What Terminal is Frontier at SFO? Frontier SFO Terminal figures out the significance of unwinding and health during your excursion. Exploit the devoted unwinding regions where you can loosen up and re-energize previously or after your flight. Appreciate happy with seating, mitigating feel, and conveniences intended to improve your prosperity. Whether you favor a calm corner to peruse a book or look for a reviving back rub, Frontier SFO Terminal gives spaces to you to focus on taking care of oneself.