The Richmond one is in early February and called Frostfest. Quick Google search turned up the ones below and some are in the past with searching the whole year. I think there is one in Virginia Beach in the Fall, but not listed here.
HAMFEST/CONVENTION
02/03/2018 | Virginia State Convention (Frostfest)
Location: Richmond, VA
Type: ARRL Convention
Sponsor: Richmond Amateur Telecommunications Society
Website:
Frostfest
Richard J. Ernst Community Cultural Center, NOVA Annandale Campus
HAMFEST/CONVENTION
03/18/2018 | Winterfest 2018
Location: Annandale, VA
Type: ARRL Hamfest
Sponsor: Vienna Wireless Society
Website:
Winterfest – Vienna Wireless Society
Prince William County Fairgrounds
HAMFEST/CONVENTION
06/03/2018 | W4OVH Manassas Hamfest
Location: Manassas, VA
Type: ARRL Hamfest
Sponsor: Ole Virginia Hams ARC
Website:
Home
Clarke County Ruritan Fairgrounds
HAMFEST/CONVENTION
08/05/2018 | 68th Annual Berryville Hamfest
Location: Berryville, VA
Type: ARRL Hamfest
Sponsor: Shenandoah Valley Amateur Radio Club
Website:
Berryville Hamfest - Shenandoah Valley Amateur Radio Club