After a welcoming ceremony at the airport Monday, the plane was grounded by a faulty valve in the cooling system for the electronics bay.
A second Dreamliner arrived at Sea-Tac from Tokyo on Tuesday morning, 77 minutes ahead of schedule.
That flight also took off for its return to Japan on Tuesday afternoon.
MORE HBJ HEADLINES
Payoff plan for college loans comes in several forms Putting Tubman on $20 bill doesn’t erase earning gaps More brands get serious about plus-size teen fashions Friendship not required, but workers must get along Treatment for double chins hits the market this fall Experts expect banks to start pruning their branches