Narrative:

Arriving ZZZZ at the end of a 3 leg; 11 hour duty day. We were planned for a bleeds off; flaps 40 landing to accommodate the payload. We set up for the arrival and briefed the approach well prior to TOD (top of descent). We also pulled out the QRH and talked about the bleeds off landing. We could both tell fatigue was setting in and discussed how we could set things up early to mitigate screwing something up last minute.I had called the dispatcher prior to departure to discuss the need for the bleeds off landing. That is when he informed me we needed it to get the planned payload on. In discussing the bleeds off procedure in the QRH; my first officer said we could accomplish it at 17;000 ft. I asked him to wait until 14;000 ft; so we wouldn't drop any masks if we had any issues. At any rate; we wanted it done by zzzzz so we could focus on the approach. Out of 17;000 ft he started the bleeds off procedure before catching himself and saying 'sorry; you wanted me to wait until 14;000 ft.' that was an opportunity for us to briefly discuss the effects of fatigue setting in on us.on the arrival we got the usual slowdowns and vector off course. Approaching ZZZ we were cleared for the approach and followed the technique listed on the jepp page. Approaching the turn to ZZZZZ1; ATC (air traffic control) gave us a heading and altitude to fly through the localizer and we compiled. When we had sufficient spacing on traffic ahead we were given 020 and 8800 to join localizer and cleared for ILS DME X xxr. I disconnected autopilot and was hand flying to catch localizer and glideslope all the while at flaps 40. We were handed off to tower around ZZZZZ2. Tower initially said continue and so we did. In the short time we were on tower frequency; there were several communications in spanish as well as blocked transmissions. We were never able to secure a landing clearance. It was a very clear night and I could see our runway was clear of traffic. Feeling fatigued as I did; I elected to land. ATC never said a word about it and simply told us to hold short of yyl on taxiway F. My first officer told me he thought I did the right thing as he too was feeling the effects of fatigue. That was the hardest leg of the 3 we flew that day simply because of the destination and its challenges. Then throw in the fatigue factor and that is where we found ourselves.

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Original NASA ASRS Text

Title: B737 Captain flight crew reported a landing without clearance.

Narrative: Arriving ZZZZ at the end of a 3 leg; 11 hour duty day. We were planned for a bleeds off; flaps 40 landing to accommodate the payload. We set up for the arrival and briefed the approach well prior to TOD (Top Of Descent). We also pulled out the QRH and talked about the bleeds off landing. We could both tell fatigue was setting in and discussed how we could set things up early to mitigate screwing something up last minute.I had called the Dispatcher prior to departure to discuss the need for the bleeds off landing. That is when he informed me we needed it to get the planned payload on. In discussing the bleeds off procedure in the QRH; my First Officer said we could accomplish it at 17;000 ft. I asked him to wait until 14;000 ft; so we wouldn't drop any masks if we had any issues. At any rate; we wanted it done by ZZZZZ so we could focus on the approach. Out of 17;000 ft he started the bleeds off procedure before catching himself and saying 'sorry; you wanted me to wait until 14;000 ft.' That was an opportunity for us to briefly discuss the effects of fatigue setting in on us.On the arrival we got the usual slowdowns and vector off course. Approaching ZZZ we were cleared for the approach and followed the technique listed on the Jepp page. Approaching the turn to ZZZZZ1; ATC (Air Traffic Control) gave us a heading and altitude to fly through the localizer and we compiled. When we had sufficient spacing on traffic ahead we were given 020 and 8800 to join localizer and cleared for ILS DME X XXR. I disconnected autopilot and was hand flying to catch localizer and glideslope all the while at flaps 40. We were handed off to tower around ZZZZZ2. Tower initially said continue and so we did. In the short time we were on tower frequency; there were several communications in Spanish as well as blocked transmissions. We were never able to secure a landing clearance. It was a very clear night and I could see our runway was clear of traffic. Feeling fatigued as I did; I elected to land. ATC never said a word about it and simply told us to hold short of YYL on Taxiway F. My First Officer told me he thought I did the right thing as he too was feeling the effects of fatigue. That was the hardest leg of the 3 we flew that day simply because of the destination and its challenges. Then throw in the fatigue factor and that is where we found ourselves.

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.