record Growth in 2024 and Modernization Plan Update (February 24, 2025) https://www.miamidade.gov/global/release.page?Mduid_release=rel1740490708573278 Used for: MIA's 2024 record of nearly 56 million passengers and 3 million tons of cargo; three consecutive record years for passengers, five for cargo; Mayor Daniella Levine Cava identified as county executive
- Miami-Dade County Legislative Document — MIA Passenger and Cargo Rankings 2024 https://www.miamidade.gov/govaction/legistarfiles/Matters/Y2026/260249.pdf Used for: ACI rankings placing MIA as #2 U.S. airport for international passengers and #1 for international freight in calendar year 2024
- Miami-Dade County FY 2025-26 Proposed Budget — Transportation and Public Works https://www.miamidade.gov/resources/budget/proposed/fy2025-26/transportation-and-public-works.pdf Used for: DTPW system description: 25-mile Metrorail, 20-mile South Dade TransitWay, 4.4-mile Metromover; PTP surtax contribution of $264.339 million (up $39.617 million); South Dade BRT among longest in U.S.
- Miami-Dade County FY 2025-26 Adopted Budget — Five-Year Forecast, Major Proprietary Functions https://www.miamidade.gov/resources/budget/adopted/fy2025-26/five-year-forecast-major-proprietary-functions.pdf Used for: PortMiami FY 2024-25 cruise passenger figure of 8.6 million; projected cargo volume of 1.177 million TEUs in FY 2025-26
- Miami-Dade County FY 2025-26 Proposed Budget — Major Proprietary Functions https://www.miamidade.gov/resources/budget/proposed/fy2025-26/major-proprietary-functions.pdf Used for: PortMiami FY 2023-24 cruise passengers (8,233,056); 13% growth over FY 2022-23; 105% increase vs. FY 2021-22
- Miami International Airport — Official Facts Page, Miami-Dade Aviation Department http://www8.miamidade.gov/mia/facts.asp Used for: MIA founded 1928; largest U.S. gateway for Latin America and Caribbean; 3,230 acres near downtown Miami; operated by Miami-Dade Aviation Department
- Miami-Dade DTPW 2024 Transit Development Plan https://www.miamidade.gov/transit/library/2025-05-dtpw-2024-tdp.pdf Used for: Metrorail 25-mile dual elevated track; South Dade TransitWay 20-mile line described as one of the longest in the nation; 4.4-mile dual elevated Metromover track; average weekday Metrorail ridership
- Miami-Dade Transit — Metromover Official Page https://www.miamidade.gov/global/transportation/metromover.page Used for: Metromover serves 21 stations from Financial District Station in Brickell to School Board Station in Omni area; three-loop system; fare-free service
- Miami-Dade Department of Transportation and Public Works — Homepage https://www.miamidade.gov/global/transportation/home.page Used for: Metrorail single-tracking maintenance for safety and reliability upgrades; enhanced Metrorail service for Inter Miami CF gamedays beginning April 4, 2025
- Brightline Press Room — Brightline Welcomes Tri-Rail to MiamiCentral Station https://www.gobrightline.com/press-room/2024/brightline-welcomes-tri-rail-to-miamicentral Used for: Tri-Rail beginning service into downtown Miami at MiamiCentral; station retail and residential context; MiamiCentral location within Miami Worldcenter
- Railway Technology — Brightline High-Speed Rail Project, Florida https://www.railway-technology.com/projects/brightline-high-speed-rail-project-florida/ Used for: Brightline Miami-to-Orlando revenue service commenced September 22, 2023