I4

Interisland Airlines

ICAO ISN“TRI-BIRD”TUI Travel

Interisland Airlines (I4 / ISN) is an airline from the Philippines, founded in 1986. It is a member of TUI Travel. Its hub is Ninoy Aquino International Airport. It flies to or from 7 airports in 2 countries.

Network

7 airports · 2 countries
HNH · Hoonah AirportJNU · Juneau International AirportKAE · Kake Seaplane BaseKTN · Ketchikan International AirportKLW · Klawock AirportSIT · Sitka Rocky Gutierrez AirportMNL · Ninoy Aquino International Airport · hubMNL

Lines are great circles between the airports it flies; amber dots are its hubs. US routes from DOT BTS T-100, 2025. Hubs, codes and years from Wikidata.

Hubs

1 · from Wikidata
MNLNinoy Aquino International Airport Manila (Pasay)

Airports

7 · by country
United States6
HNHHoonah Airport HoonahJNUJuneau International Airport JuneauKAEKake Seaplane Base KakeKTNKetchikan International Airport KetchikanKLWKlawock Airport KlawockSITSitka Rocky Gutierrez Airport Sitka
Philippines1
MNLNinoy Aquino International Airport Manila (Pasay)hub