That is true. However, I don't think the market warrants 2 daily flights on 767s.
And United has a huge advantage over Hawaiian on the DEN-HNL market. For one, lots of loyal United Frequent Flyers in Denver, and of course PLENTY of connection opportunities to the rest of the United States.
I have heard that United wants to expand Hawaiian service from Denver.
A couple months ago they announced seasonal Saturday service to Kona (KOA), and now they announced daily service to Honolulu. I'm guessing OGG will be next, and it would be a logical choice.
Infact, I could see OGG operating daily for at least the winter season, and weekend service the rest of the year. Or possibly daily year-round service if they really want to compete with American Airlines from STL and DFW.
While business travel is down, the leisure market is doing very well. Infact, even better than last year.
This is why Frontier is starting service to Cancun and Mazatlan and why United is expanding Hawaii service.
"Generosity is giving more than you can, and pride is taking less than you need." - Khalil Gibran