Find great value on flights from Calgary to Portland with CheapOair! Known as the City of Roses, Portland is the largest city lying between San Francisco and Seattle. The city has great outdoor environment and is noted for its scenic beauty and gives you a small town feeling. Oregon Museum of Science and Industry is a great place for people of all ages and provides hands on activities and an amazing place to spend a rainy without getting bored. Whatever type of vacation you are looking for, CheapOair will help you save big on flights to Portland!