Large Transport
Flight Crew Air Transport Pilot (ATP)
Flight Crew Last 90 Days 12; Flight Crew Total 1431; Flight Crew Type 1431
Ground Event / Encounter Jet Blast; Inflight Event / Encounter Unstabilized Approach; Inflight Event / Encounter Loss Of Aircraft Control
Flight Crew Regained Aircraft Control
Procedure
IAH was landing in an east flow configuration while departing Runways 15L and 9. We were vectored for an approach in VMC conditions to runway 8R. The approach was straight forward as the winds were rather consistent meaning no gusts encountered the entire way down the approach. The aircraft was stable and configured properly and accordingly with what seemed like very little input needed from the PF to maintain the approach profile both laterally and vertically. We approached the runway and I noticed an aircraft beginning the takeoff roll on 15L and did not think anything of it. In the round-out to flare; the airplane abruptly rolled left while being pushed to the left of the centerline of the runway and then had the nose yaw to the right at about 30-50 feet RA according to the callouts I recall hearing. This also coincided with the Runway 15L threshold passing behind my right shoulder as I recall. The PF made some quick and precise control inputs to get the aircraft back over the centerline wings level and landed while still in the TDZ. As soon as the airplane was slowing and tracking the centerline the PF made a comment/question wondering what the heck happened. I stated that I had an idea; but would wait until we cleared the runway to continue the conversation. After clearing I stated to the Captain I thought we might have encountered a jet blast event due to the surface winds and the aircraft departing on 15L. I was unsure what the aircraft type was that departed 15L as from the cursory glance I gave it on final it did not look like a widebody; so again I did not even think that we might be setting ourselves up for a jet blast encounter. That being said; this was the end of our second leg in this very jet and it had performed flawlessly both flights; so I do not think that there was any malfunction that could be associated with this event.
Air carrier First Officer reported a possible jet blast encounter during landing flare at IAH airport.  First officer stated they were landing on Runway 8R and the jet blast was from an aircraft taking off on Runway 15L.