Transportation in Miami — Miami, Florida

Miami, the county seat of Miami-Dade County and home to an estimated 446,663 residents as of the U.S. Census Bureau ACS 2023, functions as the primary multimodal transportation hub of southeastern Florida. The city sits at the convergence of interstate highway corridors — Interstate 95, Interstate 395, and Interstate 836 (the Dolphin Expressway) — and serves as the operational center for one of the nation's most consequential aviation and maritime complexes. Transportation governance is divided between the City of Miami and Miami-Dade County: the county, through its Department of Transportation and Public Works, administers Miami-Dade Transit (MDT), PortMiami, and the Miami-Dade Aviation Department, while the city manages local road infrastructure and supplemental transit services such as the Miami Trolley. Miami's large renter-occupied population — 69.3% of housing units, per the ACS 2023 — and a 19.2% poverty rate situate the public transit network as a central element of daily mobility for much of the city's working population.

Miami-Dade Transit operates a layered network of rail, automated people mover, and bus services across the county. At its core is Metrorail, Florida's only heavy-rail rapid transit metro system, which opened in 1984 following the consolidation of private bus operators into a unified public system beginning in 1960. As documented by the Miami-Dade County Department of Transportation and Public Works, Metrorail operates on 25 miles of dual elevated track with 23 stations. The Orange Line connects riders to Miami International Airport via the Miami Intermodal Center and the MIA Mover, while the Green Line provides a Tri-Rail transfer connection. Stations serve downtown Miami, Brickell, Coconut Grove, Coral Gables, the Health District and Jackson Memorial Hospital area, Hialeah, and Medley.

The Metromover is a fare-free automated people mover operating in three loops — the Downtown, Omni, and Brickell loops — within the urban core. The county documents its stops as serving the Kaseya Center (home of the Miami HEAT), Bayside Marketplace, Miami Dade College, and numerous government and office buildings. Metromover traces its origins alongside Metrorail as part of a federally supported urban transit investment and remains one of a small number of free automated people movers in a major American city.

Metrobus extends the network county-wide, with routes reaching Miami Beach, Key Biscayne, West Miami-Dade, Broward County, Homestead, Florida City, and the Middle Keys, according to Miami-Dade County's Metrobus service documentation. Buses are equipped with free Wi-Fi, and transfers between bus and rail modes are free in both directions. The county provides transit information in English, Spanish, and Haitian Creole, and operates its call center in both Spanish and Haitian Creole, reflecting the linguistic composition of Miami's population.

Miami-Dade County's transit fare structure, documented on the Transit Fares and Passes page, caps daily transit costs at $5.65 across Metrorail and Metrobus services. The Metromover carries no fare. Bus-to-rail and rail-to-bus transfers are provided at no additional cost.

The county administers two income-based programs for reduced or free transit access. The Mobility EASY Card provides free transit to county residents whose annual income falls below $20,385. Residents earning between $20,386 and $27,180 annually qualify for the Commuter-Reduced Fare program. These thresholds are documented by Miami-Dade County in its Transit Fares and Passes materials. Given the city's median household income of $59,390 and 19.2% poverty rate as reported in the ACS 2023, a meaningful share of Miami residents falls within the eligibility range for one or both programs. The intersection of a predominantly renter-occupied housing market, a median gross rent of $1,657, and fare-capped transit defines much of the practical relationship between Miami's transit infrastructure and its lower- and moderate-income workforce.

Miami International Airport (MIA), located approximately 8 miles northwest of downtown in unincorporated Miami-Dade County and administered by the Miami-Dade Aviation Department, served 55.3 million passengers in 2025 — the second consecutive year exceeding 55 million — according to MIA's official news release. In 2024, the airport processed nearly 56 million passengers and approximately 3 million metric tons of cargo, sustaining its documented position as the number-one international freight airport in the United States. The Miami International Airport passenger site documents connections to more than 190 domestic and international destinations. A 2024 economic impact study, released at the World Trade Center Miami's State of the Ports luncheon and reported by MIA's official news, attributed $181.4 billion in business revenue and 800,000 statewide jobs to MIA alone. The airport is actively executing a $9 billion capital improvement program called Modernization in Action, ongoing as of 2025. In 2025, J.D. Power ranked MIA as North America's most-improved mega airport in customer satisfaction.

