B737-700
Flight Crew Air Transport Pilot (ATP)
Communication Breakdown; Confusion; Distraction; Situational Awareness
Deviation / Discrepancy - Procedural Published Material / Policy
Flight Crew Became Reoriented
Airport; Environment - Non Weather Related; Human Factors
Prior to the Before Takeoff Checklist we noticed flaps were not set. We stopped and set the parking break and then set flaps. We then completed appropriate checklists.I have never made this error. Perhaps being more aware of threats. We were distracted by a possible runway change which never came to fruition.
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A B737 First Officer reported taxiing the aircraft for departure prior to having the flaps set for takeoff.