Yes, you can often pick up VFR Flight Following on the ground before you even taxi, particularly at airports with Class C or Class D airspace. To do this in 2026, you would contact the Ground Control or Clearance Delivery frequency and state your request: "Ground, [N-Number], at [Location], request VFR Flight Following to [Destination] at [Altitude]." If the controllers are not too busy, they will provide you with a unique four-digit "squawk code" and departure frequency before you take off. This allows you to have radar services and traffic advisories from the moment you leave the ground, which is a major safety benefit in busy areas. However, at some smaller non-towered airports, you cannot get flight following on the ground and must wait until you are airborne to contact the regional "Center" or "Approach" controller. Always remember that Flight Following is a voluntary service; if the airspace is saturated, a controller may say "unable," and you must continue your flight under standard VFR rules.
Yes, you can and often should request flight following while still on the ground.
This is a common and recommended practice, especially at non-towered airports or when departing from a towered airport but planning to leave its airspace.
You: “New York Center, Cessna 12345, receiving [ATIS/AWOS info] at Anytown Municipal, ready to taxi, VFR to Springfield, request flight following.”
Center: “Cessna 12345, New York Center, squawk 0432, ident. Departure frequency will be 127.85. Report ready for takeoff.”
You: “Squawk 0432, ident, and will report ready, Cessna 12345.”