PortMiami, formally the Dante B. Fascell Port of Miami, occupies Dodge Island in Biscayne Bay immediately east of downtown. Per the Miami-Dade County FY 2025-26 Proposed Budget, the port processed 8,233,056 cruise passengers in FY 2023-24, a 13% increase over FY 2022-23, and projects approximately 8.2 million passenger movements in FY 2024-25. Container throughput is projected at approximately 1.08 million TEUs in FY 2024-25 and 1.117 million TEUs in FY 2025-26. The combined economic output of MIA and PortMiami was documented at $242.8 billion in business revenue across Florida in 2024. PortMiami's capacity expanded in April 2025 with the completion of a new MSC terminal, per the same county budget document. The port's origins trace to early-twentieth-century federal dredging of Biscayne Bay's harbor channel, which established the site's commercial viability.

In 2025, Miami-Dade County launched Metro Express on the South Dade TransitWay, described by the Department of Transportation and Public Works as the county's first all-electric Bus Rapid Transit system. The service connects Florida City to the Dadeland South Metrorail station, extending the reach of the transit network through South Miami-Dade along a dedicated corridor. The TransitWay had previously served local and express bus routes; Metro Express represents an upgrade to a named BRT product with all-electric vehicles.

Also in 2025, Miami-Dade Transit added dedicated Metrorail service to support Inter Miami CF home matches at NU Stadium at Miami Freedom Park, with enhanced service inaugurated for the stadium's opening match on April 4, 2025, per county transit communications. The Metromover system is undergoing an active upgrade program focused on equipment reliability and availability, with work documented by the county as ongoing through April and May 2025.

At Miami International Airport, the $9 billion Modernization in Action capital plan remained in active execution throughout 2025, per the airport's official site. MIA's passenger total of 55.3 million in 2025 marked the second consecutive year above that threshold, and the airport received its J.D. Power recognition for most-improved mega airport in customer satisfaction in North America. At PortMiami, the completion of the new MSC cruise terminal in April 2025 added berth capacity consistent with the port's projections in the FY 2025-26 county budget.

Miami's transportation network connects to neighboring counties and regional rail systems through several documented interchange points. The Metrorail stations page identifies the Government Center and MIA stations as primary intermodal hubs: at Government Center, riders connect to Metromover, Metrobus, and Brightline intercity rail; the MIA station provides direct access to the Miami Intermodal Center, which aggregates car rental facilities, the MIA Mover automated shuttle, and Tri-Rail commuter rail service connecting northward to Broward and Palm Beach counties.

Brightline, a private higher-speed intercity rail service operating from MiamiCentral at Government Center, began revenue service in January 2018 between Fort Lauderdale and West Palm Beach — the first new privately operated intercity passenger rail corridor in the United States in over a century — and extended service to Miami and, by 2023, to Orlando. The Brightline Miami station page documents connections from MiamiCentral to Metrorail, Metrobus, Metromover, and the Miami Trolley. Brightline's history traces to construction that began in November 2014 under the All Aboard Florida banner.

Metrobus routes cross the Miami-Dade–Broward county line and extend as far south as the Middle Keys, as documented by Miami-Dade County. The October 2025 Metrorail System Map illustrates these intermodal connections between Metrorail, Metro Express, Metrobus, Metromover, Tri-Rail, and Brightline across the regional network. Miami International Airport, situated approximately 8 miles northwest of downtown, serves as a statewide and international aviation gateway; Henry Flagler's extension of the Florida East Coast Railway to Miami in 1896 established the city's foundational role as a transportation terminus, a role that the airport and seaport have since amplified to a national and global scale.