You will need darkness to see the aurora. Isn't the flight over (from Europe to Seattle) during the day? If either flight will be at night, sit on the north side of the plane (right side coming over, left side on the return) for the best chance of seeing it.
In human anatomy, the inferior mesenteric artery, often abbreviated as IMA, is the third main branch of the abdominal aorta and arises at the level of L3, supplying the large intestine from the left colic (or splenic) flexure to the upper part of the rectum, which includes the descending colon, the sigmoid colon, and part of the rectum.
Facial artery: This artery stems from the external carotid artery, follows the inferior border of the mandible, and enters the face. It provides blood to the muscles of the face. Submental artery: This artery starts from the facial artery and supplies blood to the tissues under the chin. Inferior labial artery: Starting from the facial artery at the angle of the mouth, this artery runs medially to the lower lip, where it provides blood flow.