A bunch of threads ago there was discussion about the lack of kiosks in Atlanta. I happened to notice today that the Frontier site's airport information indicates the availability of kiosks (or not) at their stations.

32 airports are listed as having kiosks
atw
ase
bos
bkg
mdw
cle
dfw
den
dsm
dtw
grr
hou
ind
mci
las
lgb
lax
mke
msp
lga
ewr
oma
mco
phx
rdu
slc
san
sfo
sba
geg
stl
dca

Some significant F9 airports without kiosks at this point:
abq
atl
aus
bna
cmh
pdx
phl
sat
sea
smf
sna
stl

I've heard at some airports there are tehcnical aspects that make kiosks cumersome or excessiarly costly. But to meet the goal of having kiosts in at least the top 25 stations this year, there are not too many more to equip.