I found a 2016 reference noting 226 A320s had exceeded the old limit of 60,000 flight hours (FH).
Back then MSN0069 has the highest cycles (over 51,000) while MSN0068 had the most hours (over 81,000).
http://www.mromanagement.com/feature/in ... asda76ofv3
It is my understanding that ESG2 (ultimate life to 90,000 cycles, 180,000 FH) was cancelled.
The first A320s to reach the ESG1 limits were expected a year ago to next year (depends on which source, I believe the above link is more accurate).
I found a presentation that gives details of the A320 life:
First airframe hit 60,000 FH in 2007
http://travelsdocbox.com/Air_Travel/662 ... pdate.html
What is the 737 fleet leader?
We've had topics before on longest life.
HA N669HA DC-9 95k,132 cycles.

viewtopic.php?t=748823
Highest usage 737 I could find was N694SW, a 1985 737-300 that WN retired in June 2016, which might have the cycle record.
In February 2016, it had 97,811 hours and 67,813 cycles.
Note, per this thread:
viewtopic.php?t=1348429
To my knowledge, the 85,000 cycles of a 737 that requires a major repair (LOV 100k cycles) has never been exceeded. I'm looking for evidence any plane reached 85,000 cycles limit (or better, exceeded).
I found a bunch of DL MD-80s with 80k hours and 60k cycles by putting in registrations in here: http://av-info.faa.gov/sdrx/Query.aspx (don't put in the N, for N registered aircraft only) e.g., 906DL for N906DL.
FWIW, I found DL MD-90s with less than 25k cycles!
Lots of DL 717s at 30k cycles in DLs fleet and 50k hours...
Alas, I do not know how to find data on scrapped frames. I tried looking up scrapped WN 737s and the data base was blank (as it should be).
Lightsaber