The Williams airport is called Clark Field. Contact info:
3501 North Airport Road
Williams, Arizona 86046
Phone (928) 635-1280
Cell (928) 853-4168
FAX (928) 635-4495
E-mail airport@ci.williams.az.us

The closest commercial airport is Flagstaff Pulliam Airport which is about a 45 minute drive from Williams.  The nearest International airport is Phoenix Sky Harbor air port (PHX)  that is a 2 1/2 hour trip give or take traffic and weather.  Las Vegas is another option and can sometimes be a cheaper option if you don’t mind the 3 hour drive.  Amtrak does make some late night stops at Williams Junction, then a bus will bring you into town or else you can use the Flagstaff Amtrak depot.  There is also Greyhound.

 

There are 3 exits from I-40 into Williams.  Exit 163 is the main exit/entrance into the heart of downtown Williams.  If you want to just get to the Grand Canyon take exit 165 which takes you to Rt 64.  That takes 1 hour (60 miles) roughly to get to the canyon.