The airport is named after Antonio Borja Won Pat, the first delegate from Guam to the United States House of Representatives, and is operated by the A.B.

The airport was built by the Japanese Navy about 1943, calling the military airfield Guamu Dai Ni (Guam No.

After the island was recaptured by American forces in 1944, it was renamed Agana Airfield, due to the proximity of the town.

The lifting of this travel restriction spurred the development of the airport; its International Air Terminal opened in March 1967 and accommodated its first tour group from Japan two months later.

The projects include the relocation of bulky baggage screenings, additional security lanes, the expansion of parking spaces, and more.

The third level corridor will finally put the airport compliance with federal regulations by the U.S. Transportation Security Administration in 2005, in response to 9/11, by separating arriving international passengers with departing passenger and allowing the airport to finally remove the semi-permanent barriers and reclaim full use of the concourse.

Passengers arriving from the Commonwealth of the Northern Mariana Islands, a separate U.S. immigration jurisdiction with slightly different visa requirements, are pre-inspected there for admissibility to Guam.

Nonstop passengers bound for Honolulu are pre-inspected at Guam's boarding gate for admissibility to the United States because of the Guam and Northern Mariana Islands Visa Waiver Program, which allows visa-free entry to Guam for tourists from Australia, Brunei, mainland China, Hong Kong (with a Hong Kong Identity Card), Japan, Malaysia, Nauru, New Zealand, Papua New Guinea, Singapore, South Korea, Taiwan (with a Republic of China passport with a National ID number and a valid Republic of China national identity card), and United Kingdom (with a British Citizen passport or a British National Overseas passport).

For U.S. citizens, passports are not required to enter Guam from the Northern Mariana Islands; other forms of identification proving admissibility are accepted.

Transit passengers, except from Honolulu and the Northern Mariana Islands, are also inspected by the U.S. Customs and Border Protection before being allowed to proceed to their connecting gate.

[2][18] It has two asphalt runways: For the 12-month period ending February 28, 2022, the airport had 24,804 aircraft operations, an average of 68 per day: 65% general aviation, 1% air taxi, 27% commercial airline and 7% military.

[21] Since all flights require customs or immigration inspection, the airport's post-security concourse and gate area was not designed to separate arriving and departing passengers.

Arrival passengers walk directly into the gates' waiting area, and in the past could purchase food or merchandise before entering the immigration hall.

In recent years, semi-permanent movable walls separate much of the length of the terminal building into two halves, decreasing the need for human staffing and those lighter objects previously in use.

This article incorporates public domain material from the Air Force Historical Research Agency Media related to Antonio B.