Air Traffic Services and Technology
Class B Airspace as of September 2001
| NAME | CEILING-MSL | DIAMETER NM | FLYWAY CHART |
| Atlanta | 12,500 | 35 | Yes |
| Balto-Wash. | 10,000 | 20 | Yes |
| Boston | 7,000 | 20 | No |
| Charlotte | 10,000 | 30 | Yes |
| Chicago | 10,000 | 25 | Yes |
| Cincinnati | 8,000 | 25 | Yes |
| Cleveland | 8,000 | 20 | No |
| Dallas-FW | 11,000 | 30 | Yes |
| Denver | 12,000 | 30 | Yes |
| Detroit | 8,000 | 20 | Yes |
| Honolulu | 9,000 | 20 | No |
| Houston | 10,000 | 30 | Yes |
| Kansas City | 8,000 | 20 | No |
| Las Vegas | 9,000 | 36 | Yes |
| Los Angeles | 10,000 | * | Yes |
| Memphis | 10,000 | 30 | No |
| Miami | 7,000 | 20 | Yes |
| Minn-St. Paul | 8,000 | 20 | No |
| New Orleans | 7,000 | 20 | No |
| New York | 7,000 | 20 | No |
| Orlando | 10,000 | 30 | Yes |
| Philadelphia | 7,000 | 20 | No |
| Pittsburgh | 8,000 | 20 | No |
| Phoenix | 10,000 | 25 | Yes |
| St. Louis | 8,000 | 30 | Yes |
| Salt Lake | 10,000 | 25 | Yes |
| San Diego | 10,000 | * | Yes |
| San Francisco | 10,000 | 30 | Yes |
| Seattle | 10,000 | 30 | Yes |
| Tampa | 10,000 | 30 | No |
*San Diego and Los Angeles Class B areas are unusual, see chart for details.
Diameter is for basic design; some Class Bs have extensions. See individual charts for details.
