TAP Air Portugal has new business class sale for travel out of North America to Europe. Flights out of the U.S. start as low as $1,499 round trip all in. These need to be booked by March 2 for travel between April 12 and September 30, 2021. Any flights booked with TAP include one free booking change should travel restrictions or some other reason force you to change your plans.
And the full terms & conditions of this offer: