Variable latency flush filtering including receiving a first flush instruction tag (ITAG) and a second flush ITAG, wherein the first flush ITAG and the second flush ITAG are instructions to invalidate internal operation results after an internal operation identified by the first flush ITAG and the second flush ITAG; determining that the second flush ITAG is before the first flush ITAG by comparing the first flush ITAG and the second flush ITAG; determining that the first flush ITAG requires adjustment; and delaying the flush to a subsequent cycle in response to determining that the second flush ITAG is before the first flush ITAG and determining that the first flush ITAG requires adjustment.