EVENT 205 Women Open 50m Butterfly - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 3 | 1 | Ella Homan | 15 | Manchester | |
| 4 | 3 | Louise Ashford | 17 | Victoria | 38.30 |
| 5 | 2 | Megan Barnes | 19 | Manchester | |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 5 | Maisie Dickinson | 15 | Auckland | 35.10 |
| 2 | 7 | Megan Speirs | 18 | Delhi | 32.10 |
| 3 | 9 | Sophie Traill | 15 | Auckland | 30.90 |
| 4 | 11 | Matilda Ransome | 16 | Delhi | 30.39 |
| 5 | 10 | Ruby Griffiths | 16 | Kuala Lumpur | 30.74 |
| 6 | 8 | Anna Farr | 15 | Gold Coast | 31.80 |
| 7 | 6 | Ruby Stephenson | 15 | Victoria | 32.17 |
| 8 | 4 | Erin McCarthy | 15 | Kuala Lumpur | 37.40 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 13 | Darcy Revitt | 17 | Melbourne | 30.08 |
| 2 | 15 | Merissa Booth | 17 | Auckland | 29.77 |
| 3 | 17 | Henrietta D'Ammassa | 17 | Kuala Lumpur | 29.52 |
| 4 | 19 | Anna Farrow | 17 | Kuala Lumpur | 29.00 |
| 5 | 18 | Georgia Holgate | 15 | Glasgow | 29.30 |
| 6 | 16 | Lucy Buckingham | 16 | Gold Coast | 29.75 |
| 7 | 14 | Despoina Giannakaki | 15 | Glasgow | 29.80 |
| 8 | 12 | Eja Coe | 16 | Manchester | 30.16 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 21 | Kennedy Gordon | 17 | Delhi | 28.56 |
| 2 | 23 | Chloe Harris | 17 | Glasgow | 28.47 |
| 3 | 25 | Blythe Kinsman | 15 | Manchester | 27.87 |
| 4 | 27 | Eva Okaro | 16 | Victoria | 27.61 |
| 5 | 26 | May Bradburn | 18 | Glasgow | 27.84 |
| 6 | 24 | Emma Croker | 17 | Gold Coast | 28.38 |
| 7 | 22 | Constance Phillips | 16 | Delhi | 28.50 |
| 8 | 20 | Laura Dickinson | 17 | Melbourne | 28.69 |