Helium vs Air Balloons: Which Should You Use? (Cost & Float Time)

By the Jofete Team · Last updated: September 24, 2026 · 5 min read

Helium vs Air Balloons: Which Should You Use? (Cost & Float Time)

Helium or air: which should I use?

Use air for any balloon that is attached to a wall, frame, table or arch. Use helium only for balloons that need to float on their own — a bouquet on a weight, a “string of pearls”, or balloons released into the ceiling. Air is cheaper and lasts weeks longer.

How do helium and air compare?

Air wins on cost and lifespan; helium wins on lift.

How much does helium cost?

Helium costs about $1–2 per 11-inch balloon if you rent a tank, or $2–4 per balloon at a shop. A tank for 30 balloons costs roughly $40–70. Air costs nothing beyond a pump, which makes it the obvious choice for any decoration that does not need to float.

How long do helium balloons last?

Helium latex balloons float for 8–12 hours, foil balloons for 3–7 days, and latex treated with Hi-Float for 24–48 hours. Air-filled latex balloons stay inflated for 2–4 weeks but never float.

Can I make air-filled balloons float?

No. Air-filled balloons are heavier than air, so they sink. The only ways to make balloons float are helium (or another lifting gas) or to hang them from a line or ceiling — which is why garlands and arches are always built with air and attached to a structure.

When is helium worth the cost?

Helium is worth it when the floating effect is the decoration itself: a balloon bouquet on a table, balloons on the ceiling, a “string of pearls” arch, or balloons released at a reveal. For everything else — garlands, columns, wall clusters — use air and save the money.

Frequently asked questions

Is it cheaper to use air or helium in balloons?

Air is much cheaper: it is free apart from a pump, while helium costs $1–2 per balloon. Air also lasts 2–4 weeks against 8–12 hours for helium, so it is both cheaper and longer-lasting for attached decorations.

Do air-filled balloons float?

No. Air-filled balloons are heavier than air and sink to the floor, which is why they are used for garlands, arches and columns that attach to a wall or frame. Only helium or another lifting gas makes a balloon float.

How long do helium balloons last without Hi-Float?

Without Hi-Float, an 11-inch helium latex balloon floats for 8–12 hours. With Hi-Float it lasts 24–48 hours. Foil balloons float for 3–7 days regardless, because their metallic coating traps helium far better than latex.

Shop balloons: browse our party supplies for latex and foil balloons and pumps, or see how long balloons last.