Medium Large Transport
Flight Crew Air Transport Pilot (ATP)
Distraction
Deviation - Speed All Types; Deviation / Discrepancy - Procedural Published Material / Policy; Inflight Event / Encounter Unstabilized Approach
Flight Crew Became Reoriented; Flight Crew FLC complied w / Automation / Advisory
Human Factors
On approach to Runway 22; we were IMC; an ILS and the First Officer (FO) was flying. We had SPS and an approach speed of roughly 153 with the gust. ATC had put us close behind a flight and we discussed the possibility of the go-around. The FO configured for flaps 3; gear down. We did the approach checklist to the line. Then I heard tower clear another flight to depart off of Runway 31. Then we discussed that it appeared that he had landed and the runway would be clear. During that; I lost my place and forgot that we had not put in FLAPS 5 or run 'below the line'. We passed 1000 feet; then 500 feet and then heard 'TOO LOW FLAPS'. I immediately noticed that we were not in FLAPS 5. I made the poor decision to not GO AROUND; but to move the flaps to position 5. At the same time I believe I heard the FO call FLAPS 5. I verified FLAPS 5 before landing. In my brain; I had made the decision to call a go-around if we were not configured before landing. We ended up configured before landing; before 200 feet I believe.We landed with no incident.Both the FO and I discussed afterwards that we had noticed the stall speed indication was higher than 'normal' but I was attributing it to gusting winds and the SPS configuration.
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Flight crew became distracted by traffic ahead on final approach and did not finish completing the final flaps configuration until just before touchdown.