Curious what the availability looks like over time for Delta SkyMiles redemption on various routes? Yeah, me too. So I did something about it. Cherry picking routes right now (JFK-LAX, JFK-LHR, LGA-ORD) because the data processing isn't easy but the information I've gathered so far is interesting. There are 216 days of the next 330 where a "low" business class seat is available; 50 are on DL metal and 215 on VS metal. More similar analysis after the click. Any other city pairs you're interested in??