UK ETA for Chelsea Flower Show 2026 — Everything International Visitors Need to Know

By the application-eta.uk Expert Team · Last updated: April 2026 · Reviewed by Martin Cage, Senior UK ETA Specialist

The RHS Chelsea Flower Show runs from 19 to 24 May 2026 at the Royal Hospital Chelsea in the heart of London — the world’s most famous horticultural event and one of the great fixed points of the British social calendar. More than 160,000 visitors attend across the six-day show, including a substantial international contingent from Europe, North America, Australasia, and Asia who travel specifically for the event each year.

Since February 2026, international visitors from 85 nationalities must hold a valid UK ETA before boarding any transport to the United Kingdom. For Chelsea Flower Show visitors, this means organising your ETA well in advance of your May travel dates — ideally as soon as your tickets are secured. This guide covers everything you need to know.

1. Do I Need a UK ETA for Chelsea Flower Show?

Yes — if you are travelling from any of the 85 nationalities currently eligible for the UK ETA scheme (which includes all EU member states, the United States, Canada, Australia, New Zealand, Japan, South Korea, and the GCC countries), you are required to hold a valid ETA before any transport departing for the UK.

The ETA is not a visa. It is a digital pre-clearance linked to your passport — no embassy appointment, no paperwork, no queues. Most applications are approved within minutes. The government fee is £20 per person as of April 2026. The ETA is valid for 2 years with unlimited entries, meaning a single application covers not only Chelsea Flower Show but any subsequent trips to the UK within that period.

2. About the Show: What Makes Chelsea Unmissable

The RHS Chelsea Flower Show has been held at the Royal Hospital Chelsea since 1913. It occupies 11 acres of the hospital grounds in the heart of Chelsea, just minutes from the Thames, and draws exhibitors, designers and plant nurseries from across the world. The show’s centrepiece is the Great Pavilion — a vast structure housing competitive floral and plant exhibits — surrounded by the show gardens that attract the greatest press and public attention each year.

Chelsea operates on a strict ticketing system, with each day allocated a specific number of admissions. Tickets sell out quickly — particularly for Press Day (19 May, by invitation only) and the RHS Members’ Preview (also early in the week). Public access runs from Wednesday 20 to Sunday 24 May 2026, with Monday evening and last-day sessions particularly sought after.

The show’s reputation draws horticultural professionals, garden designers, and passionate amateurs in equal measure. RHS Chelsea is widely regarded as the world’s premier horticultural showcase — where garden trends are set, designer careers are launched, and plant varieties are unveiled to global audiences. For many international visitors, attending Chelsea is a once-in-a-lifetime bucket-list experience; for others, it is an annual ritual. In either case, the ETA is a straightforward prerequisite that should be secured well before departure.

3. UK ETA Details: Cost, Validity, How to Apply

The application process is entirely online and typically completed in a few minutes. There is no need to visit an embassy, attend an appointment, or provide documents beyond your passport details and a recent photograph. Here is a summary of the key parameters for Chelsea Flower Show visitors.

Our step-by-step application guide covers the process in full, including the photograph standards, the information you will need to have to hand, and what to do if your application requires additional review. Once submitted, you can check your status instantly via our status lookup tool.

4. May in London: Other Events to Combine

Chelsea Flower Show week is one of the most vibrant periods in the London calendar — and a single ETA is valid for your entire UK stay and for subsequent trips within the 2-year window. Many international Chelsea visitors combine the show with wider London and England experiences, all covered by a single ETA application.

Many Chelsea visitors — particularly those travelling from Australia, the United States, or continental Europe — extend their UK stay to take in the great English country house gardens that reach their peak in May and June. Gardens such as Sissinghurst, Hidcote, Great Dixter, and the gardens of the Cotswolds are all accessible as day trips from London and are directly connected to the Chelsea horticultural tradition. A single ETA covers all of these.

5. Planning Your Visit Around the ETA

The timing of Chelsea Flower Show — late May — gives international visitors ample opportunity to apply for their ETA well in advance. Unlike August events where summer travel volume creates time pressure, May applications should encounter no particular delays. Nevertheless, the principle of applying early remains sound: the ETA is valid for 2 years, costs the same whenever you apply, and there is simply no benefit to waiting.

One practical point for visitors who renewed their passport over the winter: a significant number of Chelsea visitors are regular UK travellers who may have obtained an ETA for a previous UK trip. If your passport has been renewed since that previous ETA, your new passport is not connected to the old authorisation — you need a new ETA on your current passport number. Check your existing ETA status (if any) via our status check tool before assuming you are already covered.

6. Seniors, Group Tours and Garden Societies

Chelsea Flower Show has a particularly strong appeal among older visitors — the show’s horticultural depth, its civilised pace, and its status as a bucket-list experience make it a favourite destination for senior travellers, garden society tours, and organised group visits from RHS international members.

For senior visitors, the ETA application process is fully online and straightforward, but our senior citizens guide addresses the specific questions that older travellers most commonly ask — including what happens if you need reading glasses to complete the online form, how to get help if you are not confident with digital applications, and what the process looks like if English is not your first language.

For garden society group tours and organised travel groups — where a tour operator or society secretary is coordinating travel for multiple members simultaneously — our Dedicated Agent service handles multiple applications in parallel, ensuring every member of the party has their ETA confirmed well before departure day. Group leaders who have managed UK travel for horticultural tours in previous years will notice that the ETA is an additional step compared to pre-2025 practice, particularly for EU member groups whose nationals previously entered without any pre-clearance requirement.

7. Practical London Tips for Flower Show Visitors

The Royal Hospital Chelsea is located in the SW3 postal district, a short walk from Sloane Square Underground station (District and Circle lines) and easily accessible from all major London arrival points. The show runs from 8am to 8pm on most days, with a special late-evening finale session on the Sunday.

Visitors arriving by air will typically enter through Heathrow (LHR), Gatwick (LGW) or London City (LCY) airports. All ETA checks occur at departure — your ETA must be confirmed before you board your flight or Eurostar, not at the UK border itself. For visitors transiting through a UK airport on the way to another destination — for example, connecting through Heathrow on a flight that originates outside the UK — different rules apply. Our Heathrow transit guide explains when an ETA or airside transit visa is required for layovers.

8. Frequently Asked Questions