A visitor to the Frontier Airlines Tokyo office at Haneda Airport shared a positive experience, appreciating the 24-hour availability of the office. They found the staff to be helpful and knowledgeable, offering assistance with both ticketing and baggage queries. While the office is somewhat small, the service was prompt and efficient, providing the necessary support for their travel needs. Visitors also noted the convenient location within the airport, making it easy to access for any immediate concerns during their trip.