Emirates has ramped up its capacity from Seattle as of early July, and the route to Dubai now features a double-daily service from Seatac Airport.

The service was previously operated by a Boeing 777-300ER, but a B777-200LR is now on the route. This makes Seattle the only US city to have double daily Emirates flights, as the airline operates three times per day on the Airbus A380 from New York and once per day from all other cities on the continent, including Toronto with its A380 services.

(http://www.emirates.com)