I believe America West is now a part of US Airways, but to answer your question they do offer flights to Anchorage Alaska at all times of the day. The flights to Alaska are pretty expensive, though.
Alaska Airlines has affiliates from the SkyTeam Alliance and the OneWorld Alliance. American and Delta Airlines are the biggest US Partners. They also have a partnership with Icelandair on flights from the US to Iceland. Horizon Airlines
One can find an airport in Japan by going on Expedia flight which offer flights to and from Japan. One can also contact the international Japanese airport for more information.
Alaska, Horizon, and United currently offer direct flights between the two cities. http://www.portofportland.com/NonStop/Search.aspx
Frontier Flying Service is an Alaska-based airline company. Their main service is in providing commuter flights for people living across Alaska, but they also offer charter service to Canada as well as every US state except Hawaii.
Yes, American Airlines does offer flights from Seattle to Chicago. They offer several flights a day and prices are relatively cheap for such flights, either one-way or round trip.
There are a few airlines that offer flights into Knock, like Ireland West Airport and Skyscanner. Both airlines offer average prices flights into Knock.
There are currently four airlines that offer flights to Ahmedabad, but there are no direct flights from the United States. Airlines that do offer flights to Ahmedabad are Air India, Emirates, Qatar Air, and Etihad Airways.
Alaska
Hawaiian Airlines does offer flights to Las Vegas. The flights depart from Hawaii, and there are also flights that depart from other locations in the United States.
Yes, they offer many routes or domestic flights within the UK.
There are many airlines which offer flights to Tenerife, Spain. Monarch Airlines, Ryanair, Air Berlin and Thomas Cook Airlines all offer flights to Tenerife.