To delete custom alerts from our mobile app, please tap on the "Alerts" icon at the bottom of the screen. Then tap on "Custom alerts" to view your current alerts. You can tap and hold your finger over any alert and drag it to the left to reveal the delete button. Tap on the delete button to remove the alert from the list.
Please check our screenshots below to learn more about deleting custom alerts.
Our custom alerts are only available through our mobile app. But through the website, it's possible to set up email alerts. To do that you should click the user profile icon in the top right corner of your screen and then select "Email alerts". (https://www.flightradar24.com/account/alerts). From there you can set up new email alerts and manage the existing ones. To delete an email alert, you should click the "X" found on the right side of the alert. See our screenshot below for more details. Once you have clicked the "X", the alert is deleted and you won't receive any new email alerts with that trigger.