According to Billboard, GREATEST HITS by JOURNEY has sold 25,000,000 copies worldwide. The album sold best in United States (16,858,000 copies), United Kingdom (300,000 copies) and Canada (183,000 copies).
GREATEST HITS certifications and sales
| Country / region | Sales | Certification / source | Certification date / sales as of | |
 Canada |
183,000 | 1x Gold | 1989 |
Canada Sales: 183,000
Certification / note: 1x Gold
Certification Date / sales as of: 1989
|
 Ireland |
15,000 | 1x Platinum | 2007 |
Ireland Sales: 15,000
Certification / note: 1x Platinum
Certification Date / sales as of: 2007
|
 Japan |
109,000 | 1x Gold | June 2014 |
Japan Sales: 109,000
Certification / note: 1x Gold
Certification Date / sales as of: June 2014
|
 United Kingdom |
300,000 | 1x Platinum | 8 January,2021 |
United Kingdom Sales: 300,000
Certification / note: 1x Platinum
Certification Date / sales as of: 8 January,2021
|
 United States |
16,858,000 | 15x Platinum | 22 April, 2008 |
United States Sales: 16,858,000
Certification / note: 15x Platinum
Certification Date / sales as of: 22 April, 2008
|
| Worldwide sales | 25,000,000 | Billboard |
Total
Sales: 25,000,000
Source: Billboard
|