If you booked through FlyFrontier.com or the Frontier app:
• We’ll notify you by email if there are any major changes to your flight. To ensure you receive updates, please make sure your contact information is current. You can also check your flight details anytime in the app or Manage Trip using your confirmation number.
If you booked through a travel agency or another website:
• The agency or site you booked with is responsible for informing you of any schedule changes. However, you can still view the latest updates by visiting Manage Trip on FlyFrontier.com.