The actual flight consisted of fifteen minutes of ascent, one and one-quarter hours cruising at constant altitude, and another fifteen minutes of descent. The interesting portion of the flight from a gas laws perspective occurred during the time when the plane was cruising. That's low enough that most humans would suffocate in under thirty seconds and freeze solid in a few hours. Although the environmental conditions outside are harsh, life inside a jet isn't all that bad. Temperature hardly varies at all as the graph on the top right shows.
Pressure is an altogether different matter, however.
While passengers would find it most comfortable if the cabin was kept at one atmosphere there are engineering and economic reasons to maintain the pressure at a lower value. In addition, humans are not as sensitive to pressure variations as they are to temperature variations. Thus, the cabin pressure during this flight was kept at a compromise value of 80 kPa. That's much higher than the pressure outside, but still lower than what most people are used to. This is about the same temperature as one would find inside a pizza oven.