Over the decades, the Met did Parsifal every Easter. Times have changed, but during this enforced isolation, there are several companies that are streaming performances from their video archives. Here are several. Please note dates.

• Now on Demand: Two YouTube Parsifals — 1) Bayreuth (Stein conducting), and 2) Salzburg (Thielemann conducting) (Subtitled).
• Now on Demand until 11 April: Bavarian State Opera. Nina Stemme, Jonas Kaufmann, René Pape (Kirill Petrenko conducting). https://www.staatsoper.de/en/news/online-schedule-until-19-april.html (Subtitled).
• 9 April for 24 hours: Met Opera — a Parsifal with Dalayman, Kaufmann and René Pape (Daniele Gatti conducting) www.metopera.org/user-information/nightly-met-opera-streams (Subtitled).
• 9 April: Vienna State: DVD of 2015 performance. Volle, Milling, Denoke/cond. Adam Fischer. Go to www.staatsoperlive.com to create a password and get more details. (Subtitled).
• 10 April: Berlin Staatsoper: (Good Friday) Andreas Schager, Anja Kampe and René Pape, cond. Barenboim. www.staatsoper-berlin.de/en/staatsoper/news/our-daily-video-on-demand-programme.142/.
• 13 April: Berlin Staatsoper: (Easter Monday) Same details as above.

If you would like to read about Parsifal go to http://www.wagneropera.net/wagner-links.htm. Go down a few lines to the Monsalvat link.
 
And don't forget Opera America: a wide-ranging list. Something for everyone. 
https://operaamerica.org/applications/schedule/index.aspx