Will Helium Balloons Last Overnight?

Your Complete Guide from Balloons Corner

Planning a party and wondering if your helium balloons will still be floating the next morning? Whether you’re getting ready for a 40th birthday, a baby shower, or even a wedding, it’s a common worry! At Balloons Corner, we get this question all the time - how long do helium balloons last? — and we’re here to help with clear, simple answers. From 30th birthday balloons to classy gold ceiling balloons, we’ll tell you everything you need to know so your party standout!

What Are Helium Balloons Made Of?

Helium balloons come in a few different types, and what they’re made of can affect how long they float. Not all balloons are created equal! Some are perfect for lasting days, while others are better for short, fun events. When choosing the right balloons, it’s good to know what you're working with so you can avoid any surprises.

The most common helium balloons you'll find in a balloon shop or balloon store include:

Latex Balloons

• Made from natural rubber

• Biodegradable and flexible

• Great for ceiling balloons and bright splashes of colours

• Float time: 8–12 hours (unless treated)

Foil Balloons

• Made from a shiny, plastic-like material called Mylar

• Hold helium longer than latex

• Perfect for birthday balloons, 30th balloons, and shaped designs

• Float time: minimum 1 day or more

Can I Buy Helium Balloons the Day Before the Party?

This is one of the most common questions we get. You’re planning ahead (smart move!) and want to know if your balloons will still be floating the next day. The good news is — yes, you can buy helium balloons the day before your event, but you need to pick the right type. Timing is key, and so is the material of your balloon.

Here’s what to keep in mind:

Foil balloons are perfect for early setup. They last minimum 1 day and still look great the next morning.

Latex balloons without treatment won’t make it overnight – they start shrinking after 8–12 hours. But for us at balloons corner we treat all our latex balloons with Hi-Float ( a liquid solution designed to extend the float time of latex balloons filled with helium ) to extend their floating life.

Ordering early? Our balloon delivery in London courier can help you time it right!

Why Do Helium Balloons Deflate?

It’s disappointing when your beautiful party balloons start drooping before the guests arrive. So what’s the science behind it? Helium is a very light and tiny molecule, which means it can easily escape from balloon surfaces. Some materials hold helium better than others, and outside factors like temperature can play a big role too.

Let’s break down the reasons helium balloons deflate:

• Helium escapes through the material (especially with latex balloons)

• Cooler temperatures make the helium contract, shrinking the balloon

• Heat or sunlight weakens the material and can make balloons deflate

• or even pop! For that we ask all our clients to keep there balloons a way from heat and direct sun light.

• Improper sealing or tying can cause early leaks

So if you’re wondering why your gold balloons looked amazing in the morning and sad by the evening — now you know!

What Helium Balloons Last the Longest?

If you’re decorating in advance or want your balloons to last more than just a few hours, it’s important to choose the right kind. Not all balloons are equal when it comes to float time, and the type of event may also affect your choice. For example, you might need long-lasting 1st birthday balloons to last all weekend, not just one day!

So which ones float the longest?

Foil balloons are the champions of long float time

• They can stay up for 1 day — even several days if kept indoors!

• Great for detailed designs, numbers, letters, hearts and themed balloons

Hover our high quality latex balloons with the right treatment we provide can last with you for next day without any problem

How Can Helium Balloons Last Longer?

You’ve chosen your balloons, picked your party colours, and now you just want them to last as long as possible. Don’t worry — we’ve got some easy tips to help you get the most out of your helium balloons. Whether you’re picking up from our balloon shop or using our balloon delivery in London services, a few small changes can make a big difference.

Here’s how to keep those balloons floating:

• We add Hi-Float in your latex balloons to extend their life

• Keep balloons indoors and away from direct sun light or heat

• Use foil for longer-lasting designs like Numbers or letters even dinosaur and super hero balloons.

• Avoid cold rooms overnight, as helium shrinks in cold temperatures.

Order from a pro (like us!) to get high-quality materials and right treatment with proper inflation

So, will your helium balloons last overnight? The answer is: yes — if you pick the right kind and treat them right! At Balloons Corner, we love helping our customers get the most out of their party decor. Whether you’re celebrating a milestone with 21st birthday balloons, decorating the ceiling with stunning latex balloons, or surprising someone with a room full of heart balloons, we’ve got your back.

Ready to Order?

We offer fast and reliable balloon delivery in London services — or pop into our balloon store and let us help you create the perfect balloon setup. Choose from:

• Custom helium balloons

• Stylish foil balloons

• Elegant ceiling balloons

• Show-stopping 30th birthday balloons, Engagement balloons, and more!

Contact us now to help you more with what we can offer for you to make your party standout