i've used multiple computers, home and office, but with no success. i submit city pairs and dates only to get the following error:
No flights have been found because of one or more of the following reasons.
1. All flights for one or both dates you have requested are sold out.
2. Frontier may not fly between the requested cities. Please view our route map.
3. Flights may not operate on all days of the week.
4. If requesting Mexico, some cities have service less than daily. Please visit the Seasonal Timetables section for service schedules.
5. Service may be directional.
6. If you feel you need further assistance, please call our web help desk at 1-888-241-7821.
i've used a variety of city pairs and dates. i can browse for mileage seats after logging in, but can't shop by fares.