Our Customer Service team is pleased to answer any questions you may have about your dental benefits plan with Delta Dental of Oklahoma.

Contact Customer Service
Monday - Thursday, 7:00 a.m. - 6:00 p.m.
Friday, 7:00 a.m. - 5:00 p.m.

405-607-2100 (OKC Metro)
800-522-0188 (Toll Free)

2026 Holiday Schedule

• December 24-26, 2025 Christmas Holiday
• January 1-2 New Year's Holiday
• February 16 Presidents' Day
• April 3 Good Friday
• May 22-25 Memorial Day Holiday
• June 19 Juneteenth
• July 3-6 Independence Day Holiday
• September 4-7 Labor Day Holiday
• October 16 Fall Holiday
• November 25 Thanksgiving Holiday (close at noon)
• November 26-27 Thanksgiving Holiday
• December 24-25 Christmas Holiday
• December 31 New Year's Holiday
• January 1, 2027 New Year's Day