Originally Posted by
headinclouds
You may fly in F on a biz class intl award, but won't you pay the multipler for F for the entire trip? Front of the plane award trips to Hawaii are treated as F, so 3 not 2 is the multipler used for determining the number or miles needed.
I was talking in the context of the question the OP has, his itinerary is SEA-DFW to South America, to be booked in C - but BA only shows him Y for the SEA-DFW segment... In a slip, I was thinking in the AA award context...
However, you have made a good point - since this is a BA award, may be if there is no C class on a 2-class plane, BA award would automatically downgrade you to Y on that segment, very similar to how JL treats an AA award booked in C that involved Japan domestic segments which do not have C class - so all JL domestic segments would be downgraded to Y, despite the award is booked in C.
To avoid such, if one departs from, say SFO or MIA, picks the 3-class flight to get C cabin. Unfortunately SEA-DFW is served by 2-class flights only.