A lot of iPad Air users are having issues with the mobile Safari browser crashing frequently. In fact, this is one of the most common complaints that we receive.
1.Make sure that the latest version of iOS is installed on your device.
2.Tap Settings > Safari and tap Clear History and Clear Cookies and Data.
3.Restart your iPad Air. Simply press the off/on button for a few seconds, until you see a red slider that says “slide to power off.” Then slide the slider. To turn the iPad back on, just press the o/off button until you see the Apple logo appears.
4.Try turning on Reduce Motion (Settings > General > Accessibility > Reduce Motion).
5.Also see these recommendations.
6.This could be due to a lack of memory. See these tips.
7.If nothing works then go to Settings > iCloud > Storage & Backup > Back Up Now (or back up via iTunes; iTunes vs iCloud). Now go to Settings > General > Reset > Erase All Content and Settings (note that this will remove /delete all current content and settings from your device) and set the iPad Air up again and restore your backup.