Mariah Carey will play nine dates in six European countries on her Firefly Summer Festivals Tour in 2027. The run opens in Sønderborg, Denmark, on June 24 and finishes in Locarno, Switzerland, on July 20. Four UK dates fall between the two, including Cardiff Castle and Blenheim Palace, with the UK general sale scheduled for November 13 at 9 a.m. local time.
Mariah Carey will start her European summer run at Mølleparken in Sønderborg. The June 24 date is the first of nine she announced on November 9 under the Firefly Summer Festivals Tour banner. The schedule takes her through Denmark, the United Kingdom, Germany, Italy, Belgium and Switzerland in just under four weeks, with most of the concerts taking place outdoors.
The British part starts on June 27 at the grounds of Powderham Castle, near Exeter. Carey then plays Cardiff Castle on June 29, Blenheim Palace in Oxfordshire on July 1 and Scarborough Open Air Theatre on July 3. It is the most concentrated stretch of the run. The four venues are spread across England and Wales, offering several options for listeners who want to see the same tour without travelling to a festival on the continent.
Mariah Carey moves on to Jazz Open Stuttgart on July 8. Lucca Summer Festival follows on July 11, then Francofolies de Spa in Belgium on July 14. The final stop announced so far is Switzerland’s Moon & Stars festival in Locarno on July 20. Those dates put Carey on established festival programmes as well as the individually promoted outdoor shows on the UK leg.
The dates currently announced for Mariah Carey are June 24, Sønderborg, Mølleparken. June 27, Exeter, Powderham Castle Grounds. June 29, Cardiff, Cardiff Castle. July 1, Oxfordshire, Blenheim Palace Grounds. July 3, Scarborough, Open Air Theatre. July 8, Stuttgart, Jazz Open. July 11, Lucca, Lucca Summer Festival. July 14, Spa, Francofolies de Spa. July 20, Locarno, Moon & Stars.
The UK general sale is scheduled for Friday, November 13, at 9 a.m. local time. Some organisers have announced earlier access, including a Cardiff presale on November 12. The dates outside Britain have their own sales schedules. Lucca had already begun selling tickets before the wider route was announced, while Stuttgart had published ticket information through its festival channels. A sale time for one stop therefore tells prospective buyers little about availability at another.
Support also varies by venue. Eternal have been announced for selected British dates, with the Sugababes also named for Exeter. The booking gives the Powderham Castle date its own lineup. A festival ticket in Stuttgart or Spa, meanwhile, is sold under that event’s arrangements, which can differ from the terms for a standalone show. Each stop has its own promoter information about who is playing and what admission covers.
The choice of venues gives the run a character that is easy to miss in a list of cities. A castle ground and a palace lawn can accommodate a concert audience while retaining much of their usual setting. Scarborough offers an established outdoor theatre. The later stops place Mariah Carey within summer festivals with their own identities, so the setting will change considerably even across dates that share the Firefly name.
Carey’s recent concert calendar has included special appearances and holiday shows. The dates announced here are a separate summer programme. They arrive after Here For It All, her 16th studio album, which entered the Billboard 200 at No. 7. That brought her to 19 albums in the US chart’s top ten. The Firefly announcement leaves the set list open, including how much of the newer album will sit alongside the songs audiences already know.
Mariah Carey has announced nine shows rather than a full account of every appearance she might make in 2027. There is no Greek date on the published route. Denmark and Switzerland mark the two ends of the itinerary as it stands, and fans comparing options can distinguish between the four UK shows, with their shared general-sale date, and the continental events with individual ticket schedules.
The first decision for most UK listeners comes before the tour begins, when the presale and general sale open in November. The four British dates are close together on the calendar but far enough apart geographically to serve different audiences. June ends in Cardiff, July begins at Blenheim Palace and the final UK night is in Scarborough. Mariah Carey then has five days before the Stuttgart festival, where the second stretch of the announced route begins.
