Route Description:
Route 21 Kirby / Ventura Frequent provides high-frequency bus service (every 20 minutes or less during midday) along the FM 78 corridor in northeast San Antonio and Converse. It connects Kirby Middle School, local neighborhoods, Walmart, and the Fort Sam Houston area, offering convenient access for military personnel, students, shoppers, and residents.
Main Stops:
- Converse
- Kirby
- Downtown
Route Updates
To Be Implemented 5-4-2026
Frequency Improvements
• Increase frequency from 30 minutes to 20 minutes, weekdays; and from 60 minutes to 30 minutes, weekends.
Rider Information
Fare Details
| Fares | Full | Reduced |
|---|---|---|
| 31-Day Pass | $38.00 | $19.00 |
| 7-Day Pass | $12.00 | $6.00 |
| Day Pass | $2.75 | $1.35 |
| Semester Pass | $38.00 | — |
| Annual Pass | $365.00 | — |
| Regular Bus | $1.30 | $0.65 |
| Express Bus Service | $2.60 | $1.30 |
| Transfers | FREE | FREE |
| VIA Link | $1.30 | $0.65 |
| VIAtrans Service | $2.00 | — |
| VIAtrans Child | $0.90 | — |
| Park & Ride Service | $1.30 | $0.65 |
| Vanpool Service | See pricing schedule | See pricing schedule |
Holiday & Fiesta Schedules
Bus service on VIA observed holidays will be provided as follows:
SATURDAY SCHEDULE: Martin Luther King Day, Memorial Day, Friday after Thanksgiving, New Year’s Eve and Christmas Eve.
SUNDAY SCHEDULE: New Year’s Day, Independence Day, Labor Day, Thanksgiving and Christmas.
FIESTA SCHEDULE: Times are subject to change during the Fiesta parades. Please refer to the Fiesta page details.
Riders with Disabilities
All VIA buses and many stops are now accessible to riders with disabilities. Visually impaired riders can get help at stops using the Navilens apps.
Bike & Ride
You and your bike (including e-bikes) can go anywhere VIA goes. On the larger Prímo vehicles, there are bike racks inside the vehicle and on all other buses the bike rack is outside the bus in the front.