| 2019-01-19 | UFC Fight Night: Cejudo vs. Dillashaw | Flyweight | Joseph Benavidez def. Dustin Ortiz | Decision (unanimous) (29–28, 29–28, 29–28) | 3 | 5:00 |
| 2018-07-28 | UFC on Fox: Alvarez vs. Poirier 2 | Flyweight | Dustin Ortiz def. Matheus Nicolau | KO (head kick and punches) | 1 | 3:49 |
| 2018-01-20 | UFC 220: Miocic vs. Ngannou | Flyweight | Dustin Ortiz def. Alexandre Pantoja | Decision (unanimous) (29–28, 29–28, 29–28) | 3 | 5:00 |
| 2017-08-05 | UFC Fight Night: Pettis vs. Moreno | Flyweight | Dustin Ortiz def. Hector Sandoval | KO (punches) | 1 | 0:15 |
| 2017-04-22 | UFC Fight Night: Swanson vs. Lobov | Flyweight | Brandon Moreno def. Dustin Ortiz | Technical Submission (rear-naked choke) | 2 | 4:06 |
| 2016-12-10 | UFC 206: Holloway vs. Pettis | Flyweight | Dustin Ortiz def. Zach Makovsky | Decision (split) (29–28, 28–29, 29–28) | 3 | 5:00 |
| 2016-09-24 | UFC Fight Night: Cyborg vs. Länsberg | Flyweight | Jussier Formiga def. Dustin Ortiz | Decision (unanimous) (30–27, 29–27, 29–28) | 3 | 5:00 |
| 2016-01-30 | UFC on Fox: Johnson vs. Bader | Flyweight | Wilson Reis def. Dustin Ortiz | Decision (unanimous) (30–27, 30–27, 30–27) | 3 | 5:00 |
| 2015-08-08 | UFC Fight Night: Teixeira vs. Saint Preux | Flyweight | Dustin Ortiz def. Willie Gates | TKO (elbows and punches) | 3 | 2:58 |
| 2014-11-22 | UFC Fight Night: Edgar vs. Swanson | Flyweight | Joseph Benavidez def. Dustin Ortiz | Decision (unanimous) (30–27, 30–27, 30–27) | 3 | 5:00 |
| 2014-07-06 | The Ultimate Fighter: Team Edgar vs. Team Penn Finale | Flyweight | Dustin Ortiz def. Justin Scoggins | Decision (split) (29-28, 28–29, 29–28) | 3 | 5:00 |
| 2014-04-19 | UFC on Fox: Werdum vs. Browne | Flyweight | Dustin Ortiz def. Ray Borg | Decision (split) (28–29, 29–28, 29–28) | 3 | 5:00 |
| 2014-01-15 | UFC Fight Night: Rockhold vs. Philippou | Flyweight | John Moraga def. Dustin Ortiz | Decision (split) (28–29, 29–28, 29–28) | 3 | 5:00 |
| 2013-11-09 | UFC Fight Night: Belfort vs. Henderson 2 | Flyweight | Dustin Ortiz def. José Maria Tomé | TKO (punches) | 3 | 3:19 |