The following is Alaska Airlines' policy on same-day flight changes:
Each traveller may apply for Alaska Airlines flight change policy on the same day if they match the requirements.
- A verified flight reservation with Alaska Airlines is required.
- Up to 48 hours before the departure of their last flight, passengers may seek changes.
- It is not possible for passengers to change their home airport in order to connect to flights to other cities.
- This law prohibits passengers from changing terminals to modify their tickets.
- Passengers can change their flight via the standard flight change procedure if they are unable to meet the aforementioned requirements.
Also visit : American Airlines flight change policy