Answer: firstclass

AnswerCrossword Clue
FIRSTCLASSPlane section
FIRSTCLASSNew teacher's worry?
FIRSTCLASSUnited offering
FIRSTCLASSPreferential plane seating
FIRSTCLASSExpensive airplane section
FIRSTCLASSTop of the line
FIRSTCLASSFantabulous, as a hotel
FIRSTCLASSOutstanding
FIRSTCLASSSecond to none
FIRSTCLASSTops
FIRSTCLASSPosh
FIRSTCLASSOne way to travel
FIRSTCLASSBest.
FIRSTCLASSHighest-quality
FIRSTCLASSPricey plane section
FIRSTCLASSFlier's upgrade
FIRSTCLASSEntitled to preferred treatment
FIRSTCLASSAlternative to coach
FIRSTCLASSThe teacher is ..
FIRSTCLASSTop-notch
FIRSTCLASSEarliest study period?
FIRSTCLASSAbsolutely fabulous