Space view from Céleste capsule
The Experience

Low carbon flight to stratosphere

The Overview Effect, discover new beliefs

Experience the Overview Effect and feel the extraordinary emotion that only 600 astronauts have felt so far. By observing, as they did, the curvature of the Earth from space, you will live an overwhelming experience that transcends humanity and discover a new perspective on the universe.

Sunrise from space

A sustainable, space odyssey

With their mastery of wind trends and thermal elements, our pilots will guide you smoothly to the edges of space. As our balloon, Celeste, becomes lighter than air, it takes you on a awe-inspiring journey during which you can let yourself go and admire a once-in-a-lifetime panorama.

1. Lift Off
TROPOSPHERE • TEMP. 15 to -55°C (standard) temp. 45 to -80°C (REAL CONDITIONS) • PRESSURE 1013 to 200 mbar.

Depart from one of our spaceports located at some of the most iconic places on Earth. Board our luxury pressurised capsule, Celeste, designed for your utmost safety and comfort, lifted by a balloon higher than Notre-Dame de Paris.

2. Ascent

Céleste gives you a once-in-a-lifetime experience. Contemplate an exceptional panorama as you ascend at a speed of 4 metres per second. The ascent last an hour and a half until 25km. Admire the beauty of nature and enjoy a - long - moment out of time with your loved ones.

3. Apogee

At an altitude of 25 kilometres, above 98% of the atmosphere, admire the curvature of the Earth, its blue halo and the stars. Share the experience of the Overview Effect with a very few lucky people who are also witnessing the greatest of all shows.

4. Descent

Gently come back down to earth. Enjoy the scenery. We accompany you throughout the journey to help you understand what you are flying over.

5. Landing
TROPOSPHERE • TEMP. 15 to -55°C (standard) temp. 45 to -80°C (REAL CONDITIONS)• PRESSURE 1013 to 200 mbar.

Take time to deeply understand what you just experienced.

A tailor-made experience

Your journey starts from the moment you pre-book your flight. As soon as we get in touch, you will enter a fully personalized experience. We will invite you to a variety of events and welcome you in your space resort a few days before your flight.

Our spaceports

Stay tuned to find out about the openings of our next spaceports. You will soon be able to take off from all continents.

Map of Zephalto's spaceport around the globe

Open spaceport

Next opening

Experience catalogue

Earth contemplation is more than witnessing a panorama. Here is an overview of what Zephalto has to offer. Inspired by French luxury and art de vivre, reach us to fully personalise your journey with our experience designers.

Gourmet experience

Before flight

All your meals are designed and cooked by famous French chefs. More than a subtle meeting of the senses, they will allow you to have a moment of pure contemplation.

Oenological tasting

During flight

A selection, carefully chosen by a renowned sommelier, a guided tasting, to help you discover the best terroirs of France. From regions to grape varieties, discover France from sky and land.


During flight

You wish to celebrate a special event - birthday, wedding, etc. by privatizing Céleste with your friends or family ? We personalise and privatise the capsule to allow you to live an unforgettable moment.

Stratospheric Photography

During flight

In the company of a professional photgrapher, learn how to take exceptional photographs, and immortalise your travel memories with the best advice.

Right arrow
Right arrow
picture of a sky with red cloud

Legacy instants up in the stratosphere

Zephalto offers a unique moment to understand Earth’s beauty and realise it is the treasure of all generations. Everyone inherits it and is able to preserve it in their own way.

When French know-how meets unparalleled safety standards

Zephalto offers a unique experience for its guests in unequalled conditions of comfort and safety. The pressurized capsule, designed by Joseph Dirand, renowned French architect, is an exceptional object in itself. It adapts to the travelers' wishes to offer them a tailor-made, gentle and contemplative, spatial experience.

Zephalto’s technologies do not require any heavy infrastructure and thus offer great freedom of choice for the location of take-off, in harmony with the environment.

Engineer working in Toulouse
Engineer working in Toulouse
Engineer working in Toulouse


Our balloon and capsule, Celeste, is a technological masterpiece, developed with the same requirements as civil aviation.


11 upcoming patents will be associated with the Zephalto project.

Operational Excellence

Operating more than 150 procedures registered by the French space agency (CNES).


The capsule is the only one made of composite fibers, a material that offers exceptional strength and lightness properties.

Landing Systems

Most advanced technologies for the smoothest Earth landing, on air cushions.

CNES partnership

Thanks to an exclusive technological transfer, more than 60 years of work is shared with Zephalto's engineers.


All our operations are monitored from both air and Earth by world famous experts.

Frequently asked questions

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