Traveling with a budget airline like Frontier Airlines can be a cost-effective choice, especially when you know what to expect before reaching the airport. For passengers departing from or arriving at San Francisco International Airport (SFO), knowing the exact terminal and available services can make your journey far more manageable. SFO is one of the busiest airports in the United States, and like any major hub, navigating through it can be overwhelming if you're unprepared. That’s why understanding the setup for Frontier Airlines at SFO is essential—especially for first-time travelers or those flying during peak seasons.