Cabotage is also referred to as the 9th air freedom, for the curious. [1]
The prohibition on cabotage also applies to passenger and cargo ships. [2]
If not, a creative itinerary with multiple stopovers like Manila-Guam-Honolulu-Anchorage-Seattle could be interesting.
- Majuro in the Marshall Islands (MAJ)
- Kwajalein Atoll in the Marshall Islands (KWA)
- Kosrae in the Federated States of Micronesia (KSA)
- Pohnpei in the Federated States of Micronesia (PNI)
- Chuuk in the Federated States of Micronesia (TKK)
I believe passengers aren't allowed off in at least one, if not two, of the stops because they're basically just a US military base on a rock. [1, 2]
> The limitation is purely legal. The airline treaties distort pricing and competition, otherwise it should be possible to do a 24/48h stopover in Guam, Taipei etc., and even lower your overall ticket price if you're flexible about dates.
Note that you can do this, it just has to be on separate tickets if connections are under 24h. For a connection over 24h, the world is your oyster, so to speak, from a ticketing perspective. Unless you plan to stay at the airport (and only an option in some places with sterile transit) you may need a visa for the intermediate point.
[1] https://en.wikipedia.org/wiki/Island_Hopper
[2] http://www.gcmap.com/mapui?P=HNL-MAJ-KWA-KSA-PNI-TKK-GUM