Lola, funny, I also confuse the years. I can blame senioritis.
Les, Google Flights should have a graph and price history to help your research. Google Flights also can show you the price for everyday of a particular month, so you can determine if flying a day earlier or later would save you money. You can set up price alerts to email you when prices for specific routes change.
Last July, 2023, I found British Airways business class RT flights from LAX to Amsterdam for $1850 each. I got to this price with the help of the AARP discount stacked with the British Airlines Visa discount. I booked directly with British Airways. Before those discounts, the business class fares were around $2200 RT each, which is still great.
I would have preferred leaving from San Diego, but we haven't had any great business class prices from here since precovid, and San Diego has been double the LAX price.
SFO is a major airport, so that might increase your chances for a good rate.
Anyhow, just a lucky example of what you might be able to pay. In the past dozen years I have averaged $2500 each RT for business class to Europe.
What worked for me was just searching on my own with Google Flights, using several different destinations. Once I found a low business class rate for one European city, I knew it was possible. Every few days I plugged in other cities, until I got lucky. I actually found my price a day before Google Flights sent me the alert.
Interestingly, when I found our great price, I checked and economy was the same price! I had just assumed all the prices categories went down during a fare sale.
Anyhow, I am meandering , but there's no science here, just luck, but if you're persistent and have the time, you might be rewarded.
Good luck!