We were on the early shuttle to Seattle for our connecting flight to Kona. We decided to check bags (we rarely do this) but checked 2 bags in Portland to Kona. Pane was boarded and ready to go on time, but it was noon at SeaTac and we had to wait several minutes to even leave the gate to taxi. I counted about 12 jets in front of us:( 45 minutes or so later the captain notified us we had burned too much fuel and had to return to get it topped off. Interesting the whining around us. What are these other passengers thinking? This is a Non-Stop flight over the Pacific.