The following are the steps to upgrade a flight seat on Alaska Airlines:
- Go to the airline's official website and search for the "manage reservations" option.
- After that, choose the seat upgrade tab from the list of choices and continue.
- If necessary, you can input your booking number and additional flight information.
- If your flight permits seat upgrades, proceed to the online procedures and select one of your preferred seats by Alaska Airlines First class Upgrade.
- You can choose between paying with miles or with cash. And after that, upgrading your flying seat is simple.