Flight Crew Multiengine; Flight Crew Air Transport Pilot (ATP); Flight Crew Instrument
Situational Awareness
Deviation - Speed All Types; Deviation / Discrepancy - Procedural Published Material / Policy
Flight Crew Overcame Equipment Problem
Procedure
On climb out; First Officer noticed the flaps were still out at 300kias. We slowed down and retracted flaps and continued to destination.  FO saw flaps at 9. Crew did not complete after take off checklist correctly.  Slowed and retracted flaps. Crew should be more vigilant after take off and completed checklists. Also as you climb through 10;000 feet; check your configurations again.
Air carrier flight crew reported they failed to retract flaps after departure.