What terminal is Alaska at Ontario airport? Alaska Airlines operates out of Terminal 2 at Ontario International Airport (ONT). This is the same terminal for Delta Air Lines, Frontier Airlines, JetBlue, United Airlines, and Volaris. Terminal 4 is used by American Airlines, Hawaiian Airlines, and Northern Pacific Airways.
If you are flying Alaska Airlines out of Ontario Airport, you should arrive at Terminal 2 at least two hours before your flight is scheduled to depart. This will give you plenty of time to check in, go through security, and find your gate.
