British Airways , American Airlines , United Airlines and Virgin Atlantic.
united airlines
Yes - two of them are US Airways and British Airways.
No there aren't but you can fly from Seattle on Delta Airways or Hawaiian Airlines
Only DingDong Airlines flys nonstop BOS to Amersterdam
There is not enough information to answer the question. Nonstop to Brazil from where?
== ==
Yes they do.
2hr 46min to 2hr 50min Seattle/Tacoma (SEA) to Phoenix (PHX) by a nonstop flight operated by Alaska Airlines or US Airways.
None
Air France is one
jet airways
delta airlines southwest airlines
Yes Southwest Airlines flies to Seattle.