The semifinals of Season 18 of American Idol was comprised of twenty singers. It started on April 26, 2020.
Contestants[]
Top 20[]
| Kimmy Gabriela | "Leave Me Lonely" (Ariana Grande, ft. Macy Gray) | Eliminated |
| Jovin Webb | "With a Little Help from My Friends" (Joe Cocker) | Advanced |
| Franklin Boone | "Everybody Wants to Rule the World" (Tears for Fears) | Eliminated |
| Olivia Ximines | "Bad Guy" (Billie Eilish) | Eliminated |
| Louis Knight | "If the World Was Ending" (JP Saxe, ft. Julia Michaels) | Advanced |
| Makayla Phillips | "Greedy" (Ariana Grande) | Saved |
| Aliana Jester | "Run to You" (Whitney Houston) | Eliminated |
| Faith Becnel | "River" (Bishop Briggs) | Eliminated |
| Nick Merico | "Hey There Delilah" (Plain White T's) | Eliminated |
| Lauren Spencer-Smith | "Mamma Knows Best" (Jessie J) | Eliminated |
| Cyniah Elise | "Warrior" (Demi Lovato) | Eliminated |
| Francisco Martin | "Teenage Dream" (Katy Perry) | Advanced |
| Sophia James | "Burning" (Maggie Rogers) | Advanced |
| DeWayne Crocker Jr. | "I Got You (I Feel Good)" (James Brown) | Eliminated |
| Dillon James | "Let It Be Me" (Ray LaMontagne) | Advanced |
| Arthur Gunn | "Lovin' Machine" (Wynonie Harris) | Advanced |
| Julia Gargano | "Human" (Christina Perri) | Advanced |
| Grace Leer | "Cry" (Faith Hill) | Advanced |
| Just Sam | "I Believe" (Fantasia Barrino) | Advanced |
| Jonny West | "What a Wonderful World" (Louis Armstrong) | Advanced |
Trivia[]
- The live shows were likely going to originally start on April 12, 2020, but due the COVID-19 pandemic, taping was temporarily stopped and the Top 20 were sent home to be with their families.
- The episode ultimately aired on April 26, 2020, with the contestants and judges performing and judging from their homes.
Gallery[]
- Main article: Season 18/Gallery#Top 20
