Phoenix Sky Harbor International Airport (PHX) is the primary commercial airport serving the Phoenix metropolitan area and one of the largest airports in the southwestern United States. Located three miles east of downtown Phoenix, Sky Harbor serves as a major hub for American Airlines and Southwest Airlines and connects the rapidly growing greater Phoenix region to destinations across the country and internationally.
Phoenix Sky Harbor International Airport has grown dramatically alongside Phoenix itself — now the fifth-largest city in the United States — to become one of the country's most operationally significant airports. PHX operates from two active terminals: Terminal 3 and Terminal 4. Terminal 2 was demolished in 2020 after being replaced by expanded facilities, and Terminal 1 was never built for commercial use.
American Airlines uses Sky Harbor as a significant hub and operates the majority of its flights from Terminal 4. Southwest Airlines is the second-largest carrier and also operates from Terminal 4. The airport provides nonstop service to well over 100 destinations and handles more than 45 million passengers in high-traffic years.
The PHX Sky Train is an automated people mover that connects Terminal 3, Terminal 4, the 44th Street Sky Train Station (where Valley Metro Rail connects), the PHX rental car center, and economy parking lots — making PHX one of the more seamlessly integrated airports for ground transportation in the country.
Phoenix Sky Harbor opened in 1935, making it one of the older commercial airports in the American West. The airport's convenient location close to downtown Phoenix — close enough that it was sometimes called the world's most centrally located major airport — was both an asset for passengers and a long-term development constraint as the city grew around it.
Sky Harbor expanded through the postwar decades with successive terminal buildings, runway extensions, and concourse additions tracking Phoenix's explosive population growth. American Airlines and its predecessor US Airways established strong hub operations at PHX, and Southwest Airlines built it into one of its highest-frequency markets. The PHX Sky Train opened in 2013, modernizing the airport's internal transportation and connecting it for the first time to the regional light rail network.
PHX has two active terminals. Terminal 3 houses several carriers including Delta Air Lines, United Airlines, Alaska Airlines, and international carriers. It was renovated in 2021 with an updated concourse and expanded gate areas. Terminal 4 is the largest terminal and handles American Airlines and Southwest Airlines, along with most other domestic and international operations.
The PHX Sky Train automated people mover connects both terminals to each other, to the remote 44th Street rail station, to the rental car center, and to economy parking facilities. Passengers transferring between Terminal 3 and Terminal 4 do not need to exit security if they use the airside connections — though some transfers may require using the Sky Train on the lower level.
American Airlines is the largest carrier at PHX, operating extensive domestic service and international routes to Mexico, the Caribbean, and Canada from Terminal 4. Southwest Airlines is the second-largest carrier and operates extremely high frequencies to cities across its domestic network. Delta Air Lines, United Airlines, Alaska Airlines, Spirit, Frontier, and international carriers from Mexico and Canada round out PHX's carrier mix.
PHX provides nonstop service to more than 100 destinations. International routes focus primarily on Mexico and the Caribbean, with some seasonal European and additional international service. The airport's role as a sun-destination and connecting airport means it experiences strong seasonal fluctuations tied to Arizona's winter tourism peak (October–March).
PHX offers a solid range of dining and retail options across both terminals, with the highest concentration in Terminal 4. American Airlines operates Admirals Club lounges in Terminal 4. Southwest Airlines has no traditional lounge but maintains dedicated seating areas. Free Wi-Fi is available throughout both terminals.
Sky Harbor is known for its Arizona-themed food and beverage offerings, with several locally branded restaurant concepts. The terminal art program incorporates Southwestern and Native American cultural themes. Nursing rooms, interfaith prayer spaces, and pet relief areas are available throughout both terminals.
The PHX Sky Train connects the airport to the 44th Street/Washington Street Valley Metro Rail station, where passengers can board the Valley Metro Light Rail to reach downtown Phoenix, Tempe, and Mesa. The train ride from Terminal 4 to downtown Phoenix (Jefferson/1st Ave station) takes approximately 25 minutes and requires a transfer at the 44th Street station to the light rail. The Sky Train itself is free; Valley Metro rail fares apply separately.
