LE SSERAFIM will make history this September as they join the 2026 iHeartRadio Music Festival lineup in Las Vegas, becoming the first K-pop girl group ever to perform at the festival in the United States. The booking puts the Source Music act on one of mainstream radio’s biggest stages.
For U.S. fans searching “LE SSERAFIM iHeartRadio Music Festival 2026,” the key info is simple: the group performs on Day 2 at T-Mobile Arena, with the entire festival airing across American radio, Disney+ and Hulu. What makes this more than a schedule update is the visibility it brings to K-pop girl groups.
LE SSERAFIM iHeartRadio Music Festival 2026: date and lineup
iHeartMedia announced on June 30 that LE SSERAFIM had been added to the 2026 iHeartRadio Music Festival, presented by Capital One and held at T-Mobile Arena in Las Vegas. The two day festival runs September 18 and 19, with the group set for the Saturday night stage on September 19.
They join a stacked, cross genre lineup that includes BTS, Benson Boone, Cardi B, Goo Goo Dolls, Kenny Chesney, Lainey Wilson, Major Lazer, Muse, Snoop Dogg, Weezer, and Zara Larsson. Longtime U.S. host Ryan Seacrest will emcee, keeping the spotlight firmly on acts that define current pop culture.
Press quoting Source Music confirms that LE SSERAFIM will be the first K-pop girl group ever to perform at the iHeartRadio Music Festival in the U.S. Tickets for the 2026 edition are already on sale through AXS.com, putting a historic girl group moment within reach for fans willing to travel to Vegas.
Why this iHeart debut matters for K-pop girl groups
K-pop girl groups have already claimed major festival milestones, from BLACKPINK headlining Coachella in 2023 to TWICE leading Lollapalooza Chicago in 2025. The iHeartRadio Music Festival is different: it is built by a U.S. radio giant, aired nationwide, and designed for casual listeners who might never search for K-pop on their own.
By placing LE SSERAFIM alongside BTS, Cardi B, Snoop Dogg, and other radio staples, iHeart is treating a K-pop girl group as part of the core pop conversation. That move fits a larger pattern of U.S. firsts: they were the first K-pop girl group on America’s Got Talent and the first to perform on-site at Dick Clark’s New Year’s Rockin’ Eve in Times Square, and they will headline the closing ceremony at BlizzCon 2026.
How to watch LE SSERAFIM and what comes next in the U.S.
Not every fan can get to Las Vegas, but the 2026 iHeartRadio Music Festival is built to be experienced from anywhere. Each night will broadcast live across more than 150 iHeartMedia radio stations, while full performances stream on Disney+ and Hulu for subscribers.
- In person: tickets for the September 18 to 19 festival at T-Mobile Arena are available through AXS, the official ticketing partner.
- Radio: tune in to local iHeartRadio stations carrying the live broadcast on both festival nights.
- Streaming: watch the complete festival livestream on Disney Plus or Hulu in the U.S.
The festival also sits inside a packed September schedule, as LE SSERAFIM’s PUREFLOW world tour hits North America and keeps their U.S. presence continuous on both stages and screens.