Korean Air business class is a great way to cross the Pacific, and the regularity with which they release business
class award space makes it one of the more convenient award booking options.
Not exact matches
While it
makes it easier to search for Singapore Airlines
award space online (United blocks it) it nevertheless prohibits
award travel in first or business
class on Singapore Airlines on flights operated by the Boeing 777 - 300ER or Airbus A380 - 800.
Of course, purchasing miles when you know that
award space is available can still
make sense in such situations as it's usually cheaper than buying a first or business
class ticket outright.
The real advantage is that Singapore Airlines
makes some premium cabin
award space (Business
Class and First
Class) available for redemption with its own miles.
Cathay Pacific is quite generous with releasing business
class award space in advance,
making it a great use of American miles.