JFK-LAS is definitely a seasonal adjustment, although the timing is somewhat different from last year. Last year, it was 3x from 11/15 to 12/30, but this year it goes to 3x on 11/1 and the 4th flight doesn't return until February. It's probably not a bad move, since I remember lots of empty seats when I flew to LAS last January.

The one that may not be seasonal is JFK-LGB which drops to 4x. The 5th (and 6th) flights may not come back if the LGB slots get used for other routes (LGB-ORD?).

Bill