Shelley Simpson, 46, operated a "Ponzi-style" operation in which she would pretend to take holiday and events bookings and then fail to pay suppliers.
Many of her victims were left having to shell out significant sums to airlines and accommodation providers to rescue their trips or risk being left out of pocket altogether.
An investigation by Portsmouth Trading Standards revealed Simpson forged booking documentation purporting to be from major travel firms.
Trading standards and Hampshire Police received more than 90 complaints from Simpson's customers, who paid for holidays or events only for their bookings not to materialise in full or as described.