According to Universal Music Japan, FRONTIERS by JOURNEY has sold 10,000,000 copies worldwide. The album sold best in United States (6,000,000 copies), Japan (290,400 copies) and Canada (100,000 copies).
FRONTIERS certifications and sales
| Country / region | Sales | Certification / source | Certification date / sales as of | |
 Canada |
100,000 | 1x Platinum | 1983 |
Canada Sales: 100,000
Certification / note: 1x Platinum
Certification Date / sales as of: 1983
|
 Japan |
290,400 | Oricon charts |
Japan Sales: 290,400
Certification / note: Oricon charts
Certification Date / sales as of:
|
|
 United States |
6,000,000 | 6x Platinum | 16 May, 1997 |
United States Sales: 6,000,000
Certification / note: 6x Platinum
Certification Date / sales as of: 16 May, 1997
|
| Worldwide sales | 10,000,000 | Universal Music Japan |
Total
Sales: 10,000,000
Source: Universal Music Japan
|