- West Palm Beach (PBI)
- West Yellowstone (WYS)
- Westerly (WST)
- Westfield (BAF)
- Weyers Cave (SHD)
- Wheeling (HLG)
- White Plains (HPN)
- Wichita (IAB)
- Wichita (ICT)
- Wichita Falls (SPS)
- Wildwood (WWD)
- Wilkes-Barre/Scranton (AVP)
- Williamsport (IPT)
- Williston (XWA)
- Wilmington (ILG)
- Wilmington (ILM)
- Wilmington (ILN)
- Wink (INK)
- Winnemucca (WMC)
- Winslow (INW)
- Winston Salem (INT)
- Wolf Point (OLF)
- Woodward (WWR)
- Worcester (ORH)
- Worland (WRL)
- Wrangell (WRG)
- Wrightstown (WRI)
- Yakima (YKM)
- Yakutat (YAK)
- Yankton (YKN)
- Youngstown/Warren (YNG)
- Yuma (YUM)
- Zanesville (ZZV)