Hi! I had a very smooth experience at the SFO Frontier Airlines Terminal. The check-in process was quick, and the crew were courteous and friendly. The security was a breeze, too, which was a pleasant bonus. The terminal itself is spotless, has reasonable food outlets, and enough charging points to go around. It's not fancy, but it gets you there quickly. I wouldn't object to flying Frontier from Airlines again. Just make sure to arrive early and have snacks because facilities are a bit scarce. All in all, a good experience for budget travel!