Click "Change" for the flight you wish to change from "Reservation Details"

Check the information in the "Guidelines" and click "Confirm reservation changes"​

Enter the flight date, departure airport, and arrival airport you wish to change on "Reservation Change Inquiry"

After entering the flight you wish to change in "Reservation Change Inquiry", tap "Search"​

"Reservation Inquiry Results" The fare for each flight will be displayed, so click on the flight you want to change.​

Click the fare you wish to change in the "Reservation Change Inquiry Results" and click "Next"​

Check the "Change Reservation Information" in "Reservation Change Details" and if there are no problems, click "Complete Changes"​

The message "Reservation change accepted" will be displayed and the reservation change will be completed.

On the "Reservation Details" screen, tap "Change Flight" for the flight you wish to change.​

Tap "Next" under "Guidance"

Enter the flight date, departure airport, and arrival airport you wish to change on "Reservation Change Inquiry"

After entering the flight you wish to change in "Reservation Change Inquiry", tap "Search"​

The search results for reservation changes will be displayed, so tap "Click here for seat availability by fare" for the flight you want to change.

Tap "Select" for the fare you wish to change to in the "Reservation Change Inquiry Results"

Check the "Change Reservation Information" in "Reservation Change Details" and tap "Confirm" if there are no problems.

The message "Reservation change accepted" will be displayed and the reservation change will be completed.