Originally Posted by
christep
Hawaii has been fully part of the USA since 1959. I can find no evidence in the rule sheets that flights to/from Hawaii are any different from any other US domestic flight on a xONEn ticket, except in that only one such flight is allowed.
What is your evidence for your assertion?
The rule sheet point 4(k) says "Within the US/Canada only one nonstop or single plane service transcontinental flight permitted" and it lists the destinations on East and West coasts between which a flight is counted as "transcontinental". Hawaii isn't in this list, although intriguingly Puerto Rico is.
Evidently HNL-MIA
is "transcontinental"
and "within the US/Canada" (from a political perspective at least)
Maybe Hawaii isn't on the list because there is the separate rule in 4(b) saying you can't backtrack from there to the "continental" US / Canada; or it could be because Hawaii isn't counted as "within the USA" for the airlines' purposes. Don't know for sure. Just a possible interpretation.