Kelsey Plum scored 26 points, Chantel Osahor had 24 points and 18 rebounds, and
The No. 7-seeded Huskies scored the game's first 12 points and stayed ahead the rest of the way. Washington (26-10) will play
No. 4-seeded Stanford was seeking its 13th Final Four appearance and seventh in the last nine years.
Lili Thompson scored 19 points for the Cardinal (27-8). Erica McCall had 17 points, all in the second half, and 15 rebounds.
It was the first regional final between two Pac-12 Conference schools since Stanford beat USC, 82-62, on its way to winning the national championship in 1992.
Stanford cut Washington's lead to 67-63 with 7 minutes 19 seconds to play after Karlie Samuelson, Thompson, Marta Sniezek and McCall each made a three-point basket on consecutive possessions.
Reserve Cornelia Fondren made all six of her shots and finished with 13 points to help Syracuse to its 15th victory in 16 games.