While at Boeing Field, you get a steady stream of traffic for SeaTac overhead. With Delta’s substantial presence at Seattle, the right time of day can mean a few widebodies. The A330 is a big part of their operations and we currently get the old and the new with the -300s and the -900 neos. The conditions looked pretty clear above me but there must have been a lot of moisture around because the jets seemed to be pulling a bit of vapor with them and going in and out of clouds that they seemed to hard to see without them there.
While I had headed to SeaTac to see the 21Air 767 arrive, I hung around for a couple of other arrivals. Delta operates a variety of long haul types into the airport and this includes A330s of the older and newer generations. First to arrive was an A330-300. A little while later, it was followed by an A330-900, the A330neo version. I thought I would try and get identical shots of both jets to see how much the engine and winglet changes showed up when looking at them in flight. Here are shots to compare the two types for you to make your own comparisons. I think the differences are there but they are not drastic.