Finnair has Premium Economy round-trip flights from Dallas (DFW) to Helsinki (HEL) for $861-$883, NONSTOP. Flights October to December. Extended weekends available.
Premium Economy cabin has larger seats, more legroom, better baggage allowance, and better meal service. You can learn more on Finnair’s website [linked].
Some small OTAs on Google have this for cheaper than the airline. If you plan on booking there, beware of any site that charges a fee to cancel a ticket within the 24-hour “free” period. Use unknown booking sites at your own risk.