If you want to start your trip on the wrong foot uses Air Canada Rouge, you are on the right path.
My friend and I were flying from Toronto to Budapest, we had confirmed seats on Rouge when we first booked, our cruise, with Viking. When we checked in with AC, AC had changed our exit row seats to and had reserved us some leftover seats. My friend is 6'4," his seat did not allow for LEG ROOM not even half of an inch. In this old plane model 767300 ER, AC added some seats to the configuration therefore, there is less space between the seats in the economy class.
While we waiting on the tarmac, it was very difficult to breathe because the airflow was controlled by the pilot and it is only until we took off that he started the air. The food was not just terrible, whatever was served for breakfast was not eatable. Both my friend and I have traveled with many different carriers and this is the first time I have to write such a review. Don't Fly Rouge