Always login in the same webpage and can't find the latest air fares when you use iPhone to book tickets? Then it must be Safari cookies playing tricks. Whenever you visit a webpage using the Safari web browser, it gets recorded in browser history or cookies so you can easily find that old page instead of the update one should you want to.
Therefore, it's necessary for you to clear internet browsing history or delete safari cookies. And in the following I'm to share two ways to delete Safari caches and search history for iPhone 7/SE/6s/6 Plus/SE/6/5s/5c/5/4S.
I highly recommend an all-in-one iOS cleanup and tuneup utility: Tenorshare iCareFone, with which you can thoroughly delete Safari cookies on iPhone. And below is the step-by-step guide for your reference.
First of all, download the program to your PC and launch it after installation. Then connect your iPhone to PC, click on "Speedup & Clean" category and select "Quick Scan".
Then you'll get a list of files you can clean displayed in the primary interface as the picture below.
Slide the button beside the "Junk Files" and "Temporary files" and click "Clean" to proceed.
After scanning, click "Clean Now" button on the pop-up window to delete cookies on your iPhone.
Alternatively, you can use a much easier way to clear cookies from iPhone Safari as below. But you must note that this can't permanently clear cookies on Safari, namely, you need to repeat the following operation time after time since it only works for a short period.
Launch the Setting app from the Home screen, scroll down tap on "Safari" and then tap "Clear Cookies and Data" or "Clear History".
After clearing web cookies and browsing history, relogin the webpage of booking flight ticket and you may be pleasantly surprised that ticket price should cost that little!