Destination #1 hint: This city's state is featured on one of our signature aircraft.
SIGNATURE ACFT:
California One, Nevada One, Arizona One, Lone Star One, New Mexico One.
(Lots of airports from this category )

Destination #2 hint: Flying into this city, you'll be treated to spectacular mountain views.
SEA, PDX, SLC, DEN, RNO would be on my short list, but there are more that could qualify.

Destination #3 hint: This city's airport is the only one we fly to within its state. Lots to chose from:
PDX, BOI, SLC, DEN, ABQ, OMA, MSP, OMA, MDW, LIT, IND, MSY, JAN, BHM, BNA, SDF, RDU, DTW, BDL, PVD, MHT, BWI, BOS

Destination #4 hint: This city has a population of over 700,000.