Rideshare services pick up on the lower level of each terminal. Taxis are available at dedicated stands. The rental car center is connected via the PHX Sky Train. I-10 provides direct highway access to both downtown Phoenix and the west Valley.
PHX provides parking in garages adjacent to each terminal and in remote economy lots served by the PHX Sky Train. Terminal 4's parking structure is the largest and closest to the main operations. Economy lots offer lower rates with Sky Train access rather than shuttle buses — a more efficient system than traditional airport economy parking shuttles.
Phoenix's warm climate and the Sky Train make outdoor economy parking a practical option year-round. Reservations are recommended during peak winter tourism periods (January–March) when Phoenix attracts significant visitor traffic from colder states.
The PHX Sky Train is free between airport facilities and runs very frequently — use it whenever possible rather than attempting to walk between terminals or to remote parking. During Phoenix's peak winter travel season, the airport can be very busy on weekends; arrive at least 90 minutes before domestic flights.
Phoenix's extreme summer heat (often above 110°F / 43°C) means that outdoor waiting areas can be uncomfortable June through August. Ground transportation loading zones are partially shaded, but plan for brief exposure to high temperatures when moving to ground transport. The airport is air-conditioned throughout. Winter in Phoenix brings pleasant weather and one of the airport's peak travel seasons as snowbirds arrive from northern states.
Phoenix Sky Harbor International Airport is a central economic driver for metropolitan Phoenix — the fifth-largest city in the United States and one of the fastest-growing metro areas in the country. Sky Harbor supports hundreds of thousands of jobs in the region and generates tens of billions in annual economic activity. Its dual-hub status for American and Southwest gives Phoenix excellent domestic connectivity, supporting the region's healthcare, technology, manufacturing, and tourism sectors.
The airport is particularly important for Arizona's winter tourism economy, enabling the influx of snowbirds, spring training baseball visitors, and convention attendees who arrive by air. PHX also serves a growing cross-border role, providing convenient U.S. access for passengers from northwestern Mexico.
PHX is pursuing a major long-range capital improvement program including construction of a new Terminal 3 satellite to add gate capacity, continued modernization of Terminal 4, and expanded international arrivals facilities. The airport authority is also working on sustainability initiatives targeting carbon reduction and water conservation — particularly important given Phoenix's desert climate and water scarcity pressures. Valley Metro's rail network continues to expand, which may improve PHX's rail connectivity over time.
PHX is a primary commercial airport and major domestic hub in the Southwest. It functions as a key connecting airport for transcontinental and regional travel in the western United States.
Airports within approximately 60 miles of Phoenix Sky Harbor International Airport that may provide additional scheduled commercial, regional access.
Phoenix Sky Harbor International Airport is an airport shaped by the unique characteristics of its city — fast-growing, sun-drenched, and strategically located for domestic travel in the American West. Its PHX Sky Train integration with Valley Metro Rail, its dual American and Southwest hub operations, and its proximity to downtown Phoenix make it one of the more well-designed large airports in the southwestern United States.
Take the free PHX Sky Train from your terminal to the 44th Street/Washington Valley Metro Rail station, then board the Valley Metro Light Rail westbound toward downtown Phoenix. The full trip from Terminal 4 to downtown Phoenix is approximately 25 minutes.
The PHX Sky Train is a free automated people mover that connects Terminal 3, Terminal 4, the 44th Street Valley Metro Rail station, the rental car center, and economy parking. It runs 24 hours a day, 7 days a week.
American Airlines and Southwest Airlines are the largest carriers. Delta, United, Alaska, Spirit, and Frontier also serve PHX, along with international carriers from Mexico and Canada.
PHX has a strong winter peak from October through March, driven by snowbird arrivals from northern states, spring training baseball visitors, and Arizona's convention season. Summer (June–August) is somewhat quieter for leisure travel.
For the most current flight schedules, parking availability, terminal maps, and ground transportation updates, visit the official Phoenix Sky Harbor International Airport website.
Phoenix Sky Harbor International Airport Official Site