Very simple: Commonality. WN
has no need and, presumably, no desire to add a new aircraft type, and thus all the costs that go with it, to the fleet. The 737's we fly have served us very well for over 33 years and the single aircraft type plays a vital role in keeping costs down.
As a side note, however, WN
did actually almost buy 757's not long ago. Rumor has it that Boeing had 10 sitting that a buyer backed out on. They called Herb and offered him the 10 birds for the price of 737's. Herb, however, did not want anything to do with them unless he could get 25 of them at that price...Boeing did not extend the offer to 25 planes, so Herb said no thanks...oh well .
Aircraft Flown: SF3 DH8 DH4 328 ERJ CRJ CR7 CR9 E70 E75 D9S M80 712 72S 732 733 734 735 73G 738 739 739ER 752 318 319 32