These times are very important if you want to make your flight. If you haven't already checked in online, you must be in line to check in at least 2 hours prior to departure to ensure you are checked in with a boarding pass in hand no later than 60 minutes prior to your flight's departure.

For Frontier Airlines flights, the recommended check-in time is at least 2 hours before departure for domestic flights and 3 hours for international flights.

However, the exact timing and options are crucial because Frontier has specific policies and fees. Here’s a detailed breakdown:

Key Check-In Windows & Deadlines

1. Online/Mobile Check-In (FREE & Highly Recommended)

   • Opens: 24 hours before departure.
   • Closes: 60 minutes before departure for domestic flights and 60 minutes before international flights (to/from the U.S.). This is a firm deadline.
   • Why do it? It’s free, saves time at the airport, and is the only way to avoid the “Agent Assistance Fee” (see below).

2. Airport Kiosk or Counter Check-In

   • Available: If you miss the online window.
   • Fees Apply: If you check in at the airport with an agent, Frontier charges a “Agent Assistance Fee” (per person, per segment). This fee is $25 if paid at the airport, but can be lower if pre-paid during online check-in.
   • Deadline: Typically 45 minutes before departure, but this can vary by airport. Don’t cut it this close.

Important Frontier-Specific Rules

• Baggage: If you are carrying on or checking a bag, you must visit the bag drop counter even after online check-in. Baggage cutoff times are strict:
  • Checked Bags: Must be dropped at least 60 minutes before