Looking at June (which isn't even fully available yet), I see JFK-LHR availability for 45K one day on BA, 55K two days on BA/AA, 70K two days (with less than $30 of fees) on AY. I see a bunch of BA availability on BOS-LHR. Scattered availability throughout the month from MIA, IAH, ATL on BA.

Closer to the current time, I see plenty of JFK-LHR awards in early August 2025, including AA availability for 45K + $18.10 in taxes. There's more availability at 55K from other airports, including DEN, LAX, and DFW.

Saying "I was able to book this in 2019" means nothing. If you learned to be flexible, consider positioning flights, etc, those are all great lessons, but the most important lesson of any frequent flyer program is not to count on it offering the same value proposition for an extended period of time. I miss earning 12K RDM on sub-$200 DL fares in Y in 2013 and then having basically no trouble finding availability to/from Europe with a stopover included for 100K roundtrip, but that time isn't coming back. I use my leftover DL miles where they're convenient - right now, that's domestic fares.

AS's value proposition has changed since the Emirates 100K days that were mentioned earlier in the thread, since the QF/CX flights were bargains, but there's not much to do besides adapt. The best deals they have that are actually bookable right now, in my opinion are AA in-close availability in J to Europe, Starlux availability at times to Asia, and the new Porter redemptions to/from Toronto. I hope people get the flights they want in the months/years to come, but patterns of availability changing and evolving is a reality of frequent flyer programs.