Narrative:

From [departure airport] to law; uneventful flight until descent into law. ATIS calling better than 5/5. However; broken layer at 4;000 to 7;000. Descending from 7;000 to 3;000 ATC (ft. Sill) asks to call runway in sight. We are IMC. Asks if we want a vector to downwind (presently direct to airport in descent at 6;000). Yes; vectored 60 degrees right for left downwind. I noted to first officer (first officer) this was a bit extreme. We descend below 4;000 and see runway. Ft. Sill clears us for visual to runway 17. We are very wide on the downwind; so I begin to return back to my usual road for the visual to runway 17. We switch to tower. Cleared to land 17. I had fully briefed that I would be 2;600 downwind with gear down; flaps 45. I would turn within 2 miles to the base leg at approach speed and 2;300; then 1800 feet turn final. Approximately when I thought I was exactly downwind abeam about to call flaps 45; tower says ft. Sill wants us to turn base. I think wow; that's pretty close in for base; so I turn. In the turn I see only red roofed buildings and realize this is not law. I said to the first officer; this is not law. That's when tower says to turn left 200 and climb to 3;000. I complete this and see law in front of us approximately 4 miles. I set up to land at law and am again cleared to land by the tower.first I have been to law on several different occasions and am familiar with the field and the visual to 17. I briefed exactly how I would execute this arrival and approach. I reviewed the company 10-7 page to make sure we were aware of the factors involved. I did not note that there was an exact replica airport (ft. Sill) that was 4 miles north of the law airport and double checked after this mistake. I had not noticed this airport during prior visual approaches.please add that there is another airport that is set up exactly like law just 4 miles to the north.I had commuted in the night prior and had to fly to ZZZ1 then ZZZ to get to work. I can easily say I am tired and that played a factor. I am not fatigued; however I have flown over 40 plus hours in the past 9 days. This is the first leg of a four day with a new first officer. Ft. Sill and law tower never indicated that I had the improper airport in sight. Law tower might have given an indication that law was at my 9 o'clock; but no input from them.I take full responsibility for the incorrect identification of law.in 37 years of flying I have never lined up for the incorrect airport. I could have had the first officer create a line from 17 out 3 miles to assist in my situational awareness; however we were busy with the weather that was not noted on the ATIS.I will be more communicative with ATC & ft. Sill when asking for vectors to the 17 runway. I will insure that I have set up a point from 17 to approximately 3 miles. If weather permitting I will ask for a straight in to 35.

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Original NASA ASRS Text

Title: Air carrier flight crew reported lining up with the wrong airport on a visual approach to LAW.

Narrative: From [departure airport] to LAW; uneventful flight until descent into LAW. ATIS calling better than 5/5. However; broken layer at 4;000 to 7;000. Descending from 7;000 to 3;000 ATC (Ft. Sill) asks to call runway in sight. We are IMC. Asks if we want a vector to downwind (presently direct to airport in descent at 6;000). Yes; vectored 60 degrees right for left downwind. I noted to First Officer (FO) this was a bit extreme. We descend below 4;000 and see runway. Ft. Sill clears us for visual to runway 17. We are very wide on the downwind; so I begin to return back to my usual road for the visual to runway 17. We switch to tower. Cleared to land 17. I had fully briefed that I would be 2;600 downwind with gear down; flaps 45. I would turn within 2 miles to the base leg at approach speed and 2;300; then 1800 feet turn final. Approximately when I thought I was exactly downwind abeam about to call flaps 45; Tower says Ft. Sill wants us to turn base. I think wow; that's pretty close in for base; so I turn. In the turn I see only red roofed buildings and realize this is not LAW. I said to the FO; this is not LAW. That's when Tower says to turn left 200 and climb to 3;000. I complete this and see LAW in front of us approximately 4 miles. I set up to land at LAW and am again cleared to land by the tower.First I have been to LAW on several different occasions and am familiar with the field and the visual to 17. I briefed exactly how I would execute this arrival and approach. I reviewed the Company 10-7 page to make sure we were aware of the factors involved. I did NOT note that there was an exact replica airport (Ft. Sill) that was 4 miles north of the LAW airport and double checked after this mistake. I had not noticed this airport during prior visual approaches.Please add that there is another airport that is set up exactly like LAW just 4 miles to the north.I had commuted in the night prior and had to fly to ZZZ1 then ZZZ to get to work. I can easily say I am tired and that played a factor. I am not fatigued; however I have flown over 40 plus hours in the past 9 days. This is the first leg of a four day with a new FO. Ft. Sill and LAW tower never indicated that I had the improper airport in sight. LAW tower might have given an indication that LAW was at my 9 o'clock; but no input from them.I take full responsibility for the incorrect identification of LAW.In 37 years of flying I have never lined up for the incorrect airport. I could have had the FO create a line from 17 out 3 miles to assist in my situational awareness; however we were busy with the weather that was not noted on the ATIS.I will be more communicative with ATC & Ft. Sill when asking for vectors to the 17 runway. I will insure that I have set up a point from 17 to approximately 3 miles. If weather permitting I will ask for a straight in to 35.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.