Helium balloons, as flying rubber balloons, trace back to the early 1800s, with key developments in 1824–1825 and widespread decorative helium use emerging only in the early 20th century.

Quick Scoop

The core timeline (short answer)

  • 1824: Michael Faraday makes the first rubber balloons to hold light gases (mainly hydrogen) during experiments.
  • 1825: Thomas Hancock sells early rubber balloon kits to the public.
  • Late 1800s–early 1900s: Helium is discovered (1868) and gradually adopted as a safer, non‑flammable gas than hydrogen.
  • Early 20th century: Helium‑filled rubber balloons start to resemble the party balloons we know today, but are still not mass‑market decorations.
  • Mid‑20th century: Helium balloons become popular for parties and events, as mass production of latex balloons and safer helium supply become common.

So if you’re asking “when were helium balloons invented” in the sense of “when did people first make rubber balloons that float using a light gas,” the answer points to Faraday’s 1824 experiments with gas‑filled rubber balloons. If you mean “when did helium‑filled party balloons become common,” that really happens only in the early to mid‑1900s, after helium replaces dangerous hydrogen as the lifting gas.

A tiny bit of story

Imagine a London lab in 1824: Michael Faraday cuts two rough disks of sticky rubber, presses the edges together, dusts the inside with flour so they don’t stick, and then pumps in a light gas. The little rubber bag lifts and stretches, turning from a flat, gummy circle into something recognizably balloon‑like. Faraday isn’t thinking about birthdays; he wants a controllable way to trap gas for experiments. Yet, without knowing it, he’s just created the ancestor of the modern helium balloon.

Decades later, people learn the hard way that hydrogen‑filled balloons can explode, and a dramatic hydrogen balloon accident in 1922 pushes industry to look for safer options. Helium—non‑flammable, inert, and much safer—steps in as the new lifting star, and by the mid‑20th century the floating helium balloons at parties become a familiar sight.

Information gathered from public forums or data available on the internet and portrayed here.