Antonio B. Won Pat International Airport

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Antonio B. Won Pat International Airport (IATA: GUM, ICAO: PGUM) is Guam’s main international airport. It sits in Barrigada and Tamuning, about 3 miles east of Hagåtña, and is Guam’s only international airport. The airport is named after Antonio Borja Won Pat, Guam’s first U.S. House of Representatives delegate, and is operated by the Guam International Airport Authority (GIAA).

Key facts
- Elevation: 305 feet (93 meters) above sea level
- Runways: two asphalt/concrete runways
- 6L/24R: about 12,014 feet (3,662 meters)
- 6R/24L: about 10,014 feet (3,052 meters)
- Terminal: The current passenger terminal opened in the late 1990s in a large expansion worth about $741 million. It has three levels: arrivals/baggage in the basement, departures/ticketing on the middle level, and gates/immigration on the top level. The building features Chamorro latte stone motifs and hosts two passenger lounges (Sagan Bisita and United Club).
- Size and operations: The airport covers about 1,657 acres and handles roughly 3.5–3.8 million passengers per year. In 2022 there were about 24,800 aircraft operations; around 42 aircraft were based there in 2020.

Who it serves
- Antonio B. Won Pat International Airport is Guam’s international gateway and a major cargo hub for Asia Pacific Airlines. It also serves as a base for passenger and cargo flights to the U.S. and Asia.

History at a glance
- Built by the Japanese Navy in 1943 as Guamu Dai Ni during World War II. After the war, it became Agana Airfield and was used by U.S. military forces, including the Navy’s NAS Agana until 1995.
- An international terminal opened in 1967. The Guam International Airport Authority (GIAA) was created in 1975, taking over airport operations in 1995.
- A major terminal expansion was completed in 1998. In 2014, Guam began regular direct service to Mainland China with United Airlines to Shanghai Pudong.
- In 2017, GIAA launched Vision Hulo’, a plan to invest about $167 million to improve capacity and services, including a large international arrivals corridor completed around 2019–2020.

Travel and security
- Arriving passengers from outside the United States go through U.S. Customs and Guam Customs. Departing passengers go through TSA security checks. Some transfers, including those involving the Northern Mariana Islands or Honolulu, have pre-clearance arrangements.
- Because Guam operates under U.S. customs rules, baggage and clearance procedures for connections are integrated to streamline travel.

Notable context
- The airport’s history includes several fatal aviation accidents in Guam’s past.

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